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Merge branch 'master' into next
[GitHub/mt8127/android_kernel_alcatel_ttab.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
8c4877a4
JP		 29#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
7a291083
JBT		 31#include <linux/in.h>
32#include <linux/ip.h>
33#include <linux/tcp.h>
34#include <linux/udp.h>
35#include <linux/if.h>
36#include <linux/list.h>
5a0e3ad6 37#include <linux/slab.h>
7a291083 38#include <linux/if_ether.h>
2a6f4e49
JBT		 39#include <linux/notifier.h>
40#include <linux/reboot.h>
48cfb14f 41#include <linux/memory.h>
21eee2dd 42#include <asm/kexec.h>
06f89edf 43#include <linux/mutex.h>
2a6f4e49 44
7a291083
JBT		 45#include <net/ip.h>
46
47#include "ehea.h"
48#include "ehea_qmr.h"
49#include "ehea_phyp.h"
50
51
52MODULE_LICENSE("GPL");
53MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
54MODULE_DESCRIPTION("IBM eServer HEA Driver");
55MODULE_VERSION(DRV_VERSION);
56
57
58static int msg_level = -1;
59static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
60static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
61static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
62static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 63static int use_mcs;
64static int use_lro;
d4dc4ec9 65static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 66static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 67static int prop_carrier_state;
7a291083
JBT		 68
69module_param(msg_level, int, 0);
70module_param(rq1_entries, int, 0);
71module_param(rq2_entries, int, 0);
72module_param(rq3_entries, int, 0);
73module_param(sq_entries, int, 0);
8759cf76 74module_param(prop_carrier_state, int, 0);
18604c54 75module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 76module_param(use_lro, int, 0);
77module_param(lro_max_aggr, int, 0);
18604c54 78module_param(num_tx_qps, int, 0);
7a291083 79
18604c54 80MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 81MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 82MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
83 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 84MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
87MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
90MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
91 "[2^x - 1], x = [6..14]. Default = "
92 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
93MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
94 "[2^x - 1], x = [6..14]. Default = "
95 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 96MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 97
d4dc4ec9
JBT		 98MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
99 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
100MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
101 "Default = 0");
102
508d2b5d 103static int port_name_cnt;
44c82152 104static LIST_HEAD(adapter_list);
48e4cc77 105static unsigned long ehea_driver_flags;
06f89edf 106static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 107struct ehea_fw_handle_array ehea_fw_handles;
108struct ehea_bcmc_reg_array ehea_bcmc_regs;
109
d1dea38d 110
2dc11581 111static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 112 const struct of_device_id *id);
d1dea38d 113
2dc11581 114static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 115
116static struct of_device_id ehea_device_table[] = {
117 {
118 .name = "lhea",
119 .compatible = "IBM,lhea",
120 },
121 {},
122};
b0afffe8 123MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 124
6b08f3ae 125static struct of_platform_driver ehea_driver = {
4018294b
GL		 126 .driver = {
127 .name = "ehea",
128 .owner = THIS_MODULE,
129 .of_match_table = ehea_device_table,
130 },
d1dea38d
TK		 131 .probe = ehea_probe_adapter,
132 .remove = ehea_remove,
133};
134
508d2b5d
DM		 135void ehea_dump(void *adr, int len, char *msg)
136{
7a291083
JBT		 137 int x;
138 unsigned char *deb = adr;
139 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 140 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
141 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 142 deb += 16;
143 }
144}
145
2f69ae01
JBT		 146void ehea_schedule_port_reset(struct ehea_port *port)
147{
148 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
149 schedule_work(&port->reset_task);
150}
151
21eee2dd
TK		 152static void ehea_update_firmware_handles(void)
153{
154 struct ehea_fw_handle_entry *arr = NULL;
155 struct ehea_adapter *adapter;
156 int num_adapters = 0;
157 int num_ports = 0;
158 int num_portres = 0;
159 int i = 0;
160 int num_fw_handles, k, l;
161
162 /* Determine number of handles */
52e21b1b
JBT		 163 mutex_lock(&ehea_fw_handles.lock);
164
21eee2dd
TK		 165 list_for_each_entry(adapter, &adapter_list, list) {
166 num_adapters++;
167
168 for (k = 0; k < EHEA_MAX_PORTS; k++) {
169 struct ehea_port *port = adapter->port[k];
170
171 if (!port || (port->state != EHEA_PORT_UP))
172 continue;
173
174 num_ports++;
175 num_portres += port->num_def_qps + port->num_add_tx_qps;
176 }
177 }
178
179 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
180 num_ports * EHEA_NUM_PORT_FW_HANDLES +
181 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
182
183 if (num_fw_handles) {
baeb2ffa 184 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 185 if (!arr)
52e21b1b 186 goto out; /* Keep the existing array */
21eee2dd
TK		 187 } else
188 goto out_update;
189
190 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 191 if (num_adapters == 0)
192 break;
193
21eee2dd
TK		 194 for (k = 0; k < EHEA_MAX_PORTS; k++) {
195 struct ehea_port *port = adapter->port[k];
196
8e95a202
JP		 197 if (!port || (port->state != EHEA_PORT_UP) ||
198 (num_ports == 0))
21eee2dd
TK		 199 continue;
200
201 for (l = 0;
202 l < port->num_def_qps + port->num_add_tx_qps;
203 l++) {
204 struct ehea_port_res *pr = &port->port_res[l];
205
206 arr[i].adh = adapter->handle;
207 arr[i++].fwh = pr->qp->fw_handle;
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = pr->send_cq->fw_handle;
210 arr[i].adh = adapter->handle;
211 arr[i++].fwh = pr->recv_cq->fw_handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = pr->eq->fw_handle;
214 arr[i].adh = adapter->handle;
215 arr[i++].fwh = pr->send_mr.handle;
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = pr->recv_mr.handle;
218 }
219 arr[i].adh = adapter->handle;
220 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 221 num_ports--;
21eee2dd
TK		 222 }
223
224 arr[i].adh = adapter->handle;
225 arr[i++].fwh = adapter->neq->fw_handle;
226
227 if (adapter->mr.handle) {
228 arr[i].adh = adapter->handle;
229 arr[i++].fwh = adapter->mr.handle;
230 }
52e21b1b 231 num_adapters--;
21eee2dd
TK		 232 }
233
234out_update:
235 kfree(ehea_fw_handles.arr);
236 ehea_fw_handles.arr = arr;
237 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 238out:
239 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 240}
241
242static void ehea_update_bcmc_registrations(void)
243{
52e21b1b 244 unsigned long flags;
21eee2dd
TK		 245 struct ehea_bcmc_reg_entry *arr = NULL;
246 struct ehea_adapter *adapter;
247 struct ehea_mc_list *mc_entry;
248 int num_registrations = 0;
249 int i = 0;
250 int k;
251
52e21b1b
JBT		 252 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
253
21eee2dd
TK		 254 /* Determine number of registrations */
255 list_for_each_entry(adapter, &adapter_list, list)
256 for (k = 0; k < EHEA_MAX_PORTS; k++) {
257 struct ehea_port *port = adapter->port[k];
258
259 if (!port || (port->state != EHEA_PORT_UP))
260 continue;
261
262 num_registrations += 2; /* Broadcast registrations */
263
264 list_for_each_entry(mc_entry, &port->mc_list->list,list)
265 num_registrations += 2;
266 }
267
268 if (num_registrations) {
baeb2ffa 269 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 270 if (!arr)
52e21b1b 271 goto out; /* Keep the existing array */
21eee2dd
TK		 272 } else
273 goto out_update;
274
275 list_for_each_entry(adapter, &adapter_list, list) {
276 for (k = 0; k < EHEA_MAX_PORTS; k++) {
277 struct ehea_port *port = adapter->port[k];
278
279 if (!port || (port->state != EHEA_PORT_UP))
280 continue;
281
52e21b1b
JBT		 282 if (num_registrations == 0)
283 goto out_update;
284
21eee2dd
TK		 285 arr[i].adh = adapter->handle;
286 arr[i].port_id = port->logical_port_id;
287 arr[i].reg_type = EHEA_BCMC_BROADCAST |
288 EHEA_BCMC_UNTAGGED;
289 arr[i++].macaddr = port->mac_addr;
290
291 arr[i].adh = adapter->handle;
292 arr[i].port_id = port->logical_port_id;
293 arr[i].reg_type = EHEA_BCMC_BROADCAST |
294 EHEA_BCMC_VLANID_ALL;
295 arr[i++].macaddr = port->mac_addr;
52e21b1b 296 num_registrations -= 2;
21eee2dd
TK		 297
298 list_for_each_entry(mc_entry,
299 &port->mc_list->list, list) {
52e21b1b
JBT		 300 if (num_registrations == 0)
301 goto out_update;
302
21eee2dd
TK		 303 arr[i].adh = adapter->handle;
304 arr[i].port_id = port->logical_port_id;
305 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
306 EHEA_BCMC_MULTICAST |
307 EHEA_BCMC_UNTAGGED;
308 arr[i++].macaddr = mc_entry->macaddr;
309
310 arr[i].adh = adapter->handle;
311 arr[i].port_id = port->logical_port_id;
312 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
313 EHEA_BCMC_MULTICAST |
314 EHEA_BCMC_VLANID_ALL;
315 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 316 num_registrations -= 2;
21eee2dd
TK		 317 }
318 }
319 }
320
321out_update:
322 kfree(ehea_bcmc_regs.arr);
323 ehea_bcmc_regs.arr = arr;
324 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 325out:
326 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 327}
328
7a291083
JBT		 329static struct net_device_stats *ehea_get_stats(struct net_device *dev)
330{
331 struct ehea_port *port = netdev_priv(dev);
332 struct net_device_stats *stats = &port->stats;
333 struct hcp_ehea_port_cb2 *cb2;
ce45b873 334 u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 335 int i;
336
337 memset(stats, 0, sizeof(*stats));
338
3d8009c7 339 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 340 if (!cb2) {
8c4877a4 341 netdev_err(dev, "no mem for cb2\n");
7a291083
JBT		 342 goto out;
343 }
344
345 hret = ehea_h_query_ehea_port(port->adapter->handle,
346 port->logical_port_id,
347 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
348 if (hret != H_SUCCESS) {
8c4877a4 349 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 350 goto out_herr;
351 }
352
353 if (netif_msg_hw(port))
354 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
355
356 rx_packets = 0;
ce45b873 357 for (i = 0; i < port->num_def_qps; i++) {
7a291083 358 rx_packets += port->port_res[i].rx_packets;
ce45b873
BL		 359 rx_bytes += port->port_res[i].rx_bytes;
360 }
7a291083 361
7393b87c 362 tx_packets = 0;
ce45b873 363 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7393b87c 364 tx_packets += port->port_res[i].tx_packets;
ce45b873
BL		 365 tx_bytes += port->port_res[i].tx_bytes;
366 }
7393b87c
TK		 367
368 stats->tx_packets = tx_packets;
7a291083
JBT		 369 stats->multicast = cb2->rxmcp;
370 stats->rx_errors = cb2->rxuerr;
ce45b873
BL		 371 stats->rx_bytes = rx_bytes;
372 stats->tx_bytes = tx_bytes;
7a291083
JBT		 373 stats->rx_packets = rx_packets;
374
375out_herr:
3faf2693 376 free_page((unsigned long)cb2);
7a291083
JBT		 377out:
378 return stats;
379}
380
381static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
382{
383 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
384 struct net_device *dev = pr->port->netdev;
385 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 386 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
387 int adder = 0;
7a291083
JBT		 388 int i;
389
2c69448b
JBT		 390 pr->rq1_skba.os_skbs = 0;
391
392 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 393 if (nr_of_wqes > 0)
394 pr->rq1_skba.index = index;
2c69448b 395 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 396 return;
2c69448b 397 }
7a291083 398
2c69448b 399 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 400 if (!skb_arr_rq1[index]) {
401 skb_arr_rq1[index] = netdev_alloc_skb(dev,
402 EHEA_L_PKT_SIZE);
403 if (!skb_arr_rq1[index]) {
8c4877a4 404 netdev_info(dev, "Unable to allocate enough skb in the array\n");
2c69448b 405 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 406 break;
407 }
408 }
409 index--;
410 index &= max_index_mask;
2c69448b 411 adder++;
7a291083 412 }
2c69448b
JBT		 413
414 if (adder == 0)
415 return;
416
7a291083 417 /* Ring doorbell */
2c69448b 418 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 419}
420
e2878806 421static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 422{
7a291083
JBT		 423 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
424 struct net_device *dev = pr->port->netdev;
425 int i;
426
5c7e57f7 427 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 428 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 429 return;
430 }
431
432 for (i = 0; i < nr_rq1a; i++) {
7a291083 433 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
5c7e57f7 434 if (!skb_arr_rq1[i]) {
8c4877a4 435 netdev_info(dev, "Not enough memory to allocate skb array\n");
e2878806 436 break;
5c7e57f7 437 }
7a291083
JBT		 438 }
439 /* Ring doorbell */
f76957fc 440 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 441}
442
443static int ehea_refill_rq_def(struct ehea_port_res *pr,
444 struct ehea_q_skb_arr *q_skba, int rq_nr,
445 int num_wqes, int wqe_type, int packet_size)
446{
447 struct net_device *dev = pr->port->netdev;
448 struct ehea_qp *qp = pr->qp;
449 struct sk_buff **skb_arr = q_skba->arr;
450 struct ehea_rwqe *rwqe;
451 int i, index, max_index_mask, fill_wqes;
2c69448b 452 int adder = 0;
7a291083
JBT		 453 int ret = 0;
454
455 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 456 q_skba->os_skbs = 0;
7a291083 457
2c69448b
JBT		 458 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
459 q_skba->os_skbs = fill_wqes;
7a291083 460 return ret;
2c69448b 461 }
7a291083
JBT		 462
463 index = q_skba->index;
464 max_index_mask = q_skba->len - 1;
465 for (i = 0; i < fill_wqes; i++) {
2c69448b 466 u64 tmp_addr;
89d71a66
ED		 467 struct sk_buff *skb;
468
469 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 470 if (!skb) {
7a291083 471 q_skba->os_skbs = fill_wqes - i;
e2878806 472 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 473 netdev_info(pr->port->netdev,
474 "rq%i ran dry - no mem for skb\n",
475 rq_nr);
e2878806
TK		 476 ret = -ENOMEM;
477 }
7a291083
JBT		 478 break;
479 }
7a291083
JBT		 480
481 skb_arr[index] = skb;
2c69448b
JBT		 482 tmp_addr = ehea_map_vaddr(skb->data);
483 if (tmp_addr == -1) {
484 dev_kfree_skb(skb);
485 q_skba->os_skbs = fill_wqes - i;
486 ret = 0;
487 break;
488 }
7a291083
JBT		 489
490 rwqe = ehea_get_next_rwqe(qp, rq_nr);
491 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 492 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 493 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 494 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 495 rwqe->sg_list[0].len = packet_size;
496 rwqe->data_segments = 1;
497
498 index++;
499 index &= max_index_mask;
2c69448b 500 adder++;
7a291083 501 }
44c82152 502
7a291083 503 q_skba->index = index;
2c69448b
JBT		 504 if (adder == 0)
505 goto out;
7a291083
JBT		 506
507 /* Ring doorbell */
508 iosync();
509 if (rq_nr == 2)
2c69448b 510 ehea_update_rq2a(pr->qp, adder);
7a291083 511 else
2c69448b 512 ehea_update_rq3a(pr->qp, adder);
44c82152 513out:
7a291083
JBT		 514 return ret;
515}
516
517
518static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
519{
520 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
521 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 522 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 523}
524
525
526static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
527{
528 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
529 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 530 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 531}
532
533static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
534{
535 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
536 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
537 return 0;
538 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
539 (cqe->header_length == 0))
540 return 0;
541 return -EINVAL;
542}
543
544static inline void ehea_fill_skb(struct net_device *dev,
545 struct sk_buff *skb, struct ehea_cqe *cqe)
546{
547 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
548
549 skb_put(skb, length);
7a291083 550 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 551
552 /* The packet was not an IPV4 packet so a complemented checksum was
553 calculated. The value is found in the Internet Checksum field. */
554 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
555 skb->ip_summed = CHECKSUM_COMPLETE;
556 skb->csum = csum_unfold(~cqe->inet_checksum_value);
557 } else
558 skb->ip_summed = CHECKSUM_UNNECESSARY;
7a291083
JBT		 559}
560
561static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
562 int arr_len,
563 struct ehea_cqe *cqe)
564{
565 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
566 struct sk_buff *skb;
567 void *pref;
568 int x;
569
570 x = skb_index + 1;
571 x &= (arr_len - 1);
572
573 pref = skb_array[x];
0b2febf3
HH		 574 if (pref) {
575 prefetchw(pref);
576 prefetchw(pref + EHEA_CACHE_LINE);
577
578 pref = (skb_array[x]->data);
579 prefetch(pref);
580 prefetch(pref + EHEA_CACHE_LINE);
581 prefetch(pref + EHEA_CACHE_LINE * 2);
582 prefetch(pref + EHEA_CACHE_LINE * 3);
583 }
584
7a291083
JBT		 585 skb = skb_array[skb_index];
586 skb_array[skb_index] = NULL;
587 return skb;
588}
589
590static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
591 int arr_len, int wqe_index)
592{
593 struct sk_buff *skb;
594 void *pref;
595 int x;
596
597 x = wqe_index + 1;
598 x &= (arr_len - 1);
599
600 pref = skb_array[x];
0b2febf3
HH		 601 if (pref) {
602 prefetchw(pref);
603 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 604
0b2febf3
HH		 605 pref = (skb_array[x]->data);
606 prefetchw(pref);
607 prefetchw(pref + EHEA_CACHE_LINE);
608 }
7a291083
JBT		 609
610 skb = skb_array[wqe_index];
611 skb_array[wqe_index] = NULL;
612 return skb;
613}
614
615static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
616 struct ehea_cqe *cqe, int *processed_rq2,
617 int *processed_rq3)
618{
619 struct sk_buff *skb;
620
acbddb59
JBT		 621 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
622 pr->p_stats.err_tcp_cksum++;
623 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
624 pr->p_stats.err_ip_cksum++;
625 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
626 pr->p_stats.err_frame_crc++;
627
7a291083
JBT		 628 if (rq == 2) {
629 *processed_rq2 += 1;
630 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
631 dev_kfree_skb(skb);
632 } else if (rq == 3) {
633 *processed_rq3 += 1;
634 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
635 dev_kfree_skb(skb);
636 }
637
638 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 639 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 640 pr_err("Critical receive error for QP %d. Resetting port.\n",
641 pr->qp->init_attr.qp_nr);
58dd8258
TK		 642 ehea_dump(cqe, sizeof(*cqe), "CQE");
643 }
2f69ae01 644 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 645 return 1;
646 }
647
648 return 0;
649}
650
d4dc4ec9
JBT		 651static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
652 void **tcph, u64 *hdr_flags, void *priv)
653{
654 struct ehea_cqe *cqe = priv;
655 unsigned int ip_len;
656 struct iphdr *iph;
657
658 /* non tcp/udp packets */
659 if (!cqe->header_length)
660 return -1;
661
662 /* non tcp packet */
663 skb_reset_network_header(skb);
664 iph = ip_hdr(skb);
665 if (iph->protocol != IPPROTO_TCP)
666 return -1;
667
668 ip_len = ip_hdrlen(skb);
669 skb_set_transport_header(skb, ip_len);
670 *tcph = tcp_hdr(skb);
671
672 /* check if ip header and tcp header are complete */
3ff2cd23 673 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 674 return -1;
675
676 *hdr_flags = LRO_IPV4 | LRO_TCP;
677 *iphdr = iph;
678
679 return 0;
680}
681
682static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
683 struct sk_buff *skb)
684{
8e95a202
JP		 685 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
686 pr->port->vgrp);
d4dc4ec9 687
c7757fdb 688 if (skb->dev->features & NETIF_F_LRO) {
d4dc4ec9
JBT		 689 if (vlan_extracted)
690 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
691 pr->port->vgrp,
692 cqe->vlan_tag,
693 cqe);
694 else
695 lro_receive_skb(&pr->lro_mgr, skb, cqe);
696 } else {
697 if (vlan_extracted)
698 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
699 cqe->vlan_tag);
700 else
701 netif_receive_skb(skb);
702 }
703}
704
bea3348e
SH		 705static int ehea_proc_rwqes(struct net_device *dev,
706 struct ehea_port_res *pr,
707 int budget)
7a291083 708{
18604c54 709 struct ehea_port *port = pr->port;
7a291083
JBT		 710 struct ehea_qp *qp = pr->qp;
711 struct ehea_cqe *cqe;
712 struct sk_buff *skb;
713 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
714 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
715 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
716 int skb_arr_rq1_len = pr->rq1_skba.len;
717 int skb_arr_rq2_len = pr->rq2_skba.len;
718 int skb_arr_rq3_len = pr->rq3_skba.len;
719 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 720 u64 processed_bytes = 0;
bea3348e 721 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 722
723 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
724 last_wqe_index = 0;
7a291083 725
7a291083 726 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 727 while ((processed < budget) && cqe) {
7a291083
JBT		 728 ehea_inc_rq1(qp);
729 processed_rq1++;
730 processed++;
7a291083
JBT		 731 if (netif_msg_rx_status(port))
732 ehea_dump(cqe, sizeof(*cqe), "CQE");
733
734 last_wqe_index = wqe_index;
735 rmb();
736 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 737 if (rq == 1) {
738 /* LL RQ1 */
7a291083
JBT		 739 skb = get_skb_by_index_ll(skb_arr_rq1,
740 skb_arr_rq1_len,
741 wqe_index);
742 if (unlikely(!skb)) {
782615ae 743 netif_info(port, rx_err, dev,
8c4877a4 744 "LL rq1: skb=NULL\n");
18604c54 745
bea3348e 746 skb = netdev_alloc_skb(dev,
7a291083 747 EHEA_L_PKT_SIZE);
5c7e57f7 748 if (!skb) {
782615ae 749 netdev_err(dev, "Not enough memory to allocate skb\n");
7a291083 750 break;
5c7e57f7 751 }
7a291083 752 }
508d2b5d 753 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 754 cqe->num_bytes_transfered - 4);
bea3348e 755 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 756 } else if (rq == 2) {
757 /* RQ2 */
7a291083
JBT		 758 skb = get_skb_by_index(skb_arr_rq2,
759 skb_arr_rq2_len, cqe);
760 if (unlikely(!skb)) {
8c4877a4
JP		 761 netif_err(port, rx_err, dev,
762 "rq2: skb=NULL\n");
7a291083
JBT		 763 break;
764 }
bea3348e 765 ehea_fill_skb(dev, skb, cqe);
7a291083 766 processed_rq2++;
508d2b5d
DM		 767 } else {
768 /* RQ3 */
7a291083
JBT		 769 skb = get_skb_by_index(skb_arr_rq3,
770 skb_arr_rq3_len, cqe);
771 if (unlikely(!skb)) {
8c4877a4
JP		 772 netif_err(port, rx_err, dev,
773 "rq3: skb=NULL\n");
7a291083
JBT		 774 break;
775 }
bea3348e 776 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 777 processed_rq3++;
778 }
779
ce45b873 780 processed_bytes += skb->len;
d4dc4ec9 781 ehea_proc_skb(pr, cqe, skb);
18604c54 782 } else {
acbddb59 783 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 784 port_reset = ehea_treat_poll_error(pr, rq, cqe,
785 &processed_rq2,
786 &processed_rq3);
787 if (port_reset)
788 break;
789 }
790 cqe = ehea_poll_rq1(qp, &wqe_index);
791 }
c7757fdb 792 if (dev->features & NETIF_F_LRO)
d4dc4ec9 793 lro_flush_all(&pr->lro_mgr);
7a291083 794
7a291083 795 pr->rx_packets += processed;
ce45b873 796 pr->rx_bytes += processed_bytes;
7a291083
JBT		 797
798 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
799 ehea_refill_rq2(pr, processed_rq2);
800 ehea_refill_rq3(pr, processed_rq3);
801
bea3348e 802 return processed;
7a291083
JBT		 803}
804
2928db4c
AD		 805#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
806
807static void reset_sq_restart_flag(struct ehea_port *port)
808{
809 int i;
810
811 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
812 struct ehea_port_res *pr = &port->port_res[i];
813 pr->sq_restart_flag = 0;
814 }
a8bb69f7 815 wake_up(&port->restart_wq);
2928db4c
AD		 816}
817
818static void check_sqs(struct ehea_port *port)
819{
820 struct ehea_swqe *swqe;
821 int swqe_index;
822 int i, k;
823
824 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
825 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 826 int ret;
2928db4c
AD		 827 k = 0;
828 swqe = ehea_get_swqe(pr->qp, &swqe_index);
829 memset(swqe, 0, SWQE_HEADER_SIZE);
830 atomic_dec(&pr->swqe_avail);
831
832 swqe->tx_control |= EHEA_SWQE_PURGE;
833 swqe->wr_id = SWQE_RESTART_CHECK;
834 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
835 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
836 swqe->immediate_data_length = 80;
837
838 ehea_post_swqe(pr->qp, swqe);
839
a8bb69f7
BL		 840 ret = wait_event_timeout(port->restart_wq,
841 pr->sq_restart_flag == 0,
842 msecs_to_jiffies(100));
843
844 if (!ret) {
8c4877a4 845 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 846 ehea_schedule_port_reset(pr->port);
847 return;
2928db4c
AD		 848 }
849 }
2928db4c
AD		 850}
851
852
18604c54 853static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 854{
acbddb59 855 struct sk_buff *skb;
7a291083
JBT		 856 struct ehea_cq *send_cq = pr->send_cq;
857 struct ehea_cqe *cqe;
18604c54 858 int quota = my_quota;
7a291083
JBT		 859 int cqe_counter = 0;
860 int swqe_av = 0;
acbddb59 861 int index;
7a291083
JBT		 862 unsigned long flags;
863
18604c54 864 cqe = ehea_poll_cq(send_cq);
508d2b5d 865 while (cqe && (quota > 0)) {
18604c54
JBT		 866 ehea_inc_cq(send_cq);
867
7a291083
JBT		 868 cqe_counter++;
869 rmb();
2928db4c
AD		 870
871 if (cqe->wr_id == SWQE_RESTART_CHECK) {
872 pr->sq_restart_flag = 1;
873 swqe_av++;
874 break;
875 }
876
7a291083 877 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 878 pr_err("Bad send completion status=0x%04X\n",
879 cqe->status);
ea96ceac 880
7a291083
JBT		 881 if (netif_msg_tx_err(pr->port))
882 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 883
884 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 885 pr_err("Resetting port\n");
ea96ceac
TK		 886 ehea_schedule_port_reset(pr->port);
887 break;
888 }
7a291083
JBT		 889 }
890
891 if (netif_msg_tx_done(pr->port))
892 ehea_dump(cqe, sizeof(*cqe), "CQE");
893
894 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 895 == EHEA_SWQE2_TYPE)) {
896
897 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
898 skb = pr->sq_skba.arr[index];
899 dev_kfree_skb(skb);
900 pr->sq_skba.arr[index] = NULL;
901 }
7a291083
JBT		 902
903 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
904 quota--;
18604c54
JBT		 905
906 cqe = ehea_poll_cq(send_cq);
ee289b64 907 }
7a291083
JBT		 908
909 ehea_update_feca(send_cq, cqe_counter);
910 atomic_add(swqe_av, &pr->swqe_avail);
911
912 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 913
7a291083
JBT		 914 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
915 >= pr->swqe_refill_th)) {
916 netif_wake_queue(pr->port->netdev);
917 pr->queue_stopped = 0;
918 }
919 spin_unlock_irqrestore(&pr->netif_queue, flags);
5b27d427 920 wake_up(&pr->port->swqe_avail_wq);
7a291083 921
18604c54 922 return cqe;
7a291083
JBT		 923}
924
18604c54 925#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 926#define EHEA_POLL_MAX_CQES 65535
18604c54 927
bea3348e 928static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 929{
508d2b5d
DM		 930 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
931 napi);
bea3348e 932 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 933 struct ehea_cqe *cqe;
934 struct ehea_cqe *cqe_skb = NULL;
935 int force_irq, wqe_index;
bea3348e 936 int rx = 0;
18604c54
JBT		 937
938 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 939 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
940
941 if (!force_irq)
942 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 943
bea3348e 944 while ((rx != budget) || force_irq) {
18604c54 945 pr->poll_counter = 0;
bea3348e 946 force_irq = 0;
288379f0 947 napi_complete(napi);
18604c54
JBT		 948 ehea_reset_cq_ep(pr->recv_cq);
949 ehea_reset_cq_ep(pr->send_cq);
950 ehea_reset_cq_n1(pr->recv_cq);
951 ehea_reset_cq_n1(pr->send_cq);
a91fb143 952 rmb();
18604c54
JBT		 953 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
954 cqe_skb = ehea_poll_cq(pr->send_cq);
955
e542aa6b 956 if (!cqe && !cqe_skb)
bea3348e 957 return rx;
18604c54 958
288379f0 959 if (!napi_reschedule(napi))
bea3348e 960 return rx;
18604c54 961
bea3348e
SH		 962 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
963 rx += ehea_proc_rwqes(dev, pr, budget - rx);
964 }
e542aa6b 965
bea3348e
SH		 966 pr->poll_counter++;
967 return rx;
7a291083
JBT		 968}
969
8d22c971
JBT		 970#ifdef CONFIG_NET_POLL_CONTROLLER
971static void ehea_netpoll(struct net_device *dev)
972{
973 struct ehea_port *port = netdev_priv(dev);
bea3348e 974 int i;
8d22c971 975
bea3348e 976 for (i = 0; i < port->num_def_qps; i++)
288379f0 977 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 978}
979#endif
980
7d12e780 981static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 982{
983 struct ehea_port_res *pr = param;
18604c54 984
288379f0 985 napi_schedule(&pr->napi);
18604c54 986
7a291083
JBT		 987 return IRQ_HANDLED;
988}
989
7d12e780 990static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 991{
992 struct ehea_port *port = param;
993 struct ehea_eqe *eqe;
d2db9eea 994 struct ehea_qp *qp;
7a291083 995 u32 qp_token;
ea96ceac
TK		 996 u64 resource_type, aer, aerr;
997 int reset_port = 0;
7a291083
JBT		 998
999 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 1000
7a291083 1001 while (eqe) {
7a291083 1002 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 1003 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
1004 eqe->entry, qp_token);
d2db9eea
JBT		 1005
1006 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 1007
1008 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1009 &aer, &aerr);
1010
1011 if (resource_type == EHEA_AER_RESTYPE_QP) {
1012 if ((aer & EHEA_AER_RESET_MASK) ||
1013 (aerr & EHEA_AERR_RESET_MASK))
1014 reset_port = 1;
1015 } else
1016 reset_port = 1; /* Reset in case of CQ or EQ error */
1017
bb3a6449 1018 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 1019 }
1020
ea96ceac 1021 if (reset_port) {
8c4877a4 1022 pr_err("Resetting port\n");
ea96ceac
TK		 1023 ehea_schedule_port_reset(port);
1024 }
d2db9eea 1025
7a291083
JBT		 1026 return IRQ_HANDLED;
1027}
1028
1029static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1030 int logical_port)
1031{
1032 int i;
1033
1acf2318 1034 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1035 if (adapter->port[i])
d1d25aab 1036 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1037 return adapter->port[i];
7a291083
JBT		 1038 return NULL;
1039}
1040
1041int ehea_sense_port_attr(struct ehea_port *port)
1042{
1043 int ret;
1044 u64 hret;
1045 struct hcp_ehea_port_cb0 *cb0;
1046
508d2b5d 1047 /* may be called via ehea_neq_tasklet() */
3faf2693 1048 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1049 if (!cb0) {
8c4877a4 1050 pr_err("no mem for cb0\n");
7a291083
JBT		 1051 ret = -ENOMEM;
1052 goto out;
1053 }
1054
1055 hret = ehea_h_query_ehea_port(port->adapter->handle,
1056 port->logical_port_id, H_PORT_CB0,
1057 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1058 cb0);
1059 if (hret != H_SUCCESS) {
1060 ret = -EIO;
1061 goto out_free;
1062 }
1063
1064 /* MAC address */
1065 port->mac_addr = cb0->port_mac_addr << 16;
1066
508d2b5d 1067 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1068 ret = -EADDRNOTAVAIL;
1069 goto out_free;
1070 }
1071
1072 /* Port speed */
1073 switch (cb0->port_speed) {
1074 case H_SPEED_10M_H:
1075 port->port_speed = EHEA_SPEED_10M;
1076 port->full_duplex = 0;
1077 break;
1078 case H_SPEED_10M_F:
1079 port->port_speed = EHEA_SPEED_10M;
1080 port->full_duplex = 1;
1081 break;
1082 case H_SPEED_100M_H:
1083 port->port_speed = EHEA_SPEED_100M;
1084 port->full_duplex = 0;
1085 break;
1086 case H_SPEED_100M_F:
1087 port->port_speed = EHEA_SPEED_100M;
1088 port->full_duplex = 1;
1089 break;
1090 case H_SPEED_1G_F:
1091 port->port_speed = EHEA_SPEED_1G;
1092 port->full_duplex = 1;
1093 break;
1094 case H_SPEED_10G_F:
1095 port->port_speed = EHEA_SPEED_10G;
1096 port->full_duplex = 1;
1097 break;
1098 default:
1099 port->port_speed = 0;
1100 port->full_duplex = 0;
1101 break;
1102 }
1103
e919b593 1104 port->autoneg = 1;
18604c54 1105 port->num_mcs = cb0->num_default_qps;
e919b593 1106
7a291083 1107 /* Number of default QPs */
18604c54
JBT		 1108 if (use_mcs)
1109 port->num_def_qps = cb0->num_default_qps;
1110 else
1111 port->num_def_qps = 1;
7a291083
JBT		 1112
1113 if (!port->num_def_qps) {
1114 ret = -EINVAL;
1115 goto out_free;
1116 }
1117
18604c54
JBT		 1118 port->num_tx_qps = num_tx_qps;
1119
1120 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1121 port->num_add_tx_qps = 0;
1122 else
18604c54 1123 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1124
1125 ret = 0;
1126out_free:
1127 if (ret || netif_msg_probe(port))
1128 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1129 free_page((unsigned long)cb0);
7a291083
JBT		 1130out:
1131 return ret;
1132}
1133
1134int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1135{
1136 struct hcp_ehea_port_cb4 *cb4;
1137 u64 hret;
1138 int ret = 0;
1139
3faf2693 1140 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1141 if (!cb4) {
8c4877a4 1142 pr_err("no mem for cb4\n");
7a291083
JBT		 1143 ret = -ENOMEM;
1144 goto out;
1145 }
1146
1147 cb4->port_speed = port_speed;
1148
1149 netif_carrier_off(port->netdev);
1150
1151 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1152 port->logical_port_id,
1153 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1154 if (hret == H_SUCCESS) {
1155 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1156
1157 hret = ehea_h_query_ehea_port(port->adapter->handle,
1158 port->logical_port_id,
1159 H_PORT_CB4, H_PORT_CB4_SPEED,
1160 cb4);
1161 if (hret == H_SUCCESS) {
1162 switch (cb4->port_speed) {
1163 case H_SPEED_10M_H:
1164 port->port_speed = EHEA_SPEED_10M;
1165 port->full_duplex = 0;
1166 break;
1167 case H_SPEED_10M_F:
1168 port->port_speed = EHEA_SPEED_10M;
1169 port->full_duplex = 1;
1170 break;
1171 case H_SPEED_100M_H:
1172 port->port_speed = EHEA_SPEED_100M;
1173 port->full_duplex = 0;
1174 break;
1175 case H_SPEED_100M_F:
1176 port->port_speed = EHEA_SPEED_100M;
1177 port->full_duplex = 1;
1178 break;
1179 case H_SPEED_1G_F:
1180 port->port_speed = EHEA_SPEED_1G;
1181 port->full_duplex = 1;
1182 break;
1183 case H_SPEED_10G_F:
1184 port->port_speed = EHEA_SPEED_10G;
1185 port->full_duplex = 1;
1186 break;
1187 default:
1188 port->port_speed = 0;
1189 port->full_duplex = 0;
1190 break;
1191 }
1192 } else {
8c4877a4 1193 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1194 ret = -EIO;
1195 }
1196 } else {
1197 if (hret == H_AUTHORITY) {
8c4877a4 1198 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1199 ret = -EPERM;
1200 } else {
1201 ret = -EIO;
8c4877a4 1202 pr_err("Failed setting port speed\n");
7a291083
JBT		 1203 }
1204 }
8759cf76
JBT		 1205 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1206 netif_carrier_on(port->netdev);
1207
3faf2693 1208 free_page((unsigned long)cb4);
7a291083
JBT		 1209out:
1210 return ret;
1211}
1212
1213static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1214{
1215 int ret;
1216 u8 ec;
1217 u8 portnum;
1218 struct ehea_port *port;
8c4877a4 1219 struct net_device *dev;
7a291083
JBT		 1220
1221 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1222 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1223 port = ehea_get_port(adapter, portnum);
8c4877a4 1224 dev = port->netdev;
7a291083
JBT		 1225
1226 switch (ec) {
1227 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1228
1229 if (!port) {
8c4877a4 1230 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1231 break;
1232 }
1233
1234 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1235 if (!netif_carrier_ok(dev)) {
1e1675cc 1236 ret = ehea_sense_port_attr(port);
7a291083 1237 if (ret) {
8c4877a4 1238 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1239 break;
1240 }
1241
8c4877a4
JP		 1242 netif_info(port, link, dev,
1243 "Logical port up: %dMbps %s Duplex\n",
1244 port->port_speed,
1245 port->full_duplex == 1 ?
1246 "Full" : "Half");
7a291083 1247
8c4877a4
JP		 1248 netif_carrier_on(dev);
1249 netif_wake_queue(dev);
7a291083
JBT		 1250 }
1251 } else
8c4877a4
JP		 1252 if (netif_carrier_ok(dev)) {
1253 netif_info(port, link, dev,
1254 "Logical port down\n");
1255 netif_carrier_off(dev);
1256 netif_stop_queue(dev);
7a291083
JBT		 1257 }
1258
1259 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1260 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1261 netif_info(port, link, dev,
1262 "Physical port up\n");
8759cf76 1263 if (prop_carrier_state)
8c4877a4 1264 netif_carrier_on(dev);
7a291083 1265 } else {
8759cf76 1266 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1267 netif_info(port, link, dev,
1268 "Physical port down\n");
8759cf76 1269 if (prop_carrier_state)
8c4877a4 1270 netif_carrier_off(dev);
7a291083
JBT		 1271 }
1272
1273 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1274 netdev_info(dev,
1275 "External switch port is primary port\n");
7a291083 1276 else
8c4877a4
JP		 1277 netdev_info(dev,
1278 "External switch port is backup port\n");
7a291083
JBT		 1279
1280 break;
1281 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1282 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1283 break;
1284 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1285 netdev_info(dev, "Port malfunction\n");
1286 netif_carrier_off(dev);
1287 netif_stop_queue(dev);
7a291083
JBT		 1288 break;
1289 default:
8c4877a4 1290 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", 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);
8c4877a4 1302 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1303
1304 while (eqe) {
8c4877a4 1305 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1306 ehea_parse_eqe(adapter, eqe->entry);
1307 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1308 pr_debug("next eqe=%p\n", 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
f76957fc 1332 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1333
e2878806 1334 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1335
1336 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1337
1338 return ret;
1339}
1340
1341static int ehea_reg_interrupts(struct net_device *dev)
1342{
1343 struct ehea_port *port = netdev_priv(dev);
1344 struct ehea_port_res *pr;
1345 int i, ret;
1346
7a291083
JBT		 1347
1348 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1349 dev->name);
1350
6b08f3ae 1351 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1352 ehea_qp_aff_irq_handler,
38515e90 1353 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1354 if (ret) {
8c4877a4
JP		 1355 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1356 port->qp_eq->attr.ist1);
7a291083
JBT		 1357 goto out_free_qpeq;
1358 }
1359
8c4877a4
JP		 1360 netif_info(port, ifup, dev,
1361 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1362 port->qp_eq->attr.ist1);
7a291083 1363
18604c54 1364
7a291083
JBT		 1365 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1366 pr = &port->port_res[i];
1367 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1368 "%s-queue%d", dev->name, i);
6b08f3ae 1369 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1370 ehea_recv_irq_handler,
38515e90 1371 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1372 pr);
1373 if (ret) {
8c4877a4
JP		 1374 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1375 i, pr->eq->attr.ist1);
7a291083
JBT		 1376 goto out_free_req;
1377 }
8c4877a4
JP		 1378 netif_info(port, ifup, dev,
1379 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1380 pr->eq->attr.ist1, i);
7a291083
JBT		 1381 }
1382out:
1383 return ret;
1384
18604c54 1385
7a291083
JBT		 1386out_free_req:
1387 while (--i >= 0) {
18604c54 1388 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1389 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1390 }
18604c54 1391
7a291083 1392out_free_qpeq:
6b08f3ae 1393 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1394 i = port->num_def_qps;
18604c54 1395
7a291083 1396 goto out;
18604c54 1397
7a291083
JBT		 1398}
1399
1400static void ehea_free_interrupts(struct net_device *dev)
1401{
1402 struct ehea_port *port = netdev_priv(dev);
1403 struct ehea_port_res *pr;
1404 int i;
1405
1406 /* send */
18604c54 1407
7a291083
JBT		 1408 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1409 pr = &port->port_res[i];
6b08f3ae 1410 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1411 netif_info(port, intr, dev,
1412 "free send irq for res %d with handle 0x%X\n",
1413 i, pr->eq->attr.ist1);
7a291083
JBT		 1414 }
1415
1416 /* associated events */
6b08f3ae 1417 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1418 netif_info(port, intr, dev,
1419 "associated event interrupt for handle 0x%X freed\n",
1420 port->qp_eq->attr.ist1);
7a291083
JBT		 1421}
1422
1423static int ehea_configure_port(struct ehea_port *port)
1424{
1425 int ret, i;
1426 u64 hret, mask;
1427 struct hcp_ehea_port_cb0 *cb0;
1428
1429 ret = -ENOMEM;
3faf2693 1430 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1431 if (!cb0)
1432 goto out;
1433
1434 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1435 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1436 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1437 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1438 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1439 PXLY_RC_VLAN_FILTER)
1440 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1441
18604c54
JBT		 1442 for (i = 0; i < port->num_mcs; i++)
1443 if (use_mcs)
1444 cb0->default_qpn_arr[i] =
1445 port->port_res[i].qp->init_attr.qp_nr;
1446 else
1447 cb0->default_qpn_arr[i] =
1448 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1449
7a291083
JBT		 1450 if (netif_msg_ifup(port))
1451 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1452
1453 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1454 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1455
1456 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1457 port->logical_port_id,
1458 H_PORT_CB0, mask, cb0);
1459 ret = -EIO;
1460 if (hret != H_SUCCESS)
1461 goto out_free;
1462
1463 ret = 0;
1464
1465out_free:
3faf2693 1466 free_page((unsigned long)cb0);
7a291083
JBT		 1467out:
1468 return ret;
1469}
1470
e542aa6b 1471int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1472{
e542aa6b 1473 int ret;
7a291083
JBT		 1474 struct ehea_adapter *adapter = pr->port->adapter;
1475
e542aa6b
JBT		 1476 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1477 if (ret)
7a291083
JBT		 1478 goto out;
1479
e542aa6b
JBT		 1480 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1481 if (ret)
1482 goto out_free;
7a291083
JBT		 1483
1484 return 0;
1485
e542aa6b
JBT		 1486out_free:
1487 ehea_rem_mr(&pr->send_mr);
7a291083 1488out:
8c4877a4 1489 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1490 return -EIO;
1491}
1492
e542aa6b 1493int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1494{
8e95a202
JP		 1495 if ((ehea_rem_mr(&pr->send_mr)) ||
1496 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1497 return -EIO;
1498 else
1499 return 0;
7a291083
JBT		 1500}
1501
1502static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1503{
508d2b5d 1504 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1505
89bf67f1 1506 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1507 if (!q_skba->arr)
1508 return -ENOMEM;
1509
7a291083
JBT		 1510 q_skba->len = max_q_entries;
1511 q_skba->index = 0;
1512 q_skba->os_skbs = 0;
1513
1514 return 0;
1515}
1516
1517static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1518 struct port_res_cfg *pr_cfg, int queue_token)
1519{
1520 struct ehea_adapter *adapter = port->adapter;
1521 enum ehea_eq_type eq_type = EHEA_EQ;
1522 struct ehea_qp_init_attr *init_attr = NULL;
1523 int ret = -EIO;
ce45b873
BL		 1524 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1525
1526 tx_bytes = pr->tx_bytes;
1527 tx_packets = pr->tx_packets;
1528 rx_bytes = pr->rx_bytes;
1529 rx_packets = pr->rx_packets;
7a291083
JBT		 1530
1531 memset(pr, 0, sizeof(struct ehea_port_res));
1532
ce45b873
BL		 1533 pr->tx_bytes = rx_bytes;
1534 pr->tx_packets = tx_packets;
1535 pr->rx_bytes = rx_bytes;
1536 pr->rx_packets = rx_packets;
1537
7a291083 1538 pr->port = port;
7a291083
JBT		 1539 spin_lock_init(&pr->xmit_lock);
1540 spin_lock_init(&pr->netif_queue);
1541
18604c54
JBT		 1542 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1543 if (!pr->eq) {
8c4877a4 1544 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1545 goto out_free;
1546 }
1547
1548 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1549 pr->eq->fw_handle,
7a291083
JBT		 1550 port->logical_port_id);
1551 if (!pr->recv_cq) {
8c4877a4 1552 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1553 goto out_free;
1554 }
1555
1556 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1557 pr->eq->fw_handle,
7a291083
JBT		 1558 port->logical_port_id);
1559 if (!pr->send_cq) {
8c4877a4 1560 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1561 goto out_free;
1562 }
1563
1564 if (netif_msg_ifup(port))
8c4877a4
JP		 1565 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1566 pr->send_cq->attr.act_nr_of_cqes,
1567 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1568
1569 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1570 if (!init_attr) {
1571 ret = -ENOMEM;
8c4877a4 1572 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1573 goto out_free;
1574 }
1575
1576 init_attr->low_lat_rq1 = 1;
1577 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1578 init_attr->rq_count = 3;
1579 init_attr->qp_token = queue_token;
1580 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1581 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1582 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1583 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1584 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1585 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1586 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1587 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1588 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1589 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1590 init_attr->port_nr = port->logical_port_id;
1591 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1592 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1593 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1594
1595 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1596 if (!pr->qp) {
8c4877a4 1597 pr_err("create_qp failed\n");
7a291083
JBT		 1598 ret = -EIO;
1599 goto out_free;
1600 }
1601
1602 if (netif_msg_ifup(port))
8c4877a4
JP		 1603 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1604 init_attr->qp_nr,
1605 init_attr->act_nr_send_wqes,
1606 init_attr->act_nr_rwqes_rq1,
1607 init_attr->act_nr_rwqes_rq2,
1608 init_attr->act_nr_rwqes_rq3);
7a291083 1609
44fb3126
TK		 1610 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1611
1612 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1613 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1614 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1615 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1616 if (ret)
1617 goto out_free;
1618
1619 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1620 if (ehea_gen_smrs(pr) != 0) {
1621 ret = -EIO;
1622 goto out_free;
1623 }
18604c54 1624
7a291083
JBT		 1625 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1626
1627 kfree(init_attr);
18604c54 1628
bea3348e 1629 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1630
d4dc4ec9
JBT		 1631 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1632 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1633 pr->lro_mgr.lro_arr = pr->lro_desc;
1634 pr->lro_mgr.get_skb_header = get_skb_hdr;
1635 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1636 pr->lro_mgr.dev = port->netdev;
1637 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1638 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1639
7a291083
JBT		 1640 ret = 0;
1641 goto out;
1642
1643out_free:
1644 kfree(init_attr);
1645 vfree(pr->sq_skba.arr);
1646 vfree(pr->rq1_skba.arr);
1647 vfree(pr->rq2_skba.arr);
1648 vfree(pr->rq3_skba.arr);
1649 ehea_destroy_qp(pr->qp);
1650 ehea_destroy_cq(pr->send_cq);
1651 ehea_destroy_cq(pr->recv_cq);
18604c54 1652 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1653out:
1654 return ret;
1655}
1656
1657static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1658{
1659 int ret, i;
1660
357eb46d
HH		 1661 if (pr->qp)
1662 netif_napi_del(&pr->napi);
1663
7a291083
JBT		 1664 ret = ehea_destroy_qp(pr->qp);
1665
1666 if (!ret) {
1667 ehea_destroy_cq(pr->send_cq);
1668 ehea_destroy_cq(pr->recv_cq);
18604c54 1669 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1670
1671 for (i = 0; i < pr->rq1_skba.len; i++)
1672 if (pr->rq1_skba.arr[i])
1673 dev_kfree_skb(pr->rq1_skba.arr[i]);
1674
1675 for (i = 0; i < pr->rq2_skba.len; i++)
1676 if (pr->rq2_skba.arr[i])
1677 dev_kfree_skb(pr->rq2_skba.arr[i]);
1678
1679 for (i = 0; i < pr->rq3_skba.len; i++)
1680 if (pr->rq3_skba.arr[i])
1681 dev_kfree_skb(pr->rq3_skba.arr[i]);
1682
1683 for (i = 0; i < pr->sq_skba.len; i++)
1684 if (pr->sq_skba.arr[i])
1685 dev_kfree_skb(pr->sq_skba.arr[i]);
1686
1687 vfree(pr->rq1_skba.arr);
1688 vfree(pr->rq2_skba.arr);
1689 vfree(pr->rq3_skba.arr);
1690 vfree(pr->sq_skba.arr);
1691 ret = ehea_rem_smrs(pr);
1692 }
1693 return ret;
1694}
1695
1696/*
1697 * The write_* functions store information in swqe which is used by
1698 * the hardware to calculate the ip/tcp/udp checksum
1699 */
1700
1701static inline void write_ip_start_end(struct ehea_swqe *swqe,
1702 const struct sk_buff *skb)
1703{
eddc9ec5 1704 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1705 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1706}
1707
1708static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1709 const struct sk_buff *skb)
1710{
1711 swqe->tcp_offset =
1712 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1713
1714 swqe->tcp_end = (u16)skb->len - 1;
1715}
1716
1717static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1718 const struct sk_buff *skb)
1719{
1720 swqe->tcp_offset =
1721 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1722
1723 swqe->tcp_end = (u16)skb->len - 1;
1724}
1725
1726
1727static void write_swqe2_TSO(struct sk_buff *skb,
1728 struct ehea_swqe *swqe, u32 lkey)
1729{
1730 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1731 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1732 int skb_data_size = skb_headlen(skb);
7a291083 1733 int headersize;
7a291083
JBT		 1734
1735 /* Packet is TCP with TSO enabled */
1736 swqe->tx_control |= EHEA_SWQE_TSO;
1737 swqe->mss = skb_shinfo(skb)->gso_size;
1738 /* copy only eth/ip/tcp headers to immediate data and
1739 * the rest of skb->data to sg1entry
1740 */
ab6a5bb6 1741 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1742
e743d313 1743 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1744
1745 if (skb_data_size >= headersize) {
1746 /* copy immediate data */
d626f62b 1747 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1748 swqe->immediate_data_length = headersize;
1749
1750 if (skb_data_size > headersize) {
1751 /* set sg1entry data */
1752 sg1entry->l_key = lkey;
1753 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1754 sg1entry->vaddr =
1755 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1756 swqe->descriptors++;
1757 }
1758 } else
8c4877a4 1759 pr_err("cannot handle fragmented headers\n");
7a291083
JBT		 1760}
1761
1762static void write_swqe2_nonTSO(struct sk_buff *skb,
1763 struct ehea_swqe *swqe, u32 lkey)
1764{
e743d313 1765 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1766 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1767 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1768
1769 /* Packet is any nonTSO type
1770 *
1771 * Copy as much as possible skb->data to immediate data and
1772 * the rest to sg1entry
1773 */
1774 if (skb_data_size >= SWQE2_MAX_IMM) {
1775 /* copy immediate data */
d626f62b 1776 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1777
1778 swqe->immediate_data_length = SWQE2_MAX_IMM;
1779
1780 if (skb_data_size > SWQE2_MAX_IMM) {
1781 /* copy sg1entry data */
1782 sg1entry->l_key = lkey;
1783 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1784 sg1entry->vaddr =
1785 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1786 swqe->descriptors++;
1787 }
1788 } else {
d626f62b 1789 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1790 swqe->immediate_data_length = skb_data_size;
1791 }
1792}
1793
1794static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1795 struct ehea_swqe *swqe, u32 lkey)
1796{
1797 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1798 skb_frag_t *frag;
1799 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1800
1801 nfrags = skb_shinfo(skb)->nr_frags;
1802 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1803 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1804 swqe->descriptors = 0;
1805 sg1entry_contains_frag_data = 0;
1806
1807 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1808 write_swqe2_TSO(skb, swqe, lkey);
1809 else
1810 write_swqe2_nonTSO(skb, swqe, lkey);
1811
1812 /* write descriptors */
1813 if (nfrags > 0) {
1814 if (swqe->descriptors == 0) {
1815 /* sg1entry not yet used */
1816 frag = &skb_shinfo(skb)->frags[0];
1817
1818 /* copy sg1entry data */
1819 sg1entry->l_key = lkey;
1820 sg1entry->len = frag->size;
44a5b3d5
TK		 1821 sg1entry->vaddr =
1822 ehea_map_vaddr(page_address(frag->page)
1823 + frag->page_offset);
7a291083
JBT		 1824 swqe->descriptors++;
1825 sg1entry_contains_frag_data = 1;
1826 }
1827
1828 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1829
1830 frag = &skb_shinfo(skb)->frags[i];
1831 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1832
1833 sgentry->l_key = lkey;
1834 sgentry->len = frag->size;
44a5b3d5
TK		 1835 sgentry->vaddr =
1836 ehea_map_vaddr(page_address(frag->page)
1837 + frag->page_offset);
7a291083
JBT		 1838 swqe->descriptors++;
1839 }
1840 }
1841}
1842
1843static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1844{
1845 int ret = 0;
1846 u64 hret;
1847 u8 reg_type;
1848
1849 /* De/Register untagged packets */
1850 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1851 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1852 port->logical_port_id,
1853 reg_type, port->mac_addr, 0, hcallid);
1854 if (hret != H_SUCCESS) {
8c4877a4
JP		 1855 pr_err("%sregistering bc address failed (tagged)\n",
1856 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1857 ret = -EIO;
1858 goto out_herr;
1859 }
1860
1861 /* De/Register VLAN packets */
1862 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1863 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1864 port->logical_port_id,
1865 reg_type, port->mac_addr, 0, hcallid);
1866 if (hret != H_SUCCESS) {
8c4877a4
JP		 1867 pr_err("%sregistering bc address failed (vlan)\n",
1868 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1869 ret = -EIO;
1870 }
1871out_herr:
1872 return ret;
1873}
1874
1875static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1876{
1877 struct ehea_port *port = netdev_priv(dev);
1878 struct sockaddr *mac_addr = sa;
1879 struct hcp_ehea_port_cb0 *cb0;
1880 int ret;
1881 u64 hret;
1882
1883 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1884 ret = -EADDRNOTAVAIL;
1885 goto out;
1886 }
1887
3faf2693 1888 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1889 if (!cb0) {
8c4877a4 1890 pr_err("no mem for cb0\n");
7a291083
JBT		 1891 ret = -ENOMEM;
1892 goto out;
1893 }
1894
1895 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1896
1897 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1898
1899 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1900 port->logical_port_id, H_PORT_CB0,
1901 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1902 if (hret != H_SUCCESS) {
1903 ret = -EIO;
1904 goto out_free;
1905 }
1906
1907 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1908
1909 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1910 if (port->state == EHEA_PORT_UP) {
1911 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1912 if (ret)
1913 goto out_upregs;
1914 }
7a291083
JBT		 1915
1916 port->mac_addr = cb0->port_mac_addr << 16;
1917
1918 /* Register new MAC in pHYP */
00aaea2f
JBT		 1919 if (port->state == EHEA_PORT_UP) {
1920 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1921 if (ret)
1922 goto out_upregs;
1923 }
7a291083
JBT		 1924
1925 ret = 0;
21eee2dd
TK		 1926
1927out_upregs:
1928 ehea_update_bcmc_registrations();
7a291083 1929out_free:
3faf2693 1930 free_page((unsigned long)cb0);
7a291083
JBT		 1931out:
1932 return ret;
1933}
1934
1935static void ehea_promiscuous_error(u64 hret, int enable)
1936{
7674a588 1937 if (hret == H_AUTHORITY)
8c4877a4
JP		 1938 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1939 enable == 1 ? "en" : "dis");
7674a588 1940 else
8c4877a4
JP		 1941 pr_err("failed %sabling promiscuous mode\n",
1942 enable == 1 ? "en" : "dis");
7a291083
JBT		 1943}
1944
1945static void ehea_promiscuous(struct net_device *dev, int enable)
1946{
1947 struct ehea_port *port = netdev_priv(dev);
1948 struct hcp_ehea_port_cb7 *cb7;
1949 u64 hret;
1950
aa3bc6c6 1951 if (enable == port->promisc)
7a291083
JBT		 1952 return;
1953
3faf2693 1954 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1955 if (!cb7) {
8c4877a4 1956 pr_err("no mem for cb7\n");
7a291083
JBT		 1957 goto out;
1958 }
1959
1960 /* Modify Pxs_DUCQPN in CB7 */
1961 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1962
1963 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1964 port->logical_port_id,
1965 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1966 if (hret) {
1967 ehea_promiscuous_error(hret, enable);
1968 goto out;
1969 }
1970
1971 port->promisc = enable;
1972out:
3faf2693 1973 free_page((unsigned long)cb7);
7a291083
JBT		 1974}
1975
1976static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1977 u32 hcallid)
1978{
1979 u64 hret;
1980 u8 reg_type;
1981
1982 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1983 | EHEA_BCMC_UNTAGGED;
1984
1985 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1986 port->logical_port_id,
1987 reg_type, mc_mac_addr, 0, hcallid);
1988 if (hret)
1989 goto out;
1990
1991 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1992 | EHEA_BCMC_VLANID_ALL;
1993
1994 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1995 port->logical_port_id,
1996 reg_type, mc_mac_addr, 0, hcallid);
1997out:
1998 return hret;
1999}
2000
2001static int ehea_drop_multicast_list(struct net_device *dev)
2002{
2003 struct ehea_port *port = netdev_priv(dev);
2004 struct ehea_mc_list *mc_entry = port->mc_list;
2005 struct list_head *pos;
2006 struct list_head *temp;
2007 int ret = 0;
2008 u64 hret;
2009
2010 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2011 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2012
2013 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2014 H_DEREG_BCMC);
2015 if (hret) {
8c4877a4 2016 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 2017 ret = -EIO;
2018 }
2019
2020 list_del(pos);
2021 kfree(mc_entry);
2022 }
2023 return ret;
2024}
2025
2026static void ehea_allmulti(struct net_device *dev, int enable)
2027{
2028 struct ehea_port *port = netdev_priv(dev);
2029 u64 hret;
2030
2031 if (!port->allmulti) {
2032 if (enable) {
2033 /* Enable ALLMULTI */
2034 ehea_drop_multicast_list(dev);
2035 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2036 if (!hret)
2037 port->allmulti = 1;
2038 else
8c4877a4
JP		 2039 netdev_err(dev,
2040 "failed enabling IFF_ALLMULTI\n");
7a291083
JBT		 2041 }
2042 } else
2043 if (!enable) {
2044 /* Disable ALLMULTI */
2045 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2046 if (!hret)
2047 port->allmulti = 0;
2048 else
8c4877a4
JP		 2049 netdev_err(dev,
2050 "failed disabling IFF_ALLMULTI\n");
7a291083
JBT		 2051 }
2052}
2053
508d2b5d 2054static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2055{
2056 struct ehea_mc_list *ehea_mcl_entry;
2057 u64 hret;
2058
1e1675cc 2059 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 2060 if (!ehea_mcl_entry) {
8c4877a4 2061 pr_err("no mem for mcl_entry\n");
7a291083
JBT		 2062 return;
2063 }
2064
2065 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2066
2067 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2068
2069 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2070 H_REG_BCMC);
2071 if (!hret)
2072 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2073 else {
8c4877a4 2074 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 2075 kfree(ehea_mcl_entry);
2076 }
2077}
2078
2079static void ehea_set_multicast_list(struct net_device *dev)
2080{
2081 struct ehea_port *port = netdev_priv(dev);
22bedad3 2082 struct netdev_hw_addr *ha;
48e2f183 2083 int ret;
7a291083
JBT		 2084
2085 if (dev->flags & IFF_PROMISC) {
2086 ehea_promiscuous(dev, 1);
2087 return;
2088 }
2089 ehea_promiscuous(dev, 0);
2090
2091 if (dev->flags & IFF_ALLMULTI) {
2092 ehea_allmulti(dev, 1);
21eee2dd 2093 goto out;
7a291083
JBT		 2094 }
2095 ehea_allmulti(dev, 0);
2096
4cd24eaf 2097 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2098 ret = ehea_drop_multicast_list(dev);
2099 if (ret) {
2100 /* Dropping the current multicast list failed.
2101 * Enabling ALL_MULTI is the best we can do.
2102 */
2103 ehea_allmulti(dev, 1);
2104 }
2105
4cd24eaf 2106 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 2107 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
2108 port->adapter->max_mc_mac);
7a291083
JBT		 2109 goto out;
2110 }
2111
22bedad3
JP		 2112 netdev_for_each_mc_addr(ha, dev)
2113 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2114
7a291083
JBT		 2115 }
2116out:
21eee2dd 2117 ehea_update_bcmc_registrations();
7a291083
JBT		 2118}
2119
2120static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2121{
2122 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2123 return -EINVAL;
2124 dev->mtu = new_mtu;
2125 return 0;
2126}
2127
2128static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2129 struct ehea_swqe *swqe, u32 lkey)
2130{
2131 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2132 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2133
7a291083
JBT		 2134 /* IPv4 */
2135 swqe->tx_control |= EHEA_SWQE_CRC
2136 | EHEA_SWQE_IP_CHECKSUM
2137 | EHEA_SWQE_TCP_CHECKSUM
2138 | EHEA_SWQE_IMM_DATA_PRESENT
2139 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2140
2141 write_ip_start_end(swqe, skb);
2142
eddc9ec5 2143 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2144 if ((iph->frag_off & IP_MF) ||
2145 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2146 /* IP fragment, so don't change cs */
2147 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2148 else
2149 write_udp_offset_end(swqe, skb);
eddc9ec5 2150 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2151 write_tcp_offset_end(swqe, skb);
2152 }
2153
2154 /* icmp (big data) and ip segmentation packets (all other ip
2155 packets) do not require any special handling */
2156
2157 } else {
2158 /* Other Ethernet Protocol */
2159 swqe->tx_control |= EHEA_SWQE_CRC
2160 | EHEA_SWQE_IMM_DATA_PRESENT
2161 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2162 }
2163
2164 write_swqe2_data(skb, dev, swqe, lkey);
2165}
2166
2167static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2168 struct ehea_swqe *swqe)
2169{
2170 int nfrags = skb_shinfo(skb)->nr_frags;
2171 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2172 skb_frag_t *frag;
2173 int i;
2174
2175 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2176 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2177
7a291083
JBT		 2178 /* IPv4 */
2179 write_ip_start_end(swqe, skb);
2180
eddc9ec5 2181 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2182 swqe->tx_control |= EHEA_SWQE_CRC
2183 | EHEA_SWQE_IP_CHECKSUM
2184 | EHEA_SWQE_TCP_CHECKSUM
2185 | EHEA_SWQE_IMM_DATA_PRESENT;
2186
2187 write_tcp_offset_end(swqe, skb);
2188
eddc9ec5 2189 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2190 if ((iph->frag_off & IP_MF) ||
2191 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2192 /* IP fragment, so don't change cs */
2193 swqe->tx_control |= EHEA_SWQE_CRC
2194 | EHEA_SWQE_IMM_DATA_PRESENT;
2195 else {
2196 swqe->tx_control |= EHEA_SWQE_CRC
2197 | EHEA_SWQE_IP_CHECKSUM
2198 | EHEA_SWQE_TCP_CHECKSUM
2199 | EHEA_SWQE_IMM_DATA_PRESENT;
2200
2201 write_udp_offset_end(swqe, skb);
2202 }
2203 } else {
2204 /* icmp (big data) and
2205 ip segmentation packets (all other ip packets) */
2206 swqe->tx_control |= EHEA_SWQE_CRC
2207 | EHEA_SWQE_IP_CHECKSUM
2208 | EHEA_SWQE_IMM_DATA_PRESENT;
2209 }
2210 } else {
2211 /* Other Ethernet Protocol */
2212 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2213 }
2214 /* copy (immediate) data */
2215 if (nfrags == 0) {
2216 /* data is in a single piece */
d626f62b 2217 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2218 } else {
2219 /* first copy data from the skb->data buffer ... */
d626f62b 2220 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2221 skb_headlen(skb));
2222 imm_data += skb_headlen(skb);
7a291083
JBT		 2223
2224 /* ... then copy data from the fragments */
2225 for (i = 0; i < nfrags; i++) {
2226 frag = &skb_shinfo(skb)->frags[i];
2227 memcpy(imm_data,
2228 page_address(frag->page) + frag->page_offset,
2229 frag->size);
2230 imm_data += frag->size;
2231 }
2232 }
2233 swqe->immediate_data_length = skb->len;
2234 dev_kfree_skb(skb);
2235}
2236
18604c54
JBT		 2237static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2238{
2239 struct tcphdr *tcp;
2240 u32 tmp;
2241
2242 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2243 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2244 tcp = (struct tcphdr *)(skb_network_header(skb) +
2245 (ip_hdr(skb)->ihl * 4));
18604c54 2246 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2247 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2248 return tmp % num_qps;
508d2b5d 2249 } else
18604c54
JBT		 2250 return 0;
2251}
2252
7a291083
JBT		 2253static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2254{
2255 struct ehea_port *port = netdev_priv(dev);
2256 struct ehea_swqe *swqe;
2257 unsigned long flags;
2258 u32 lkey;
2259 int swqe_index;
18604c54
JBT		 2260 struct ehea_port_res *pr;
2261
2262 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2263
18604c54
JBT		 2264 if (!spin_trylock(&pr->xmit_lock))
2265 return NETDEV_TX_BUSY;
2266
2267 if (pr->queue_stopped) {
2268 spin_unlock(&pr->xmit_lock);
2269 return NETDEV_TX_BUSY;
2270 }
7a291083
JBT		 2271
2272 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2273 memset(swqe, 0, SWQE_HEADER_SIZE);
2274 atomic_dec(&pr->swqe_avail);
2275
e5ccd961
ED		 2276 if (vlan_tx_tag_present(skb)) {
2277 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2278 swqe->vlan_tag = vlan_tx_tag_get(skb);
2279 }
2280
ce45b873
BL		 2281 pr->tx_packets++;
2282 pr->tx_bytes += skb->len;
2283
7a291083
JBT		 2284 if (skb->len <= SWQE3_MAX_IMM) {
2285 u32 sig_iv = port->sig_comp_iv;
2286 u32 swqe_num = pr->swqe_id_counter;
2287 ehea_xmit3(skb, dev, swqe);
2288 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2289 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2290 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2291 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2292 sig_iv);
2293 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2294 pr->swqe_ll_count = 0;
2295 } else
2296 pr->swqe_ll_count += 1;
2297 } else {
2298 swqe->wr_id =
2299 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2300 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2301 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2302 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2303 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2304
2305 pr->sq_skba.index++;
2306 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2307
2308 lkey = pr->send_mr.lkey;
2309 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2310 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2311 }
2312 pr->swqe_id_counter += 1;
2313
8c4877a4
JP		 2314 netif_info(port, tx_queued, dev,
2315 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2316 if (netif_msg_tx_queued(port))
bff0a55f 2317 ehea_dump(swqe, 512, "swqe");
7a291083 2318
2c69448b
JBT		 2319 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2320 netif_stop_queue(dev);
2321 swqe->tx_control |= EHEA_SWQE_PURGE;
2322 }
44c82152 2323
7a291083 2324 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2325
2326 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2327 spin_lock_irqsave(&pr->netif_queue, flags);
2328 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2329 pr->p_stats.queue_stopped++;
7a291083
JBT		 2330 netif_stop_queue(dev);
2331 pr->queue_stopped = 1;
2332 }
2333 spin_unlock_irqrestore(&pr->netif_queue, flags);
2334 }
1ae5dc34 2335 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2336 spin_unlock(&pr->xmit_lock);
2c69448b 2337
7a291083
JBT		 2338 return NETDEV_TX_OK;
2339}
2340
2341static void ehea_vlan_rx_register(struct net_device *dev,
2342 struct vlan_group *grp)
2343{
2344 struct ehea_port *port = netdev_priv(dev);
2345 struct ehea_adapter *adapter = port->adapter;
2346 struct hcp_ehea_port_cb1 *cb1;
2347 u64 hret;
2348
2349 port->vgrp = grp;
2350
3faf2693 2351 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2352 if (!cb1) {
8c4877a4 2353 pr_err("no mem for cb1\n");
7a291083
JBT		 2354 goto out;
2355 }
2356
7a291083
JBT		 2357 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2358 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2359 if (hret != H_SUCCESS)
8c4877a4 2360 pr_err("modify_ehea_port failed\n");
7a291083 2361
3faf2693 2362 free_page((unsigned long)cb1);
7a291083
JBT		 2363out:
2364 return;
2365}
2366
2367static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2368{
2369 struct ehea_port *port = netdev_priv(dev);
2370 struct ehea_adapter *adapter = port->adapter;
2371 struct hcp_ehea_port_cb1 *cb1;
2372 int index;
2373 u64 hret;
2374
3faf2693 2375 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2376 if (!cb1) {
8c4877a4 2377 pr_err("no mem for cb1\n");
7a291083
JBT		 2378 goto out;
2379 }
2380
2381 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2382 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2383 if (hret != H_SUCCESS) {
8c4877a4 2384 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2385 goto out;
2386 }
2387
2388 index = (vid / 64);
dec590c1 2389 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2390
2391 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2392 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2393 if (hret != H_SUCCESS)
8c4877a4 2394 pr_err("modify_ehea_port failed\n");
7a291083 2395out:
3faf2693 2396 free_page((unsigned long)cb1);
7a291083
JBT		 2397 return;
2398}
2399
2400static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2401{
2402 struct ehea_port *port = netdev_priv(dev);
2403 struct ehea_adapter *adapter = port->adapter;
2404 struct hcp_ehea_port_cb1 *cb1;
2405 int index;
2406 u64 hret;
2407
5c15bdec 2408 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2409
3faf2693 2410 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2411 if (!cb1) {
8c4877a4 2412 pr_err("no mem for cb1\n");
7a291083
JBT		 2413 goto out;
2414 }
2415
2416 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2417 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2418 if (hret != H_SUCCESS) {
8c4877a4 2419 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2420 goto out;
2421 }
2422
2423 index = (vid / 64);
dec590c1 2424 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2425
2426 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2427 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2428 if (hret != H_SUCCESS)
8c4877a4 2429 pr_err("modify_ehea_port failed\n");
7a291083 2430out:
3faf2693 2431 free_page((unsigned long)cb1);
7a291083
JBT		 2432}
2433
2434int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2435{
2436 int ret = -EIO;
2437 u64 hret;
2438 u16 dummy16 = 0;
2439 u64 dummy64 = 0;
508d2b5d 2440 struct hcp_modify_qp_cb0 *cb0;
7a291083 2441
3faf2693 2442 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2443 if (!cb0) {
2444 ret = -ENOMEM;
2445 goto out;
2446 }
2447
2448 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2449 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2450 if (hret != H_SUCCESS) {
8c4877a4 2451 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2452 goto out;
2453 }
2454
2455 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2456 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2457 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2458 &dummy64, &dummy64, &dummy16, &dummy16);
2459 if (hret != H_SUCCESS) {
8c4877a4 2460 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2461 goto out;
2462 }
2463
2464 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2465 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2466 if (hret != H_SUCCESS) {
8c4877a4 2467 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2468 goto out;
2469 }
2470
2471 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2472 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2473 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2474 &dummy64, &dummy64, &dummy16, &dummy16);
2475 if (hret != H_SUCCESS) {
8c4877a4 2476 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2477 goto out;
2478 }
2479
2480 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2481 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2482 if (hret != H_SUCCESS) {
8c4877a4 2483 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2484 goto out;
2485 }
2486
2487 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2488 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2489 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2490 &dummy64, &dummy64, &dummy16, &dummy16);
2491 if (hret != H_SUCCESS) {
8c4877a4 2492 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2493 goto out;
2494 }
2495
2496 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2497 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2498 if (hret != H_SUCCESS) {
8c4877a4 2499 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2500 goto out;
2501 }
2502
2503 ret = 0;
2504out:
3faf2693 2505 free_page((unsigned long)cb0);
7a291083
JBT		 2506 return ret;
2507}
2508
2509static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2510 int add_tx_qps)
2511{
2512 int ret, i;
2513 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2514 enum ehea_eq_type eq_type = EHEA_EQ;
2515
2516 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2517 EHEA_MAX_ENTRIES_EQ, 1);
2518 if (!port->qp_eq) {
2519 ret = -EINVAL;
8c4877a4 2520 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2521 goto out_kill_eq;
2522 }
2523
2524 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2525 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2526 pr_cfg.max_entries_sq = sq_entries;
2527 pr_cfg.max_entries_rq1 = rq1_entries;
2528 pr_cfg.max_entries_rq2 = rq2_entries;
2529 pr_cfg.max_entries_rq3 = rq3_entries;
2530
2531 pr_cfg_small_rx.max_entries_rcq = 1;
2532 pr_cfg_small_rx.max_entries_scq = sq_entries;
2533 pr_cfg_small_rx.max_entries_sq = sq_entries;
2534 pr_cfg_small_rx.max_entries_rq1 = 1;
2535 pr_cfg_small_rx.max_entries_rq2 = 1;
2536 pr_cfg_small_rx.max_entries_rq3 = 1;
2537
2538 for (i = 0; i < def_qps; i++) {
2539 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2540 if (ret)
2541 goto out_clean_pr;
2542 }
2543 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2544 ret = ehea_init_port_res(port, &port->port_res[i],
2545 &pr_cfg_small_rx, i);
2546 if (ret)
2547 goto out_clean_pr;
2548 }
2549
2550 return 0;
2551
2552out_clean_pr:
2553 while (--i >= 0)
2554 ehea_clean_portres(port, &port->port_res[i]);
2555
2556out_kill_eq:
2557 ehea_destroy_eq(port->qp_eq);
2558 return ret;
2559}
2560
2561static int ehea_clean_all_portres(struct ehea_port *port)
2562{
2563 int ret = 0;
2564 int i;
2565
508d2b5d 2566 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2567 ret |= ehea_clean_portres(port, &port->port_res[i]);
2568
2569 ret |= ehea_destroy_eq(port->qp_eq);
2570
2571 return ret;
2572}
2573
35cf2e2e 2574static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2575{
35cf2e2e
TK		 2576 if (adapter->active_ports)
2577 return;
1211bb6d
TK		 2578
2579 ehea_rem_mr(&adapter->mr);
2580}
2581
35cf2e2e 2582static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2583{
35cf2e2e
TK		 2584 if (adapter->active_ports)
2585 return 0;
1211bb6d
TK		 2586
2587 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2588}
2589
7a291083
JBT		 2590static int ehea_up(struct net_device *dev)
2591{
2592 int ret, i;
2593 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2594
2595 if (port->state == EHEA_PORT_UP)
2596 return 0;
2597
2598 ret = ehea_port_res_setup(port, port->num_def_qps,
2599 port->num_add_tx_qps);
2600 if (ret) {
8c4877a4 2601 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2602 goto out;
2603 }
2604
2605 /* Set default QP for this port */
2606 ret = ehea_configure_port(port);
2607 if (ret) {
8c4877a4 2608 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2609 goto out_clean_pr;
2610 }
2611
7a291083
JBT		 2612 ret = ehea_reg_interrupts(dev);
2613 if (ret) {
8c4877a4 2614 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2615 goto out_clean_pr;
7a291083
JBT		 2616 }
2617
508d2b5d 2618 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2619 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2620 if (ret) {
8c4877a4 2621 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2622 goto out_free_irqs;
2623 }
2624 }
2625
508d2b5d 2626 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2627 ret = ehea_fill_port_res(&port->port_res[i]);
2628 if (ret) {
8c4877a4 2629 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2630 goto out_free_irqs;
2631 }
2632 }
2633
21eee2dd
TK		 2634 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2635 if (ret) {
2636 ret = -EIO;
2637 goto out_free_irqs;
2638 }
2639
7a291083 2640 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2641
2642 ret = 0;
7a291083
JBT		 2643 goto out;
2644
2645out_free_irqs:
2646 ehea_free_interrupts(dev);
2647
7a291083
JBT		 2648out_clean_pr:
2649 ehea_clean_all_portres(port);
2650out:
44c82152 2651 if (ret)
8c4877a4 2652 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2653
21eee2dd 2654 ehea_update_bcmc_registrations();
21eee2dd 2655 ehea_update_firmware_handles();
21eee2dd 2656
7a291083
JBT		 2657 return ret;
2658}
2659
bea3348e
SH		 2660static void port_napi_disable(struct ehea_port *port)
2661{
2662 int i;
2663
0173b793 2664 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2665 napi_disable(&port->port_res[i].napi);
2666}
2667
2668static void port_napi_enable(struct ehea_port *port)
2669{
2670 int i;
2671
0173b793 2672 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2673 napi_enable(&port->port_res[i].napi);
2674}
2675
7a291083
JBT		 2676static int ehea_open(struct net_device *dev)
2677{
2678 int ret;
2679 struct ehea_port *port = netdev_priv(dev);
2680
a5af6ad3 2681 mutex_lock(&port->port_lock);
7a291083 2682
8c4877a4 2683 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2684
2685 ret = ehea_up(dev);
bea3348e
SH		 2686 if (!ret) {
2687 port_napi_enable(port);
7a291083 2688 netif_start_queue(dev);
bea3348e 2689 }
7a291083 2690
a5af6ad3 2691 mutex_unlock(&port->port_lock);
7a291083
JBT		 2692
2693 return ret;
2694}
2695
2696static int ehea_down(struct net_device *dev)
2697{
bea3348e 2698 int ret;
7a291083
JBT		 2699 struct ehea_port *port = netdev_priv(dev);
2700
2701 if (port->state == EHEA_PORT_DOWN)
2702 return 0;
2703
2704 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2705 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2706
7a291083
JBT		 2707 ehea_free_interrupts(dev);
2708
7a291083 2709 port->state = EHEA_PORT_DOWN;
44c82152 2710
21eee2dd 2711 ehea_update_bcmc_registrations();
21eee2dd 2712
44c82152
TK		 2713 ret = ehea_clean_all_portres(port);
2714 if (ret)
8c4877a4 2715 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2716
21eee2dd 2717 ehea_update_firmware_handles();
21eee2dd 2718
7a291083
JBT		 2719 return ret;
2720}
2721
2722static int ehea_stop(struct net_device *dev)
2723{
2724 int ret;
2725 struct ehea_port *port = netdev_priv(dev);
2726
8c4877a4 2727 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2728
2f69ae01 2729 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2730 cancel_work_sync(&port->reset_task);
a5af6ad3 2731 mutex_lock(&port->port_lock);
7a291083 2732 netif_stop_queue(dev);
0173b793 2733 port_napi_disable(port);
7a291083 2734 ret = ehea_down(dev);
a5af6ad3 2735 mutex_unlock(&port->port_lock);
2f69ae01 2736 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2737 return ret;
2738}
2739
22559c5d 2740static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2741{
2742 struct ehea_qp qp = *orig_qp;
2743 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2744 struct ehea_swqe *swqe;
2745 int wqe_index;
2746 int i;
2747
2748 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2749 swqe = ehea_get_swqe(&qp, &wqe_index);
2750 swqe->tx_control |= EHEA_SWQE_PURGE;
2751 }
2752}
2753
22559c5d 2754static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2755{
2756 int i;
2757
2758 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2759 struct ehea_port_res *pr = &port->port_res[i];
2760 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2761 int ret;
2762
2763 ret = wait_event_timeout(port->swqe_avail_wq,
2764 atomic_read(&pr->swqe_avail) >= swqe_max,
2765 msecs_to_jiffies(100));
2766
2767 if (!ret) {
8c4877a4 2768 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2769 break;
44fb3126
TK		 2770 }
2771 }
2772}
2773
2c69448b
JBT		 2774int ehea_stop_qps(struct net_device *dev)
2775{
2776 struct ehea_port *port = netdev_priv(dev);
2777 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2778 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2779 int ret = -EIO;
2780 int dret;
2781 int i;
2782 u64 hret;
2783 u64 dummy64 = 0;
2784 u16 dummy16 = 0;
2785
3faf2693 2786 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2787 if (!cb0) {
2788 ret = -ENOMEM;
2789 goto out;
2790 }
2791
2792 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2793 struct ehea_port_res *pr = &port->port_res[i];
2794 struct ehea_qp *qp = pr->qp;
2795
2796 /* Purge send queue */
2797 ehea_purge_sq(qp);
2798
2799 /* Disable queue pair */
2800 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2801 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2802 cb0);
2803 if (hret != H_SUCCESS) {
8c4877a4 2804 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2805 goto out;
2806 }
2807
2808 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2809 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2810
2811 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2812 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2813 1), cb0, &dummy64,
2814 &dummy64, &dummy16, &dummy16);
2815 if (hret != H_SUCCESS) {
8c4877a4 2816 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2817 goto out;
2818 }
2819
2820 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2821 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2822 cb0);
2823 if (hret != H_SUCCESS) {
8c4877a4 2824 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2825 goto out;
2826 }
2827
2828 /* deregister shared memory regions */
2829 dret = ehea_rem_smrs(pr);
2830 if (dret) {
8c4877a4 2831 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2832 goto out;
2833 }
2834 }
2835
2836 ret = 0;
2837out:
3faf2693 2838 free_page((unsigned long)cb0);
2c69448b
JBT		 2839
2840 return ret;
2841}
2842
508d2b5d 2843void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2844{
2845 struct ehea_qp qp = *orig_qp;
2846 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2847 struct ehea_rwqe *rwqe;
2848 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2849 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2850 struct sk_buff *skb;
2851 u32 lkey = pr->recv_mr.lkey;
2852
2853
2854 int i;
2855 int index;
2856
2857 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2858 rwqe = ehea_get_next_rwqe(&qp, 2);
2859 rwqe->sg_list[0].l_key = lkey;
2860 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2861 skb = skba_rq2[index];
2862 if (skb)
2863 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2864 }
2865
2866 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2867 rwqe = ehea_get_next_rwqe(&qp, 3);
2868 rwqe->sg_list[0].l_key = lkey;
2869 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2870 skb = skba_rq3[index];
2871 if (skb)
2872 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2873 }
2874}
2875
2876int ehea_restart_qps(struct net_device *dev)
2877{
2878 struct ehea_port *port = netdev_priv(dev);
2879 struct ehea_adapter *adapter = port->adapter;
2880 int ret = 0;
2881 int i;
2882
508d2b5d 2883 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2884 u64 hret;
2885 u64 dummy64 = 0;
2886 u16 dummy16 = 0;
2887
3faf2693 2888 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2889 if (!cb0) {
2890 ret = -ENOMEM;
2891 goto out;
2892 }
2893
2894 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2895 struct ehea_port_res *pr = &port->port_res[i];
2896 struct ehea_qp *qp = pr->qp;
2897
2898 ret = ehea_gen_smrs(pr);
2899 if (ret) {
8c4877a4 2900 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2901 goto out;
2902 }
2903
2904 ehea_update_rqs(qp, pr);
2905
2906 /* Enable queue pair */
2907 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2908 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2909 cb0);
2910 if (hret != H_SUCCESS) {
8c4877a4 2911 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2912 goto out;
2913 }
2914
2915 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2916 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2917
2918 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2919 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2920 1), cb0, &dummy64,
2921 &dummy64, &dummy16, &dummy16);
2922 if (hret != H_SUCCESS) {
8c4877a4 2923 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2924 goto out;
2925 }
2926
2927 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2928 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2929 cb0);
2930 if (hret != H_SUCCESS) {
8c4877a4 2931 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2932 goto out;
2933 }
2934
2935 /* refill entire queue */
2936 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2937 ehea_refill_rq2(pr, 0);
2938 ehea_refill_rq3(pr, 0);
2939 }
2940out:
3faf2693 2941 free_page((unsigned long)cb0);
2c69448b
JBT		 2942
2943 return ret;
2944}
2945
c4028958 2946static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2947{
2948 int ret;
c4028958
DH		 2949 struct ehea_port *port =
2950 container_of(work, struct ehea_port, reset_task);
2951 struct net_device *dev = port->netdev;
7a291083 2952
099473c1 2953 mutex_lock(&dlpar_mem_lock);
7a291083 2954 port->resets++;
a5af6ad3 2955 mutex_lock(&port->port_lock);
7a291083 2956 netif_stop_queue(dev);
bea3348e
SH		 2957
2958 port_napi_disable(port);
7a291083 2959
44c82152 2960 ehea_down(dev);
7a291083
JBT		 2961
2962 ret = ehea_up(dev);
44c82152 2963 if (ret)
7a291083 2964 goto out;
7a291083 2965
2c69448b
JBT		 2966 ehea_set_multicast_list(dev);
2967
8c4877a4 2968 netif_info(port, timer, dev, "reset successful\n");
7a291083 2969
bea3348e
SH		 2970 port_napi_enable(port);
2971
7a291083
JBT		 2972 netif_wake_queue(dev);
2973out:
a5af6ad3 2974 mutex_unlock(&port->port_lock);
099473c1 2975 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2976}
2977
3d6b892b 2978static void ehea_rereg_mrs(void)
44c82152
TK		 2979{
2980 int ret, i;
2981 struct ehea_adapter *adapter;
2982
8c4877a4 2983 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2984
2985 list_for_each_entry(adapter, &adapter_list, list)
2986 if (adapter->active_ports) {
2987 /* Shutdown all ports */
2988 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2989 struct ehea_port *port = adapter->port[i];
a5af6ad3 2990 struct net_device *dev;
44c82152 2991
a5af6ad3
DW		 2992 if (!port)
2993 continue;
44c82152 2994
a5af6ad3
DW		 2995 dev = port->netdev;
2996
2997 if (dev->flags & IFF_UP) {
2998 mutex_lock(&port->port_lock);
2999 netif_stop_queue(dev);
df39e8ba 3000 ehea_flush_sq(port);
a5af6ad3
DW		 3001 ret = ehea_stop_qps(dev);
3002 if (ret) {
3003 mutex_unlock(&port->port_lock);
3004 goto out;
44c82152 3005 }
a5af6ad3
DW		 3006 port_napi_disable(port);
3007 mutex_unlock(&port->port_lock);
44c82152 3008 }
2928db4c 3009 reset_sq_restart_flag(port);
44c82152
TK		 3010 }
3011
3012 /* Unregister old memory region */
3013 ret = ehea_rem_mr(&adapter->mr);
3014 if (ret) {
8c4877a4 3015 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 3016 goto out;
3017 }
3018 }
3019
44c82152
TK		 3020 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3021
3022 list_for_each_entry(adapter, &adapter_list, list)
3023 if (adapter->active_ports) {
3024 /* Register new memory region */
3025 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3026 if (ret) {
8c4877a4 3027 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 3028 goto out;
3029 }
3030
3031 /* Restart all ports */
3032 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3033 struct ehea_port *port = adapter->port[i];
3034
3035 if (port) {
3036 struct net_device *dev = port->netdev;
3037
3038 if (dev->flags & IFF_UP) {
a5af6ad3 3039 mutex_lock(&port->port_lock);
2c69448b 3040 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 3041 if (!ret) {
3042 check_sqs(port);
3043 port_napi_enable(port);
44c82152 3044 netif_wake_queue(dev);
6f4d6dc1
BL		 3045 } else {
3046 netdev_err(dev, "Unable to restart QPS\n");
3047 }
a5af6ad3 3048 mutex_unlock(&port->port_lock);
44c82152
TK		 3049 }
3050 }
3051 }
3052 }
8c4877a4 3053 pr_info("re-initializing driver complete\n");
44c82152
TK		 3054out:
3055 return;
3056}
3057
7a291083
JBT		 3058static void ehea_tx_watchdog(struct net_device *dev)
3059{
3060 struct ehea_port *port = netdev_priv(dev);
3061
2c69448b
JBT		 3062 if (netif_carrier_ok(dev) &&
3063 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3064 ehea_schedule_port_reset(port);
7a291083
JBT		 3065}
3066
3067int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3068{
3069 struct hcp_query_ehea *cb;
3070 u64 hret;
3071 int ret;
3072
3faf2693 3073 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3074 if (!cb) {
3075 ret = -ENOMEM;
3076 goto out;
3077 }
3078
3079 hret = ehea_h_query_ehea(adapter->handle, cb);
3080
3081 if (hret != H_SUCCESS) {
3082 ret = -EIO;
3083 goto out_herr;
3084 }
3085
7a291083
JBT		 3086 adapter->max_mc_mac = cb->max_mc_mac - 1;
3087 ret = 0;
3088
3089out_herr:
3faf2693 3090 free_page((unsigned long)cb);
7a291083
JBT		 3091out:
3092 return ret;
3093}
3094
1acf2318 3095int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3096{
7a291083 3097 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3098 u64 hret;
3099 int ret = 0;
7a291083 3100
1acf2318 3101 *jumbo = 0;
7a291083 3102
1acf2318 3103 /* (Try to) enable *jumbo frames */
3faf2693 3104 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 3105 if (!cb4) {
8c4877a4 3106 pr_err("no mem for cb4\n");
1acf2318
JBT		 3107 ret = -ENOMEM;
3108 goto out;
7a291083 3109 } else {
1acf2318 3110 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3111 port->logical_port_id,
3112 H_PORT_CB4,
3113 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3114 if (hret == H_SUCCESS) {
3115 if (cb4->jumbo_frame)
1acf2318 3116 *jumbo = 1;
9c750b7d
TK		 3117 else {
3118 cb4->jumbo_frame = 1;
1acf2318
JBT		 3119 hret = ehea_h_modify_ehea_port(port->adapter->
3120 handle,
9c750b7d 3121 port->
1acf2318 3122 logical_port_id,
9c750b7d
TK		 3123 H_PORT_CB4,
3124 H_PORT_CB4_JUMBO,
3125 cb4);
3126 if (hret == H_SUCCESS)
1acf2318 3127 *jumbo = 1;
9c750b7d 3128 }
1acf2318
JBT		 3129 } else
3130 ret = -EINVAL;
3131
3faf2693 3132 free_page((unsigned long)cb4);
7a291083 3133 }
1acf2318
JBT		 3134out:
3135 return ret;
3136}
3137
3138static ssize_t ehea_show_port_id(struct device *dev,
3139 struct device_attribute *attr, char *buf)
3140{
3141 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3142 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3143}
3144
3145static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3146 NULL);
3147
3148static void __devinit logical_port_release(struct device *dev)
3149{
3150 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3151 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3152}
3153
3154static struct device *ehea_register_port(struct ehea_port *port,
3155 struct device_node *dn)
3156{
3157 int ret;
3158
61c7a080 3159 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3160 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3161 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3162
db1d7bf7 3163 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3164 port->ofdev.dev.release = logical_port_release;
3165
3166 ret = of_device_register(&port->ofdev);
3167 if (ret) {
8c4877a4 3168 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 3169 goto out;
3170 }
3171
3172 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3173 if (ret) {
8c4877a4 3174 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 3175 goto out_unreg_of_dev;
3176 }
e542aa6b 3177
1acf2318
JBT		 3178 return &port->ofdev.dev;
3179
3180out_unreg_of_dev:
3181 of_device_unregister(&port->ofdev);
3182out:
3183 return NULL;
3184}
3185
3186static void ehea_unregister_port(struct ehea_port *port)
3187{
3188 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3189 of_device_unregister(&port->ofdev);
3190}
3191
086c1b2c
TK		 3192static const struct net_device_ops ehea_netdev_ops = {
3193 .ndo_open = ehea_open,
3194 .ndo_stop = ehea_stop,
3195 .ndo_start_xmit = ehea_start_xmit,
3196#ifdef CONFIG_NET_POLL_CONTROLLER
3197 .ndo_poll_controller = ehea_netpoll,
3198#endif
3199 .ndo_get_stats = ehea_get_stats,
3200 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3201 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3202 .ndo_set_multicast_list = ehea_set_multicast_list,
3203 .ndo_change_mtu = ehea_change_mtu,
3204 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3205 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3206 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3207 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3208};
3209
1acf2318
JBT		 3210struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3211 u32 logical_port_id,
3212 struct device_node *dn)
3213{
3214 int ret;
3215 struct net_device *dev;
3216 struct ehea_port *port;
3217 struct device *port_dev;
3218 int jumbo;
3219
3220 /* allocate memory for the port structures */
3221 dev = alloc_etherdev(sizeof(struct ehea_port));
3222
3223 if (!dev) {
8c4877a4 3224 pr_err("no mem for net_device\n");
1acf2318
JBT		 3225 ret = -ENOMEM;
3226 goto out_err;
3227 }
3228
3229 port = netdev_priv(dev);
3230
a5af6ad3 3231 mutex_init(&port->port_lock);
1acf2318
JBT		 3232 port->state = EHEA_PORT_DOWN;
3233 port->sig_comp_iv = sq_entries / 10;
3234
3235 port->adapter = adapter;
3236 port->netdev = dev;
3237 port->logical_port_id = logical_port_id;
3238
3239 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3240
3241 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3242 if (!port->mc_list) {
3243 ret = -ENOMEM;
3244 goto out_free_ethdev;
3245 }
3246
3247 INIT_LIST_HEAD(&port->mc_list->list);
3248
3249 ret = ehea_sense_port_attr(port);
3250 if (ret)
3251 goto out_free_mc_list;
3252
3253 port_dev = ehea_register_port(port, dn);
3254 if (!port_dev)
3255 goto out_free_mc_list;
3256
3257 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3258
3259 /* initialize net_device structure */
7a291083
JBT		 3260 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3261
086c1b2c
TK		 3262 dev->netdev_ops = &ehea_netdev_ops;
3263 ehea_set_ethtool_ops(dev);
3264
7a291083 3265 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3266 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3267 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3268 | NETIF_F_LLTX;
7a291083
JBT		 3269 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3270
c7757fdb
BL		 3271 if (use_lro)
3272 dev->features |= NETIF_F_LRO;
3273
c4028958 3274 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083 3275
21ccc793
AB		 3276 init_waitqueue_head(&port->swqe_avail_wq);
3277 init_waitqueue_head(&port->restart_wq);
3278
7a291083
JBT		 3279 ret = register_netdev(dev);
3280 if (ret) {
8c4877a4 3281 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3282 goto out_unreg_port;
7a291083
JBT		 3283 }
3284
d4dc4ec9
JBT		 3285 port->lro_max_aggr = lro_max_aggr;
3286
1acf2318 3287 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3288 if (ret)
8c4877a4 3289 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3290
8c4877a4
JP		 3291 netdev_info(dev, "Jumbo frames are %sabled\n",
3292 jumbo == 1 ? "en" : "dis");
9c750b7d 3293
44c82152
TK		 3294 adapter->active_ports++;
3295
1acf2318 3296 return port;
7a291083 3297
1acf2318
JBT		 3298out_unreg_port:
3299 ehea_unregister_port(port);
3300
3301out_free_mc_list:
7a291083 3302 kfree(port->mc_list);
1acf2318
JBT		 3303
3304out_free_ethdev:
3305 free_netdev(dev);
3306
3307out_err:
8c4877a4
JP		 3308 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3309 logical_port_id, ret);
1acf2318
JBT		 3310 return NULL;
3311}
3312
3313static void ehea_shutdown_single_port(struct ehea_port *port)
3314{
7fb1c2ac 3315 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3316
3317 cancel_work_sync(&port->reset_task);
1acf2318
JBT		 3318 unregister_netdev(port->netdev);
3319 ehea_unregister_port(port);
3320 kfree(port->mc_list);
3321 free_netdev(port->netdev);
7fb1c2ac 3322 adapter->active_ports--;
7a291083
JBT		 3323}
3324
3325static int ehea_setup_ports(struct ehea_adapter *adapter)
3326{
1acf2318
JBT		 3327 struct device_node *lhea_dn;
3328 struct device_node *eth_dn = NULL;
d1d25aab 3329
9f9a3b8a 3330 const u32 *dn_log_port_id;
1acf2318
JBT		 3331 int i = 0;
3332
61c7a080 3333 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3334 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3335
40cd3a45 3336 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3337 NULL);
1acf2318 3338 if (!dn_log_port_id) {
8c4877a4
JP		 3339 pr_err("bad device node: eth_dn name=%s\n",
3340 eth_dn->full_name);
1acf2318
JBT		 3341 continue;
3342 }
7a291083 3343
1211bb6d 3344 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3345 pr_err("creating MR failed\n");
1211bb6d
TK		 3346 of_node_put(eth_dn);
3347 return -EIO;
3348 }
3349
1acf2318
JBT		 3350 adapter->port[i] = ehea_setup_single_port(adapter,
3351 *dn_log_port_id,
3352 eth_dn);
7a291083 3353 if (adapter->port[i])
8c4877a4
JP		 3354 netdev_info(adapter->port[i]->netdev,
3355 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3356 else
3357 ehea_remove_adapter_mr(adapter);
3358
1acf2318 3359 i++;
ee289b64 3360 }
1211bb6d 3361 return 0;
1acf2318
JBT		 3362}
3363
e542aa6b
JBT		 3364static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3365 u32 logical_port_id)
1acf2318
JBT		 3366{
3367 struct device_node *lhea_dn;
3368 struct device_node *eth_dn = NULL;
9f9a3b8a 3369 const u32 *dn_log_port_id;
1acf2318 3370
61c7a080 3371 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3372 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3373
40cd3a45 3374 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3375 NULL);
1acf2318
JBT		 3376 if (dn_log_port_id)
3377 if (*dn_log_port_id == logical_port_id)
3378 return eth_dn;
ee289b64 3379 }
1acf2318
JBT		 3380
3381 return NULL;
3382}
3383
3384static ssize_t ehea_probe_port(struct device *dev,
3385 struct device_attribute *attr,
3386 const char *buf, size_t count)
3387{
c7ae011d 3388 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3389 struct ehea_port *port;
3390 struct device_node *eth_dn = NULL;
3391 int i;
3392
3393 u32 logical_port_id;
3394
a8e34fda 3395 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3396
3397 port = ehea_get_port(adapter, logical_port_id);
3398
3399 if (port) {
8c4877a4
JP		 3400 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3401 logical_port_id);
1acf2318 3402 return -EINVAL;
7a291083 3403 }
e542aa6b 3404
1acf2318 3405 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3406
1acf2318 3407 if (!eth_dn) {
8c4877a4 3408 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3409 return -EINVAL;
3410 }
e542aa6b 3411
1211bb6d 3412 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3413 pr_err("creating MR failed\n");
1211bb6d
TK		 3414 return -EIO;
3415 }
3416
1acf2318 3417 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3418
1eef4e04
JBT		 3419 of_node_put(eth_dn);
3420
1acf2318 3421 if (port) {
508d2b5d 3422 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3423 if (!adapter->port[i]) {
3424 adapter->port[i] = port;
3425 break;
3426 }
7a291083 3427
8c4877a4
JP		 3428 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3429 logical_port_id);
1211bb6d
TK		 3430 } else {
3431 ehea_remove_adapter_mr(adapter);
e542aa6b 3432 return -EIO;
1211bb6d 3433 }
7a291083 3434
1acf2318
JBT		 3435 return (ssize_t) count;
3436}
3437
3438static ssize_t ehea_remove_port(struct device *dev,
3439 struct device_attribute *attr,
3440 const char *buf, size_t count)
3441{
c7ae011d 3442 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3443 struct ehea_port *port;
3444 int i;
3445 u32 logical_port_id;
3446
a8e34fda 3447 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3448
3449 port = ehea_get_port(adapter, logical_port_id);
3450
3451 if (port) {
8c4877a4
JP		 3452 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3453 logical_port_id);
1acf2318
JBT		 3454
3455 ehea_shutdown_single_port(port);
3456
508d2b5d 3457 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3458 if (adapter->port[i] == port) {
3459 adapter->port[i] = NULL;
3460 break;
3461 }
3462 } else {
8c4877a4
JP		 3463 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3464 logical_port_id);
1acf2318
JBT		 3465 return -EINVAL;
3466 }
3467
1211bb6d
TK		 3468 ehea_remove_adapter_mr(adapter);
3469
1acf2318
JBT		 3470 return (ssize_t) count;
3471}
3472
3473static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3474static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3475
2dc11581 3476int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3477{
6b08f3ae 3478 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3479 if (ret)
3480 goto out;
3481
6b08f3ae 3482 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3483out:
7a291083
JBT		 3484 return ret;
3485}
3486
2dc11581 3487void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3488{
6b08f3ae
JF		 3489 device_remove_file(&dev->dev, &dev_attr_probe_port);
3490 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3491}
3492
2dc11581 3493static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3494 const struct of_device_id *id)
7a291083
JBT		 3495{
3496 struct ehea_adapter *adapter;
9f9a3b8a 3497 const u64 *adapter_handle;
7a291083
JBT		 3498 int ret;
3499
61c7a080 3500 if (!dev || !dev->dev.of_node) {
8c4877a4 3501 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3502 return -EINVAL;
3503 }
3504
7a291083
JBT		 3505 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3506 if (!adapter) {
3507 ret = -ENOMEM;
6b08f3ae 3508 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3509 goto out;
3510 }
3511
44c82152
TK		 3512 list_add(&adapter->list, &adapter_list);
3513
6b08f3ae 3514 adapter->ofdev = dev;
1acf2318 3515
61c7a080 3516 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3517 NULL);
061bf3cd
TK		 3518 if (adapter_handle)
3519 adapter->handle = *adapter_handle;
3520
3521 if (!adapter->handle) {
6b08f3ae 3522 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3523 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3524 ret = -ENODEV;
3525 goto out_free_ad;
3526 }
3527
7a291083
JBT		 3528 adapter->pd = EHEA_PD_ID;
3529
c7ae011d 3530 dev_set_drvdata(&dev->dev, adapter);
7a291083 3531
7a291083
JBT		 3532
3533 /* initialize adapter and ports */
3534 /* get adapter properties */
3535 ret = ehea_sense_adapter_attr(adapter);
3536 if (ret) {
898eb71c 3537 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3538 goto out_free_ad;
7a291083 3539 }
7a291083
JBT		 3540
3541 adapter->neq = ehea_create_eq(adapter,
3542 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3543 if (!adapter->neq) {
1eef4e04 3544 ret = -EIO;
898eb71c 3545 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3546 goto out_free_ad;
7a291083
JBT		 3547 }
3548
3549 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3550 (unsigned long)adapter);
3551
6b08f3ae 3552 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3553 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3554 "ehea_neq", adapter);
3555 if (ret) {
898eb71c 3556 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3557 goto out_kill_eq;
3558 }
3559
1eef4e04
JBT		 3560 ret = ehea_create_device_sysfs(dev);
3561 if (ret)
3bf76b81 3562 goto out_free_irq;
1acf2318 3563
7a291083
JBT		 3564 ret = ehea_setup_ports(adapter);
3565 if (ret) {
898eb71c 3566 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3567 goto out_rem_dev_sysfs;
7a291083
JBT		 3568 }
3569
3570 ret = 0;
3571 goto out;
3572
1acf2318
JBT		 3573out_rem_dev_sysfs:
3574 ehea_remove_device_sysfs(dev);
3575
7a291083 3576out_free_irq:
6b08f3ae 3577 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3578
3579out_kill_eq:
3580 ehea_destroy_eq(adapter->neq);
3581
7a291083 3582out_free_ad:
51621fbd 3583 list_del(&adapter->list);
7a291083 3584 kfree(adapter);
21eee2dd 3585
7a291083 3586out:
21eee2dd 3587 ehea_update_firmware_handles();
52e21b1b 3588
7a291083
JBT		 3589 return ret;
3590}
3591
2dc11581 3592static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3593{
c7ae011d 3594 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3595 int i;
3596
1acf2318 3597 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3598 if (adapter->port[i]) {
3599 ehea_shutdown_single_port(adapter->port[i]);
3600 adapter->port[i] = NULL;
3601 }
1acf2318
JBT		 3602
3603 ehea_remove_device_sysfs(dev);
3604
6b08f3ae 3605 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3606 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3607
3608 ehea_destroy_eq(adapter->neq);
1211bb6d 3609 ehea_remove_adapter_mr(adapter);
44c82152 3610 list_del(&adapter->list);
7a291083 3611 kfree(adapter);
44c82152 3612
21eee2dd 3613 ehea_update_firmware_handles();
21eee2dd 3614
7a291083
JBT		 3615 return 0;
3616}
3617
21eee2dd
TK		 3618void ehea_crash_handler(void)
3619{
3620 int i;
3621
3622 if (ehea_fw_handles.arr)
3623 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3624 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3625 ehea_fw_handles.arr[i].fwh,
3626 FORCE_FREE);
3627
3628 if (ehea_bcmc_regs.arr)
3629 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3630 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3631 ehea_bcmc_regs.arr[i].port_id,
3632 ehea_bcmc_regs.arr[i].reg_type,
3633 ehea_bcmc_regs.arr[i].macaddr,
3634 0, H_DEREG_BCMC);
3635}
3636
48cfb14f
HH		 3637static int ehea_mem_notifier(struct notifier_block *nb,
3638 unsigned long action, void *data)
3639{
a7c561f2 3640 int ret = NOTIFY_BAD;
d4f12daf 3641 struct memory_notify *arg = data;
a7c561f2 3642
099473c1 3643 mutex_lock(&dlpar_mem_lock);
a7c561f2 3644
48cfb14f 3645 switch (action) {
d4f12daf 3646 case MEM_CANCEL_OFFLINE:
8c4877a4 3647 pr_info("memory offlining canceled");
d4f12daf
HH		 3648 /* Readd canceled memory block */
3649 case MEM_ONLINE:
8c4877a4 3650 pr_info("memory is going online");
3876732c 3651 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3652 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3653 goto out_unlock;
3d6b892b 3654 ehea_rereg_mrs();
d4f12daf
HH		 3655 break;
3656 case MEM_GOING_OFFLINE:
8c4877a4 3657 pr_info("memory is going offline");
3876732c 3658 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3659 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3660 goto out_unlock;
3d6b892b 3661 ehea_rereg_mrs();
48cfb14f
HH		 3662 break;
3663 default:
3664 break;
3665 }
52e21b1b
JBT		 3666
3667 ehea_update_firmware_handles();
a7c561f2 3668 ret = NOTIFY_OK;
52e21b1b 3669
a7c561f2
TK		 3670out_unlock:
3671 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3672 return ret;
48cfb14f
HH		 3673}
3674
3675static struct notifier_block ehea_mem_nb = {
3676 .notifier_call = ehea_mem_notifier,
3677};
3678
2a6f4e49
JBT		 3679static int ehea_reboot_notifier(struct notifier_block *nb,
3680 unsigned long action, void *unused)
3681{
3682 if (action == SYS_RESTART) {
8c4877a4 3683 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3684 ibmebus_unregister_driver(&ehea_driver);
3685 }
3686 return NOTIFY_DONE;
3687}
3688
3689static struct notifier_block ehea_reboot_nb = {
508d2b5d 3690 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3691};
3692
7a291083
JBT		 3693static int check_module_parm(void)
3694{
3695 int ret = 0;
3696
3697 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3698 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3699 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3700 ret = -EINVAL;
3701 }
3702 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3703 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3704 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3705 ret = -EINVAL;
3706 }
3707 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3708 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3709 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3710 ret = -EINVAL;
3711 }
3712 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3713 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3714 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3715 ret = -EINVAL;
3716 }
3717
3718 return ret;
3719}
3720
4c3ca4da
JBT		 3721static ssize_t ehea_show_capabilities(struct device_driver *drv,
3722 char *buf)
3723{
3724 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3725}
3726
3727static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3728 ehea_show_capabilities, NULL);
3729
7a291083
JBT		 3730int __init ehea_module_init(void)
3731{
3732 int ret;
3733
8c4877a4 3734 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3735
21eee2dd
TK		 3736 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3737 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3738
9f71a568 3739 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3740 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3741
7a291083
JBT		 3742 ret = check_module_parm();
3743 if (ret)
3744 goto out;
44c82152
TK		 3745
3746 ret = ehea_create_busmap();
3747 if (ret)
3748 goto out;
3749
21eee2dd
TK		 3750 ret = register_reboot_notifier(&ehea_reboot_nb);
3751 if (ret)
8c4877a4 3752 pr_info("failed registering reboot notifier\n");
21eee2dd 3753
48cfb14f
HH		 3754 ret = register_memory_notifier(&ehea_mem_nb);
3755 if (ret)
8c4877a4 3756 pr_info("failed registering memory remove notifier\n");
48cfb14f 3757
c061b18d 3758 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3759 if (ret)
8c4877a4 3760 pr_info("failed registering crash handler\n");
2a6f4e49 3761
7a291083 3762 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3763 if (ret) {
8c4877a4 3764 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3765 goto out2;
4c3ca4da
JBT		 3766 }
3767
3768 ret = driver_create_file(&ehea_driver.driver,
3769 &driver_attr_capabilities);
3770 if (ret) {
8c4877a4
JP		 3771 pr_err("failed to register capabilities attribute, ret=%d\n",
3772 ret);
21eee2dd 3773 goto out3;
4c3ca4da 3774 }
7a291083 3775
21eee2dd
TK		 3776 return ret;
3777
3778out3:
3779 ibmebus_unregister_driver(&ehea_driver);
3780out2:
48cfb14f 3781 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3782 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3783 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3784out:
3785 return ret;
3786}
3787
3788static void __exit ehea_module_exit(void)
3789{
21eee2dd
TK		 3790 int ret;
3791
4c3ca4da 3792 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3793 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3794 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3795 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3796 if (ret)
8c4877a4 3797 pr_info("failed unregistering crash handler\n");
48cfb14f 3798 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3799 kfree(ehea_fw_handles.arr);
3800 kfree(ehea_bcmc_regs.arr);
44c82152 3801 ehea_destroy_busmap();
7a291083
JBT		 3802}
3803
3804module_init(ehea_module_init);
3805module_exit(ehea_module_exit);
kernel source for telekom puls (alcatel/mediatek)