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ehea: Remove force_irq logic in napi poll routine
[deliverable/linux.git] / drivers / net / ethernet / ibm / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
8c4877a4
JP		 29#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
7a291083
JBT		 31#include <linux/in.h>
32#include <linux/ip.h>
33#include <linux/tcp.h>
34#include <linux/udp.h>
35#include <linux/if.h>
36#include <linux/list.h>
5a0e3ad6 37#include <linux/slab.h>
7a291083 38#include <linux/if_ether.h>
2a6f4e49
JBT		 39#include <linux/notifier.h>
40#include <linux/reboot.h>
48cfb14f 41#include <linux/memory.h>
21eee2dd 42#include <asm/kexec.h>
06f89edf 43#include <linux/mutex.h>
268bb0ce 44#include <linux/prefetch.h>
2a6f4e49 45
7a291083
JBT		 46#include <net/ip.h>
47
48#include "ehea.h"
49#include "ehea_qmr.h"
50#include "ehea_phyp.h"
51
52
53MODULE_LICENSE("GPL");
54MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
55MODULE_DESCRIPTION("IBM eServer HEA Driver");
56MODULE_VERSION(DRV_VERSION);
57
58
59static int msg_level = -1;
60static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
61static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
62static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
63static int sq_entries = EHEA_DEF_ENTRIES_SQ;
b9564468 64static int use_mcs = 1;
508d2b5d 65static int use_lro;
d4dc4ec9 66static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 67static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 68static int prop_carrier_state;
7a291083
JBT		 69
70module_param(msg_level, int, 0);
71module_param(rq1_entries, int, 0);
72module_param(rq2_entries, int, 0);
73module_param(rq3_entries, int, 0);
74module_param(sq_entries, int, 0);
8759cf76 75module_param(prop_carrier_state, int, 0);
18604c54 76module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 77module_param(use_lro, int, 0);
78module_param(lro_max_aggr, int, 0);
18604c54 79module_param(num_tx_qps, int, 0);
7a291083 80
18604c54 81MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 82MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 83MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
84 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 85MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
88MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
91MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
94MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
95 "[2^x - 1], x = [6..14]. Default = "
96 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
b9564468
AB		 97MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
98 "Default = 1");
7a291083 99
d4dc4ec9
JBT		 100MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
101 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
102MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
103 "Default = 0");
104
508d2b5d 105static int port_name_cnt;
44c82152 106static LIST_HEAD(adapter_list);
48e4cc77 107static unsigned long ehea_driver_flags;
06f89edf 108static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 109struct ehea_fw_handle_array ehea_fw_handles;
110struct ehea_bcmc_reg_array ehea_bcmc_regs;
111
d1dea38d 112
2dc11581 113static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 114 const struct of_device_id *id);
d1dea38d 115
2dc11581 116static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 117
118static struct of_device_id ehea_device_table[] = {
119 {
120 .name = "lhea",
121 .compatible = "IBM,lhea",
122 },
123 {},
124};
b0afffe8 125MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 126
6b08f3ae 127static struct of_platform_driver ehea_driver = {
4018294b
GL		 128 .driver = {
129 .name = "ehea",
130 .owner = THIS_MODULE,
131 .of_match_table = ehea_device_table,
132 },
d1dea38d
TK		 133 .probe = ehea_probe_adapter,
134 .remove = ehea_remove,
135};
136
508d2b5d
DM		 137void ehea_dump(void *adr, int len, char *msg)
138{
7a291083
JBT		 139 int x;
140 unsigned char *deb = adr;
141 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 142 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
143 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 144 deb += 16;
145 }
146}
147
2f69ae01
JBT		 148void ehea_schedule_port_reset(struct ehea_port *port)
149{
150 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
151 schedule_work(&port->reset_task);
152}
153
21eee2dd
TK		 154static void ehea_update_firmware_handles(void)
155{
156 struct ehea_fw_handle_entry *arr = NULL;
157 struct ehea_adapter *adapter;
158 int num_adapters = 0;
159 int num_ports = 0;
160 int num_portres = 0;
161 int i = 0;
162 int num_fw_handles, k, l;
163
164 /* Determine number of handles */
52e21b1b
JBT		 165 mutex_lock(&ehea_fw_handles.lock);
166
21eee2dd
TK		 167 list_for_each_entry(adapter, &adapter_list, list) {
168 num_adapters++;
169
170 for (k = 0; k < EHEA_MAX_PORTS; k++) {
171 struct ehea_port *port = adapter->port[k];
172
173 if (!port || (port->state != EHEA_PORT_UP))
174 continue;
175
176 num_ports++;
177 num_portres += port->num_def_qps + port->num_add_tx_qps;
178 }
179 }
180
181 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
182 num_ports * EHEA_NUM_PORT_FW_HANDLES +
183 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
184
185 if (num_fw_handles) {
baeb2ffa 186 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 187 if (!arr)
52e21b1b 188 goto out; /* Keep the existing array */
21eee2dd
TK		 189 } else
190 goto out_update;
191
192 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 193 if (num_adapters == 0)
194 break;
195
21eee2dd
TK		 196 for (k = 0; k < EHEA_MAX_PORTS; k++) {
197 struct ehea_port *port = adapter->port[k];
198
8e95a202
JP		 199 if (!port || (port->state != EHEA_PORT_UP) ||
200 (num_ports == 0))
21eee2dd
TK		 201 continue;
202
203 for (l = 0;
204 l < port->num_def_qps + port->num_add_tx_qps;
205 l++) {
206 struct ehea_port_res *pr = &port->port_res[l];
207
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = pr->qp->fw_handle;
210 arr[i].adh = adapter->handle;
211 arr[i++].fwh = pr->send_cq->fw_handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = pr->recv_cq->fw_handle;
214 arr[i].adh = adapter->handle;
215 arr[i++].fwh = pr->eq->fw_handle;
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = pr->send_mr.handle;
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = pr->recv_mr.handle;
220 }
221 arr[i].adh = adapter->handle;
222 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 223 num_ports--;
21eee2dd
TK		 224 }
225
226 arr[i].adh = adapter->handle;
227 arr[i++].fwh = adapter->neq->fw_handle;
228
229 if (adapter->mr.handle) {
230 arr[i].adh = adapter->handle;
231 arr[i++].fwh = adapter->mr.handle;
232 }
52e21b1b 233 num_adapters--;
21eee2dd
TK		 234 }
235
236out_update:
237 kfree(ehea_fw_handles.arr);
238 ehea_fw_handles.arr = arr;
239 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 240out:
241 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 242}
243
244static void ehea_update_bcmc_registrations(void)
245{
52e21b1b 246 unsigned long flags;
21eee2dd
TK		 247 struct ehea_bcmc_reg_entry *arr = NULL;
248 struct ehea_adapter *adapter;
249 struct ehea_mc_list *mc_entry;
250 int num_registrations = 0;
251 int i = 0;
252 int k;
253
52e21b1b
JBT		 254 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
255
21eee2dd
TK		 256 /* Determine number of registrations */
257 list_for_each_entry(adapter, &adapter_list, list)
258 for (k = 0; k < EHEA_MAX_PORTS; k++) {
259 struct ehea_port *port = adapter->port[k];
260
261 if (!port || (port->state != EHEA_PORT_UP))
262 continue;
263
264 num_registrations += 2; /* Broadcast registrations */
265
266 list_for_each_entry(mc_entry, &port->mc_list->list,list)
267 num_registrations += 2;
268 }
269
270 if (num_registrations) {
baeb2ffa 271 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 272 if (!arr)
52e21b1b 273 goto out; /* Keep the existing array */
21eee2dd
TK		 274 } else
275 goto out_update;
276
277 list_for_each_entry(adapter, &adapter_list, list) {
278 for (k = 0; k < EHEA_MAX_PORTS; k++) {
279 struct ehea_port *port = adapter->port[k];
280
281 if (!port || (port->state != EHEA_PORT_UP))
282 continue;
283
52e21b1b
JBT		 284 if (num_registrations == 0)
285 goto out_update;
286
21eee2dd
TK		 287 arr[i].adh = adapter->handle;
288 arr[i].port_id = port->logical_port_id;
289 arr[i].reg_type = EHEA_BCMC_BROADCAST |
290 EHEA_BCMC_UNTAGGED;
291 arr[i++].macaddr = port->mac_addr;
292
293 arr[i].adh = adapter->handle;
294 arr[i].port_id = port->logical_port_id;
295 arr[i].reg_type = EHEA_BCMC_BROADCAST |
296 EHEA_BCMC_VLANID_ALL;
297 arr[i++].macaddr = port->mac_addr;
52e21b1b 298 num_registrations -= 2;
21eee2dd
TK		 299
300 list_for_each_entry(mc_entry,
301 &port->mc_list->list, list) {
52e21b1b
JBT		 302 if (num_registrations == 0)
303 goto out_update;
304
21eee2dd
TK		 305 arr[i].adh = adapter->handle;
306 arr[i].port_id = port->logical_port_id;
307 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
308 EHEA_BCMC_MULTICAST |
309 EHEA_BCMC_UNTAGGED;
310 arr[i++].macaddr = mc_entry->macaddr;
311
312 arr[i].adh = adapter->handle;
313 arr[i].port_id = port->logical_port_id;
314 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
315 EHEA_BCMC_MULTICAST |
316 EHEA_BCMC_VLANID_ALL;
317 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 318 num_registrations -= 2;
21eee2dd
TK		 319 }
320 }
321 }
322
323out_update:
324 kfree(ehea_bcmc_regs.arr);
325 ehea_bcmc_regs.arr = arr;
326 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 327out:
328 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 329}
330
7a291083
JBT		 331static struct net_device_stats *ehea_get_stats(struct net_device *dev)
332{
333 struct ehea_port *port = netdev_priv(dev);
334 struct net_device_stats *stats = &port->stats;
2aefcad8 335 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 336 int i;
337
2aefcad8 338 for (i = 0; i < port->num_def_qps; i++) {
339 rx_packets += port->port_res[i].rx_packets;
340 rx_bytes += port->port_res[i].rx_bytes;
341 }
342
343 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
344 tx_packets += port->port_res[i].tx_packets;
345 tx_bytes += port->port_res[i].tx_bytes;
346 }
347
348 stats->tx_packets = tx_packets;
349 stats->rx_bytes = rx_bytes;
350 stats->tx_bytes = tx_bytes;
351 stats->rx_packets = rx_packets;
352
353 return &port->stats;
354}
355
356static void ehea_update_stats(struct work_struct *work)
357{
358 struct ehea_port *port =
359 container_of(work, struct ehea_port, stats_work.work);
360 struct net_device *dev = port->netdev;
361 struct net_device_stats *stats = &port->stats;
362 struct hcp_ehea_port_cb2 *cb2;
363 u64 hret;
7a291083 364
3d8009c7 365 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 366 if (!cb2) {
2aefcad8 367 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
368 goto resched;
7a291083
JBT		 369 }
370
371 hret = ehea_h_query_ehea_port(port->adapter->handle,
372 port->logical_port_id,
373 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
374 if (hret != H_SUCCESS) {
8c4877a4 375 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 376 goto out_herr;
377 }
378
379 if (netif_msg_hw(port))
380 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
381
7a291083
JBT		 382 stats->multicast = cb2->rxmcp;
383 stats->rx_errors = cb2->rxuerr;
7a291083
JBT		 384
385out_herr:
3faf2693 386 free_page((unsigned long)cb2);
2aefcad8 387resched:
388 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
7a291083
JBT		 389}
390
391static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
392{
393 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
394 struct net_device *dev = pr->port->netdev;
395 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 396 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
397 int adder = 0;
7a291083
JBT		 398 int i;
399
2c69448b
JBT		 400 pr->rq1_skba.os_skbs = 0;
401
402 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 403 if (nr_of_wqes > 0)
404 pr->rq1_skba.index = index;
2c69448b 405 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 406 return;
2c69448b 407 }
7a291083 408
2c69448b 409 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 410 if (!skb_arr_rq1[index]) {
411 skb_arr_rq1[index] = netdev_alloc_skb(dev,
412 EHEA_L_PKT_SIZE);
413 if (!skb_arr_rq1[index]) {
8c4877a4 414 netdev_info(dev, "Unable to allocate enough skb in the array\n");
2c69448b 415 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 416 break;
417 }
418 }
419 index--;
420 index &= max_index_mask;
2c69448b 421 adder++;
7a291083 422 }
2c69448b
JBT		 423
424 if (adder == 0)
425 return;
426
7a291083 427 /* Ring doorbell */
2c69448b 428 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 429}
430
e2878806 431static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 432{
7a291083
JBT		 433 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
434 struct net_device *dev = pr->port->netdev;
435 int i;
436
5c7e57f7 437 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 438 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 439 return;
440 }
441
442 for (i = 0; i < nr_rq1a; i++) {
7a291083 443 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
5c7e57f7 444 if (!skb_arr_rq1[i]) {
8c4877a4 445 netdev_info(dev, "Not enough memory to allocate skb array\n");
e2878806 446 break;
5c7e57f7 447 }
7a291083
JBT		 448 }
449 /* Ring doorbell */
f76957fc 450 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 451}
452
453static int ehea_refill_rq_def(struct ehea_port_res *pr,
454 struct ehea_q_skb_arr *q_skba, int rq_nr,
455 int num_wqes, int wqe_type, int packet_size)
456{
457 struct net_device *dev = pr->port->netdev;
458 struct ehea_qp *qp = pr->qp;
459 struct sk_buff **skb_arr = q_skba->arr;
460 struct ehea_rwqe *rwqe;
461 int i, index, max_index_mask, fill_wqes;
2c69448b 462 int adder = 0;
7a291083
JBT		 463 int ret = 0;
464
465 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 466 q_skba->os_skbs = 0;
7a291083 467
2c69448b
JBT		 468 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
469 q_skba->os_skbs = fill_wqes;
7a291083 470 return ret;
2c69448b 471 }
7a291083
JBT		 472
473 index = q_skba->index;
474 max_index_mask = q_skba->len - 1;
475 for (i = 0; i < fill_wqes; i++) {
2c69448b 476 u64 tmp_addr;
89d71a66
ED		 477 struct sk_buff *skb;
478
479 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 480 if (!skb) {
7a291083 481 q_skba->os_skbs = fill_wqes - i;
e2878806 482 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 483 netdev_info(pr->port->netdev,
484 "rq%i ran dry - no mem for skb\n",
485 rq_nr);
e2878806
TK		 486 ret = -ENOMEM;
487 }
7a291083
JBT		 488 break;
489 }
7a291083
JBT		 490
491 skb_arr[index] = skb;
2c69448b
JBT		 492 tmp_addr = ehea_map_vaddr(skb->data);
493 if (tmp_addr == -1) {
494 dev_kfree_skb(skb);
495 q_skba->os_skbs = fill_wqes - i;
496 ret = 0;
497 break;
498 }
7a291083
JBT		 499
500 rwqe = ehea_get_next_rwqe(qp, rq_nr);
501 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 502 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 503 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 504 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 505 rwqe->sg_list[0].len = packet_size;
506 rwqe->data_segments = 1;
507
508 index++;
509 index &= max_index_mask;
2c69448b 510 adder++;
7a291083 511 }
44c82152 512
7a291083 513 q_skba->index = index;
2c69448b
JBT		 514 if (adder == 0)
515 goto out;
7a291083
JBT		 516
517 /* Ring doorbell */
518 iosync();
519 if (rq_nr == 2)
2c69448b 520 ehea_update_rq2a(pr->qp, adder);
7a291083 521 else
2c69448b 522 ehea_update_rq3a(pr->qp, adder);
44c82152 523out:
7a291083
JBT		 524 return ret;
525}
526
527
528static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
529{
530 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
531 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 532 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 533}
534
535
536static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
537{
538 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
539 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 540 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 541}
542
543static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
544{
545 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
546 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
547 return 0;
548 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
549 (cqe->header_length == 0))
550 return 0;
551 return -EINVAL;
552}
553
554static inline void ehea_fill_skb(struct net_device *dev,
b9564468
AB		 555 struct sk_buff *skb, struct ehea_cqe *cqe,
556 struct ehea_port_res *pr)
7a291083
JBT		 557{
558 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
559
560 skb_put(skb, length);
7a291083 561 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 562
563 /* The packet was not an IPV4 packet so a complemented checksum was
564 calculated. The value is found in the Internet Checksum field. */
565 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
566 skb->ip_summed = CHECKSUM_COMPLETE;
567 skb->csum = csum_unfold(~cqe->inet_checksum_value);
568 } else
569 skb->ip_summed = CHECKSUM_UNNECESSARY;
b9564468
AB		 570
571 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
7a291083
JBT		 572}
573
574static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
575 int arr_len,
576 struct ehea_cqe *cqe)
577{
578 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
579 struct sk_buff *skb;
580 void *pref;
581 int x;
582
583 x = skb_index + 1;
584 x &= (arr_len - 1);
585
586 pref = skb_array[x];
0b2febf3
HH		 587 if (pref) {
588 prefetchw(pref);
589 prefetchw(pref + EHEA_CACHE_LINE);
590
591 pref = (skb_array[x]->data);
592 prefetch(pref);
593 prefetch(pref + EHEA_CACHE_LINE);
594 prefetch(pref + EHEA_CACHE_LINE * 2);
595 prefetch(pref + EHEA_CACHE_LINE * 3);
596 }
597
7a291083
JBT		 598 skb = skb_array[skb_index];
599 skb_array[skb_index] = NULL;
600 return skb;
601}
602
603static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
604 int arr_len, int wqe_index)
605{
606 struct sk_buff *skb;
607 void *pref;
608 int x;
609
610 x = wqe_index + 1;
611 x &= (arr_len - 1);
612
613 pref = skb_array[x];
0b2febf3
HH		 614 if (pref) {
615 prefetchw(pref);
616 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 617
0b2febf3
HH		 618 pref = (skb_array[x]->data);
619 prefetchw(pref);
620 prefetchw(pref + EHEA_CACHE_LINE);
621 }
7a291083
JBT		 622
623 skb = skb_array[wqe_index];
624 skb_array[wqe_index] = NULL;
625 return skb;
626}
627
628static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
629 struct ehea_cqe *cqe, int *processed_rq2,
630 int *processed_rq3)
631{
632 struct sk_buff *skb;
633
acbddb59
JBT		 634 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
635 pr->p_stats.err_tcp_cksum++;
636 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
637 pr->p_stats.err_ip_cksum++;
638 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
639 pr->p_stats.err_frame_crc++;
640
7a291083
JBT		 641 if (rq == 2) {
642 *processed_rq2 += 1;
643 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
644 dev_kfree_skb(skb);
645 } else if (rq == 3) {
646 *processed_rq3 += 1;
647 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
648 dev_kfree_skb(skb);
649 }
650
651 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 652 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 653 pr_err("Critical receive error for QP %d. Resetting port.\n",
654 pr->qp->init_attr.qp_nr);
58dd8258
TK		 655 ehea_dump(cqe, sizeof(*cqe), "CQE");
656 }
2f69ae01 657 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 658 return 1;
659 }
660
661 return 0;
662}
663
d4dc4ec9
JBT		 664static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
665 void **tcph, u64 *hdr_flags, void *priv)
666{
667 struct ehea_cqe *cqe = priv;
668 unsigned int ip_len;
669 struct iphdr *iph;
670
671 /* non tcp/udp packets */
672 if (!cqe->header_length)
673 return -1;
674
675 /* non tcp packet */
676 skb_reset_network_header(skb);
677 iph = ip_hdr(skb);
678 if (iph->protocol != IPPROTO_TCP)
679 return -1;
680
681 ip_len = ip_hdrlen(skb);
682 skb_set_transport_header(skb, ip_len);
683 *tcph = tcp_hdr(skb);
684
685 /* check if ip header and tcp header are complete */
3ff2cd23 686 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 687 return -1;
688
689 *hdr_flags = LRO_IPV4 | LRO_TCP;
690 *iphdr = iph;
691
692 return 0;
693}
694
695static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
696 struct sk_buff *skb)
697{
b4950095
JP		 698 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
699 __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
700
701 if (skb->dev->features & NETIF_F_LRO)
702 lro_receive_skb(&pr->lro_mgr, skb, cqe);
703 else
704 netif_receive_skb(skb);
d4dc4ec9
JBT		 705}
706
bea3348e
SH		 707static int ehea_proc_rwqes(struct net_device *dev,
708 struct ehea_port_res *pr,
709 int budget)
7a291083 710{
18604c54 711 struct ehea_port *port = pr->port;
7a291083
JBT		 712 struct ehea_qp *qp = pr->qp;
713 struct ehea_cqe *cqe;
714 struct sk_buff *skb;
715 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
716 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
717 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
718 int skb_arr_rq1_len = pr->rq1_skba.len;
719 int skb_arr_rq2_len = pr->rq2_skba.len;
720 int skb_arr_rq3_len = pr->rq3_skba.len;
721 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 722 u64 processed_bytes = 0;
bea3348e 723 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 724
725 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
726 last_wqe_index = 0;
7a291083 727
7a291083 728 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 729 while ((processed < budget) && cqe) {
7a291083
JBT		 730 ehea_inc_rq1(qp);
731 processed_rq1++;
732 processed++;
7a291083
JBT		 733 if (netif_msg_rx_status(port))
734 ehea_dump(cqe, sizeof(*cqe), "CQE");
735
736 last_wqe_index = wqe_index;
737 rmb();
738 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 739 if (rq == 1) {
740 /* LL RQ1 */
7a291083
JBT		 741 skb = get_skb_by_index_ll(skb_arr_rq1,
742 skb_arr_rq1_len,
743 wqe_index);
744 if (unlikely(!skb)) {
782615ae 745 netif_info(port, rx_err, dev,
8c4877a4 746 "LL rq1: skb=NULL\n");
18604c54 747
bea3348e 748 skb = netdev_alloc_skb(dev,
7a291083 749 EHEA_L_PKT_SIZE);
5c7e57f7 750 if (!skb) {
782615ae 751 netdev_err(dev, "Not enough memory to allocate skb\n");
7a291083 752 break;
5c7e57f7 753 }
7a291083 754 }
508d2b5d 755 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 756 cqe->num_bytes_transfered - 4);
b9564468 757 ehea_fill_skb(dev, skb, cqe, pr);
508d2b5d
DM		 758 } else if (rq == 2) {
759 /* RQ2 */
7a291083
JBT		 760 skb = get_skb_by_index(skb_arr_rq2,
761 skb_arr_rq2_len, cqe);
762 if (unlikely(!skb)) {
8c4877a4
JP		 763 netif_err(port, rx_err, dev,
764 "rq2: skb=NULL\n");
7a291083
JBT		 765 break;
766 }
b9564468 767 ehea_fill_skb(dev, skb, cqe, pr);
7a291083 768 processed_rq2++;
508d2b5d
DM		 769 } else {
770 /* RQ3 */
7a291083
JBT		 771 skb = get_skb_by_index(skb_arr_rq3,
772 skb_arr_rq3_len, cqe);
773 if (unlikely(!skb)) {
8c4877a4
JP		 774 netif_err(port, rx_err, dev,
775 "rq3: skb=NULL\n");
7a291083
JBT		 776 break;
777 }
b9564468 778 ehea_fill_skb(dev, skb, cqe, pr);
7a291083
JBT		 779 processed_rq3++;
780 }
781
ce45b873 782 processed_bytes += skb->len;
d4dc4ec9 783 ehea_proc_skb(pr, cqe, skb);
18604c54 784 } else {
acbddb59 785 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 786 port_reset = ehea_treat_poll_error(pr, rq, cqe,
787 &processed_rq2,
788 &processed_rq3);
789 if (port_reset)
790 break;
791 }
792 cqe = ehea_poll_rq1(qp, &wqe_index);
793 }
c7757fdb 794 if (dev->features & NETIF_F_LRO)
d4dc4ec9 795 lro_flush_all(&pr->lro_mgr);
7a291083 796
7a291083 797 pr->rx_packets += processed;
ce45b873 798 pr->rx_bytes += processed_bytes;
7a291083
JBT		 799
800 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
801 ehea_refill_rq2(pr, processed_rq2);
802 ehea_refill_rq3(pr, processed_rq3);
803
bea3348e 804 return processed;
7a291083
JBT		 805}
806
2928db4c
AD		 807#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
808
809static void reset_sq_restart_flag(struct ehea_port *port)
810{
811 int i;
812
813 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
814 struct ehea_port_res *pr = &port->port_res[i];
815 pr->sq_restart_flag = 0;
816 }
a8bb69f7 817 wake_up(&port->restart_wq);
2928db4c
AD		 818}
819
820static void check_sqs(struct ehea_port *port)
821{
822 struct ehea_swqe *swqe;
823 int swqe_index;
824 int i, k;
825
826 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
827 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 828 int ret;
2928db4c
AD		 829 k = 0;
830 swqe = ehea_get_swqe(pr->qp, &swqe_index);
831 memset(swqe, 0, SWQE_HEADER_SIZE);
832 atomic_dec(&pr->swqe_avail);
833
834 swqe->tx_control |= EHEA_SWQE_PURGE;
835 swqe->wr_id = SWQE_RESTART_CHECK;
836 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
837 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
838 swqe->immediate_data_length = 80;
839
840 ehea_post_swqe(pr->qp, swqe);
841
a8bb69f7
BL		 842 ret = wait_event_timeout(port->restart_wq,
843 pr->sq_restart_flag == 0,
844 msecs_to_jiffies(100));
845
846 if (!ret) {
8c4877a4 847 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 848 ehea_schedule_port_reset(pr->port);
849 return;
2928db4c
AD		 850 }
851 }
2928db4c
AD		 852}
853
854
18604c54 855static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 856{
acbddb59 857 struct sk_buff *skb;
7a291083
JBT		 858 struct ehea_cq *send_cq = pr->send_cq;
859 struct ehea_cqe *cqe;
18604c54 860 int quota = my_quota;
7a291083
JBT		 861 int cqe_counter = 0;
862 int swqe_av = 0;
acbddb59 863 int index;
b9564468
AB		 864 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
865 pr - &pr->port->port_res[0]);
7a291083 866
18604c54 867 cqe = ehea_poll_cq(send_cq);
508d2b5d 868 while (cqe && (quota > 0)) {
18604c54
JBT		 869 ehea_inc_cq(send_cq);
870
7a291083
JBT		 871 cqe_counter++;
872 rmb();
2928db4c
AD		 873
874 if (cqe->wr_id == SWQE_RESTART_CHECK) {
875 pr->sq_restart_flag = 1;
876 swqe_av++;
877 break;
878 }
879
7a291083 880 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 881 pr_err("Bad send completion status=0x%04X\n",
882 cqe->status);
ea96ceac 883
7a291083
JBT		 884 if (netif_msg_tx_err(pr->port))
885 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 886
887 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 888 pr_err("Resetting port\n");
ea96ceac
TK		 889 ehea_schedule_port_reset(pr->port);
890 break;
891 }
7a291083
JBT		 892 }
893
894 if (netif_msg_tx_done(pr->port))
895 ehea_dump(cqe, sizeof(*cqe), "CQE");
896
897 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 898 == EHEA_SWQE2_TYPE)) {
899
900 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
901 skb = pr->sq_skba.arr[index];
902 dev_kfree_skb(skb);
903 pr->sq_skba.arr[index] = NULL;
904 }
7a291083
JBT		 905
906 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
907 quota--;
18604c54
JBT		 908
909 cqe = ehea_poll_cq(send_cq);
ee289b64 910 }
7a291083
JBT		 911
912 ehea_update_feca(send_cq, cqe_counter);
913 atomic_add(swqe_av, &pr->swqe_avail);
914
b9564468
AB		 915 if (unlikely(netif_tx_queue_stopped(txq) &&
916 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
917 __netif_tx_lock(txq, smp_processor_id());
918 if (netif_tx_queue_stopped(txq) &&
919 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
920 netif_tx_wake_queue(txq);
921 __netif_tx_unlock(txq);
7a291083 922 }
b9564468 923
5b27d427 924 wake_up(&pr->port->swqe_avail_wq);
7a291083 925
18604c54 926 return cqe;
7a291083
JBT		 927}
928
bea3348e 929#define EHEA_POLL_MAX_CQES 65535
18604c54 930
bea3348e 931static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 932{
508d2b5d
DM		 933 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
934 napi);
bea3348e 935 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 936 struct ehea_cqe *cqe;
937 struct ehea_cqe *cqe_skb = NULL;
222ca96b 938 int wqe_index;
bea3348e 939 int rx = 0;
18604c54 940
bea3348e 941 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
222ca96b 942 rx += ehea_proc_rwqes(dev, pr, budget - rx);
bea3348e 943
222ca96b 944 while (rx != budget) {
288379f0 945 napi_complete(napi);
18604c54
JBT		 946 ehea_reset_cq_ep(pr->recv_cq);
947 ehea_reset_cq_ep(pr->send_cq);
948 ehea_reset_cq_n1(pr->recv_cq);
949 ehea_reset_cq_n1(pr->send_cq);
a91fb143 950 rmb();
18604c54
JBT		 951 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
952 cqe_skb = ehea_poll_cq(pr->send_cq);
953
e542aa6b 954 if (!cqe && !cqe_skb)
bea3348e 955 return rx;
18604c54 956
288379f0 957 if (!napi_reschedule(napi))
bea3348e 958 return rx;
18604c54 959
bea3348e
SH		 960 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
961 rx += ehea_proc_rwqes(dev, pr, budget - rx);
962 }
e542aa6b 963
bea3348e 964 return rx;
7a291083
JBT		 965}
966
8d22c971
JBT		 967#ifdef CONFIG_NET_POLL_CONTROLLER
968static void ehea_netpoll(struct net_device *dev)
969{
970 struct ehea_port *port = netdev_priv(dev);
bea3348e 971 int i;
8d22c971 972
bea3348e 973 for (i = 0; i < port->num_def_qps; i++)
288379f0 974 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 975}
976#endif
977
7d12e780 978static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 979{
980 struct ehea_port_res *pr = param;
18604c54 981
288379f0 982 napi_schedule(&pr->napi);
18604c54 983
7a291083
JBT		 984 return IRQ_HANDLED;
985}
986
7d12e780 987static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 988{
989 struct ehea_port *port = param;
990 struct ehea_eqe *eqe;
d2db9eea 991 struct ehea_qp *qp;
7a291083 992 u32 qp_token;
ea96ceac
TK		 993 u64 resource_type, aer, aerr;
994 int reset_port = 0;
7a291083
JBT		 995
996 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 997
7a291083 998 while (eqe) {
7a291083 999 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 1000 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
1001 eqe->entry, qp_token);
d2db9eea
JBT		 1002
1003 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 1004
1005 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1006 &aer, &aerr);
1007
1008 if (resource_type == EHEA_AER_RESTYPE_QP) {
1009 if ((aer & EHEA_AER_RESET_MASK) ||
1010 (aerr & EHEA_AERR_RESET_MASK))
1011 reset_port = 1;
1012 } else
1013 reset_port = 1; /* Reset in case of CQ or EQ error */
1014
bb3a6449 1015 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 1016 }
1017
ea96ceac 1018 if (reset_port) {
8c4877a4 1019 pr_err("Resetting port\n");
ea96ceac
TK		 1020 ehea_schedule_port_reset(port);
1021 }
d2db9eea 1022
7a291083
JBT		 1023 return IRQ_HANDLED;
1024}
1025
1026static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1027 int logical_port)
1028{
1029 int i;
1030
1acf2318 1031 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1032 if (adapter->port[i])
d1d25aab 1033 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1034 return adapter->port[i];
7a291083
JBT		 1035 return NULL;
1036}
1037
1038int ehea_sense_port_attr(struct ehea_port *port)
1039{
1040 int ret;
1041 u64 hret;
1042 struct hcp_ehea_port_cb0 *cb0;
1043
508d2b5d 1044 /* may be called via ehea_neq_tasklet() */
3faf2693 1045 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1046 if (!cb0) {
8c4877a4 1047 pr_err("no mem for cb0\n");
7a291083
JBT		 1048 ret = -ENOMEM;
1049 goto out;
1050 }
1051
1052 hret = ehea_h_query_ehea_port(port->adapter->handle,
1053 port->logical_port_id, H_PORT_CB0,
1054 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1055 cb0);
1056 if (hret != H_SUCCESS) {
1057 ret = -EIO;
1058 goto out_free;
1059 }
1060
1061 /* MAC address */
1062 port->mac_addr = cb0->port_mac_addr << 16;
1063
508d2b5d 1064 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1065 ret = -EADDRNOTAVAIL;
1066 goto out_free;
1067 }
1068
1069 /* Port speed */
1070 switch (cb0->port_speed) {
1071 case H_SPEED_10M_H:
1072 port->port_speed = EHEA_SPEED_10M;
1073 port->full_duplex = 0;
1074 break;
1075 case H_SPEED_10M_F:
1076 port->port_speed = EHEA_SPEED_10M;
1077 port->full_duplex = 1;
1078 break;
1079 case H_SPEED_100M_H:
1080 port->port_speed = EHEA_SPEED_100M;
1081 port->full_duplex = 0;
1082 break;
1083 case H_SPEED_100M_F:
1084 port->port_speed = EHEA_SPEED_100M;
1085 port->full_duplex = 1;
1086 break;
1087 case H_SPEED_1G_F:
1088 port->port_speed = EHEA_SPEED_1G;
1089 port->full_duplex = 1;
1090 break;
1091 case H_SPEED_10G_F:
1092 port->port_speed = EHEA_SPEED_10G;
1093 port->full_duplex = 1;
1094 break;
1095 default:
1096 port->port_speed = 0;
1097 port->full_duplex = 0;
1098 break;
1099 }
1100
e919b593 1101 port->autoneg = 1;
18604c54 1102 port->num_mcs = cb0->num_default_qps;
e919b593 1103
7a291083 1104 /* Number of default QPs */
18604c54
JBT		 1105 if (use_mcs)
1106 port->num_def_qps = cb0->num_default_qps;
1107 else
1108 port->num_def_qps = 1;
7a291083
JBT		 1109
1110 if (!port->num_def_qps) {
1111 ret = -EINVAL;
1112 goto out_free;
1113 }
1114
18604c54
JBT		 1115 port->num_tx_qps = num_tx_qps;
1116
1117 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1118 port->num_add_tx_qps = 0;
1119 else
18604c54 1120 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1121
1122 ret = 0;
1123out_free:
1124 if (ret || netif_msg_probe(port))
1125 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1126 free_page((unsigned long)cb0);
7a291083
JBT		 1127out:
1128 return ret;
1129}
1130
1131int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1132{
1133 struct hcp_ehea_port_cb4 *cb4;
1134 u64 hret;
1135 int ret = 0;
1136
3faf2693 1137 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1138 if (!cb4) {
8c4877a4 1139 pr_err("no mem for cb4\n");
7a291083
JBT		 1140 ret = -ENOMEM;
1141 goto out;
1142 }
1143
1144 cb4->port_speed = port_speed;
1145
1146 netif_carrier_off(port->netdev);
1147
1148 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1149 port->logical_port_id,
1150 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1151 if (hret == H_SUCCESS) {
1152 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1153
1154 hret = ehea_h_query_ehea_port(port->adapter->handle,
1155 port->logical_port_id,
1156 H_PORT_CB4, H_PORT_CB4_SPEED,
1157 cb4);
1158 if (hret == H_SUCCESS) {
1159 switch (cb4->port_speed) {
1160 case H_SPEED_10M_H:
1161 port->port_speed = EHEA_SPEED_10M;
1162 port->full_duplex = 0;
1163 break;
1164 case H_SPEED_10M_F:
1165 port->port_speed = EHEA_SPEED_10M;
1166 port->full_duplex = 1;
1167 break;
1168 case H_SPEED_100M_H:
1169 port->port_speed = EHEA_SPEED_100M;
1170 port->full_duplex = 0;
1171 break;
1172 case H_SPEED_100M_F:
1173 port->port_speed = EHEA_SPEED_100M;
1174 port->full_duplex = 1;
1175 break;
1176 case H_SPEED_1G_F:
1177 port->port_speed = EHEA_SPEED_1G;
1178 port->full_duplex = 1;
1179 break;
1180 case H_SPEED_10G_F:
1181 port->port_speed = EHEA_SPEED_10G;
1182 port->full_duplex = 1;
1183 break;
1184 default:
1185 port->port_speed = 0;
1186 port->full_duplex = 0;
1187 break;
1188 }
1189 } else {
8c4877a4 1190 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1191 ret = -EIO;
1192 }
1193 } else {
1194 if (hret == H_AUTHORITY) {
8c4877a4 1195 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1196 ret = -EPERM;
1197 } else {
1198 ret = -EIO;
8c4877a4 1199 pr_err("Failed setting port speed\n");
7a291083
JBT		 1200 }
1201 }
8759cf76
JBT		 1202 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1203 netif_carrier_on(port->netdev);
1204
3faf2693 1205 free_page((unsigned long)cb4);
7a291083
JBT		 1206out:
1207 return ret;
1208}
1209
1210static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1211{
1212 int ret;
1213 u8 ec;
1214 u8 portnum;
1215 struct ehea_port *port;
8c4877a4 1216 struct net_device *dev;
7a291083
JBT		 1217
1218 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1219 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1220 port = ehea_get_port(adapter, portnum);
8c4877a4 1221 dev = port->netdev;
7a291083
JBT		 1222
1223 switch (ec) {
1224 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1225
1226 if (!port) {
8c4877a4 1227 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1228 break;
1229 }
1230
1231 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1232 if (!netif_carrier_ok(dev)) {
1e1675cc 1233 ret = ehea_sense_port_attr(port);
7a291083 1234 if (ret) {
8c4877a4 1235 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1236 break;
1237 }
1238
8c4877a4
JP		 1239 netif_info(port, link, dev,
1240 "Logical port up: %dMbps %s Duplex\n",
1241 port->port_speed,
1242 port->full_duplex == 1 ?
1243 "Full" : "Half");
7a291083 1244
8c4877a4
JP		 1245 netif_carrier_on(dev);
1246 netif_wake_queue(dev);
7a291083
JBT		 1247 }
1248 } else
8c4877a4
JP		 1249 if (netif_carrier_ok(dev)) {
1250 netif_info(port, link, dev,
1251 "Logical port down\n");
1252 netif_carrier_off(dev);
b9564468 1253 netif_tx_disable(dev);
7a291083
JBT		 1254 }
1255
1256 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1257 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1258 netif_info(port, link, dev,
1259 "Physical port up\n");
8759cf76 1260 if (prop_carrier_state)
8c4877a4 1261 netif_carrier_on(dev);
7a291083 1262 } else {
8759cf76 1263 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1264 netif_info(port, link, dev,
1265 "Physical port down\n");
8759cf76 1266 if (prop_carrier_state)
8c4877a4 1267 netif_carrier_off(dev);
7a291083
JBT		 1268 }
1269
1270 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1271 netdev_info(dev,
1272 "External switch port is primary port\n");
7a291083 1273 else
8c4877a4
JP		 1274 netdev_info(dev,
1275 "External switch port is backup port\n");
7a291083
JBT		 1276
1277 break;
1278 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1279 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1280 break;
1281 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1282 netdev_info(dev, "Port malfunction\n");
1283 netif_carrier_off(dev);
b9564468 1284 netif_tx_disable(dev);
7a291083
JBT		 1285 break;
1286 default:
8c4877a4 1287 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
7a291083
JBT		 1288 break;
1289 }
1290}
1291
1292static void ehea_neq_tasklet(unsigned long data)
1293{
508d2b5d 1294 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1295 struct ehea_eqe *eqe;
1296 u64 event_mask;
1297
1298 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1299 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1300
1301 while (eqe) {
8c4877a4 1302 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1303 ehea_parse_eqe(adapter, eqe->entry);
1304 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1305 pr_debug("next eqe=%p\n", eqe);
7a291083
JBT		 1306 }
1307
1308 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1309 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1310 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1311
1312 ehea_h_reset_events(adapter->handle,
1313 adapter->neq->fw_handle, event_mask);
1314}
1315
7d12e780 1316static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1317{
1318 struct ehea_adapter *adapter = param;
1319 tasklet_hi_schedule(&adapter->neq_tasklet);
1320 return IRQ_HANDLED;
1321}
1322
1323
1324static int ehea_fill_port_res(struct ehea_port_res *pr)
1325{
1326 int ret;
1327 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1328
f76957fc 1329 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1330
e2878806 1331 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1332
1333 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1334
1335 return ret;
1336}
1337
1338static int ehea_reg_interrupts(struct net_device *dev)
1339{
1340 struct ehea_port *port = netdev_priv(dev);
1341 struct ehea_port_res *pr;
1342 int i, ret;
1343
7a291083
JBT		 1344
1345 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1346 dev->name);
1347
6b08f3ae 1348 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1349 ehea_qp_aff_irq_handler,
38515e90 1350 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1351 if (ret) {
8c4877a4
JP		 1352 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1353 port->qp_eq->attr.ist1);
7a291083
JBT		 1354 goto out_free_qpeq;
1355 }
1356
8c4877a4
JP		 1357 netif_info(port, ifup, dev,
1358 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1359 port->qp_eq->attr.ist1);
7a291083 1360
18604c54 1361
7a291083
JBT		 1362 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1363 pr = &port->port_res[i];
1364 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1365 "%s-queue%d", dev->name, i);
6b08f3ae 1366 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1367 ehea_recv_irq_handler,
38515e90 1368 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1369 pr);
1370 if (ret) {
8c4877a4
JP		 1371 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1372 i, pr->eq->attr.ist1);
7a291083
JBT		 1373 goto out_free_req;
1374 }
8c4877a4
JP		 1375 netif_info(port, ifup, dev,
1376 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1377 pr->eq->attr.ist1, i);
7a291083
JBT		 1378 }
1379out:
1380 return ret;
1381
18604c54 1382
7a291083
JBT		 1383out_free_req:
1384 while (--i >= 0) {
18604c54 1385 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1386 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1387 }
18604c54 1388
7a291083 1389out_free_qpeq:
6b08f3ae 1390 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1391 i = port->num_def_qps;
18604c54 1392
7a291083 1393 goto out;
18604c54 1394
7a291083
JBT		 1395}
1396
1397static void ehea_free_interrupts(struct net_device *dev)
1398{
1399 struct ehea_port *port = netdev_priv(dev);
1400 struct ehea_port_res *pr;
1401 int i;
1402
1403 /* send */
18604c54 1404
7a291083
JBT		 1405 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1406 pr = &port->port_res[i];
6b08f3ae 1407 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1408 netif_info(port, intr, dev,
1409 "free send irq for res %d with handle 0x%X\n",
1410 i, pr->eq->attr.ist1);
7a291083
JBT		 1411 }
1412
1413 /* associated events */
6b08f3ae 1414 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1415 netif_info(port, intr, dev,
1416 "associated event interrupt for handle 0x%X freed\n",
1417 port->qp_eq->attr.ist1);
7a291083
JBT		 1418}
1419
1420static int ehea_configure_port(struct ehea_port *port)
1421{
1422 int ret, i;
1423 u64 hret, mask;
1424 struct hcp_ehea_port_cb0 *cb0;
1425
1426 ret = -ENOMEM;
3faf2693 1427 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1428 if (!cb0)
1429 goto out;
1430
1431 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1432 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1433 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1434 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1435 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1436 PXLY_RC_VLAN_FILTER)
1437 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1438
18604c54
JBT		 1439 for (i = 0; i < port->num_mcs; i++)
1440 if (use_mcs)
1441 cb0->default_qpn_arr[i] =
1442 port->port_res[i].qp->init_attr.qp_nr;
1443 else
1444 cb0->default_qpn_arr[i] =
1445 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1446
7a291083
JBT		 1447 if (netif_msg_ifup(port))
1448 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1449
1450 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1451 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1452
1453 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1454 port->logical_port_id,
1455 H_PORT_CB0, mask, cb0);
1456 ret = -EIO;
1457 if (hret != H_SUCCESS)
1458 goto out_free;
1459
1460 ret = 0;
1461
1462out_free:
3faf2693 1463 free_page((unsigned long)cb0);
7a291083
JBT		 1464out:
1465 return ret;
1466}
1467
e542aa6b 1468int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1469{
e542aa6b 1470 int ret;
7a291083
JBT		 1471 struct ehea_adapter *adapter = pr->port->adapter;
1472
e542aa6b
JBT		 1473 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1474 if (ret)
7a291083
JBT		 1475 goto out;
1476
e542aa6b
JBT		 1477 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1478 if (ret)
1479 goto out_free;
7a291083
JBT		 1480
1481 return 0;
1482
e542aa6b
JBT		 1483out_free:
1484 ehea_rem_mr(&pr->send_mr);
7a291083 1485out:
8c4877a4 1486 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1487 return -EIO;
1488}
1489
e542aa6b 1490int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1491{
8e95a202
JP		 1492 if ((ehea_rem_mr(&pr->send_mr)) ||
1493 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1494 return -EIO;
1495 else
1496 return 0;
7a291083
JBT		 1497}
1498
1499static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1500{
508d2b5d 1501 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1502
89bf67f1 1503 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1504 if (!q_skba->arr)
1505 return -ENOMEM;
1506
7a291083
JBT		 1507 q_skba->len = max_q_entries;
1508 q_skba->index = 0;
1509 q_skba->os_skbs = 0;
1510
1511 return 0;
1512}
1513
1514static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1515 struct port_res_cfg *pr_cfg, int queue_token)
1516{
1517 struct ehea_adapter *adapter = port->adapter;
1518 enum ehea_eq_type eq_type = EHEA_EQ;
1519 struct ehea_qp_init_attr *init_attr = NULL;
1520 int ret = -EIO;
ce45b873
BL		 1521 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1522
1523 tx_bytes = pr->tx_bytes;
1524 tx_packets = pr->tx_packets;
1525 rx_bytes = pr->rx_bytes;
1526 rx_packets = pr->rx_packets;
7a291083
JBT		 1527
1528 memset(pr, 0, sizeof(struct ehea_port_res));
1529
ce45b873
BL		 1530 pr->tx_bytes = rx_bytes;
1531 pr->tx_packets = tx_packets;
1532 pr->rx_bytes = rx_bytes;
1533 pr->rx_packets = rx_packets;
1534
7a291083 1535 pr->port = port;
7a291083 1536
18604c54
JBT		 1537 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1538 if (!pr->eq) {
8c4877a4 1539 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1540 goto out_free;
1541 }
1542
1543 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1544 pr->eq->fw_handle,
7a291083
JBT		 1545 port->logical_port_id);
1546 if (!pr->recv_cq) {
8c4877a4 1547 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1548 goto out_free;
1549 }
1550
1551 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1552 pr->eq->fw_handle,
7a291083
JBT		 1553 port->logical_port_id);
1554 if (!pr->send_cq) {
8c4877a4 1555 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1556 goto out_free;
1557 }
1558
1559 if (netif_msg_ifup(port))
8c4877a4
JP		 1560 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1561 pr->send_cq->attr.act_nr_of_cqes,
1562 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1563
1564 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1565 if (!init_attr) {
1566 ret = -ENOMEM;
8c4877a4 1567 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1568 goto out_free;
1569 }
1570
1571 init_attr->low_lat_rq1 = 1;
1572 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1573 init_attr->rq_count = 3;
1574 init_attr->qp_token = queue_token;
1575 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1576 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1577 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1578 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1579 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1580 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1581 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1582 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1583 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1584 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1585 init_attr->port_nr = port->logical_port_id;
1586 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1587 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1588 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1589
1590 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1591 if (!pr->qp) {
8c4877a4 1592 pr_err("create_qp failed\n");
7a291083
JBT		 1593 ret = -EIO;
1594 goto out_free;
1595 }
1596
1597 if (netif_msg_ifup(port))
8c4877a4
JP		 1598 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",
1599 init_attr->qp_nr,
1600 init_attr->act_nr_send_wqes,
1601 init_attr->act_nr_rwqes_rq1,
1602 init_attr->act_nr_rwqes_rq2,
1603 init_attr->act_nr_rwqes_rq3);
7a291083 1604
44fb3126
TK		 1605 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1606
1607 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1608 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1609 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1610 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1611 if (ret)
1612 goto out_free;
1613
1614 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1615 if (ehea_gen_smrs(pr) != 0) {
1616 ret = -EIO;
1617 goto out_free;
1618 }
18604c54 1619
7a291083
JBT		 1620 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1621
1622 kfree(init_attr);
18604c54 1623
bea3348e 1624 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1625
d4dc4ec9
JBT		 1626 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1627 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1628 pr->lro_mgr.lro_arr = pr->lro_desc;
1629 pr->lro_mgr.get_skb_header = get_skb_hdr;
1630 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1631 pr->lro_mgr.dev = port->netdev;
1632 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1633 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1634
7a291083
JBT		 1635 ret = 0;
1636 goto out;
1637
1638out_free:
1639 kfree(init_attr);
1640 vfree(pr->sq_skba.arr);
1641 vfree(pr->rq1_skba.arr);
1642 vfree(pr->rq2_skba.arr);
1643 vfree(pr->rq3_skba.arr);
1644 ehea_destroy_qp(pr->qp);
1645 ehea_destroy_cq(pr->send_cq);
1646 ehea_destroy_cq(pr->recv_cq);
18604c54 1647 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1648out:
1649 return ret;
1650}
1651
1652static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1653{
1654 int ret, i;
1655
357eb46d
HH		 1656 if (pr->qp)
1657 netif_napi_del(&pr->napi);
1658
7a291083
JBT		 1659 ret = ehea_destroy_qp(pr->qp);
1660
1661 if (!ret) {
1662 ehea_destroy_cq(pr->send_cq);
1663 ehea_destroy_cq(pr->recv_cq);
18604c54 1664 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1665
1666 for (i = 0; i < pr->rq1_skba.len; i++)
1667 if (pr->rq1_skba.arr[i])
1668 dev_kfree_skb(pr->rq1_skba.arr[i]);
1669
1670 for (i = 0; i < pr->rq2_skba.len; i++)
1671 if (pr->rq2_skba.arr[i])
1672 dev_kfree_skb(pr->rq2_skba.arr[i]);
1673
1674 for (i = 0; i < pr->rq3_skba.len; i++)
1675 if (pr->rq3_skba.arr[i])
1676 dev_kfree_skb(pr->rq3_skba.arr[i]);
1677
1678 for (i = 0; i < pr->sq_skba.len; i++)
1679 if (pr->sq_skba.arr[i])
1680 dev_kfree_skb(pr->sq_skba.arr[i]);
1681
1682 vfree(pr->rq1_skba.arr);
1683 vfree(pr->rq2_skba.arr);
1684 vfree(pr->rq3_skba.arr);
1685 vfree(pr->sq_skba.arr);
1686 ret = ehea_rem_smrs(pr);
1687 }
1688 return ret;
1689}
1690
1691/*
1692 * The write_* functions store information in swqe which is used by
1693 * the hardware to calculate the ip/tcp/udp checksum
1694 */
1695
1696static inline void write_ip_start_end(struct ehea_swqe *swqe,
1697 const struct sk_buff *skb)
1698{
eddc9ec5 1699 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1700 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1701}
1702
1703static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1704 const struct sk_buff *skb)
1705{
1706 swqe->tcp_offset =
1707 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1708
1709 swqe->tcp_end = (u16)skb->len - 1;
1710}
1711
1712static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1713 const struct sk_buff *skb)
1714{
1715 swqe->tcp_offset =
1716 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1717
1718 swqe->tcp_end = (u16)skb->len - 1;
1719}
1720
1721
1722static void write_swqe2_TSO(struct sk_buff *skb,
1723 struct ehea_swqe *swqe, u32 lkey)
1724{
1725 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1726 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1727 int skb_data_size = skb_headlen(skb);
7a291083 1728 int headersize;
7a291083
JBT		 1729
1730 /* Packet is TCP with TSO enabled */
1731 swqe->tx_control |= EHEA_SWQE_TSO;
1732 swqe->mss = skb_shinfo(skb)->gso_size;
1733 /* copy only eth/ip/tcp headers to immediate data and
1734 * the rest of skb->data to sg1entry
1735 */
ab6a5bb6 1736 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1737
e743d313 1738 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1739
1740 if (skb_data_size >= headersize) {
1741 /* copy immediate data */
d626f62b 1742 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1743 swqe->immediate_data_length = headersize;
1744
1745 if (skb_data_size > headersize) {
1746 /* set sg1entry data */
1747 sg1entry->l_key = lkey;
1748 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1749 sg1entry->vaddr =
1750 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1751 swqe->descriptors++;
1752 }
1753 } else
8c4877a4 1754 pr_err("cannot handle fragmented headers\n");
7a291083
JBT		 1755}
1756
1757static void write_swqe2_nonTSO(struct sk_buff *skb,
1758 struct ehea_swqe *swqe, u32 lkey)
1759{
e743d313 1760 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1761 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1762 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1763
1764 /* Packet is any nonTSO type
1765 *
1766 * Copy as much as possible skb->data to immediate data and
1767 * the rest to sg1entry
1768 */
1769 if (skb_data_size >= SWQE2_MAX_IMM) {
1770 /* copy immediate data */
d626f62b 1771 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1772
1773 swqe->immediate_data_length = SWQE2_MAX_IMM;
1774
1775 if (skb_data_size > SWQE2_MAX_IMM) {
1776 /* copy sg1entry data */
1777 sg1entry->l_key = lkey;
1778 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1779 sg1entry->vaddr =
1780 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1781 swqe->descriptors++;
1782 }
1783 } else {
d626f62b 1784 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1785 swqe->immediate_data_length = skb_data_size;
1786 }
1787}
1788
1789static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1790 struct ehea_swqe *swqe, u32 lkey)
1791{
1792 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1793 skb_frag_t *frag;
1794 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1795
1796 nfrags = skb_shinfo(skb)->nr_frags;
1797 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1798 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1799 swqe->descriptors = 0;
1800 sg1entry_contains_frag_data = 0;
1801
1802 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1803 write_swqe2_TSO(skb, swqe, lkey);
1804 else
1805 write_swqe2_nonTSO(skb, swqe, lkey);
1806
1807 /* write descriptors */
1808 if (nfrags > 0) {
1809 if (swqe->descriptors == 0) {
1810 /* sg1entry not yet used */
1811 frag = &skb_shinfo(skb)->frags[0];
1812
1813 /* copy sg1entry data */
1814 sg1entry->l_key = lkey;
1815 sg1entry->len = frag->size;
44a5b3d5 1816 sg1entry->vaddr =
618c4a0a 1817 ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1818 swqe->descriptors++;
1819 sg1entry_contains_frag_data = 1;
1820 }
1821
1822 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1823
1824 frag = &skb_shinfo(skb)->frags[i];
1825 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1826
1827 sgentry->l_key = lkey;
1828 sgentry->len = frag->size;
618c4a0a 1829 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1830 swqe->descriptors++;
1831 }
1832 }
1833}
1834
1835static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1836{
1837 int ret = 0;
1838 u64 hret;
1839 u8 reg_type;
1840
1841 /* De/Register untagged packets */
1842 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1843 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1844 port->logical_port_id,
1845 reg_type, port->mac_addr, 0, hcallid);
1846 if (hret != H_SUCCESS) {
8c4877a4
JP		 1847 pr_err("%sregistering bc address failed (tagged)\n",
1848 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1849 ret = -EIO;
1850 goto out_herr;
1851 }
1852
1853 /* De/Register VLAN packets */
1854 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1855 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1856 port->logical_port_id,
1857 reg_type, port->mac_addr, 0, hcallid);
1858 if (hret != H_SUCCESS) {
8c4877a4
JP		 1859 pr_err("%sregistering bc address failed (vlan)\n",
1860 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1861 ret = -EIO;
1862 }
1863out_herr:
1864 return ret;
1865}
1866
1867static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1868{
1869 struct ehea_port *port = netdev_priv(dev);
1870 struct sockaddr *mac_addr = sa;
1871 struct hcp_ehea_port_cb0 *cb0;
1872 int ret;
1873 u64 hret;
1874
1875 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1876 ret = -EADDRNOTAVAIL;
1877 goto out;
1878 }
1879
3faf2693 1880 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1881 if (!cb0) {
8c4877a4 1882 pr_err("no mem for cb0\n");
7a291083
JBT		 1883 ret = -ENOMEM;
1884 goto out;
1885 }
1886
1887 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1888
1889 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1890
1891 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1892 port->logical_port_id, H_PORT_CB0,
1893 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1894 if (hret != H_SUCCESS) {
1895 ret = -EIO;
1896 goto out_free;
1897 }
1898
1899 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1900
1901 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1902 if (port->state == EHEA_PORT_UP) {
1903 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1904 if (ret)
1905 goto out_upregs;
1906 }
7a291083
JBT		 1907
1908 port->mac_addr = cb0->port_mac_addr << 16;
1909
1910 /* Register new MAC in pHYP */
00aaea2f
JBT		 1911 if (port->state == EHEA_PORT_UP) {
1912 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1913 if (ret)
1914 goto out_upregs;
1915 }
7a291083
JBT		 1916
1917 ret = 0;
21eee2dd
TK		 1918
1919out_upregs:
1920 ehea_update_bcmc_registrations();
7a291083 1921out_free:
3faf2693 1922 free_page((unsigned long)cb0);
7a291083
JBT		 1923out:
1924 return ret;
1925}
1926
1927static void ehea_promiscuous_error(u64 hret, int enable)
1928{
7674a588 1929 if (hret == H_AUTHORITY)
8c4877a4
JP		 1930 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1931 enable == 1 ? "en" : "dis");
7674a588 1932 else
8c4877a4
JP		 1933 pr_err("failed %sabling promiscuous mode\n",
1934 enable == 1 ? "en" : "dis");
7a291083
JBT		 1935}
1936
1937static void ehea_promiscuous(struct net_device *dev, int enable)
1938{
1939 struct ehea_port *port = netdev_priv(dev);
1940 struct hcp_ehea_port_cb7 *cb7;
1941 u64 hret;
1942
aa3bc6c6 1943 if (enable == port->promisc)
7a291083
JBT		 1944 return;
1945
3faf2693 1946 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1947 if (!cb7) {
8c4877a4 1948 pr_err("no mem for cb7\n");
7a291083
JBT		 1949 goto out;
1950 }
1951
1952 /* Modify Pxs_DUCQPN in CB7 */
1953 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1954
1955 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1956 port->logical_port_id,
1957 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1958 if (hret) {
1959 ehea_promiscuous_error(hret, enable);
1960 goto out;
1961 }
1962
1963 port->promisc = enable;
1964out:
3faf2693 1965 free_page((unsigned long)cb7);
7a291083
JBT		 1966}
1967
1968static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1969 u32 hcallid)
1970{
1971 u64 hret;
1972 u8 reg_type;
1973
1974 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1975 | EHEA_BCMC_UNTAGGED;
1976
1977 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1978 port->logical_port_id,
1979 reg_type, mc_mac_addr, 0, hcallid);
1980 if (hret)
1981 goto out;
1982
1983 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1984 | EHEA_BCMC_VLANID_ALL;
1985
1986 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1987 port->logical_port_id,
1988 reg_type, mc_mac_addr, 0, hcallid);
1989out:
1990 return hret;
1991}
1992
1993static int ehea_drop_multicast_list(struct net_device *dev)
1994{
1995 struct ehea_port *port = netdev_priv(dev);
1996 struct ehea_mc_list *mc_entry = port->mc_list;
1997 struct list_head *pos;
1998 struct list_head *temp;
1999 int ret = 0;
2000 u64 hret;
2001
2002 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2003 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2004
2005 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2006 H_DEREG_BCMC);
2007 if (hret) {
8c4877a4 2008 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 2009 ret = -EIO;
2010 }
2011
2012 list_del(pos);
2013 kfree(mc_entry);
2014 }
2015 return ret;
2016}
2017
2018static void ehea_allmulti(struct net_device *dev, int enable)
2019{
2020 struct ehea_port *port = netdev_priv(dev);
2021 u64 hret;
2022
2023 if (!port->allmulti) {
2024 if (enable) {
2025 /* Enable ALLMULTI */
2026 ehea_drop_multicast_list(dev);
2027 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2028 if (!hret)
2029 port->allmulti = 1;
2030 else
8c4877a4
JP		 2031 netdev_err(dev,
2032 "failed enabling IFF_ALLMULTI\n");
7a291083
JBT		 2033 }
2034 } else
2035 if (!enable) {
2036 /* Disable ALLMULTI */
2037 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2038 if (!hret)
2039 port->allmulti = 0;
2040 else
8c4877a4
JP		 2041 netdev_err(dev,
2042 "failed disabling IFF_ALLMULTI\n");
7a291083
JBT		 2043 }
2044}
2045
508d2b5d 2046static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2047{
2048 struct ehea_mc_list *ehea_mcl_entry;
2049 u64 hret;
2050
1e1675cc 2051 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 2052 if (!ehea_mcl_entry) {
8c4877a4 2053 pr_err("no mem for mcl_entry\n");
7a291083
JBT		 2054 return;
2055 }
2056
2057 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2058
2059 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2060
2061 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2062 H_REG_BCMC);
2063 if (!hret)
2064 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2065 else {
8c4877a4 2066 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 2067 kfree(ehea_mcl_entry);
2068 }
2069}
2070
2071static void ehea_set_multicast_list(struct net_device *dev)
2072{
2073 struct ehea_port *port = netdev_priv(dev);
22bedad3 2074 struct netdev_hw_addr *ha;
48e2f183 2075 int ret;
7a291083 2076
a4910b74 2077 if (port->promisc) {
7a291083
JBT		 2078 ehea_promiscuous(dev, 1);
2079 return;
2080 }
2081 ehea_promiscuous(dev, 0);
2082
2083 if (dev->flags & IFF_ALLMULTI) {
2084 ehea_allmulti(dev, 1);
21eee2dd 2085 goto out;
7a291083
JBT		 2086 }
2087 ehea_allmulti(dev, 0);
2088
4cd24eaf 2089 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2090 ret = ehea_drop_multicast_list(dev);
2091 if (ret) {
2092 /* Dropping the current multicast list failed.
2093 * Enabling ALL_MULTI is the best we can do.
2094 */
2095 ehea_allmulti(dev, 1);
2096 }
2097
4cd24eaf 2098 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 2099 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
2100 port->adapter->max_mc_mac);
7a291083
JBT		 2101 goto out;
2102 }
2103
22bedad3
JP		 2104 netdev_for_each_mc_addr(ha, dev)
2105 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2106
7a291083
JBT		 2107 }
2108out:
21eee2dd 2109 ehea_update_bcmc_registrations();
7a291083
JBT		 2110}
2111
2112static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2113{
2114 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2115 return -EINVAL;
2116 dev->mtu = new_mtu;
2117 return 0;
2118}
2119
2120static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2121 struct ehea_swqe *swqe, u32 lkey)
2122{
2123 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2124 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2125
7a291083
JBT		 2126 /* IPv4 */
2127 swqe->tx_control |= EHEA_SWQE_CRC
2128 | EHEA_SWQE_IP_CHECKSUM
2129 | EHEA_SWQE_TCP_CHECKSUM
2130 | EHEA_SWQE_IMM_DATA_PRESENT
2131 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2132
2133 write_ip_start_end(swqe, skb);
2134
eddc9ec5 2135 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2136 if ((iph->frag_off & IP_MF) ||
2137 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2138 /* IP fragment, so don't change cs */
2139 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2140 else
2141 write_udp_offset_end(swqe, skb);
eddc9ec5 2142 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2143 write_tcp_offset_end(swqe, skb);
2144 }
2145
2146 /* icmp (big data) and ip segmentation packets (all other ip
2147 packets) do not require any special handling */
2148
2149 } else {
2150 /* Other Ethernet Protocol */
2151 swqe->tx_control |= EHEA_SWQE_CRC
2152 | EHEA_SWQE_IMM_DATA_PRESENT
2153 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2154 }
2155
2156 write_swqe2_data(skb, dev, swqe, lkey);
2157}
2158
2159static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2160 struct ehea_swqe *swqe)
2161{
2162 int nfrags = skb_shinfo(skb)->nr_frags;
2163 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2164 skb_frag_t *frag;
2165 int i;
2166
2167 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2168 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2169
7a291083
JBT		 2170 /* IPv4 */
2171 write_ip_start_end(swqe, skb);
2172
eddc9ec5 2173 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2174 swqe->tx_control |= EHEA_SWQE_CRC
2175 | EHEA_SWQE_IP_CHECKSUM
2176 | EHEA_SWQE_TCP_CHECKSUM
2177 | EHEA_SWQE_IMM_DATA_PRESENT;
2178
2179 write_tcp_offset_end(swqe, skb);
2180
eddc9ec5 2181 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2182 if ((iph->frag_off & IP_MF) ||
2183 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2184 /* IP fragment, so don't change cs */
2185 swqe->tx_control |= EHEA_SWQE_CRC
2186 | EHEA_SWQE_IMM_DATA_PRESENT;
2187 else {
2188 swqe->tx_control |= EHEA_SWQE_CRC
2189 | EHEA_SWQE_IP_CHECKSUM
2190 | EHEA_SWQE_TCP_CHECKSUM
2191 | EHEA_SWQE_IMM_DATA_PRESENT;
2192
2193 write_udp_offset_end(swqe, skb);
2194 }
2195 } else {
2196 /* icmp (big data) and
2197 ip segmentation packets (all other ip packets) */
2198 swqe->tx_control |= EHEA_SWQE_CRC
2199 | EHEA_SWQE_IP_CHECKSUM
2200 | EHEA_SWQE_IMM_DATA_PRESENT;
2201 }
2202 } else {
2203 /* Other Ethernet Protocol */
2204 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2205 }
2206 /* copy (immediate) data */
2207 if (nfrags == 0) {
2208 /* data is in a single piece */
d626f62b 2209 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2210 } else {
2211 /* first copy data from the skb->data buffer ... */
d626f62b 2212 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2213 skb_headlen(skb));
2214 imm_data += skb_headlen(skb);
7a291083
JBT		 2215
2216 /* ... then copy data from the fragments */
2217 for (i = 0; i < nfrags; i++) {
2218 frag = &skb_shinfo(skb)->frags[i];
618c4a0a 2219 memcpy(imm_data, skb_frag_address(frag), frag->size);
7a291083
JBT		 2220 imm_data += frag->size;
2221 }
2222 }
2223 swqe->immediate_data_length = skb->len;
2224 dev_kfree_skb(skb);
2225}
2226
2227static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2228{
2229 struct ehea_port *port = netdev_priv(dev);
2230 struct ehea_swqe *swqe;
7a291083
JBT		 2231 u32 lkey;
2232 int swqe_index;
18604c54 2233 struct ehea_port_res *pr;
b9564468 2234 struct netdev_queue *txq;
18604c54 2235
b9564468
AB		 2236 pr = &port->port_res[skb_get_queue_mapping(skb)];
2237 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
18604c54 2238
7a291083
JBT		 2239 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2240 memset(swqe, 0, SWQE_HEADER_SIZE);
2241 atomic_dec(&pr->swqe_avail);
2242
e5ccd961
ED		 2243 if (vlan_tx_tag_present(skb)) {
2244 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2245 swqe->vlan_tag = vlan_tx_tag_get(skb);
2246 }
2247
ce45b873
BL		 2248 pr->tx_packets++;
2249 pr->tx_bytes += skb->len;
2250
7a291083
JBT		 2251 if (skb->len <= SWQE3_MAX_IMM) {
2252 u32 sig_iv = port->sig_comp_iv;
2253 u32 swqe_num = pr->swqe_id_counter;
2254 ehea_xmit3(skb, dev, swqe);
2255 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2256 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2257 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2258 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2259 sig_iv);
2260 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2261 pr->swqe_ll_count = 0;
2262 } else
2263 pr->swqe_ll_count += 1;
2264 } else {
2265 swqe->wr_id =
2266 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2267 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2268 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2269 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2270 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2271
2272 pr->sq_skba.index++;
2273 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2274
2275 lkey = pr->send_mr.lkey;
2276 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2277 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2278 }
2279 pr->swqe_id_counter += 1;
2280
8c4877a4
JP		 2281 netif_info(port, tx_queued, dev,
2282 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2283 if (netif_msg_tx_queued(port))
bff0a55f 2284 ehea_dump(swqe, 512, "swqe");
7a291083 2285
2c69448b 2286 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
b9564468 2287 netif_tx_stop_queue(txq);
2c69448b
JBT		 2288 swqe->tx_control |= EHEA_SWQE_PURGE;
2289 }
44c82152 2290
7a291083 2291 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2292
2293 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
b9564468
AB		 2294 pr->p_stats.queue_stopped++;
2295 netif_tx_stop_queue(txq);
7a291083 2296 }
2c69448b 2297
7a291083
JBT		 2298 return NETDEV_TX_OK;
2299}
2300
7a291083
JBT		 2301static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2302{
2303 struct ehea_port *port = netdev_priv(dev);
2304 struct ehea_adapter *adapter = port->adapter;
2305 struct hcp_ehea_port_cb1 *cb1;
2306 int index;
2307 u64 hret;
2308
3faf2693 2309 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2310 if (!cb1) {
8c4877a4 2311 pr_err("no mem for cb1\n");
7a291083
JBT		 2312 goto out;
2313 }
2314
2315 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2316 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2317 if (hret != H_SUCCESS) {
8c4877a4 2318 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2319 goto out;
2320 }
2321
2322 index = (vid / 64);
dec590c1 2323 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2324
2325 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2326 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2327 if (hret != H_SUCCESS)
8c4877a4 2328 pr_err("modify_ehea_port failed\n");
7a291083 2329out:
3faf2693 2330 free_page((unsigned long)cb1);
7a291083
JBT		 2331 return;
2332}
2333
2334static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2335{
2336 struct ehea_port *port = netdev_priv(dev);
2337 struct ehea_adapter *adapter = port->adapter;
2338 struct hcp_ehea_port_cb1 *cb1;
2339 int index;
2340 u64 hret;
2341
3faf2693 2342 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2343 if (!cb1) {
8c4877a4 2344 pr_err("no mem for cb1\n");
7a291083
JBT		 2345 goto out;
2346 }
2347
2348 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2349 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2350 if (hret != H_SUCCESS) {
8c4877a4 2351 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2352 goto out;
2353 }
2354
2355 index = (vid / 64);
dec590c1 2356 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2357
2358 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2359 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2360 if (hret != H_SUCCESS)
8c4877a4 2361 pr_err("modify_ehea_port failed\n");
7a291083 2362out:
3faf2693 2363 free_page((unsigned long)cb1);
7a291083
JBT		 2364}
2365
2366int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2367{
2368 int ret = -EIO;
2369 u64 hret;
2370 u16 dummy16 = 0;
2371 u64 dummy64 = 0;
508d2b5d 2372 struct hcp_modify_qp_cb0 *cb0;
7a291083 2373
3faf2693 2374 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2375 if (!cb0) {
2376 ret = -ENOMEM;
2377 goto out;
2378 }
2379
2380 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2381 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2382 if (hret != H_SUCCESS) {
8c4877a4 2383 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2384 goto out;
2385 }
2386
2387 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2388 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2389 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2390 &dummy64, &dummy64, &dummy16, &dummy16);
2391 if (hret != H_SUCCESS) {
8c4877a4 2392 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2393 goto out;
2394 }
2395
2396 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2397 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2398 if (hret != H_SUCCESS) {
8c4877a4 2399 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2400 goto out;
2401 }
2402
2403 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2404 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2405 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2406 &dummy64, &dummy64, &dummy16, &dummy16);
2407 if (hret != H_SUCCESS) {
8c4877a4 2408 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2409 goto out;
2410 }
2411
2412 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2413 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2414 if (hret != H_SUCCESS) {
8c4877a4 2415 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2416 goto out;
2417 }
2418
2419 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2420 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2421 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2422 &dummy64, &dummy64, &dummy16, &dummy16);
2423 if (hret != H_SUCCESS) {
8c4877a4 2424 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2425 goto out;
2426 }
2427
2428 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2429 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2430 if (hret != H_SUCCESS) {
8c4877a4 2431 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2432 goto out;
2433 }
2434
2435 ret = 0;
2436out:
3faf2693 2437 free_page((unsigned long)cb0);
7a291083
JBT		 2438 return ret;
2439}
2440
2441static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2442 int add_tx_qps)
2443{
2444 int ret, i;
2445 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2446 enum ehea_eq_type eq_type = EHEA_EQ;
2447
2448 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2449 EHEA_MAX_ENTRIES_EQ, 1);
2450 if (!port->qp_eq) {
2451 ret = -EINVAL;
8c4877a4 2452 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2453 goto out_kill_eq;
2454 }
2455
2456 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2457 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2458 pr_cfg.max_entries_sq = sq_entries;
2459 pr_cfg.max_entries_rq1 = rq1_entries;
2460 pr_cfg.max_entries_rq2 = rq2_entries;
2461 pr_cfg.max_entries_rq3 = rq3_entries;
2462
2463 pr_cfg_small_rx.max_entries_rcq = 1;
2464 pr_cfg_small_rx.max_entries_scq = sq_entries;
2465 pr_cfg_small_rx.max_entries_sq = sq_entries;
2466 pr_cfg_small_rx.max_entries_rq1 = 1;
2467 pr_cfg_small_rx.max_entries_rq2 = 1;
2468 pr_cfg_small_rx.max_entries_rq3 = 1;
2469
2470 for (i = 0; i < def_qps; i++) {
2471 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2472 if (ret)
2473 goto out_clean_pr;
2474 }
2475 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2476 ret = ehea_init_port_res(port, &port->port_res[i],
2477 &pr_cfg_small_rx, i);
2478 if (ret)
2479 goto out_clean_pr;
2480 }
2481
2482 return 0;
2483
2484out_clean_pr:
2485 while (--i >= 0)
2486 ehea_clean_portres(port, &port->port_res[i]);
2487
2488out_kill_eq:
2489 ehea_destroy_eq(port->qp_eq);
2490 return ret;
2491}
2492
2493static int ehea_clean_all_portres(struct ehea_port *port)
2494{
2495 int ret = 0;
2496 int i;
2497
508d2b5d 2498 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2499 ret |= ehea_clean_portres(port, &port->port_res[i]);
2500
2501 ret |= ehea_destroy_eq(port->qp_eq);
2502
2503 return ret;
2504}
2505
35cf2e2e 2506static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2507{
35cf2e2e
TK		 2508 if (adapter->active_ports)
2509 return;
1211bb6d
TK		 2510
2511 ehea_rem_mr(&adapter->mr);
2512}
2513
35cf2e2e 2514static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2515{
35cf2e2e
TK		 2516 if (adapter->active_ports)
2517 return 0;
1211bb6d
TK		 2518
2519 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2520}
2521
7a291083
JBT		 2522static int ehea_up(struct net_device *dev)
2523{
2524 int ret, i;
2525 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2526
2527 if (port->state == EHEA_PORT_UP)
2528 return 0;
2529
2530 ret = ehea_port_res_setup(port, port->num_def_qps,
2531 port->num_add_tx_qps);
2532 if (ret) {
8c4877a4 2533 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2534 goto out;
2535 }
2536
2537 /* Set default QP for this port */
2538 ret = ehea_configure_port(port);
2539 if (ret) {
8c4877a4 2540 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2541 goto out_clean_pr;
2542 }
2543
7a291083
JBT		 2544 ret = ehea_reg_interrupts(dev);
2545 if (ret) {
8c4877a4 2546 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2547 goto out_clean_pr;
7a291083
JBT		 2548 }
2549
508d2b5d 2550 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2551 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2552 if (ret) {
8c4877a4 2553 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2554 goto out_free_irqs;
2555 }
2556 }
2557
508d2b5d 2558 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2559 ret = ehea_fill_port_res(&port->port_res[i]);
2560 if (ret) {
8c4877a4 2561 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2562 goto out_free_irqs;
2563 }
2564 }
2565
21eee2dd
TK		 2566 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2567 if (ret) {
2568 ret = -EIO;
2569 goto out_free_irqs;
2570 }
2571
7a291083 2572 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2573
2574 ret = 0;
7a291083
JBT		 2575 goto out;
2576
2577out_free_irqs:
2578 ehea_free_interrupts(dev);
2579
7a291083
JBT		 2580out_clean_pr:
2581 ehea_clean_all_portres(port);
2582out:
44c82152 2583 if (ret)
8c4877a4 2584 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2585
21eee2dd 2586 ehea_update_bcmc_registrations();
21eee2dd 2587 ehea_update_firmware_handles();
21eee2dd 2588
7a291083
JBT		 2589 return ret;
2590}
2591
bea3348e
SH		 2592static void port_napi_disable(struct ehea_port *port)
2593{
2594 int i;
2595
0173b793 2596 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2597 napi_disable(&port->port_res[i].napi);
2598}
2599
2600static void port_napi_enable(struct ehea_port *port)
2601{
2602 int i;
2603
0173b793 2604 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2605 napi_enable(&port->port_res[i].napi);
2606}
2607
7a291083
JBT		 2608static int ehea_open(struct net_device *dev)
2609{
2610 int ret;
2611 struct ehea_port *port = netdev_priv(dev);
2612
a5af6ad3 2613 mutex_lock(&port->port_lock);
7a291083 2614
8c4877a4 2615 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2616
2617 ret = ehea_up(dev);
bea3348e
SH		 2618 if (!ret) {
2619 port_napi_enable(port);
b9564468 2620 netif_tx_start_all_queues(dev);
bea3348e 2621 }
7a291083 2622
a5af6ad3 2623 mutex_unlock(&port->port_lock);
2aefcad8 2624 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
7a291083
JBT		 2625
2626 return ret;
2627}
2628
2629static int ehea_down(struct net_device *dev)
2630{
bea3348e 2631 int ret;
7a291083
JBT		 2632 struct ehea_port *port = netdev_priv(dev);
2633
2634 if (port->state == EHEA_PORT_DOWN)
2635 return 0;
2636
2637 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2638 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2639
7a291083
JBT		 2640 ehea_free_interrupts(dev);
2641
7a291083 2642 port->state = EHEA_PORT_DOWN;
44c82152 2643
21eee2dd 2644 ehea_update_bcmc_registrations();
21eee2dd 2645
44c82152
TK		 2646 ret = ehea_clean_all_portres(port);
2647 if (ret)
8c4877a4 2648 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2649
21eee2dd 2650 ehea_update_firmware_handles();
21eee2dd 2651
7a291083
JBT		 2652 return ret;
2653}
2654
2655static int ehea_stop(struct net_device *dev)
2656{
2657 int ret;
2658 struct ehea_port *port = netdev_priv(dev);
2659
8c4877a4 2660 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2661
2f69ae01 2662 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2663 cancel_work_sync(&port->reset_task);
2aefcad8 2664 cancel_delayed_work_sync(&port->stats_work);
a5af6ad3 2665 mutex_lock(&port->port_lock);
b9564468 2666 netif_tx_stop_all_queues(dev);
0173b793 2667 port_napi_disable(port);
7a291083 2668 ret = ehea_down(dev);
a5af6ad3 2669 mutex_unlock(&port->port_lock);
2f69ae01 2670 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2671 return ret;
2672}
2673
22559c5d 2674static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2675{
2676 struct ehea_qp qp = *orig_qp;
2677 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2678 struct ehea_swqe *swqe;
2679 int wqe_index;
2680 int i;
2681
2682 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2683 swqe = ehea_get_swqe(&qp, &wqe_index);
2684 swqe->tx_control |= EHEA_SWQE_PURGE;
2685 }
2686}
2687
22559c5d 2688static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2689{
2690 int i;
2691
2692 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2693 struct ehea_port_res *pr = &port->port_res[i];
2694 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2695 int ret;
2696
2697 ret = wait_event_timeout(port->swqe_avail_wq,
2698 atomic_read(&pr->swqe_avail) >= swqe_max,
2699 msecs_to_jiffies(100));
2700
2701 if (!ret) {
8c4877a4 2702 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2703 break;
44fb3126
TK		 2704 }
2705 }
2706}
2707
2c69448b
JBT		 2708int ehea_stop_qps(struct net_device *dev)
2709{
2710 struct ehea_port *port = netdev_priv(dev);
2711 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2712 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2713 int ret = -EIO;
2714 int dret;
2715 int i;
2716 u64 hret;
2717 u64 dummy64 = 0;
2718 u16 dummy16 = 0;
2719
3faf2693 2720 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2721 if (!cb0) {
2722 ret = -ENOMEM;
2723 goto out;
2724 }
2725
2726 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2727 struct ehea_port_res *pr = &port->port_res[i];
2728 struct ehea_qp *qp = pr->qp;
2729
2730 /* Purge send queue */
2731 ehea_purge_sq(qp);
2732
2733 /* Disable queue pair */
2734 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2735 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2736 cb0);
2737 if (hret != H_SUCCESS) {
8c4877a4 2738 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2739 goto out;
2740 }
2741
2742 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2743 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2744
2745 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2746 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2747 1), cb0, &dummy64,
2748 &dummy64, &dummy16, &dummy16);
2749 if (hret != H_SUCCESS) {
8c4877a4 2750 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2751 goto out;
2752 }
2753
2754 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2755 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2756 cb0);
2757 if (hret != H_SUCCESS) {
8c4877a4 2758 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2759 goto out;
2760 }
2761
2762 /* deregister shared memory regions */
2763 dret = ehea_rem_smrs(pr);
2764 if (dret) {
8c4877a4 2765 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2766 goto out;
2767 }
2768 }
2769
2770 ret = 0;
2771out:
3faf2693 2772 free_page((unsigned long)cb0);
2c69448b
JBT		 2773
2774 return ret;
2775}
2776
508d2b5d 2777void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2778{
2779 struct ehea_qp qp = *orig_qp;
2780 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2781 struct ehea_rwqe *rwqe;
2782 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2783 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2784 struct sk_buff *skb;
2785 u32 lkey = pr->recv_mr.lkey;
2786
2787
2788 int i;
2789 int index;
2790
2791 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2792 rwqe = ehea_get_next_rwqe(&qp, 2);
2793 rwqe->sg_list[0].l_key = lkey;
2794 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2795 skb = skba_rq2[index];
2796 if (skb)
2797 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2798 }
2799
2800 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2801 rwqe = ehea_get_next_rwqe(&qp, 3);
2802 rwqe->sg_list[0].l_key = lkey;
2803 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2804 skb = skba_rq3[index];
2805 if (skb)
2806 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2807 }
2808}
2809
2810int ehea_restart_qps(struct net_device *dev)
2811{
2812 struct ehea_port *port = netdev_priv(dev);
2813 struct ehea_adapter *adapter = port->adapter;
2814 int ret = 0;
2815 int i;
2816
508d2b5d 2817 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2818 u64 hret;
2819 u64 dummy64 = 0;
2820 u16 dummy16 = 0;
2821
3faf2693 2822 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2823 if (!cb0) {
2824 ret = -ENOMEM;
2825 goto out;
2826 }
2827
2828 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2829 struct ehea_port_res *pr = &port->port_res[i];
2830 struct ehea_qp *qp = pr->qp;
2831
2832 ret = ehea_gen_smrs(pr);
2833 if (ret) {
8c4877a4 2834 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2835 goto out;
2836 }
2837
2838 ehea_update_rqs(qp, pr);
2839
2840 /* Enable queue pair */
2841 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2842 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2843 cb0);
2844 if (hret != H_SUCCESS) {
8c4877a4 2845 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2846 goto out;
2847 }
2848
2849 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2850 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2851
2852 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2853 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2854 1), cb0, &dummy64,
2855 &dummy64, &dummy16, &dummy16);
2856 if (hret != H_SUCCESS) {
8c4877a4 2857 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2858 goto out;
2859 }
2860
2861 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2862 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2863 cb0);
2864 if (hret != H_SUCCESS) {
8c4877a4 2865 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2866 goto out;
2867 }
2868
2869 /* refill entire queue */
2870 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2871 ehea_refill_rq2(pr, 0);
2872 ehea_refill_rq3(pr, 0);
2873 }
2874out:
3faf2693 2875 free_page((unsigned long)cb0);
2c69448b
JBT		 2876
2877 return ret;
2878}
2879
c4028958 2880static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2881{
2882 int ret;
c4028958
DH		 2883 struct ehea_port *port =
2884 container_of(work, struct ehea_port, reset_task);
2885 struct net_device *dev = port->netdev;
7a291083 2886
099473c1 2887 mutex_lock(&dlpar_mem_lock);
7a291083 2888 port->resets++;
a5af6ad3 2889 mutex_lock(&port->port_lock);
b9564468 2890 netif_tx_disable(dev);
bea3348e
SH		 2891
2892 port_napi_disable(port);
7a291083 2893
44c82152 2894 ehea_down(dev);
7a291083
JBT		 2895
2896 ret = ehea_up(dev);
44c82152 2897 if (ret)
7a291083 2898 goto out;
7a291083 2899
2c69448b
JBT		 2900 ehea_set_multicast_list(dev);
2901
8c4877a4 2902 netif_info(port, timer, dev, "reset successful\n");
7a291083 2903
bea3348e
SH		 2904 port_napi_enable(port);
2905
b9564468 2906 netif_tx_wake_all_queues(dev);
7a291083 2907out:
a5af6ad3 2908 mutex_unlock(&port->port_lock);
099473c1 2909 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2910}
2911
3d6b892b 2912static void ehea_rereg_mrs(void)
44c82152
TK		 2913{
2914 int ret, i;
2915 struct ehea_adapter *adapter;
2916
8c4877a4 2917 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2918
2919 list_for_each_entry(adapter, &adapter_list, list)
2920 if (adapter->active_ports) {
2921 /* Shutdown all ports */
2922 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2923 struct ehea_port *port = adapter->port[i];
a5af6ad3 2924 struct net_device *dev;
44c82152 2925
a5af6ad3
DW		 2926 if (!port)
2927 continue;
44c82152 2928
a5af6ad3
DW		 2929 dev = port->netdev;
2930
2931 if (dev->flags & IFF_UP) {
2932 mutex_lock(&port->port_lock);
b9564468 2933 netif_tx_disable(dev);
df39e8ba 2934 ehea_flush_sq(port);
a5af6ad3
DW		 2935 ret = ehea_stop_qps(dev);
2936 if (ret) {
2937 mutex_unlock(&port->port_lock);
2938 goto out;
44c82152 2939 }
a5af6ad3
DW		 2940 port_napi_disable(port);
2941 mutex_unlock(&port->port_lock);
44c82152 2942 }
2928db4c 2943 reset_sq_restart_flag(port);
44c82152
TK		 2944 }
2945
2946 /* Unregister old memory region */
2947 ret = ehea_rem_mr(&adapter->mr);
2948 if (ret) {
8c4877a4 2949 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 2950 goto out;
2951 }
2952 }
2953
44c82152
TK		 2954 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2955
2956 list_for_each_entry(adapter, &adapter_list, list)
2957 if (adapter->active_ports) {
2958 /* Register new memory region */
2959 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2960 if (ret) {
8c4877a4 2961 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 2962 goto out;
2963 }
2964
2965 /* Restart all ports */
2966 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2967 struct ehea_port *port = adapter->port[i];
2968
2969 if (port) {
2970 struct net_device *dev = port->netdev;
2971
2972 if (dev->flags & IFF_UP) {
a5af6ad3 2973 mutex_lock(&port->port_lock);
2c69448b 2974 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 2975 if (!ret) {
2976 check_sqs(port);
2977 port_napi_enable(port);
b9564468 2978 netif_tx_wake_all_queues(dev);
6f4d6dc1
BL		 2979 } else {
2980 netdev_err(dev, "Unable to restart QPS\n");
2981 }
a5af6ad3 2982 mutex_unlock(&port->port_lock);
44c82152
TK		 2983 }
2984 }
2985 }
2986 }
8c4877a4 2987 pr_info("re-initializing driver complete\n");
44c82152
TK		 2988out:
2989 return;
2990}
2991
7a291083
JBT		 2992static void ehea_tx_watchdog(struct net_device *dev)
2993{
2994 struct ehea_port *port = netdev_priv(dev);
2995
2c69448b
JBT		 2996 if (netif_carrier_ok(dev) &&
2997 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2998 ehea_schedule_port_reset(port);
7a291083
JBT		 2999}
3000
3001int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3002{
3003 struct hcp_query_ehea *cb;
3004 u64 hret;
3005 int ret;
3006
3faf2693 3007 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3008 if (!cb) {
3009 ret = -ENOMEM;
3010 goto out;
3011 }
3012
3013 hret = ehea_h_query_ehea(adapter->handle, cb);
3014
3015 if (hret != H_SUCCESS) {
3016 ret = -EIO;
3017 goto out_herr;
3018 }
3019
7a291083
JBT		 3020 adapter->max_mc_mac = cb->max_mc_mac - 1;
3021 ret = 0;
3022
3023out_herr:
3faf2693 3024 free_page((unsigned long)cb);
7a291083
JBT		 3025out:
3026 return ret;
3027}
3028
1acf2318 3029int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3030{
7a291083 3031 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3032 u64 hret;
3033 int ret = 0;
7a291083 3034
1acf2318 3035 *jumbo = 0;
7a291083 3036
1acf2318 3037 /* (Try to) enable *jumbo frames */
3faf2693 3038 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 3039 if (!cb4) {
8c4877a4 3040 pr_err("no mem for cb4\n");
1acf2318
JBT		 3041 ret = -ENOMEM;
3042 goto out;
7a291083 3043 } else {
1acf2318 3044 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3045 port->logical_port_id,
3046 H_PORT_CB4,
3047 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3048 if (hret == H_SUCCESS) {
3049 if (cb4->jumbo_frame)
1acf2318 3050 *jumbo = 1;
9c750b7d
TK		 3051 else {
3052 cb4->jumbo_frame = 1;
1acf2318
JBT		 3053 hret = ehea_h_modify_ehea_port(port->adapter->
3054 handle,
9c750b7d 3055 port->
1acf2318 3056 logical_port_id,
9c750b7d
TK		 3057 H_PORT_CB4,
3058 H_PORT_CB4_JUMBO,
3059 cb4);
3060 if (hret == H_SUCCESS)
1acf2318 3061 *jumbo = 1;
9c750b7d 3062 }
1acf2318
JBT		 3063 } else
3064 ret = -EINVAL;
3065
3faf2693 3066 free_page((unsigned long)cb4);
7a291083 3067 }
1acf2318
JBT		 3068out:
3069 return ret;
3070}
3071
3072static ssize_t ehea_show_port_id(struct device *dev,
3073 struct device_attribute *attr, char *buf)
3074{
3075 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3076 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3077}
3078
3079static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3080 NULL);
3081
3082static void __devinit logical_port_release(struct device *dev)
3083{
3084 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3085 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3086}
3087
3088static struct device *ehea_register_port(struct ehea_port *port,
3089 struct device_node *dn)
3090{
3091 int ret;
3092
61c7a080 3093 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3094 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3095 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3096
db1d7bf7 3097 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3098 port->ofdev.dev.release = logical_port_release;
3099
3100 ret = of_device_register(&port->ofdev);
3101 if (ret) {
8c4877a4 3102 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 3103 goto out;
3104 }
3105
3106 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3107 if (ret) {
8c4877a4 3108 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 3109 goto out_unreg_of_dev;
3110 }
e542aa6b 3111
1acf2318
JBT		 3112 return &port->ofdev.dev;
3113
3114out_unreg_of_dev:
3115 of_device_unregister(&port->ofdev);
3116out:
3117 return NULL;
3118}
3119
3120static void ehea_unregister_port(struct ehea_port *port)
3121{
3122 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3123 of_device_unregister(&port->ofdev);
3124}
3125
086c1b2c
TK		 3126static const struct net_device_ops ehea_netdev_ops = {
3127 .ndo_open = ehea_open,
3128 .ndo_stop = ehea_stop,
3129 .ndo_start_xmit = ehea_start_xmit,
3130#ifdef CONFIG_NET_POLL_CONTROLLER
3131 .ndo_poll_controller = ehea_netpoll,
3132#endif
3133 .ndo_get_stats = ehea_get_stats,
3134 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3135 .ndo_validate_addr = eth_validate_addr,
afc4b13d 3136 .ndo_set_rx_mode = ehea_set_multicast_list,
086c1b2c 3137 .ndo_change_mtu = ehea_change_mtu,
086c1b2c 3138 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3139 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3140 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3141};
3142
1acf2318
JBT		 3143struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3144 u32 logical_port_id,
3145 struct device_node *dn)
3146{
3147 int ret;
3148 struct net_device *dev;
3149 struct ehea_port *port;
3150 struct device *port_dev;
3151 int jumbo;
3152
3153 /* allocate memory for the port structures */
b9564468 3154 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
1acf2318
JBT		 3155
3156 if (!dev) {
8c4877a4 3157 pr_err("no mem for net_device\n");
1acf2318
JBT		 3158 ret = -ENOMEM;
3159 goto out_err;
3160 }
3161
3162 port = netdev_priv(dev);
3163
a5af6ad3 3164 mutex_init(&port->port_lock);
1acf2318
JBT		 3165 port->state = EHEA_PORT_DOWN;
3166 port->sig_comp_iv = sq_entries / 10;
3167
3168 port->adapter = adapter;
3169 port->netdev = dev;
3170 port->logical_port_id = logical_port_id;
3171
3172 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3173
3174 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3175 if (!port->mc_list) {
3176 ret = -ENOMEM;
3177 goto out_free_ethdev;
3178 }
3179
3180 INIT_LIST_HEAD(&port->mc_list->list);
3181
3182 ret = ehea_sense_port_attr(port);
3183 if (ret)
3184 goto out_free_mc_list;
3185
b9564468
AB		 3186 netif_set_real_num_rx_queues(dev, port->num_def_qps);
3187 netif_set_real_num_tx_queues(dev, port->num_def_qps +
3188 port->num_add_tx_qps);
3189
1acf2318
JBT		 3190 port_dev = ehea_register_port(port, dn);
3191 if (!port_dev)
3192 goto out_free_mc_list;
3193
3194 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3195
3196 /* initialize net_device structure */
7a291083
JBT		 3197 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3198
086c1b2c
TK		 3199 dev->netdev_ops = &ehea_netdev_ops;
3200 ehea_set_ethtool_ops(dev);
3201
f4786a96
MM		 3202 dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3203 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX | NETIF_F_LRO;
7a291083 3204 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3205 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083 3206 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3f7947b9 3207 | NETIF_F_RXCSUM;
7a291083
JBT		 3208 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3209
c7757fdb
BL		 3210 if (use_lro)
3211 dev->features |= NETIF_F_LRO;
3212
c4028958 3213 INIT_WORK(&port->reset_task, ehea_reset_port);
2aefcad8 3214 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
7a291083 3215
21ccc793
AB		 3216 init_waitqueue_head(&port->swqe_avail_wq);
3217 init_waitqueue_head(&port->restart_wq);
3218
2aefcad8 3219 memset(&port->stats, 0, sizeof(struct net_device_stats));
7a291083
JBT		 3220 ret = register_netdev(dev);
3221 if (ret) {
8c4877a4 3222 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3223 goto out_unreg_port;
7a291083
JBT		 3224 }
3225
d4dc4ec9
JBT		 3226 port->lro_max_aggr = lro_max_aggr;
3227
1acf2318 3228 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3229 if (ret)
8c4877a4 3230 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3231
8c4877a4
JP		 3232 netdev_info(dev, "Jumbo frames are %sabled\n",
3233 jumbo == 1 ? "en" : "dis");
9c750b7d 3234
44c82152
TK		 3235 adapter->active_ports++;
3236
1acf2318 3237 return port;
7a291083 3238
1acf2318
JBT		 3239out_unreg_port:
3240 ehea_unregister_port(port);
3241
3242out_free_mc_list:
7a291083 3243 kfree(port->mc_list);
1acf2318
JBT		 3244
3245out_free_ethdev:
3246 free_netdev(dev);
3247
3248out_err:
8c4877a4
JP		 3249 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3250 logical_port_id, ret);
1acf2318
JBT		 3251 return NULL;
3252}
3253
3254static void ehea_shutdown_single_port(struct ehea_port *port)
3255{
7fb1c2ac 3256 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3257
3258 cancel_work_sync(&port->reset_task);
2aefcad8 3259 cancel_delayed_work_sync(&port->stats_work);
1acf2318
JBT		 3260 unregister_netdev(port->netdev);
3261 ehea_unregister_port(port);
3262 kfree(port->mc_list);
3263 free_netdev(port->netdev);
7fb1c2ac 3264 adapter->active_ports--;
7a291083
JBT		 3265}
3266
3267static int ehea_setup_ports(struct ehea_adapter *adapter)
3268{
1acf2318
JBT		 3269 struct device_node *lhea_dn;
3270 struct device_node *eth_dn = NULL;
d1d25aab 3271
9f9a3b8a 3272 const u32 *dn_log_port_id;
1acf2318
JBT		 3273 int i = 0;
3274
61c7a080 3275 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3276 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3277
40cd3a45 3278 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3279 NULL);
1acf2318 3280 if (!dn_log_port_id) {
8c4877a4
JP		 3281 pr_err("bad device node: eth_dn name=%s\n",
3282 eth_dn->full_name);
1acf2318
JBT		 3283 continue;
3284 }
7a291083 3285
1211bb6d 3286 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3287 pr_err("creating MR failed\n");
1211bb6d
TK		 3288 of_node_put(eth_dn);
3289 return -EIO;
3290 }
3291
1acf2318
JBT		 3292 adapter->port[i] = ehea_setup_single_port(adapter,
3293 *dn_log_port_id,
3294 eth_dn);
7a291083 3295 if (adapter->port[i])
8c4877a4
JP		 3296 netdev_info(adapter->port[i]->netdev,
3297 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3298 else
3299 ehea_remove_adapter_mr(adapter);
3300
1acf2318 3301 i++;
ee289b64 3302 }
1211bb6d 3303 return 0;
1acf2318
JBT		 3304}
3305
e542aa6b
JBT		 3306static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3307 u32 logical_port_id)
1acf2318
JBT		 3308{
3309 struct device_node *lhea_dn;
3310 struct device_node *eth_dn = NULL;
9f9a3b8a 3311 const u32 *dn_log_port_id;
1acf2318 3312
61c7a080 3313 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3314 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3315
40cd3a45 3316 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3317 NULL);
1acf2318
JBT		 3318 if (dn_log_port_id)
3319 if (*dn_log_port_id == logical_port_id)
3320 return eth_dn;
ee289b64 3321 }
1acf2318
JBT		 3322
3323 return NULL;
3324}
3325
3326static ssize_t ehea_probe_port(struct device *dev,
3327 struct device_attribute *attr,
3328 const char *buf, size_t count)
3329{
c7ae011d 3330 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3331 struct ehea_port *port;
3332 struct device_node *eth_dn = NULL;
3333 int i;
3334
3335 u32 logical_port_id;
3336
a8e34fda 3337 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3338
3339 port = ehea_get_port(adapter, logical_port_id);
3340
3341 if (port) {
8c4877a4
JP		 3342 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3343 logical_port_id);
1acf2318 3344 return -EINVAL;
7a291083 3345 }
e542aa6b 3346
1acf2318 3347 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3348
1acf2318 3349 if (!eth_dn) {
8c4877a4 3350 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3351 return -EINVAL;
3352 }
e542aa6b 3353
1211bb6d 3354 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3355 pr_err("creating MR failed\n");
1211bb6d
TK		 3356 return -EIO;
3357 }
3358
1acf2318 3359 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3360
1eef4e04
JBT		 3361 of_node_put(eth_dn);
3362
1acf2318 3363 if (port) {
508d2b5d 3364 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3365 if (!adapter->port[i]) {
3366 adapter->port[i] = port;
3367 break;
3368 }
7a291083 3369
8c4877a4
JP		 3370 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3371 logical_port_id);
1211bb6d
TK		 3372 } else {
3373 ehea_remove_adapter_mr(adapter);
e542aa6b 3374 return -EIO;
1211bb6d 3375 }
7a291083 3376
1acf2318
JBT		 3377 return (ssize_t) count;
3378}
3379
3380static ssize_t ehea_remove_port(struct device *dev,
3381 struct device_attribute *attr,
3382 const char *buf, size_t count)
3383{
c7ae011d 3384 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3385 struct ehea_port *port;
3386 int i;
3387 u32 logical_port_id;
3388
a8e34fda 3389 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3390
3391 port = ehea_get_port(adapter, logical_port_id);
3392
3393 if (port) {
8c4877a4
JP		 3394 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3395 logical_port_id);
1acf2318
JBT		 3396
3397 ehea_shutdown_single_port(port);
3398
508d2b5d 3399 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3400 if (adapter->port[i] == port) {
3401 adapter->port[i] = NULL;
3402 break;
3403 }
3404 } else {
8c4877a4
JP		 3405 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3406 logical_port_id);
1acf2318
JBT		 3407 return -EINVAL;
3408 }
3409
1211bb6d
TK		 3410 ehea_remove_adapter_mr(adapter);
3411
1acf2318
JBT		 3412 return (ssize_t) count;
3413}
3414
3415static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3416static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3417
2dc11581 3418int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3419{
6b08f3ae 3420 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3421 if (ret)
3422 goto out;
3423
6b08f3ae 3424 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3425out:
7a291083
JBT		 3426 return ret;
3427}
3428
2dc11581 3429void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3430{
6b08f3ae
JF		 3431 device_remove_file(&dev->dev, &dev_attr_probe_port);
3432 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3433}
3434
2dc11581 3435static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3436 const struct of_device_id *id)
7a291083
JBT		 3437{
3438 struct ehea_adapter *adapter;
9f9a3b8a 3439 const u64 *adapter_handle;
7a291083
JBT		 3440 int ret;
3441
61c7a080 3442 if (!dev || !dev->dev.of_node) {
8c4877a4 3443 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3444 return -EINVAL;
3445 }
3446
7a291083
JBT		 3447 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3448 if (!adapter) {
3449 ret = -ENOMEM;
6b08f3ae 3450 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3451 goto out;
3452 }
3453
44c82152
TK		 3454 list_add(&adapter->list, &adapter_list);
3455
6b08f3ae 3456 adapter->ofdev = dev;
1acf2318 3457
61c7a080 3458 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3459 NULL);
061bf3cd
TK		 3460 if (adapter_handle)
3461 adapter->handle = *adapter_handle;
3462
3463 if (!adapter->handle) {
6b08f3ae 3464 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3465 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3466 ret = -ENODEV;
3467 goto out_free_ad;
3468 }
3469
7a291083
JBT		 3470 adapter->pd = EHEA_PD_ID;
3471
c7ae011d 3472 dev_set_drvdata(&dev->dev, adapter);
7a291083 3473
7a291083
JBT		 3474
3475 /* initialize adapter and ports */
3476 /* get adapter properties */
3477 ret = ehea_sense_adapter_attr(adapter);
3478 if (ret) {
898eb71c 3479 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3480 goto out_free_ad;
7a291083 3481 }
7a291083
JBT		 3482
3483 adapter->neq = ehea_create_eq(adapter,
3484 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3485 if (!adapter->neq) {
1eef4e04 3486 ret = -EIO;
898eb71c 3487 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3488 goto out_free_ad;
7a291083
JBT		 3489 }
3490
3491 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3492 (unsigned long)adapter);
3493
6b08f3ae 3494 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3495 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3496 "ehea_neq", adapter);
3497 if (ret) {
898eb71c 3498 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3499 goto out_kill_eq;
3500 }
3501
1eef4e04
JBT		 3502 ret = ehea_create_device_sysfs(dev);
3503 if (ret)
3bf76b81 3504 goto out_free_irq;
1acf2318 3505
7a291083
JBT		 3506 ret = ehea_setup_ports(adapter);
3507 if (ret) {
898eb71c 3508 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3509 goto out_rem_dev_sysfs;
7a291083
JBT		 3510 }
3511
3512 ret = 0;
3513 goto out;
3514
1acf2318
JBT		 3515out_rem_dev_sysfs:
3516 ehea_remove_device_sysfs(dev);
3517
7a291083 3518out_free_irq:
6b08f3ae 3519 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3520
3521out_kill_eq:
3522 ehea_destroy_eq(adapter->neq);
3523
7a291083 3524out_free_ad:
51621fbd 3525 list_del(&adapter->list);
7a291083 3526 kfree(adapter);
21eee2dd 3527
7a291083 3528out:
21eee2dd 3529 ehea_update_firmware_handles();
52e21b1b 3530
7a291083
JBT		 3531 return ret;
3532}
3533
2dc11581 3534static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3535{
c7ae011d 3536 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3537 int i;
3538
1acf2318 3539 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3540 if (adapter->port[i]) {
3541 ehea_shutdown_single_port(adapter->port[i]);
3542 adapter->port[i] = NULL;
3543 }
1acf2318
JBT		 3544
3545 ehea_remove_device_sysfs(dev);
3546
6b08f3ae 3547 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3548 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3549
3550 ehea_destroy_eq(adapter->neq);
1211bb6d 3551 ehea_remove_adapter_mr(adapter);
44c82152 3552 list_del(&adapter->list);
7a291083 3553 kfree(adapter);
44c82152 3554
21eee2dd 3555 ehea_update_firmware_handles();
21eee2dd 3556
7a291083
JBT		 3557 return 0;
3558}
3559
21eee2dd
TK		 3560void ehea_crash_handler(void)
3561{
3562 int i;
3563
3564 if (ehea_fw_handles.arr)
3565 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3566 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3567 ehea_fw_handles.arr[i].fwh,
3568 FORCE_FREE);
3569
3570 if (ehea_bcmc_regs.arr)
3571 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3572 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3573 ehea_bcmc_regs.arr[i].port_id,
3574 ehea_bcmc_regs.arr[i].reg_type,
3575 ehea_bcmc_regs.arr[i].macaddr,
3576 0, H_DEREG_BCMC);
3577}
3578
48cfb14f
HH		 3579static int ehea_mem_notifier(struct notifier_block *nb,
3580 unsigned long action, void *data)
3581{
a7c561f2 3582 int ret = NOTIFY_BAD;
d4f12daf 3583 struct memory_notify *arg = data;
a7c561f2 3584
099473c1 3585 mutex_lock(&dlpar_mem_lock);
a7c561f2 3586
48cfb14f 3587 switch (action) {
d4f12daf 3588 case MEM_CANCEL_OFFLINE:
8c4877a4 3589 pr_info("memory offlining canceled");
d4f12daf
HH		 3590 /* Readd canceled memory block */
3591 case MEM_ONLINE:
8c4877a4 3592 pr_info("memory is going online");
3876732c 3593 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3594 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3595 goto out_unlock;
3d6b892b 3596 ehea_rereg_mrs();
d4f12daf
HH		 3597 break;
3598 case MEM_GOING_OFFLINE:
8c4877a4 3599 pr_info("memory is going offline");
3876732c 3600 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3601 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3602 goto out_unlock;
3d6b892b 3603 ehea_rereg_mrs();
48cfb14f
HH		 3604 break;
3605 default:
3606 break;
3607 }
52e21b1b
JBT		 3608
3609 ehea_update_firmware_handles();
a7c561f2 3610 ret = NOTIFY_OK;
52e21b1b 3611
a7c561f2
TK		 3612out_unlock:
3613 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3614 return ret;
48cfb14f
HH		 3615}
3616
3617static struct notifier_block ehea_mem_nb = {
3618 .notifier_call = ehea_mem_notifier,
3619};
3620
2a6f4e49
JBT		 3621static int ehea_reboot_notifier(struct notifier_block *nb,
3622 unsigned long action, void *unused)
3623{
3624 if (action == SYS_RESTART) {
8c4877a4 3625 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3626 ibmebus_unregister_driver(&ehea_driver);
3627 }
3628 return NOTIFY_DONE;
3629}
3630
3631static struct notifier_block ehea_reboot_nb = {
508d2b5d 3632 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3633};
3634
7a291083
JBT		 3635static int check_module_parm(void)
3636{
3637 int ret = 0;
3638
3639 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3640 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3641 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3642 ret = -EINVAL;
3643 }
3644 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3645 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3646 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3647 ret = -EINVAL;
3648 }
3649 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3650 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3651 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3652 ret = -EINVAL;
3653 }
3654 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3655 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3656 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3657 ret = -EINVAL;
3658 }
3659
3660 return ret;
3661}
3662
4c3ca4da
JBT		 3663static ssize_t ehea_show_capabilities(struct device_driver *drv,
3664 char *buf)
3665{
3666 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3667}
3668
3669static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3670 ehea_show_capabilities, NULL);
3671
7a291083
JBT		 3672int __init ehea_module_init(void)
3673{
3674 int ret;
3675
8c4877a4 3676 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3677
21eee2dd
TK		 3678 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3679 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3680
9f71a568 3681 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3682 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3683
7a291083
JBT		 3684 ret = check_module_parm();
3685 if (ret)
3686 goto out;
44c82152
TK		 3687
3688 ret = ehea_create_busmap();
3689 if (ret)
3690 goto out;
3691
21eee2dd
TK		 3692 ret = register_reboot_notifier(&ehea_reboot_nb);
3693 if (ret)
8c4877a4 3694 pr_info("failed registering reboot notifier\n");
21eee2dd 3695
48cfb14f
HH		 3696 ret = register_memory_notifier(&ehea_mem_nb);
3697 if (ret)
8c4877a4 3698 pr_info("failed registering memory remove notifier\n");
48cfb14f 3699
c061b18d 3700 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3701 if (ret)
8c4877a4 3702 pr_info("failed registering crash handler\n");
2a6f4e49 3703
7a291083 3704 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3705 if (ret) {
8c4877a4 3706 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3707 goto out2;
4c3ca4da
JBT		 3708 }
3709
3710 ret = driver_create_file(&ehea_driver.driver,
3711 &driver_attr_capabilities);
3712 if (ret) {
8c4877a4
JP		 3713 pr_err("failed to register capabilities attribute, ret=%d\n",
3714 ret);
21eee2dd 3715 goto out3;
4c3ca4da 3716 }
7a291083 3717
21eee2dd
TK		 3718 return ret;
3719
3720out3:
3721 ibmebus_unregister_driver(&ehea_driver);
3722out2:
48cfb14f 3723 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3724 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3725 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3726out:
3727 return ret;
3728}
3729
3730static void __exit ehea_module_exit(void)
3731{
21eee2dd
TK		 3732 int ret;
3733
4c3ca4da 3734 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3735 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3736 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3737 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3738 if (ret)
8c4877a4 3739 pr_info("failed unregistering crash handler\n");
48cfb14f 3740 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3741 kfree(ehea_fw_handles.arr);
3742 kfree(ehea_bcmc_regs.arr);
44c82152 3743 ehea_destroy_busmap();
7a291083
JBT		 3744}
3745
3746module_init(ehea_module_init);
3747module_exit(ehea_module_exit);
Linux kernel - Deliverables
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