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[mirror_ubuntu-artful-kernel.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 */
5c7e57f7 440 ehea_update_rq1a(pr->qp, i);
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)) {
8c4877a4
JP		 743 netif_err(port, rx_err, dev,
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) {
8c4877a4 749 netdev_info(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
e2878806
TK		 1332 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1333 - init_attr->act_nr_rwqes_rq2
1334 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1335
e2878806 1336 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1337
1338 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1339
1340 return ret;
1341}
1342
1343static int ehea_reg_interrupts(struct net_device *dev)
1344{
1345 struct ehea_port *port = netdev_priv(dev);
1346 struct ehea_port_res *pr;
1347 int i, ret;
1348
7a291083
JBT		 1349
1350 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1351 dev->name);
1352
6b08f3ae 1353 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1354 ehea_qp_aff_irq_handler,
38515e90 1355 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1356 if (ret) {
8c4877a4
JP		 1357 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1358 port->qp_eq->attr.ist1);
7a291083
JBT		 1359 goto out_free_qpeq;
1360 }
1361
8c4877a4
JP		 1362 netif_info(port, ifup, dev,
1363 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1364 port->qp_eq->attr.ist1);
7a291083 1365
18604c54 1366
7a291083
JBT		 1367 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1368 pr = &port->port_res[i];
1369 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1370 "%s-queue%d", dev->name, i);
6b08f3ae 1371 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1372 ehea_recv_irq_handler,
38515e90 1373 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1374 pr);
1375 if (ret) {
8c4877a4
JP		 1376 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1377 i, pr->eq->attr.ist1);
7a291083
JBT		 1378 goto out_free_req;
1379 }
8c4877a4
JP		 1380 netif_info(port, ifup, dev,
1381 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1382 pr->eq->attr.ist1, i);
7a291083
JBT		 1383 }
1384out:
1385 return ret;
1386
18604c54 1387
7a291083
JBT		 1388out_free_req:
1389 while (--i >= 0) {
18604c54 1390 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1391 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1392 }
18604c54 1393
7a291083 1394out_free_qpeq:
6b08f3ae 1395 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1396 i = port->num_def_qps;
18604c54 1397
7a291083 1398 goto out;
18604c54 1399
7a291083
JBT		 1400}
1401
1402static void ehea_free_interrupts(struct net_device *dev)
1403{
1404 struct ehea_port *port = netdev_priv(dev);
1405 struct ehea_port_res *pr;
1406 int i;
1407
1408 /* send */
18604c54 1409
7a291083
JBT		 1410 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1411 pr = &port->port_res[i];
6b08f3ae 1412 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1413 netif_info(port, intr, dev,
1414 "free send irq for res %d with handle 0x%X\n",
1415 i, pr->eq->attr.ist1);
7a291083
JBT		 1416 }
1417
1418 /* associated events */
6b08f3ae 1419 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1420 netif_info(port, intr, dev,
1421 "associated event interrupt for handle 0x%X freed\n",
1422 port->qp_eq->attr.ist1);
7a291083
JBT		 1423}
1424
1425static int ehea_configure_port(struct ehea_port *port)
1426{
1427 int ret, i;
1428 u64 hret, mask;
1429 struct hcp_ehea_port_cb0 *cb0;
1430
1431 ret = -ENOMEM;
3faf2693 1432 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1433 if (!cb0)
1434 goto out;
1435
1436 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1437 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1438 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1439 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1440 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1441 PXLY_RC_VLAN_FILTER)
1442 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1443
18604c54
JBT		 1444 for (i = 0; i < port->num_mcs; i++)
1445 if (use_mcs)
1446 cb0->default_qpn_arr[i] =
1447 port->port_res[i].qp->init_attr.qp_nr;
1448 else
1449 cb0->default_qpn_arr[i] =
1450 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1451
7a291083
JBT		 1452 if (netif_msg_ifup(port))
1453 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1454
1455 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1456 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1457
1458 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1459 port->logical_port_id,
1460 H_PORT_CB0, mask, cb0);
1461 ret = -EIO;
1462 if (hret != H_SUCCESS)
1463 goto out_free;
1464
1465 ret = 0;
1466
1467out_free:
3faf2693 1468 free_page((unsigned long)cb0);
7a291083
JBT		 1469out:
1470 return ret;
1471}
1472
e542aa6b 1473int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1474{
e542aa6b 1475 int ret;
7a291083
JBT		 1476 struct ehea_adapter *adapter = pr->port->adapter;
1477
e542aa6b
JBT		 1478 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1479 if (ret)
7a291083
JBT		 1480 goto out;
1481
e542aa6b
JBT		 1482 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1483 if (ret)
1484 goto out_free;
7a291083
JBT		 1485
1486 return 0;
1487
e542aa6b
JBT		 1488out_free:
1489 ehea_rem_mr(&pr->send_mr);
7a291083 1490out:
8c4877a4 1491 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1492 return -EIO;
1493}
1494
e542aa6b 1495int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1496{
8e95a202
JP		 1497 if ((ehea_rem_mr(&pr->send_mr)) ||
1498 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1499 return -EIO;
1500 else
1501 return 0;
7a291083
JBT		 1502}
1503
1504static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1505{
508d2b5d 1506 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1507
89bf67f1 1508 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1509 if (!q_skba->arr)
1510 return -ENOMEM;
1511
7a291083
JBT		 1512 q_skba->len = max_q_entries;
1513 q_skba->index = 0;
1514 q_skba->os_skbs = 0;
1515
1516 return 0;
1517}
1518
1519static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1520 struct port_res_cfg *pr_cfg, int queue_token)
1521{
1522 struct ehea_adapter *adapter = port->adapter;
1523 enum ehea_eq_type eq_type = EHEA_EQ;
1524 struct ehea_qp_init_attr *init_attr = NULL;
1525 int ret = -EIO;
ce45b873
BL		 1526 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1527
1528 tx_bytes = pr->tx_bytes;
1529 tx_packets = pr->tx_packets;
1530 rx_bytes = pr->rx_bytes;
1531 rx_packets = pr->rx_packets;
7a291083
JBT		 1532
1533 memset(pr, 0, sizeof(struct ehea_port_res));
1534
ce45b873
BL		 1535 pr->tx_bytes = rx_bytes;
1536 pr->tx_packets = tx_packets;
1537 pr->rx_bytes = rx_bytes;
1538 pr->rx_packets = rx_packets;
1539
7a291083 1540 pr->port = port;
7a291083
JBT		 1541 spin_lock_init(&pr->xmit_lock);
1542 spin_lock_init(&pr->netif_queue);
1543
18604c54
JBT		 1544 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1545 if (!pr->eq) {
8c4877a4 1546 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1547 goto out_free;
1548 }
1549
1550 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1551 pr->eq->fw_handle,
7a291083
JBT		 1552 port->logical_port_id);
1553 if (!pr->recv_cq) {
8c4877a4 1554 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1555 goto out_free;
1556 }
1557
1558 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1559 pr->eq->fw_handle,
7a291083
JBT		 1560 port->logical_port_id);
1561 if (!pr->send_cq) {
8c4877a4 1562 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1563 goto out_free;
1564 }
1565
1566 if (netif_msg_ifup(port))
8c4877a4
JP		 1567 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1568 pr->send_cq->attr.act_nr_of_cqes,
1569 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1570
1571 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1572 if (!init_attr) {
1573 ret = -ENOMEM;
8c4877a4 1574 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1575 goto out_free;
1576 }
1577
1578 init_attr->low_lat_rq1 = 1;
1579 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1580 init_attr->rq_count = 3;
1581 init_attr->qp_token = queue_token;
1582 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1583 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1584 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1585 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1586 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1587 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1588 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1589 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1590 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1591 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1592 init_attr->port_nr = port->logical_port_id;
1593 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1594 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1595 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1596
1597 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1598 if (!pr->qp) {
8c4877a4 1599 pr_err("create_qp failed\n");
7a291083
JBT		 1600 ret = -EIO;
1601 goto out_free;
1602 }
1603
1604 if (netif_msg_ifup(port))
8c4877a4
JP		 1605 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1606 init_attr->qp_nr,
1607 init_attr->act_nr_send_wqes,
1608 init_attr->act_nr_rwqes_rq1,
1609 init_attr->act_nr_rwqes_rq2,
1610 init_attr->act_nr_rwqes_rq3);
7a291083 1611
44fb3126
TK		 1612 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1613
1614 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1615 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1616 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1617 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1618 if (ret)
1619 goto out_free;
1620
1621 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1622 if (ehea_gen_smrs(pr) != 0) {
1623 ret = -EIO;
1624 goto out_free;
1625 }
18604c54 1626
7a291083
JBT		 1627 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1628
1629 kfree(init_attr);
18604c54 1630
bea3348e 1631 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1632
d4dc4ec9
JBT		 1633 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1634 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1635 pr->lro_mgr.lro_arr = pr->lro_desc;
1636 pr->lro_mgr.get_skb_header = get_skb_hdr;
1637 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1638 pr->lro_mgr.dev = port->netdev;
1639 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1640 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1641
7a291083
JBT		 1642 ret = 0;
1643 goto out;
1644
1645out_free:
1646 kfree(init_attr);
1647 vfree(pr->sq_skba.arr);
1648 vfree(pr->rq1_skba.arr);
1649 vfree(pr->rq2_skba.arr);
1650 vfree(pr->rq3_skba.arr);
1651 ehea_destroy_qp(pr->qp);
1652 ehea_destroy_cq(pr->send_cq);
1653 ehea_destroy_cq(pr->recv_cq);
18604c54 1654 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1655out:
1656 return ret;
1657}
1658
1659static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1660{
1661 int ret, i;
1662
357eb46d
HH		 1663 if (pr->qp)
1664 netif_napi_del(&pr->napi);
1665
7a291083
JBT		 1666 ret = ehea_destroy_qp(pr->qp);
1667
1668 if (!ret) {
1669 ehea_destroy_cq(pr->send_cq);
1670 ehea_destroy_cq(pr->recv_cq);
18604c54 1671 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1672
1673 for (i = 0; i < pr->rq1_skba.len; i++)
1674 if (pr->rq1_skba.arr[i])
1675 dev_kfree_skb(pr->rq1_skba.arr[i]);
1676
1677 for (i = 0; i < pr->rq2_skba.len; i++)
1678 if (pr->rq2_skba.arr[i])
1679 dev_kfree_skb(pr->rq2_skba.arr[i]);
1680
1681 for (i = 0; i < pr->rq3_skba.len; i++)
1682 if (pr->rq3_skba.arr[i])
1683 dev_kfree_skb(pr->rq3_skba.arr[i]);
1684
1685 for (i = 0; i < pr->sq_skba.len; i++)
1686 if (pr->sq_skba.arr[i])
1687 dev_kfree_skb(pr->sq_skba.arr[i]);
1688
1689 vfree(pr->rq1_skba.arr);
1690 vfree(pr->rq2_skba.arr);
1691 vfree(pr->rq3_skba.arr);
1692 vfree(pr->sq_skba.arr);
1693 ret = ehea_rem_smrs(pr);
1694 }
1695 return ret;
1696}
1697
1698/*
1699 * The write_* functions store information in swqe which is used by
1700 * the hardware to calculate the ip/tcp/udp checksum
1701 */
1702
1703static inline void write_ip_start_end(struct ehea_swqe *swqe,
1704 const struct sk_buff *skb)
1705{
eddc9ec5 1706 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1707 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1708}
1709
1710static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1711 const struct sk_buff *skb)
1712{
1713 swqe->tcp_offset =
1714 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1715
1716 swqe->tcp_end = (u16)skb->len - 1;
1717}
1718
1719static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1720 const struct sk_buff *skb)
1721{
1722 swqe->tcp_offset =
1723 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1724
1725 swqe->tcp_end = (u16)skb->len - 1;
1726}
1727
1728
1729static void write_swqe2_TSO(struct sk_buff *skb,
1730 struct ehea_swqe *swqe, u32 lkey)
1731{
1732 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1733 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1734 int skb_data_size = skb_headlen(skb);
7a291083 1735 int headersize;
7a291083
JBT		 1736
1737 /* Packet is TCP with TSO enabled */
1738 swqe->tx_control |= EHEA_SWQE_TSO;
1739 swqe->mss = skb_shinfo(skb)->gso_size;
1740 /* copy only eth/ip/tcp headers to immediate data and
1741 * the rest of skb->data to sg1entry
1742 */
ab6a5bb6 1743 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1744
e743d313 1745 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1746
1747 if (skb_data_size >= headersize) {
1748 /* copy immediate data */
d626f62b 1749 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1750 swqe->immediate_data_length = headersize;
1751
1752 if (skb_data_size > headersize) {
1753 /* set sg1entry data */
1754 sg1entry->l_key = lkey;
1755 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1756 sg1entry->vaddr =
1757 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1758 swqe->descriptors++;
1759 }
1760 } else
8c4877a4 1761 pr_err("cannot handle fragmented headers\n");
7a291083
JBT		 1762}
1763
1764static void write_swqe2_nonTSO(struct sk_buff *skb,
1765 struct ehea_swqe *swqe, u32 lkey)
1766{
e743d313 1767 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1768 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1769 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1770
1771 /* Packet is any nonTSO type
1772 *
1773 * Copy as much as possible skb->data to immediate data and
1774 * the rest to sg1entry
1775 */
1776 if (skb_data_size >= SWQE2_MAX_IMM) {
1777 /* copy immediate data */
d626f62b 1778 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1779
1780 swqe->immediate_data_length = SWQE2_MAX_IMM;
1781
1782 if (skb_data_size > SWQE2_MAX_IMM) {
1783 /* copy sg1entry data */
1784 sg1entry->l_key = lkey;
1785 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1786 sg1entry->vaddr =
1787 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1788 swqe->descriptors++;
1789 }
1790 } else {
d626f62b 1791 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1792 swqe->immediate_data_length = skb_data_size;
1793 }
1794}
1795
1796static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1797 struct ehea_swqe *swqe, u32 lkey)
1798{
1799 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1800 skb_frag_t *frag;
1801 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1802
1803 nfrags = skb_shinfo(skb)->nr_frags;
1804 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1805 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1806 swqe->descriptors = 0;
1807 sg1entry_contains_frag_data = 0;
1808
1809 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1810 write_swqe2_TSO(skb, swqe, lkey);
1811 else
1812 write_swqe2_nonTSO(skb, swqe, lkey);
1813
1814 /* write descriptors */
1815 if (nfrags > 0) {
1816 if (swqe->descriptors == 0) {
1817 /* sg1entry not yet used */
1818 frag = &skb_shinfo(skb)->frags[0];
1819
1820 /* copy sg1entry data */
1821 sg1entry->l_key = lkey;
1822 sg1entry->len = frag->size;
44a5b3d5
TK		 1823 sg1entry->vaddr =
1824 ehea_map_vaddr(page_address(frag->page)
1825 + frag->page_offset);
7a291083
JBT		 1826 swqe->descriptors++;
1827 sg1entry_contains_frag_data = 1;
1828 }
1829
1830 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1831
1832 frag = &skb_shinfo(skb)->frags[i];
1833 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1834
1835 sgentry->l_key = lkey;
1836 sgentry->len = frag->size;
44a5b3d5
TK		 1837 sgentry->vaddr =
1838 ehea_map_vaddr(page_address(frag->page)
1839 + frag->page_offset);
7a291083
JBT		 1840 swqe->descriptors++;
1841 }
1842 }
1843}
1844
1845static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1846{
1847 int ret = 0;
1848 u64 hret;
1849 u8 reg_type;
1850
1851 /* De/Register untagged packets */
1852 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1853 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1854 port->logical_port_id,
1855 reg_type, port->mac_addr, 0, hcallid);
1856 if (hret != H_SUCCESS) {
8c4877a4
JP		 1857 pr_err("%sregistering bc address failed (tagged)\n",
1858 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1859 ret = -EIO;
1860 goto out_herr;
1861 }
1862
1863 /* De/Register VLAN packets */
1864 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1865 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1866 port->logical_port_id,
1867 reg_type, port->mac_addr, 0, hcallid);
1868 if (hret != H_SUCCESS) {
8c4877a4
JP		 1869 pr_err("%sregistering bc address failed (vlan)\n",
1870 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1871 ret = -EIO;
1872 }
1873out_herr:
1874 return ret;
1875}
1876
1877static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1878{
1879 struct ehea_port *port = netdev_priv(dev);
1880 struct sockaddr *mac_addr = sa;
1881 struct hcp_ehea_port_cb0 *cb0;
1882 int ret;
1883 u64 hret;
1884
1885 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1886 ret = -EADDRNOTAVAIL;
1887 goto out;
1888 }
1889
3faf2693 1890 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1891 if (!cb0) {
8c4877a4 1892 pr_err("no mem for cb0\n");
7a291083
JBT		 1893 ret = -ENOMEM;
1894 goto out;
1895 }
1896
1897 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1898
1899 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1900
1901 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1902 port->logical_port_id, H_PORT_CB0,
1903 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1904 if (hret != H_SUCCESS) {
1905 ret = -EIO;
1906 goto out_free;
1907 }
1908
1909 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1910
1911 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1912 if (port->state == EHEA_PORT_UP) {
1913 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1914 if (ret)
1915 goto out_upregs;
1916 }
7a291083
JBT		 1917
1918 port->mac_addr = cb0->port_mac_addr << 16;
1919
1920 /* Register new MAC in pHYP */
00aaea2f
JBT		 1921 if (port->state == EHEA_PORT_UP) {
1922 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1923 if (ret)
1924 goto out_upregs;
1925 }
7a291083
JBT		 1926
1927 ret = 0;
21eee2dd
TK		 1928
1929out_upregs:
1930 ehea_update_bcmc_registrations();
7a291083 1931out_free:
3faf2693 1932 free_page((unsigned long)cb0);
7a291083
JBT		 1933out:
1934 return ret;
1935}
1936
1937static void ehea_promiscuous_error(u64 hret, int enable)
1938{
7674a588 1939 if (hret == H_AUTHORITY)
8c4877a4
JP		 1940 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1941 enable == 1 ? "en" : "dis");
7674a588 1942 else
8c4877a4
JP		 1943 pr_err("failed %sabling promiscuous mode\n",
1944 enable == 1 ? "en" : "dis");
7a291083
JBT		 1945}
1946
1947static void ehea_promiscuous(struct net_device *dev, int enable)
1948{
1949 struct ehea_port *port = netdev_priv(dev);
1950 struct hcp_ehea_port_cb7 *cb7;
1951 u64 hret;
1952
aa3bc6c6 1953 if (enable == port->promisc)
7a291083
JBT		 1954 return;
1955
3faf2693 1956 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1957 if (!cb7) {
8c4877a4 1958 pr_err("no mem for cb7\n");
7a291083
JBT		 1959 goto out;
1960 }
1961
1962 /* Modify Pxs_DUCQPN in CB7 */
1963 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1964
1965 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1966 port->logical_port_id,
1967 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1968 if (hret) {
1969 ehea_promiscuous_error(hret, enable);
1970 goto out;
1971 }
1972
1973 port->promisc = enable;
1974out:
3faf2693 1975 free_page((unsigned long)cb7);
7a291083
JBT		 1976}
1977
1978static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1979 u32 hcallid)
1980{
1981 u64 hret;
1982 u8 reg_type;
1983
1984 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1985 | EHEA_BCMC_UNTAGGED;
1986
1987 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1988 port->logical_port_id,
1989 reg_type, mc_mac_addr, 0, hcallid);
1990 if (hret)
1991 goto out;
1992
1993 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1994 | EHEA_BCMC_VLANID_ALL;
1995
1996 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1997 port->logical_port_id,
1998 reg_type, mc_mac_addr, 0, hcallid);
1999out:
2000 return hret;
2001}
2002
2003static int ehea_drop_multicast_list(struct net_device *dev)
2004{
2005 struct ehea_port *port = netdev_priv(dev);
2006 struct ehea_mc_list *mc_entry = port->mc_list;
2007 struct list_head *pos;
2008 struct list_head *temp;
2009 int ret = 0;
2010 u64 hret;
2011
2012 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2013 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2014
2015 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2016 H_DEREG_BCMC);
2017 if (hret) {
8c4877a4 2018 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 2019 ret = -EIO;
2020 }
2021
2022 list_del(pos);
2023 kfree(mc_entry);
2024 }
2025 return ret;
2026}
2027
2028static void ehea_allmulti(struct net_device *dev, int enable)
2029{
2030 struct ehea_port *port = netdev_priv(dev);
2031 u64 hret;
2032
2033 if (!port->allmulti) {
2034 if (enable) {
2035 /* Enable ALLMULTI */
2036 ehea_drop_multicast_list(dev);
2037 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2038 if (!hret)
2039 port->allmulti = 1;
2040 else
8c4877a4
JP		 2041 netdev_err(dev,
2042 "failed enabling IFF_ALLMULTI\n");
7a291083
JBT		 2043 }
2044 } else
2045 if (!enable) {
2046 /* Disable ALLMULTI */
2047 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2048 if (!hret)
2049 port->allmulti = 0;
2050 else
8c4877a4
JP		 2051 netdev_err(dev,
2052 "failed disabling IFF_ALLMULTI\n");
7a291083
JBT		 2053 }
2054}
2055
508d2b5d 2056static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2057{
2058 struct ehea_mc_list *ehea_mcl_entry;
2059 u64 hret;
2060
1e1675cc 2061 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 2062 if (!ehea_mcl_entry) {
8c4877a4 2063 pr_err("no mem for mcl_entry\n");
7a291083
JBT		 2064 return;
2065 }
2066
2067 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2068
2069 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2070
2071 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2072 H_REG_BCMC);
2073 if (!hret)
2074 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2075 else {
8c4877a4 2076 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 2077 kfree(ehea_mcl_entry);
2078 }
2079}
2080
2081static void ehea_set_multicast_list(struct net_device *dev)
2082{
2083 struct ehea_port *port = netdev_priv(dev);
22bedad3 2084 struct netdev_hw_addr *ha;
48e2f183 2085 int ret;
7a291083
JBT		 2086
2087 if (dev->flags & IFF_PROMISC) {
2088 ehea_promiscuous(dev, 1);
2089 return;
2090 }
2091 ehea_promiscuous(dev, 0);
2092
2093 if (dev->flags & IFF_ALLMULTI) {
2094 ehea_allmulti(dev, 1);
21eee2dd 2095 goto out;
7a291083
JBT		 2096 }
2097 ehea_allmulti(dev, 0);
2098
4cd24eaf 2099 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2100 ret = ehea_drop_multicast_list(dev);
2101 if (ret) {
2102 /* Dropping the current multicast list failed.
2103 * Enabling ALL_MULTI is the best we can do.
2104 */
2105 ehea_allmulti(dev, 1);
2106 }
2107
4cd24eaf 2108 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 2109 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
2110 port->adapter->max_mc_mac);
7a291083
JBT		 2111 goto out;
2112 }
2113
22bedad3
JP		 2114 netdev_for_each_mc_addr(ha, dev)
2115 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2116
7a291083
JBT		 2117 }
2118out:
21eee2dd 2119 ehea_update_bcmc_registrations();
7a291083
JBT		 2120}
2121
2122static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2123{
2124 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2125 return -EINVAL;
2126 dev->mtu = new_mtu;
2127 return 0;
2128}
2129
2130static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2131 struct ehea_swqe *swqe, u32 lkey)
2132{
2133 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2134 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2135
7a291083
JBT		 2136 /* IPv4 */
2137 swqe->tx_control |= EHEA_SWQE_CRC
2138 | EHEA_SWQE_IP_CHECKSUM
2139 | EHEA_SWQE_TCP_CHECKSUM
2140 | EHEA_SWQE_IMM_DATA_PRESENT
2141 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2142
2143 write_ip_start_end(swqe, skb);
2144
eddc9ec5 2145 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2146 if ((iph->frag_off & IP_MF) ||
2147 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2148 /* IP fragment, so don't change cs */
2149 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2150 else
2151 write_udp_offset_end(swqe, skb);
eddc9ec5 2152 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2153 write_tcp_offset_end(swqe, skb);
2154 }
2155
2156 /* icmp (big data) and ip segmentation packets (all other ip
2157 packets) do not require any special handling */
2158
2159 } else {
2160 /* Other Ethernet Protocol */
2161 swqe->tx_control |= EHEA_SWQE_CRC
2162 | EHEA_SWQE_IMM_DATA_PRESENT
2163 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2164 }
2165
2166 write_swqe2_data(skb, dev, swqe, lkey);
2167}
2168
2169static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2170 struct ehea_swqe *swqe)
2171{
2172 int nfrags = skb_shinfo(skb)->nr_frags;
2173 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2174 skb_frag_t *frag;
2175 int i;
2176
2177 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2178 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2179
7a291083
JBT		 2180 /* IPv4 */
2181 write_ip_start_end(swqe, skb);
2182
eddc9ec5 2183 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2184 swqe->tx_control |= EHEA_SWQE_CRC
2185 | EHEA_SWQE_IP_CHECKSUM
2186 | EHEA_SWQE_TCP_CHECKSUM
2187 | EHEA_SWQE_IMM_DATA_PRESENT;
2188
2189 write_tcp_offset_end(swqe, skb);
2190
eddc9ec5 2191 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2192 if ((iph->frag_off & IP_MF) ||
2193 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2194 /* IP fragment, so don't change cs */
2195 swqe->tx_control |= EHEA_SWQE_CRC
2196 | EHEA_SWQE_IMM_DATA_PRESENT;
2197 else {
2198 swqe->tx_control |= EHEA_SWQE_CRC
2199 | EHEA_SWQE_IP_CHECKSUM
2200 | EHEA_SWQE_TCP_CHECKSUM
2201 | EHEA_SWQE_IMM_DATA_PRESENT;
2202
2203 write_udp_offset_end(swqe, skb);
2204 }
2205 } else {
2206 /* icmp (big data) and
2207 ip segmentation packets (all other ip packets) */
2208 swqe->tx_control |= EHEA_SWQE_CRC
2209 | EHEA_SWQE_IP_CHECKSUM
2210 | EHEA_SWQE_IMM_DATA_PRESENT;
2211 }
2212 } else {
2213 /* Other Ethernet Protocol */
2214 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2215 }
2216 /* copy (immediate) data */
2217 if (nfrags == 0) {
2218 /* data is in a single piece */
d626f62b 2219 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2220 } else {
2221 /* first copy data from the skb->data buffer ... */
d626f62b 2222 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2223 skb_headlen(skb));
2224 imm_data += skb_headlen(skb);
7a291083
JBT		 2225
2226 /* ... then copy data from the fragments */
2227 for (i = 0; i < nfrags; i++) {
2228 frag = &skb_shinfo(skb)->frags[i];
2229 memcpy(imm_data,
2230 page_address(frag->page) + frag->page_offset,
2231 frag->size);
2232 imm_data += frag->size;
2233 }
2234 }
2235 swqe->immediate_data_length = skb->len;
2236 dev_kfree_skb(skb);
2237}
2238
18604c54
JBT		 2239static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2240{
2241 struct tcphdr *tcp;
2242 u32 tmp;
2243
2244 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2245 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2246 tcp = (struct tcphdr *)(skb_network_header(skb) +
2247 (ip_hdr(skb)->ihl * 4));
18604c54 2248 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2249 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2250 return tmp % num_qps;
508d2b5d 2251 } else
18604c54
JBT		 2252 return 0;
2253}
2254
7a291083
JBT		 2255static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2256{
2257 struct ehea_port *port = netdev_priv(dev);
2258 struct ehea_swqe *swqe;
2259 unsigned long flags;
2260 u32 lkey;
2261 int swqe_index;
18604c54
JBT		 2262 struct ehea_port_res *pr;
2263
2264 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2265
18604c54
JBT		 2266 if (!spin_trylock(&pr->xmit_lock))
2267 return NETDEV_TX_BUSY;
2268
2269 if (pr->queue_stopped) {
2270 spin_unlock(&pr->xmit_lock);
2271 return NETDEV_TX_BUSY;
2272 }
7a291083
JBT		 2273
2274 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2275 memset(swqe, 0, SWQE_HEADER_SIZE);
2276 atomic_dec(&pr->swqe_avail);
2277
e5ccd961
ED		 2278 if (vlan_tx_tag_present(skb)) {
2279 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2280 swqe->vlan_tag = vlan_tx_tag_get(skb);
2281 }
2282
ce45b873
BL		 2283 pr->tx_packets++;
2284 pr->tx_bytes += skb->len;
2285
7a291083
JBT		 2286 if (skb->len <= SWQE3_MAX_IMM) {
2287 u32 sig_iv = port->sig_comp_iv;
2288 u32 swqe_num = pr->swqe_id_counter;
2289 ehea_xmit3(skb, dev, swqe);
2290 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2291 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2292 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2293 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2294 sig_iv);
2295 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2296 pr->swqe_ll_count = 0;
2297 } else
2298 pr->swqe_ll_count += 1;
2299 } else {
2300 swqe->wr_id =
2301 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2302 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2303 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2304 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2305 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2306
2307 pr->sq_skba.index++;
2308 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2309
2310 lkey = pr->send_mr.lkey;
2311 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2312 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2313 }
2314 pr->swqe_id_counter += 1;
2315
8c4877a4
JP		 2316 netif_info(port, tx_queued, dev,
2317 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2318 if (netif_msg_tx_queued(port))
bff0a55f 2319 ehea_dump(swqe, 512, "swqe");
7a291083 2320
2c69448b
JBT		 2321 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2322 netif_stop_queue(dev);
2323 swqe->tx_control |= EHEA_SWQE_PURGE;
2324 }
44c82152 2325
7a291083 2326 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2327
2328 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2329 spin_lock_irqsave(&pr->netif_queue, flags);
2330 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2331 pr->p_stats.queue_stopped++;
7a291083
JBT		 2332 netif_stop_queue(dev);
2333 pr->queue_stopped = 1;
2334 }
2335 spin_unlock_irqrestore(&pr->netif_queue, flags);
2336 }
1ae5dc34 2337 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2338 spin_unlock(&pr->xmit_lock);
2c69448b 2339
7a291083
JBT		 2340 return NETDEV_TX_OK;
2341}
2342
2343static void ehea_vlan_rx_register(struct net_device *dev,
2344 struct vlan_group *grp)
2345{
2346 struct ehea_port *port = netdev_priv(dev);
2347 struct ehea_adapter *adapter = port->adapter;
2348 struct hcp_ehea_port_cb1 *cb1;
2349 u64 hret;
2350
2351 port->vgrp = grp;
2352
3faf2693 2353 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2354 if (!cb1) {
8c4877a4 2355 pr_err("no mem for cb1\n");
7a291083
JBT		 2356 goto out;
2357 }
2358
7a291083
JBT		 2359 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2360 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2361 if (hret != H_SUCCESS)
8c4877a4 2362 pr_err("modify_ehea_port failed\n");
7a291083 2363
3faf2693 2364 free_page((unsigned long)cb1);
7a291083
JBT		 2365out:
2366 return;
2367}
2368
2369static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2370{
2371 struct ehea_port *port = netdev_priv(dev);
2372 struct ehea_adapter *adapter = port->adapter;
2373 struct hcp_ehea_port_cb1 *cb1;
2374 int index;
2375 u64 hret;
2376
3faf2693 2377 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2378 if (!cb1) {
8c4877a4 2379 pr_err("no mem for cb1\n");
7a291083
JBT		 2380 goto out;
2381 }
2382
2383 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2384 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2385 if (hret != H_SUCCESS) {
8c4877a4 2386 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2387 goto out;
2388 }
2389
2390 index = (vid / 64);
dec590c1 2391 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2392
2393 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2394 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2395 if (hret != H_SUCCESS)
8c4877a4 2396 pr_err("modify_ehea_port failed\n");
7a291083 2397out:
3faf2693 2398 free_page((unsigned long)cb1);
7a291083
JBT		 2399 return;
2400}
2401
2402static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2403{
2404 struct ehea_port *port = netdev_priv(dev);
2405 struct ehea_adapter *adapter = port->adapter;
2406 struct hcp_ehea_port_cb1 *cb1;
2407 int index;
2408 u64 hret;
2409
5c15bdec 2410 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2411
3faf2693 2412 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2413 if (!cb1) {
8c4877a4 2414 pr_err("no mem for cb1\n");
7a291083
JBT		 2415 goto out;
2416 }
2417
2418 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2419 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2420 if (hret != H_SUCCESS) {
8c4877a4 2421 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2422 goto out;
2423 }
2424
2425 index = (vid / 64);
dec590c1 2426 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2427
2428 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2429 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2430 if (hret != H_SUCCESS)
8c4877a4 2431 pr_err("modify_ehea_port failed\n");
7a291083 2432out:
3faf2693 2433 free_page((unsigned long)cb1);
7a291083
JBT		 2434}
2435
2436int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2437{
2438 int ret = -EIO;
2439 u64 hret;
2440 u16 dummy16 = 0;
2441 u64 dummy64 = 0;
508d2b5d 2442 struct hcp_modify_qp_cb0 *cb0;
7a291083 2443
3faf2693 2444 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2445 if (!cb0) {
2446 ret = -ENOMEM;
2447 goto out;
2448 }
2449
2450 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2451 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2452 if (hret != H_SUCCESS) {
8c4877a4 2453 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2454 goto out;
2455 }
2456
2457 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2458 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2459 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2460 &dummy64, &dummy64, &dummy16, &dummy16);
2461 if (hret != H_SUCCESS) {
8c4877a4 2462 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2463 goto out;
2464 }
2465
2466 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2467 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2468 if (hret != H_SUCCESS) {
8c4877a4 2469 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2470 goto out;
2471 }
2472
2473 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2474 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2475 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2476 &dummy64, &dummy64, &dummy16, &dummy16);
2477 if (hret != H_SUCCESS) {
8c4877a4 2478 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2479 goto out;
2480 }
2481
2482 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2483 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2484 if (hret != H_SUCCESS) {
8c4877a4 2485 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2486 goto out;
2487 }
2488
2489 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2490 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2491 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2492 &dummy64, &dummy64, &dummy16, &dummy16);
2493 if (hret != H_SUCCESS) {
8c4877a4 2494 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2495 goto out;
2496 }
2497
2498 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2499 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2500 if (hret != H_SUCCESS) {
8c4877a4 2501 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2502 goto out;
2503 }
2504
2505 ret = 0;
2506out:
3faf2693 2507 free_page((unsigned long)cb0);
7a291083
JBT		 2508 return ret;
2509}
2510
2511static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2512 int add_tx_qps)
2513{
2514 int ret, i;
2515 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2516 enum ehea_eq_type eq_type = EHEA_EQ;
2517
2518 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2519 EHEA_MAX_ENTRIES_EQ, 1);
2520 if (!port->qp_eq) {
2521 ret = -EINVAL;
8c4877a4 2522 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2523 goto out_kill_eq;
2524 }
2525
2526 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2527 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2528 pr_cfg.max_entries_sq = sq_entries;
2529 pr_cfg.max_entries_rq1 = rq1_entries;
2530 pr_cfg.max_entries_rq2 = rq2_entries;
2531 pr_cfg.max_entries_rq3 = rq3_entries;
2532
2533 pr_cfg_small_rx.max_entries_rcq = 1;
2534 pr_cfg_small_rx.max_entries_scq = sq_entries;
2535 pr_cfg_small_rx.max_entries_sq = sq_entries;
2536 pr_cfg_small_rx.max_entries_rq1 = 1;
2537 pr_cfg_small_rx.max_entries_rq2 = 1;
2538 pr_cfg_small_rx.max_entries_rq3 = 1;
2539
2540 for (i = 0; i < def_qps; i++) {
2541 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2542 if (ret)
2543 goto out_clean_pr;
2544 }
2545 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2546 ret = ehea_init_port_res(port, &port->port_res[i],
2547 &pr_cfg_small_rx, i);
2548 if (ret)
2549 goto out_clean_pr;
2550 }
2551
2552 return 0;
2553
2554out_clean_pr:
2555 while (--i >= 0)
2556 ehea_clean_portres(port, &port->port_res[i]);
2557
2558out_kill_eq:
2559 ehea_destroy_eq(port->qp_eq);
2560 return ret;
2561}
2562
2563static int ehea_clean_all_portres(struct ehea_port *port)
2564{
2565 int ret = 0;
2566 int i;
2567
508d2b5d 2568 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2569 ret |= ehea_clean_portres(port, &port->port_res[i]);
2570
2571 ret |= ehea_destroy_eq(port->qp_eq);
2572
2573 return ret;
2574}
2575
35cf2e2e 2576static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2577{
35cf2e2e
TK		 2578 if (adapter->active_ports)
2579 return;
1211bb6d
TK		 2580
2581 ehea_rem_mr(&adapter->mr);
2582}
2583
35cf2e2e 2584static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2585{
35cf2e2e
TK		 2586 if (adapter->active_ports)
2587 return 0;
1211bb6d
TK		 2588
2589 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2590}
2591
7a291083
JBT		 2592static int ehea_up(struct net_device *dev)
2593{
2594 int ret, i;
2595 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2596
2597 if (port->state == EHEA_PORT_UP)
2598 return 0;
2599
2600 ret = ehea_port_res_setup(port, port->num_def_qps,
2601 port->num_add_tx_qps);
2602 if (ret) {
8c4877a4 2603 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2604 goto out;
2605 }
2606
2607 /* Set default QP for this port */
2608 ret = ehea_configure_port(port);
2609 if (ret) {
8c4877a4 2610 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2611 goto out_clean_pr;
2612 }
2613
7a291083
JBT		 2614 ret = ehea_reg_interrupts(dev);
2615 if (ret) {
8c4877a4 2616 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2617 goto out_clean_pr;
7a291083
JBT		 2618 }
2619
508d2b5d 2620 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2621 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2622 if (ret) {
8c4877a4 2623 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2624 goto out_free_irqs;
2625 }
2626 }
2627
508d2b5d 2628 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2629 ret = ehea_fill_port_res(&port->port_res[i]);
2630 if (ret) {
8c4877a4 2631 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2632 goto out_free_irqs;
2633 }
2634 }
2635
21eee2dd
TK		 2636 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2637 if (ret) {
2638 ret = -EIO;
2639 goto out_free_irqs;
2640 }
2641
7a291083 2642 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2643
2644 ret = 0;
7a291083
JBT		 2645 goto out;
2646
2647out_free_irqs:
2648 ehea_free_interrupts(dev);
2649
7a291083
JBT		 2650out_clean_pr:
2651 ehea_clean_all_portres(port);
2652out:
44c82152 2653 if (ret)
8c4877a4 2654 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2655
21eee2dd 2656 ehea_update_bcmc_registrations();
21eee2dd 2657 ehea_update_firmware_handles();
21eee2dd 2658
7a291083
JBT		 2659 return ret;
2660}
2661
bea3348e
SH		 2662static void port_napi_disable(struct ehea_port *port)
2663{
2664 int i;
2665
0173b793 2666 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2667 napi_disable(&port->port_res[i].napi);
2668}
2669
2670static void port_napi_enable(struct ehea_port *port)
2671{
2672 int i;
2673
0173b793 2674 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2675 napi_enable(&port->port_res[i].napi);
2676}
2677
7a291083
JBT		 2678static int ehea_open(struct net_device *dev)
2679{
2680 int ret;
2681 struct ehea_port *port = netdev_priv(dev);
2682
a5af6ad3 2683 mutex_lock(&port->port_lock);
7a291083 2684
8c4877a4 2685 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2686
2687 ret = ehea_up(dev);
bea3348e
SH		 2688 if (!ret) {
2689 port_napi_enable(port);
7a291083 2690 netif_start_queue(dev);
bea3348e 2691 }
7a291083 2692
5b27d427 2693 init_waitqueue_head(&port->swqe_avail_wq);
a8bb69f7 2694 init_waitqueue_head(&port->restart_wq);
5b27d427 2695
a5af6ad3 2696 mutex_unlock(&port->port_lock);
7a291083
JBT		 2697
2698 return ret;
2699}
2700
2701static int ehea_down(struct net_device *dev)
2702{
bea3348e 2703 int ret;
7a291083
JBT		 2704 struct ehea_port *port = netdev_priv(dev);
2705
2706 if (port->state == EHEA_PORT_DOWN)
2707 return 0;
2708
2709 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2710 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2711
7a291083
JBT		 2712 ehea_free_interrupts(dev);
2713
7a291083 2714 port->state = EHEA_PORT_DOWN;
44c82152 2715
21eee2dd 2716 ehea_update_bcmc_registrations();
21eee2dd 2717
44c82152
TK		 2718 ret = ehea_clean_all_portres(port);
2719 if (ret)
8c4877a4 2720 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2721
21eee2dd 2722 ehea_update_firmware_handles();
21eee2dd 2723
7a291083
JBT		 2724 return ret;
2725}
2726
2727static int ehea_stop(struct net_device *dev)
2728{
2729 int ret;
2730 struct ehea_port *port = netdev_priv(dev);
2731
8c4877a4 2732 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2733
2f69ae01 2734 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2735 cancel_work_sync(&port->reset_task);
a5af6ad3 2736 mutex_lock(&port->port_lock);
7a291083 2737 netif_stop_queue(dev);
0173b793 2738 port_napi_disable(port);
7a291083 2739 ret = ehea_down(dev);
a5af6ad3 2740 mutex_unlock(&port->port_lock);
2f69ae01 2741 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2742 return ret;
2743}
2744
22559c5d 2745static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2746{
2747 struct ehea_qp qp = *orig_qp;
2748 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2749 struct ehea_swqe *swqe;
2750 int wqe_index;
2751 int i;
2752
2753 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2754 swqe = ehea_get_swqe(&qp, &wqe_index);
2755 swqe->tx_control |= EHEA_SWQE_PURGE;
2756 }
2757}
2758
22559c5d 2759static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2760{
2761 int i;
2762
2763 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2764 struct ehea_port_res *pr = &port->port_res[i];
2765 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2766 int ret;
2767
2768 ret = wait_event_timeout(port->swqe_avail_wq,
2769 atomic_read(&pr->swqe_avail) >= swqe_max,
2770 msecs_to_jiffies(100));
2771
2772 if (!ret) {
8c4877a4 2773 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2774 break;
44fb3126
TK		 2775 }
2776 }
2777}
2778
2c69448b
JBT		 2779int ehea_stop_qps(struct net_device *dev)
2780{
2781 struct ehea_port *port = netdev_priv(dev);
2782 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2783 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2784 int ret = -EIO;
2785 int dret;
2786 int i;
2787 u64 hret;
2788 u64 dummy64 = 0;
2789 u16 dummy16 = 0;
2790
3faf2693 2791 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2792 if (!cb0) {
2793 ret = -ENOMEM;
2794 goto out;
2795 }
2796
2797 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2798 struct ehea_port_res *pr = &port->port_res[i];
2799 struct ehea_qp *qp = pr->qp;
2800
2801 /* Purge send queue */
2802 ehea_purge_sq(qp);
2803
2804 /* Disable queue pair */
2805 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2806 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2807 cb0);
2808 if (hret != H_SUCCESS) {
8c4877a4 2809 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2810 goto out;
2811 }
2812
2813 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2814 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2815
2816 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2817 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2818 1), cb0, &dummy64,
2819 &dummy64, &dummy16, &dummy16);
2820 if (hret != H_SUCCESS) {
8c4877a4 2821 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2822 goto out;
2823 }
2824
2825 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2826 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2827 cb0);
2828 if (hret != H_SUCCESS) {
8c4877a4 2829 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2830 goto out;
2831 }
2832
2833 /* deregister shared memory regions */
2834 dret = ehea_rem_smrs(pr);
2835 if (dret) {
8c4877a4 2836 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2837 goto out;
2838 }
2839 }
2840
2841 ret = 0;
2842out:
3faf2693 2843 free_page((unsigned long)cb0);
2c69448b
JBT		 2844
2845 return ret;
2846}
2847
508d2b5d 2848void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2849{
2850 struct ehea_qp qp = *orig_qp;
2851 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2852 struct ehea_rwqe *rwqe;
2853 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2854 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2855 struct sk_buff *skb;
2856 u32 lkey = pr->recv_mr.lkey;
2857
2858
2859 int i;
2860 int index;
2861
2862 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2863 rwqe = ehea_get_next_rwqe(&qp, 2);
2864 rwqe->sg_list[0].l_key = lkey;
2865 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2866 skb = skba_rq2[index];
2867 if (skb)
2868 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2869 }
2870
2871 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2872 rwqe = ehea_get_next_rwqe(&qp, 3);
2873 rwqe->sg_list[0].l_key = lkey;
2874 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2875 skb = skba_rq3[index];
2876 if (skb)
2877 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2878 }
2879}
2880
2881int ehea_restart_qps(struct net_device *dev)
2882{
2883 struct ehea_port *port = netdev_priv(dev);
2884 struct ehea_adapter *adapter = port->adapter;
2885 int ret = 0;
2886 int i;
2887
508d2b5d 2888 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2889 u64 hret;
2890 u64 dummy64 = 0;
2891 u16 dummy16 = 0;
2892
3faf2693 2893 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2894 if (!cb0) {
2895 ret = -ENOMEM;
2896 goto out;
2897 }
2898
2899 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2900 struct ehea_port_res *pr = &port->port_res[i];
2901 struct ehea_qp *qp = pr->qp;
2902
2903 ret = ehea_gen_smrs(pr);
2904 if (ret) {
8c4877a4 2905 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2906 goto out;
2907 }
2908
2909 ehea_update_rqs(qp, pr);
2910
2911 /* Enable queue pair */
2912 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2913 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2914 cb0);
2915 if (hret != H_SUCCESS) {
8c4877a4 2916 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2917 goto out;
2918 }
2919
2920 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2921 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2922
2923 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2924 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2925 1), cb0, &dummy64,
2926 &dummy64, &dummy16, &dummy16);
2927 if (hret != H_SUCCESS) {
8c4877a4 2928 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2929 goto out;
2930 }
2931
2932 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2933 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2934 cb0);
2935 if (hret != H_SUCCESS) {
8c4877a4 2936 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2937 goto out;
2938 }
2939
2940 /* refill entire queue */
2941 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2942 ehea_refill_rq2(pr, 0);
2943 ehea_refill_rq3(pr, 0);
2944 }
2945out:
3faf2693 2946 free_page((unsigned long)cb0);
2c69448b
JBT		 2947
2948 return ret;
2949}
2950
c4028958 2951static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2952{
2953 int ret;
c4028958
DH		 2954 struct ehea_port *port =
2955 container_of(work, struct ehea_port, reset_task);
2956 struct net_device *dev = port->netdev;
7a291083 2957
099473c1 2958 mutex_lock(&dlpar_mem_lock);
7a291083 2959 port->resets++;
a5af6ad3 2960 mutex_lock(&port->port_lock);
7a291083 2961 netif_stop_queue(dev);
bea3348e
SH		 2962
2963 port_napi_disable(port);
7a291083 2964
44c82152 2965 ehea_down(dev);
7a291083
JBT		 2966
2967 ret = ehea_up(dev);
44c82152 2968 if (ret)
7a291083 2969 goto out;
7a291083 2970
2c69448b
JBT		 2971 ehea_set_multicast_list(dev);
2972
8c4877a4 2973 netif_info(port, timer, dev, "reset successful\n");
7a291083 2974
bea3348e
SH		 2975 port_napi_enable(port);
2976
7a291083
JBT		 2977 netif_wake_queue(dev);
2978out:
a5af6ad3 2979 mutex_unlock(&port->port_lock);
099473c1 2980 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2981}
2982
3d6b892b 2983static void ehea_rereg_mrs(void)
44c82152
TK		 2984{
2985 int ret, i;
2986 struct ehea_adapter *adapter;
2987
8c4877a4 2988 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2989
2990 list_for_each_entry(adapter, &adapter_list, list)
2991 if (adapter->active_ports) {
2992 /* Shutdown all ports */
2993 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2994 struct ehea_port *port = adapter->port[i];
a5af6ad3 2995 struct net_device *dev;
44c82152 2996
a5af6ad3
DW		 2997 if (!port)
2998 continue;
44c82152 2999
a5af6ad3
DW		 3000 dev = port->netdev;
3001
3002 if (dev->flags & IFF_UP) {
3003 mutex_lock(&port->port_lock);
3004 netif_stop_queue(dev);
df39e8ba 3005 ehea_flush_sq(port);
a5af6ad3
DW		 3006 ret = ehea_stop_qps(dev);
3007 if (ret) {
3008 mutex_unlock(&port->port_lock);
3009 goto out;
44c82152 3010 }
a5af6ad3
DW		 3011 port_napi_disable(port);
3012 mutex_unlock(&port->port_lock);
44c82152 3013 }
2928db4c 3014 reset_sq_restart_flag(port);
44c82152
TK		 3015 }
3016
3017 /* Unregister old memory region */
3018 ret = ehea_rem_mr(&adapter->mr);
3019 if (ret) {
8c4877a4 3020 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 3021 goto out;
3022 }
3023 }
3024
44c82152
TK		 3025 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3026
3027 list_for_each_entry(adapter, &adapter_list, list)
3028 if (adapter->active_ports) {
3029 /* Register new memory region */
3030 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3031 if (ret) {
8c4877a4 3032 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 3033 goto out;
3034 }
3035
3036 /* Restart all ports */
3037 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3038 struct ehea_port *port = adapter->port[i];
3039
3040 if (port) {
3041 struct net_device *dev = port->netdev;
3042
3043 if (dev->flags & IFF_UP) {
a5af6ad3 3044 mutex_lock(&port->port_lock);
2c69448b
JBT		 3045 port_napi_enable(port);
3046 ret = ehea_restart_qps(dev);
2928db4c 3047 check_sqs(port);
2c69448b 3048 if (!ret)
44c82152 3049 netif_wake_queue(dev);
a5af6ad3 3050 mutex_unlock(&port->port_lock);
44c82152
TK		 3051 }
3052 }
3053 }
3054 }
8c4877a4 3055 pr_info("re-initializing driver complete\n");
44c82152
TK		 3056out:
3057 return;
3058}
3059
7a291083
JBT		 3060static void ehea_tx_watchdog(struct net_device *dev)
3061{
3062 struct ehea_port *port = netdev_priv(dev);
3063
2c69448b
JBT		 3064 if (netif_carrier_ok(dev) &&
3065 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3066 ehea_schedule_port_reset(port);
7a291083
JBT		 3067}
3068
3069int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3070{
3071 struct hcp_query_ehea *cb;
3072 u64 hret;
3073 int ret;
3074
3faf2693 3075 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3076 if (!cb) {
3077 ret = -ENOMEM;
3078 goto out;
3079 }
3080
3081 hret = ehea_h_query_ehea(adapter->handle, cb);
3082
3083 if (hret != H_SUCCESS) {
3084 ret = -EIO;
3085 goto out_herr;
3086 }
3087
7a291083
JBT		 3088 adapter->max_mc_mac = cb->max_mc_mac - 1;
3089 ret = 0;
3090
3091out_herr:
3faf2693 3092 free_page((unsigned long)cb);
7a291083
JBT		 3093out:
3094 return ret;
3095}
3096
1acf2318 3097int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3098{
7a291083 3099 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3100 u64 hret;
3101 int ret = 0;
7a291083 3102
1acf2318 3103 *jumbo = 0;
7a291083 3104
1acf2318 3105 /* (Try to) enable *jumbo frames */
3faf2693 3106 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 3107 if (!cb4) {
8c4877a4 3108 pr_err("no mem for cb4\n");
1acf2318
JBT		 3109 ret = -ENOMEM;
3110 goto out;
7a291083 3111 } else {
1acf2318 3112 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3113 port->logical_port_id,
3114 H_PORT_CB4,
3115 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3116 if (hret == H_SUCCESS) {
3117 if (cb4->jumbo_frame)
1acf2318 3118 *jumbo = 1;
9c750b7d
TK		 3119 else {
3120 cb4->jumbo_frame = 1;
1acf2318
JBT		 3121 hret = ehea_h_modify_ehea_port(port->adapter->
3122 handle,
9c750b7d 3123 port->
1acf2318 3124 logical_port_id,
9c750b7d
TK		 3125 H_PORT_CB4,
3126 H_PORT_CB4_JUMBO,
3127 cb4);
3128 if (hret == H_SUCCESS)
1acf2318 3129 *jumbo = 1;
9c750b7d 3130 }
1acf2318
JBT		 3131 } else
3132 ret = -EINVAL;
3133
3faf2693 3134 free_page((unsigned long)cb4);
7a291083 3135 }
1acf2318
JBT		 3136out:
3137 return ret;
3138}
3139
3140static ssize_t ehea_show_port_id(struct device *dev,
3141 struct device_attribute *attr, char *buf)
3142{
3143 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3144 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3145}
3146
3147static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3148 NULL);
3149
3150static void __devinit logical_port_release(struct device *dev)
3151{
3152 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3153 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3154}
3155
3156static struct device *ehea_register_port(struct ehea_port *port,
3157 struct device_node *dn)
3158{
3159 int ret;
3160
61c7a080 3161 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3162 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3163 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3164
db1d7bf7 3165 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3166 port->ofdev.dev.release = logical_port_release;
3167
3168 ret = of_device_register(&port->ofdev);
3169 if (ret) {
8c4877a4 3170 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 3171 goto out;
3172 }
3173
3174 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3175 if (ret) {
8c4877a4 3176 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 3177 goto out_unreg_of_dev;
3178 }
e542aa6b 3179
1acf2318
JBT		 3180 return &port->ofdev.dev;
3181
3182out_unreg_of_dev:
3183 of_device_unregister(&port->ofdev);
3184out:
3185 return NULL;
3186}
3187
3188static void ehea_unregister_port(struct ehea_port *port)
3189{
3190 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3191 of_device_unregister(&port->ofdev);
3192}
3193
086c1b2c
TK		 3194static const struct net_device_ops ehea_netdev_ops = {
3195 .ndo_open = ehea_open,
3196 .ndo_stop = ehea_stop,
3197 .ndo_start_xmit = ehea_start_xmit,
3198#ifdef CONFIG_NET_POLL_CONTROLLER
3199 .ndo_poll_controller = ehea_netpoll,
3200#endif
3201 .ndo_get_stats = ehea_get_stats,
3202 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3203 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3204 .ndo_set_multicast_list = ehea_set_multicast_list,
3205 .ndo_change_mtu = ehea_change_mtu,
3206 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3207 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3208 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3209 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3210};
3211
1acf2318
JBT		 3212struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3213 u32 logical_port_id,
3214 struct device_node *dn)
3215{
3216 int ret;
3217 struct net_device *dev;
3218 struct ehea_port *port;
3219 struct device *port_dev;
3220 int jumbo;
3221
3222 /* allocate memory for the port structures */
3223 dev = alloc_etherdev(sizeof(struct ehea_port));
3224
3225 if (!dev) {
8c4877a4 3226 pr_err("no mem for net_device\n");
1acf2318
JBT		 3227 ret = -ENOMEM;
3228 goto out_err;
3229 }
3230
3231 port = netdev_priv(dev);
3232
a5af6ad3 3233 mutex_init(&port->port_lock);
1acf2318
JBT		 3234 port->state = EHEA_PORT_DOWN;
3235 port->sig_comp_iv = sq_entries / 10;
3236
3237 port->adapter = adapter;
3238 port->netdev = dev;
3239 port->logical_port_id = logical_port_id;
3240
3241 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3242
3243 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3244 if (!port->mc_list) {
3245 ret = -ENOMEM;
3246 goto out_free_ethdev;
3247 }
3248
3249 INIT_LIST_HEAD(&port->mc_list->list);
3250
3251 ret = ehea_sense_port_attr(port);
3252 if (ret)
3253 goto out_free_mc_list;
3254
3255 port_dev = ehea_register_port(port, dn);
3256 if (!port_dev)
3257 goto out_free_mc_list;
3258
3259 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3260
3261 /* initialize net_device structure */
7a291083
JBT		 3262 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3263
086c1b2c
TK		 3264 dev->netdev_ops = &ehea_netdev_ops;
3265 ehea_set_ethtool_ops(dev);
3266
7a291083 3267 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3268 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3269 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3270 | NETIF_F_LLTX;
7a291083
JBT		 3271 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3272
c7757fdb
BL		 3273 if (use_lro)
3274 dev->features |= NETIF_F_LRO;
3275
c4028958 3276 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3277
3278 ret = register_netdev(dev);
3279 if (ret) {
8c4877a4 3280 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3281 goto out_unreg_port;
7a291083
JBT		 3282 }
3283
d4dc4ec9
JBT		 3284 port->lro_max_aggr = lro_max_aggr;
3285
1acf2318 3286 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3287 if (ret)
8c4877a4 3288 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3289
8c4877a4
JP		 3290 netdev_info(dev, "Jumbo frames are %sabled\n",
3291 jumbo == 1 ? "en" : "dis");
9c750b7d 3292
44c82152
TK		 3293 adapter->active_ports++;
3294
1acf2318 3295 return port;
7a291083 3296
1acf2318
JBT		 3297out_unreg_port:
3298 ehea_unregister_port(port);
3299
3300out_free_mc_list:
7a291083 3301 kfree(port->mc_list);
1acf2318
JBT		 3302
3303out_free_ethdev:
3304 free_netdev(dev);
3305
3306out_err:
8c4877a4
JP		 3307 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3308 logical_port_id, ret);
1acf2318
JBT		 3309 return NULL;
3310}
3311
3312static void ehea_shutdown_single_port(struct ehea_port *port)
3313{
7fb1c2ac 3314 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3315
3316 cancel_work_sync(&port->reset_task);
1acf2318
JBT		 3317 unregister_netdev(port->netdev);
3318 ehea_unregister_port(port);
3319 kfree(port->mc_list);
3320 free_netdev(port->netdev);
7fb1c2ac 3321 adapter->active_ports--;
7a291083
JBT		 3322}
3323
3324static int ehea_setup_ports(struct ehea_adapter *adapter)
3325{
1acf2318
JBT		 3326 struct device_node *lhea_dn;
3327 struct device_node *eth_dn = NULL;
d1d25aab 3328
9f9a3b8a 3329 const u32 *dn_log_port_id;
1acf2318
JBT		 3330 int i = 0;
3331
61c7a080 3332 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3333 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3334
40cd3a45 3335 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3336 NULL);
1acf2318 3337 if (!dn_log_port_id) {
8c4877a4
JP		 3338 pr_err("bad device node: eth_dn name=%s\n",
3339 eth_dn->full_name);
1acf2318
JBT		 3340 continue;
3341 }
7a291083 3342
1211bb6d 3343 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3344 pr_err("creating MR failed\n");
1211bb6d
TK		 3345 of_node_put(eth_dn);
3346 return -EIO;
3347 }
3348
1acf2318
JBT		 3349 adapter->port[i] = ehea_setup_single_port(adapter,
3350 *dn_log_port_id,
3351 eth_dn);
7a291083 3352 if (adapter->port[i])
8c4877a4
JP		 3353 netdev_info(adapter->port[i]->netdev,
3354 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3355 else
3356 ehea_remove_adapter_mr(adapter);
3357
1acf2318 3358 i++;
ee289b64 3359 }
1211bb6d 3360 return 0;
1acf2318
JBT		 3361}
3362
e542aa6b
JBT		 3363static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3364 u32 logical_port_id)
1acf2318
JBT		 3365{
3366 struct device_node *lhea_dn;
3367 struct device_node *eth_dn = NULL;
9f9a3b8a 3368 const u32 *dn_log_port_id;
1acf2318 3369
61c7a080 3370 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3371 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3372
40cd3a45 3373 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3374 NULL);
1acf2318
JBT		 3375 if (dn_log_port_id)
3376 if (*dn_log_port_id == logical_port_id)
3377 return eth_dn;
ee289b64 3378 }
1acf2318
JBT		 3379
3380 return NULL;
3381}
3382
3383static ssize_t ehea_probe_port(struct device *dev,
3384 struct device_attribute *attr,
3385 const char *buf, size_t count)
3386{
c7ae011d 3387 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3388 struct ehea_port *port;
3389 struct device_node *eth_dn = NULL;
3390 int i;
3391
3392 u32 logical_port_id;
3393
a8e34fda 3394 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3395
3396 port = ehea_get_port(adapter, logical_port_id);
3397
3398 if (port) {
8c4877a4
JP		 3399 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3400 logical_port_id);
1acf2318 3401 return -EINVAL;
7a291083 3402 }
e542aa6b 3403
1acf2318 3404 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3405
1acf2318 3406 if (!eth_dn) {
8c4877a4 3407 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3408 return -EINVAL;
3409 }
e542aa6b 3410
1211bb6d 3411 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3412 pr_err("creating MR failed\n");
1211bb6d
TK		 3413 return -EIO;
3414 }
3415
1acf2318 3416 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3417
1eef4e04
JBT		 3418 of_node_put(eth_dn);
3419
1acf2318 3420 if (port) {
508d2b5d 3421 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3422 if (!adapter->port[i]) {
3423 adapter->port[i] = port;
3424 break;
3425 }
7a291083 3426
8c4877a4
JP		 3427 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3428 logical_port_id);
1211bb6d
TK		 3429 } else {
3430 ehea_remove_adapter_mr(adapter);
e542aa6b 3431 return -EIO;
1211bb6d 3432 }
7a291083 3433
1acf2318
JBT		 3434 return (ssize_t) count;
3435}
3436
3437static ssize_t ehea_remove_port(struct device *dev,
3438 struct device_attribute *attr,
3439 const char *buf, size_t count)
3440{
c7ae011d 3441 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3442 struct ehea_port *port;
3443 int i;
3444 u32 logical_port_id;
3445
a8e34fda 3446 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3447
3448 port = ehea_get_port(adapter, logical_port_id);
3449
3450 if (port) {
8c4877a4
JP		 3451 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3452 logical_port_id);
1acf2318
JBT		 3453
3454 ehea_shutdown_single_port(port);
3455
508d2b5d 3456 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3457 if (adapter->port[i] == port) {
3458 adapter->port[i] = NULL;
3459 break;
3460 }
3461 } else {
8c4877a4
JP		 3462 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3463 logical_port_id);
1acf2318
JBT		 3464 return -EINVAL;
3465 }
3466
1211bb6d
TK		 3467 ehea_remove_adapter_mr(adapter);
3468
1acf2318
JBT		 3469 return (ssize_t) count;
3470}
3471
3472static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3473static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3474
2dc11581 3475int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3476{
6b08f3ae 3477 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3478 if (ret)
3479 goto out;
3480
6b08f3ae 3481 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3482out:
7a291083
JBT		 3483 return ret;
3484}
3485
2dc11581 3486void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3487{
6b08f3ae
JF		 3488 device_remove_file(&dev->dev, &dev_attr_probe_port);
3489 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3490}
3491
2dc11581 3492static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3493 const struct of_device_id *id)
7a291083
JBT		 3494{
3495 struct ehea_adapter *adapter;
9f9a3b8a 3496 const u64 *adapter_handle;
7a291083
JBT		 3497 int ret;
3498
61c7a080 3499 if (!dev || !dev->dev.of_node) {
8c4877a4 3500 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3501 return -EINVAL;
3502 }
3503
7a291083
JBT		 3504 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3505 if (!adapter) {
3506 ret = -ENOMEM;
6b08f3ae 3507 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3508 goto out;
3509 }
3510
44c82152
TK		 3511 list_add(&adapter->list, &adapter_list);
3512
6b08f3ae 3513 adapter->ofdev = dev;
1acf2318 3514
61c7a080 3515 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3516 NULL);
061bf3cd
TK		 3517 if (adapter_handle)
3518 adapter->handle = *adapter_handle;
3519
3520 if (!adapter->handle) {
6b08f3ae 3521 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3522 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3523 ret = -ENODEV;
3524 goto out_free_ad;
3525 }
3526
7a291083
JBT		 3527 adapter->pd = EHEA_PD_ID;
3528
c7ae011d 3529 dev_set_drvdata(&dev->dev, adapter);
7a291083 3530
7a291083
JBT		 3531
3532 /* initialize adapter and ports */
3533 /* get adapter properties */
3534 ret = ehea_sense_adapter_attr(adapter);
3535 if (ret) {
898eb71c 3536 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3537 goto out_free_ad;
7a291083 3538 }
7a291083
JBT		 3539
3540 adapter->neq = ehea_create_eq(adapter,
3541 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3542 if (!adapter->neq) {
1eef4e04 3543 ret = -EIO;
898eb71c 3544 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3545 goto out_free_ad;
7a291083
JBT		 3546 }
3547
3548 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3549 (unsigned long)adapter);
3550
6b08f3ae 3551 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3552 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3553 "ehea_neq", adapter);
3554 if (ret) {
898eb71c 3555 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3556 goto out_kill_eq;
3557 }
3558
1eef4e04
JBT		 3559 ret = ehea_create_device_sysfs(dev);
3560 if (ret)
3bf76b81 3561 goto out_free_irq;
1acf2318 3562
7a291083
JBT		 3563 ret = ehea_setup_ports(adapter);
3564 if (ret) {
898eb71c 3565 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3566 goto out_rem_dev_sysfs;
7a291083
JBT		 3567 }
3568
3569 ret = 0;
3570 goto out;
3571
1acf2318
JBT		 3572out_rem_dev_sysfs:
3573 ehea_remove_device_sysfs(dev);
3574
7a291083 3575out_free_irq:
6b08f3ae 3576 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3577
3578out_kill_eq:
3579 ehea_destroy_eq(adapter->neq);
3580
7a291083 3581out_free_ad:
51621fbd 3582 list_del(&adapter->list);
7a291083 3583 kfree(adapter);
21eee2dd 3584
7a291083 3585out:
21eee2dd 3586 ehea_update_firmware_handles();
52e21b1b 3587
7a291083
JBT		 3588 return ret;
3589}
3590
2dc11581 3591static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3592{
c7ae011d 3593 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3594 int i;
3595
1acf2318 3596 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3597 if (adapter->port[i]) {
3598 ehea_shutdown_single_port(adapter->port[i]);
3599 adapter->port[i] = NULL;
3600 }
1acf2318
JBT		 3601
3602 ehea_remove_device_sysfs(dev);
3603
6b08f3ae 3604 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3605 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3606
3607 ehea_destroy_eq(adapter->neq);
1211bb6d 3608 ehea_remove_adapter_mr(adapter);
44c82152 3609 list_del(&adapter->list);
7a291083 3610 kfree(adapter);
44c82152 3611
21eee2dd 3612 ehea_update_firmware_handles();
21eee2dd 3613
7a291083
JBT		 3614 return 0;
3615}
3616
21eee2dd
TK		 3617void ehea_crash_handler(void)
3618{
3619 int i;
3620
3621 if (ehea_fw_handles.arr)
3622 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3623 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3624 ehea_fw_handles.arr[i].fwh,
3625 FORCE_FREE);
3626
3627 if (ehea_bcmc_regs.arr)
3628 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3629 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3630 ehea_bcmc_regs.arr[i].port_id,
3631 ehea_bcmc_regs.arr[i].reg_type,
3632 ehea_bcmc_regs.arr[i].macaddr,
3633 0, H_DEREG_BCMC);
3634}
3635
48cfb14f
HH		 3636static int ehea_mem_notifier(struct notifier_block *nb,
3637 unsigned long action, void *data)
3638{
a7c561f2 3639 int ret = NOTIFY_BAD;
d4f12daf 3640 struct memory_notify *arg = data;
a7c561f2 3641
099473c1 3642 mutex_lock(&dlpar_mem_lock);
a7c561f2 3643
48cfb14f 3644 switch (action) {
d4f12daf 3645 case MEM_CANCEL_OFFLINE:
8c4877a4 3646 pr_info("memory offlining canceled");
d4f12daf
HH		 3647 /* Readd canceled memory block */
3648 case MEM_ONLINE:
8c4877a4 3649 pr_info("memory is going online");
3876732c 3650 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3651 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3652 goto out_unlock;
3d6b892b 3653 ehea_rereg_mrs();
d4f12daf
HH		 3654 break;
3655 case MEM_GOING_OFFLINE:
8c4877a4 3656 pr_info("memory is going offline");
3876732c 3657 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3658 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3659 goto out_unlock;
3d6b892b 3660 ehea_rereg_mrs();
48cfb14f
HH		 3661 break;
3662 default:
3663 break;
3664 }
52e21b1b
JBT		 3665
3666 ehea_update_firmware_handles();
a7c561f2 3667 ret = NOTIFY_OK;
52e21b1b 3668
a7c561f2
TK		 3669out_unlock:
3670 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3671 return ret;
48cfb14f
HH		 3672}
3673
3674static struct notifier_block ehea_mem_nb = {
3675 .notifier_call = ehea_mem_notifier,
3676};
3677
2a6f4e49
JBT		 3678static int ehea_reboot_notifier(struct notifier_block *nb,
3679 unsigned long action, void *unused)
3680{
3681 if (action == SYS_RESTART) {
8c4877a4 3682 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3683 ibmebus_unregister_driver(&ehea_driver);
3684 }
3685 return NOTIFY_DONE;
3686}
3687
3688static struct notifier_block ehea_reboot_nb = {
508d2b5d 3689 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3690};
3691
7a291083
JBT		 3692static int check_module_parm(void)
3693{
3694 int ret = 0;
3695
3696 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3697 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3698 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3699 ret = -EINVAL;
3700 }
3701 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3702 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3703 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3704 ret = -EINVAL;
3705 }
3706 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3707 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3708 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3709 ret = -EINVAL;
3710 }
3711 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3712 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3713 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3714 ret = -EINVAL;
3715 }
3716
3717 return ret;
3718}
3719
4c3ca4da
JBT		 3720static ssize_t ehea_show_capabilities(struct device_driver *drv,
3721 char *buf)
3722{
3723 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3724}
3725
3726static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3727 ehea_show_capabilities, NULL);
3728
7a291083
JBT		 3729int __init ehea_module_init(void)
3730{
3731 int ret;
3732
8c4877a4 3733 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3734
21eee2dd
TK		 3735 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3736 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3737
9f71a568 3738 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3739 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3740
7a291083
JBT		 3741 ret = check_module_parm();
3742 if (ret)
3743 goto out;
44c82152
TK		 3744
3745 ret = ehea_create_busmap();
3746 if (ret)
3747 goto out;
3748
21eee2dd
TK		 3749 ret = register_reboot_notifier(&ehea_reboot_nb);
3750 if (ret)
8c4877a4 3751 pr_info("failed registering reboot notifier\n");
21eee2dd 3752
48cfb14f
HH		 3753 ret = register_memory_notifier(&ehea_mem_nb);
3754 if (ret)
8c4877a4 3755 pr_info("failed registering memory remove notifier\n");
48cfb14f 3756
c061b18d 3757 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3758 if (ret)
8c4877a4 3759 pr_info("failed registering crash handler\n");
2a6f4e49 3760
7a291083 3761 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3762 if (ret) {
8c4877a4 3763 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3764 goto out2;
4c3ca4da
JBT		 3765 }
3766
3767 ret = driver_create_file(&ehea_driver.driver,
3768 &driver_attr_capabilities);
3769 if (ret) {
8c4877a4
JP		 3770 pr_err("failed to register capabilities attribute, ret=%d\n",
3771 ret);
21eee2dd 3772 goto out3;
4c3ca4da 3773 }
7a291083 3774
21eee2dd
TK		 3775 return ret;
3776
3777out3:
3778 ibmebus_unregister_driver(&ehea_driver);
3779out2:
48cfb14f 3780 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3781 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3782 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3783out:
3784 return ret;
3785}
3786
3787static void __exit ehea_module_exit(void)
3788{
21eee2dd
TK		 3789 int ret;
3790
4c3ca4da 3791 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3792 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3793 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3794 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3795 if (ret)
8c4877a4 3796 pr_info("failed unregistering crash handler\n");
48cfb14f 3797 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3798 kfree(ehea_fw_handles.arr);
3799 kfree(ehea_bcmc_regs.arr);
44c82152 3800 ehea_destroy_busmap();
7a291083
JBT		 3801}
3802
3803module_init(ehea_module_init);
3804module_exit(ehea_module_exit);
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