]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/net/ethernet/ibm/ehea/ehea_main.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: vlan: prepare for 802.1ad VLAN filtering offload
[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / ibm / ehea / ehea_main.c
CommitLineData
7a291083 1/*
3396c782 2 * linux/drivers/net/ethernet/ibm/ehea/ehea_main.c
7a291083
JBT		 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 prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
7a291083
JBT		 74
75MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 76MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
77 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083 78MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
31d17536 79 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
81MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
31d17536 82 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
84MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
31d17536 85 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
87MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
31d17536 88 "[2^x - 1], x = [7..14]. Default = "
7a291083 89 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
b9564468
AB		 90MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
91 "Default = 1");
7a291083 92
508d2b5d 93static int port_name_cnt;
44c82152 94static LIST_HEAD(adapter_list);
48e4cc77 95static unsigned long ehea_driver_flags;
06f89edf 96static DEFINE_MUTEX(dlpar_mem_lock);
1886e5d2
TLSC		 97static struct ehea_fw_handle_array ehea_fw_handles;
98static struct ehea_bcmc_reg_array ehea_bcmc_regs;
21eee2dd 99
d1dea38d 100
0297be07 101static int ehea_probe_adapter(struct platform_device *dev,
1dd06ae8 102 const struct of_device_id *id);
d1dea38d 103
0297be07 104static int ehea_remove(struct platform_device *dev);
d1dea38d
TK		 105
106static struct of_device_id ehea_device_table[] = {
107 {
108 .name = "lhea",
109 .compatible = "IBM,lhea",
110 },
111 {},
112};
b0afffe8 113MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 114
6b08f3ae 115static struct of_platform_driver ehea_driver = {
4018294b
GL		 116 .driver = {
117 .name = "ehea",
118 .owner = THIS_MODULE,
119 .of_match_table = ehea_device_table,
120 },
d1dea38d
TK		 121 .probe = ehea_probe_adapter,
122 .remove = ehea_remove,
123};
124
508d2b5d
DM		 125void ehea_dump(void *adr, int len, char *msg)
126{
7a291083
JBT		 127 int x;
128 unsigned char *deb = adr;
129 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 130 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
131 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 132 deb += 16;
133 }
134}
135
1886e5d2 136static void ehea_schedule_port_reset(struct ehea_port *port)
2f69ae01
JBT		 137{
138 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
139 schedule_work(&port->reset_task);
140}
141
21eee2dd
TK		 142static void ehea_update_firmware_handles(void)
143{
144 struct ehea_fw_handle_entry *arr = NULL;
145 struct ehea_adapter *adapter;
146 int num_adapters = 0;
147 int num_ports = 0;
148 int num_portres = 0;
149 int i = 0;
150 int num_fw_handles, k, l;
151
152 /* Determine number of handles */
52e21b1b
JBT		 153 mutex_lock(&ehea_fw_handles.lock);
154
21eee2dd
TK		 155 list_for_each_entry(adapter, &adapter_list, list) {
156 num_adapters++;
157
158 for (k = 0; k < EHEA_MAX_PORTS; k++) {
159 struct ehea_port *port = adapter->port[k];
160
161 if (!port || (port->state != EHEA_PORT_UP))
162 continue;
163
164 num_ports++;
723f28e4 165 num_portres += port->num_def_qps;
21eee2dd
TK		 166 }
167 }
168
169 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
170 num_ports * EHEA_NUM_PORT_FW_HANDLES +
171 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
172
173 if (num_fw_handles) {
baeb2ffa 174 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 175 if (!arr)
52e21b1b 176 goto out; /* Keep the existing array */
21eee2dd
TK		 177 } else
178 goto out_update;
179
180 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 181 if (num_adapters == 0)
182 break;
183
21eee2dd
TK		 184 for (k = 0; k < EHEA_MAX_PORTS; k++) {
185 struct ehea_port *port = adapter->port[k];
186
8e95a202
JP		 187 if (!port || (port->state != EHEA_PORT_UP) ||
188 (num_ports == 0))
21eee2dd
TK		 189 continue;
190
723f28e4 191 for (l = 0; l < port->num_def_qps; l++) {
21eee2dd
TK		 192 struct ehea_port_res *pr = &port->port_res[l];
193
194 arr[i].adh = adapter->handle;
195 arr[i++].fwh = pr->qp->fw_handle;
196 arr[i].adh = adapter->handle;
197 arr[i++].fwh = pr->send_cq->fw_handle;
198 arr[i].adh = adapter->handle;
199 arr[i++].fwh = pr->recv_cq->fw_handle;
200 arr[i].adh = adapter->handle;
201 arr[i++].fwh = pr->eq->fw_handle;
202 arr[i].adh = adapter->handle;
203 arr[i++].fwh = pr->send_mr.handle;
204 arr[i].adh = adapter->handle;
205 arr[i++].fwh = pr->recv_mr.handle;
206 }
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 209 num_ports--;
21eee2dd
TK		 210 }
211
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = adapter->neq->fw_handle;
214
215 if (adapter->mr.handle) {
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = adapter->mr.handle;
218 }
52e21b1b 219 num_adapters--;
21eee2dd
TK		 220 }
221
222out_update:
223 kfree(ehea_fw_handles.arr);
224 ehea_fw_handles.arr = arr;
225 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 226out:
227 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 228}
229
230static void ehea_update_bcmc_registrations(void)
231{
52e21b1b 232 unsigned long flags;
21eee2dd
TK		 233 struct ehea_bcmc_reg_entry *arr = NULL;
234 struct ehea_adapter *adapter;
235 struct ehea_mc_list *mc_entry;
236 int num_registrations = 0;
237 int i = 0;
238 int k;
239
52e21b1b
JBT		 240 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
241
21eee2dd
TK		 242 /* Determine number of registrations */
243 list_for_each_entry(adapter, &adapter_list, list)
244 for (k = 0; k < EHEA_MAX_PORTS; k++) {
245 struct ehea_port *port = adapter->port[k];
246
247 if (!port || (port->state != EHEA_PORT_UP))
248 continue;
249
250 num_registrations += 2; /* Broadcast registrations */
251
252 list_for_each_entry(mc_entry, &port->mc_list->list,list)
253 num_registrations += 2;
254 }
255
256 if (num_registrations) {
baeb2ffa 257 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 258 if (!arr)
52e21b1b 259 goto out; /* Keep the existing array */
21eee2dd
TK		 260 } else
261 goto out_update;
262
263 list_for_each_entry(adapter, &adapter_list, list) {
264 for (k = 0; k < EHEA_MAX_PORTS; k++) {
265 struct ehea_port *port = adapter->port[k];
266
267 if (!port || (port->state != EHEA_PORT_UP))
268 continue;
269
52e21b1b
JBT		 270 if (num_registrations == 0)
271 goto out_update;
272
21eee2dd
TK		 273 arr[i].adh = adapter->handle;
274 arr[i].port_id = port->logical_port_id;
275 arr[i].reg_type = EHEA_BCMC_BROADCAST |
276 EHEA_BCMC_UNTAGGED;
277 arr[i++].macaddr = port->mac_addr;
278
279 arr[i].adh = adapter->handle;
280 arr[i].port_id = port->logical_port_id;
281 arr[i].reg_type = EHEA_BCMC_BROADCAST |
282 EHEA_BCMC_VLANID_ALL;
283 arr[i++].macaddr = port->mac_addr;
52e21b1b 284 num_registrations -= 2;
21eee2dd
TK		 285
286 list_for_each_entry(mc_entry,
287 &port->mc_list->list, list) {
52e21b1b
JBT		 288 if (num_registrations == 0)
289 goto out_update;
290
21eee2dd
TK		 291 arr[i].adh = adapter->handle;
292 arr[i].port_id = port->logical_port_id;
5d384574 293 arr[i].reg_type = EHEA_BCMC_MULTICAST |
21eee2dd 294 EHEA_BCMC_UNTAGGED;
5d384574
TLSC		 295 if (mc_entry->macaddr == 0)
296 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
21eee2dd
TK		 297 arr[i++].macaddr = mc_entry->macaddr;
298
299 arr[i].adh = adapter->handle;
300 arr[i].port_id = port->logical_port_id;
5d384574 301 arr[i].reg_type = EHEA_BCMC_MULTICAST |
21eee2dd 302 EHEA_BCMC_VLANID_ALL;
5d384574
TLSC		 303 if (mc_entry->macaddr == 0)
304 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
21eee2dd 305 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 306 num_registrations -= 2;
21eee2dd
TK		 307 }
308 }
309 }
310
311out_update:
312 kfree(ehea_bcmc_regs.arr);
313 ehea_bcmc_regs.arr = arr;
314 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 315out:
316 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 317}
318
239c562c
AB		 319static struct rtnl_link_stats64 *ehea_get_stats64(struct net_device *dev,
320 struct rtnl_link_stats64 *stats)
7a291083
JBT		 321{
322 struct ehea_port *port = netdev_priv(dev);
2aefcad8 323 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 324 int i;
325
2aefcad8 326 for (i = 0; i < port->num_def_qps; i++) {
327 rx_packets += port->port_res[i].rx_packets;
328 rx_bytes += port->port_res[i].rx_bytes;
329 }
330
723f28e4 331 for (i = 0; i < port->num_def_qps; i++) {
2aefcad8 332 tx_packets += port->port_res[i].tx_packets;
333 tx_bytes += port->port_res[i].tx_bytes;
334 }
335
336 stats->tx_packets = tx_packets;
337 stats->rx_bytes = rx_bytes;
338 stats->tx_bytes = tx_bytes;
339 stats->rx_packets = rx_packets;
340
09c1d446
ED		 341 stats->multicast = port->stats.multicast;
342 stats->rx_errors = port->stats.rx_errors;
343 return stats;
2aefcad8 344}
345
346static void ehea_update_stats(struct work_struct *work)
347{
348 struct ehea_port *port =
349 container_of(work, struct ehea_port, stats_work.work);
350 struct net_device *dev = port->netdev;
239c562c 351 struct rtnl_link_stats64 *stats = &port->stats;
2aefcad8 352 struct hcp_ehea_port_cb2 *cb2;
353 u64 hret;
7a291083 354
3d8009c7 355 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 356 if (!cb2) {
2aefcad8 357 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
358 goto resched;
7a291083
JBT		 359 }
360
361 hret = ehea_h_query_ehea_port(port->adapter->handle,
362 port->logical_port_id,
363 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
364 if (hret != H_SUCCESS) {
8c4877a4 365 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 366 goto out_herr;
367 }
368
369 if (netif_msg_hw(port))
370 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
371
7a291083
JBT		 372 stats->multicast = cb2->rxmcp;
373 stats->rx_errors = cb2->rxuerr;
7a291083
JBT		 374
375out_herr:
3faf2693 376 free_page((unsigned long)cb2);
2aefcad8 377resched:
67c170a2
AB		 378 schedule_delayed_work(&port->stats_work,
379 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 380}
381
382static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
383{
384 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
385 struct net_device *dev = pr->port->netdev;
386 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 387 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
388 int adder = 0;
7a291083
JBT		 389 int i;
390
2c69448b
JBT		 391 pr->rq1_skba.os_skbs = 0;
392
393 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 394 if (nr_of_wqes > 0)
395 pr->rq1_skba.index = index;
2c69448b 396 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 397 return;
2c69448b 398 }
7a291083 399
2c69448b 400 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 401 if (!skb_arr_rq1[index]) {
402 skb_arr_rq1[index] = netdev_alloc_skb(dev,
403 EHEA_L_PKT_SIZE);
404 if (!skb_arr_rq1[index]) {
2c69448b 405 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 406 break;
407 }
408 }
409 index--;
410 index &= max_index_mask;
2c69448b 411 adder++;
7a291083 412 }
2c69448b
JBT		 413
414 if (adder == 0)
415 return;
416
7a291083 417 /* Ring doorbell */
2c69448b 418 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 419}
420
e2878806 421static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 422{
7a291083
JBT		 423 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
424 struct net_device *dev = pr->port->netdev;
425 int i;
426
5c7e57f7 427 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 428 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 429 return;
430 }
431
432 for (i = 0; i < nr_rq1a; i++) {
7a291083 433 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
720a43ef 434 if (!skb_arr_rq1[i])
e2878806 435 break;
7a291083
JBT		 436 }
437 /* Ring doorbell */
f76957fc 438 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 439}
440
441static int ehea_refill_rq_def(struct ehea_port_res *pr,
442 struct ehea_q_skb_arr *q_skba, int rq_nr,
443 int num_wqes, int wqe_type, int packet_size)
444{
445 struct net_device *dev = pr->port->netdev;
446 struct ehea_qp *qp = pr->qp;
447 struct sk_buff **skb_arr = q_skba->arr;
448 struct ehea_rwqe *rwqe;
449 int i, index, max_index_mask, fill_wqes;
2c69448b 450 int adder = 0;
7a291083
JBT		 451 int ret = 0;
452
453 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 454 q_skba->os_skbs = 0;
7a291083 455
2c69448b
JBT		 456 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
457 q_skba->os_skbs = fill_wqes;
7a291083 458 return ret;
2c69448b 459 }
7a291083
JBT		 460
461 index = q_skba->index;
462 max_index_mask = q_skba->len - 1;
463 for (i = 0; i < fill_wqes; i++) {
2c69448b 464 u64 tmp_addr;
89d71a66
ED		 465 struct sk_buff *skb;
466
467 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 468 if (!skb) {
7a291083 469 q_skba->os_skbs = fill_wqes - i;
e2878806 470 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 471 netdev_info(pr->port->netdev,
472 "rq%i ran dry - no mem for skb\n",
473 rq_nr);
e2878806
TK		 474 ret = -ENOMEM;
475 }
7a291083
JBT		 476 break;
477 }
7a291083
JBT		 478
479 skb_arr[index] = skb;
2c69448b
JBT		 480 tmp_addr = ehea_map_vaddr(skb->data);
481 if (tmp_addr == -1) {
482 dev_kfree_skb(skb);
483 q_skba->os_skbs = fill_wqes - i;
484 ret = 0;
485 break;
486 }
7a291083
JBT		 487
488 rwqe = ehea_get_next_rwqe(qp, rq_nr);
489 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 490 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 491 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 492 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 493 rwqe->sg_list[0].len = packet_size;
494 rwqe->data_segments = 1;
495
496 index++;
497 index &= max_index_mask;
2c69448b 498 adder++;
7a291083 499 }
44c82152 500
7a291083 501 q_skba->index = index;
2c69448b
JBT		 502 if (adder == 0)
503 goto out;
7a291083
JBT		 504
505 /* Ring doorbell */
506 iosync();
507 if (rq_nr == 2)
2c69448b 508 ehea_update_rq2a(pr->qp, adder);
7a291083 509 else
2c69448b 510 ehea_update_rq3a(pr->qp, adder);
44c82152 511out:
7a291083
JBT		 512 return ret;
513}
514
515
516static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
517{
518 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
519 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 520 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 521}
522
523
524static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
525{
526 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
527 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 528 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 529}
530
531static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
532{
533 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
534 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
535 return 0;
536 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
537 (cqe->header_length == 0))
538 return 0;
539 return -EINVAL;
540}
541
542static inline void ehea_fill_skb(struct net_device *dev,
b9564468
AB		 543 struct sk_buff *skb, struct ehea_cqe *cqe,
544 struct ehea_port_res *pr)
7a291083
JBT		 545{
546 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
547
548 skb_put(skb, length);
7a291083 549 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 550
551 /* The packet was not an IPV4 packet so a complemented checksum was
552 calculated. The value is found in the Internet Checksum field. */
553 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
554 skb->ip_summed = CHECKSUM_COMPLETE;
555 skb->csum = csum_unfold(~cqe->inet_checksum_value);
556 } else
557 skb->ip_summed = CHECKSUM_UNNECESSARY;
b9564468
AB		 558
559 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
7a291083
JBT		 560}
561
562static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
563 int arr_len,
564 struct ehea_cqe *cqe)
565{
566 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
567 struct sk_buff *skb;
568 void *pref;
569 int x;
570
571 x = skb_index + 1;
572 x &= (arr_len - 1);
573
574 pref = skb_array[x];
0b2febf3
HH		 575 if (pref) {
576 prefetchw(pref);
577 prefetchw(pref + EHEA_CACHE_LINE);
578
579 pref = (skb_array[x]->data);
580 prefetch(pref);
581 prefetch(pref + EHEA_CACHE_LINE);
582 prefetch(pref + EHEA_CACHE_LINE * 2);
583 prefetch(pref + EHEA_CACHE_LINE * 3);
584 }
585
7a291083
JBT		 586 skb = skb_array[skb_index];
587 skb_array[skb_index] = NULL;
588 return skb;
589}
590
591static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
592 int arr_len, int wqe_index)
593{
594 struct sk_buff *skb;
595 void *pref;
596 int x;
597
598 x = wqe_index + 1;
599 x &= (arr_len - 1);
600
601 pref = skb_array[x];
0b2febf3
HH		 602 if (pref) {
603 prefetchw(pref);
604 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 605
0b2febf3
HH		 606 pref = (skb_array[x]->data);
607 prefetchw(pref);
608 prefetchw(pref + EHEA_CACHE_LINE);
609 }
7a291083
JBT		 610
611 skb = skb_array[wqe_index];
612 skb_array[wqe_index] = NULL;
613 return skb;
614}
615
616static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
617 struct ehea_cqe *cqe, int *processed_rq2,
618 int *processed_rq3)
619{
620 struct sk_buff *skb;
621
acbddb59
JBT		 622 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
623 pr->p_stats.err_tcp_cksum++;
624 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
625 pr->p_stats.err_ip_cksum++;
626 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
627 pr->p_stats.err_frame_crc++;
628
7a291083
JBT		 629 if (rq == 2) {
630 *processed_rq2 += 1;
631 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
632 dev_kfree_skb(skb);
633 } else if (rq == 3) {
634 *processed_rq3 += 1;
635 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
636 dev_kfree_skb(skb);
637 }
638
639 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 640 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 641 pr_err("Critical receive error for QP %d. Resetting port.\n",
642 pr->qp->init_attr.qp_nr);
58dd8258
TK		 643 ehea_dump(cqe, sizeof(*cqe), "CQE");
644 }
2f69ae01 645 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 646 return 1;
647 }
648
649 return 0;
650}
651
bea3348e
SH		 652static int ehea_proc_rwqes(struct net_device *dev,
653 struct ehea_port_res *pr,
654 int budget)
7a291083 655{
18604c54 656 struct ehea_port *port = pr->port;
7a291083
JBT		 657 struct ehea_qp *qp = pr->qp;
658 struct ehea_cqe *cqe;
659 struct sk_buff *skb;
660 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
661 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
662 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
663 int skb_arr_rq1_len = pr->rq1_skba.len;
664 int skb_arr_rq2_len = pr->rq2_skba.len;
665 int skb_arr_rq3_len = pr->rq3_skba.len;
666 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 667 u64 processed_bytes = 0;
bea3348e 668 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 669
670 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
671 last_wqe_index = 0;
7a291083 672
7a291083 673 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 674 while ((processed < budget) && cqe) {
7a291083
JBT		 675 ehea_inc_rq1(qp);
676 processed_rq1++;
677 processed++;
7a291083
JBT		 678 if (netif_msg_rx_status(port))
679 ehea_dump(cqe, sizeof(*cqe), "CQE");
680
681 last_wqe_index = wqe_index;
682 rmb();
683 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 684 if (rq == 1) {
685 /* LL RQ1 */
7a291083
JBT		 686 skb = get_skb_by_index_ll(skb_arr_rq1,
687 skb_arr_rq1_len,
688 wqe_index);
689 if (unlikely(!skb)) {
782615ae 690 netif_info(port, rx_err, dev,
8c4877a4 691 "LL rq1: skb=NULL\n");
18604c54 692
bea3348e 693 skb = netdev_alloc_skb(dev,
7a291083 694 EHEA_L_PKT_SIZE);
720a43ef 695 if (!skb)
7a291083
JBT		 696 break;
697 }
508d2b5d 698 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 699 cqe->num_bytes_transfered - 4);
b9564468 700 ehea_fill_skb(dev, skb, cqe, pr);
508d2b5d
DM		 701 } else if (rq == 2) {
702 /* RQ2 */
7a291083
JBT		 703 skb = get_skb_by_index(skb_arr_rq2,
704 skb_arr_rq2_len, cqe);
705 if (unlikely(!skb)) {
8c4877a4
JP		 706 netif_err(port, rx_err, dev,
707 "rq2: skb=NULL\n");
7a291083
JBT		 708 break;
709 }
b9564468 710 ehea_fill_skb(dev, skb, cqe, pr);
7a291083 711 processed_rq2++;
508d2b5d
DM		 712 } else {
713 /* RQ3 */
7a291083
JBT		 714 skb = get_skb_by_index(skb_arr_rq3,
715 skb_arr_rq3_len, cqe);
716 if (unlikely(!skb)) {
8c4877a4
JP		 717 netif_err(port, rx_err, dev,
718 "rq3: skb=NULL\n");
7a291083
JBT		 719 break;
720 }
b9564468 721 ehea_fill_skb(dev, skb, cqe, pr);
7a291083
JBT		 722 processed_rq3++;
723 }
724
ce45b873 725 processed_bytes += skb->len;
3428414f
AB		 726
727 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
728 __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
729
730 napi_gro_receive(&pr->napi, skb);
18604c54 731 } else {
acbddb59 732 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 733 port_reset = ehea_treat_poll_error(pr, rq, cqe,
734 &processed_rq2,
735 &processed_rq3);
736 if (port_reset)
737 break;
738 }
739 cqe = ehea_poll_rq1(qp, &wqe_index);
740 }
741
7a291083 742 pr->rx_packets += processed;
ce45b873 743 pr->rx_bytes += processed_bytes;
7a291083
JBT		 744
745 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
746 ehea_refill_rq2(pr, processed_rq2);
747 ehea_refill_rq3(pr, processed_rq3);
748
bea3348e 749 return processed;
7a291083
JBT		 750}
751
2928db4c
AD		 752#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
753
754static void reset_sq_restart_flag(struct ehea_port *port)
755{
756 int i;
757
723f28e4 758 for (i = 0; i < port->num_def_qps; i++) {
2928db4c
AD		 759 struct ehea_port_res *pr = &port->port_res[i];
760 pr->sq_restart_flag = 0;
761 }
a8bb69f7 762 wake_up(&port->restart_wq);
2928db4c
AD		 763}
764
765static void check_sqs(struct ehea_port *port)
766{
767 struct ehea_swqe *swqe;
768 int swqe_index;
769 int i, k;
770
723f28e4 771 for (i = 0; i < port->num_def_qps; i++) {
2928db4c 772 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 773 int ret;
2928db4c
AD		 774 k = 0;
775 swqe = ehea_get_swqe(pr->qp, &swqe_index);
776 memset(swqe, 0, SWQE_HEADER_SIZE);
777 atomic_dec(&pr->swqe_avail);
778
779 swqe->tx_control |= EHEA_SWQE_PURGE;
780 swqe->wr_id = SWQE_RESTART_CHECK;
781 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
782 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
783 swqe->immediate_data_length = 80;
784
785 ehea_post_swqe(pr->qp, swqe);
786
a8bb69f7
BL		 787 ret = wait_event_timeout(port->restart_wq,
788 pr->sq_restart_flag == 0,
789 msecs_to_jiffies(100));
790
791 if (!ret) {
8c4877a4 792 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 793 ehea_schedule_port_reset(pr->port);
794 return;
2928db4c
AD		 795 }
796 }
2928db4c
AD		 797}
798
799
18604c54 800static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 801{
acbddb59 802 struct sk_buff *skb;
7a291083
JBT		 803 struct ehea_cq *send_cq = pr->send_cq;
804 struct ehea_cqe *cqe;
18604c54 805 int quota = my_quota;
7a291083
JBT		 806 int cqe_counter = 0;
807 int swqe_av = 0;
acbddb59 808 int index;
b9564468
AB		 809 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
810 pr - &pr->port->port_res[0]);
7a291083 811
18604c54 812 cqe = ehea_poll_cq(send_cq);
508d2b5d 813 while (cqe && (quota > 0)) {
18604c54
JBT		 814 ehea_inc_cq(send_cq);
815
7a291083
JBT		 816 cqe_counter++;
817 rmb();
2928db4c
AD		 818
819 if (cqe->wr_id == SWQE_RESTART_CHECK) {
820 pr->sq_restart_flag = 1;
821 swqe_av++;
822 break;
823 }
824
7a291083 825 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 826 pr_err("Bad send completion status=0x%04X\n",
827 cqe->status);
ea96ceac 828
7a291083
JBT		 829 if (netif_msg_tx_err(pr->port))
830 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 831
832 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 833 pr_err("Resetting port\n");
ea96ceac
TK		 834 ehea_schedule_port_reset(pr->port);
835 break;
836 }
7a291083
JBT		 837 }
838
839 if (netif_msg_tx_done(pr->port))
840 ehea_dump(cqe, sizeof(*cqe), "CQE");
841
842 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 843 == EHEA_SWQE2_TYPE)) {
844
845 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
846 skb = pr->sq_skba.arr[index];
847 dev_kfree_skb(skb);
848 pr->sq_skba.arr[index] = NULL;
849 }
7a291083
JBT		 850
851 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
852 quota--;
18604c54
JBT		 853
854 cqe = ehea_poll_cq(send_cq);
ee289b64 855 }
7a291083
JBT		 856
857 ehea_update_feca(send_cq, cqe_counter);
858 atomic_add(swqe_av, &pr->swqe_avail);
859
b9564468
AB		 860 if (unlikely(netif_tx_queue_stopped(txq) &&
861 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
862 __netif_tx_lock(txq, smp_processor_id());
863 if (netif_tx_queue_stopped(txq) &&
864 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
865 netif_tx_wake_queue(txq);
866 __netif_tx_unlock(txq);
7a291083 867 }
b9564468 868
5b27d427 869 wake_up(&pr->port->swqe_avail_wq);
7a291083 870
18604c54 871 return cqe;
7a291083
JBT		 872}
873
bea3348e 874#define EHEA_POLL_MAX_CQES 65535
18604c54 875
bea3348e 876static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 877{
508d2b5d
DM		 878 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
879 napi);
bea3348e 880 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 881 struct ehea_cqe *cqe;
882 struct ehea_cqe *cqe_skb = NULL;
222ca96b 883 int wqe_index;
bea3348e 884 int rx = 0;
18604c54 885
bea3348e 886 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
222ca96b 887 rx += ehea_proc_rwqes(dev, pr, budget - rx);
bea3348e 888
222ca96b 889 while (rx != budget) {
288379f0 890 napi_complete(napi);
18604c54
JBT		 891 ehea_reset_cq_ep(pr->recv_cq);
892 ehea_reset_cq_ep(pr->send_cq);
893 ehea_reset_cq_n1(pr->recv_cq);
894 ehea_reset_cq_n1(pr->send_cq);
a91fb143 895 rmb();
18604c54
JBT		 896 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
897 cqe_skb = ehea_poll_cq(pr->send_cq);
898
e542aa6b 899 if (!cqe && !cqe_skb)
bea3348e 900 return rx;
18604c54 901
288379f0 902 if (!napi_reschedule(napi))
bea3348e 903 return rx;
18604c54 904
bea3348e
SH		 905 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
906 rx += ehea_proc_rwqes(dev, pr, budget - rx);
907 }
e542aa6b 908
bea3348e 909 return rx;
7a291083
JBT		 910}
911
8d22c971
JBT		 912#ifdef CONFIG_NET_POLL_CONTROLLER
913static void ehea_netpoll(struct net_device *dev)
914{
915 struct ehea_port *port = netdev_priv(dev);
bea3348e 916 int i;
8d22c971 917
bea3348e 918 for (i = 0; i < port->num_def_qps; i++)
288379f0 919 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 920}
921#endif
922
7d12e780 923static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 924{
925 struct ehea_port_res *pr = param;
18604c54 926
288379f0 927 napi_schedule(&pr->napi);
18604c54 928
7a291083
JBT		 929 return IRQ_HANDLED;
930}
931
7d12e780 932static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 933{
934 struct ehea_port *port = param;
935 struct ehea_eqe *eqe;
d2db9eea 936 struct ehea_qp *qp;
7a291083 937 u32 qp_token;
ea96ceac
TK		 938 u64 resource_type, aer, aerr;
939 int reset_port = 0;
7a291083
JBT		 940
941 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 942
7a291083 943 while (eqe) {
7a291083 944 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 945 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
946 eqe->entry, qp_token);
d2db9eea
JBT		 947
948 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 949
950 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
951 &aer, &aerr);
952
953 if (resource_type == EHEA_AER_RESTYPE_QP) {
954 if ((aer & EHEA_AER_RESET_MASK) ||
955 (aerr & EHEA_AERR_RESET_MASK))
956 reset_port = 1;
957 } else
958 reset_port = 1; /* Reset in case of CQ or EQ error */
959
bb3a6449 960 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 961 }
962
ea96ceac 963 if (reset_port) {
8c4877a4 964 pr_err("Resetting port\n");
ea96ceac
TK		 965 ehea_schedule_port_reset(port);
966 }
d2db9eea 967
7a291083
JBT		 968 return IRQ_HANDLED;
969}
970
971static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
972 int logical_port)
973{
974 int i;
975
1acf2318 976 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 977 if (adapter->port[i])
d1d25aab 978 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 979 return adapter->port[i];
7a291083
JBT		 980 return NULL;
981}
982
983int ehea_sense_port_attr(struct ehea_port *port)
984{
985 int ret;
986 u64 hret;
987 struct hcp_ehea_port_cb0 *cb0;
988
508d2b5d 989 /* may be called via ehea_neq_tasklet() */
3faf2693 990 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 991 if (!cb0) {
8c4877a4 992 pr_err("no mem for cb0\n");
7a291083
JBT		 993 ret = -ENOMEM;
994 goto out;
995 }
996
997 hret = ehea_h_query_ehea_port(port->adapter->handle,
998 port->logical_port_id, H_PORT_CB0,
999 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1000 cb0);
1001 if (hret != H_SUCCESS) {
1002 ret = -EIO;
1003 goto out_free;
1004 }
1005
1006 /* MAC address */
1007 port->mac_addr = cb0->port_mac_addr << 16;
1008
508d2b5d 1009 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1010 ret = -EADDRNOTAVAIL;
1011 goto out_free;
1012 }
1013
1014 /* Port speed */
1015 switch (cb0->port_speed) {
1016 case H_SPEED_10M_H:
1017 port->port_speed = EHEA_SPEED_10M;
1018 port->full_duplex = 0;
1019 break;
1020 case H_SPEED_10M_F:
1021 port->port_speed = EHEA_SPEED_10M;
1022 port->full_duplex = 1;
1023 break;
1024 case H_SPEED_100M_H:
1025 port->port_speed = EHEA_SPEED_100M;
1026 port->full_duplex = 0;
1027 break;
1028 case H_SPEED_100M_F:
1029 port->port_speed = EHEA_SPEED_100M;
1030 port->full_duplex = 1;
1031 break;
1032 case H_SPEED_1G_F:
1033 port->port_speed = EHEA_SPEED_1G;
1034 port->full_duplex = 1;
1035 break;
1036 case H_SPEED_10G_F:
1037 port->port_speed = EHEA_SPEED_10G;
1038 port->full_duplex = 1;
1039 break;
1040 default:
1041 port->port_speed = 0;
1042 port->full_duplex = 0;
1043 break;
1044 }
1045
e919b593 1046 port->autoneg = 1;
18604c54 1047 port->num_mcs = cb0->num_default_qps;
e919b593 1048
7a291083 1049 /* Number of default QPs */
18604c54
JBT		 1050 if (use_mcs)
1051 port->num_def_qps = cb0->num_default_qps;
1052 else
1053 port->num_def_qps = 1;
7a291083
JBT		 1054
1055 if (!port->num_def_qps) {
1056 ret = -EINVAL;
1057 goto out_free;
1058 }
1059
7a291083
JBT		 1060 ret = 0;
1061out_free:
1062 if (ret || netif_msg_probe(port))
1063 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1064 free_page((unsigned long)cb0);
7a291083
JBT		 1065out:
1066 return ret;
1067}
1068
1069int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1070{
1071 struct hcp_ehea_port_cb4 *cb4;
1072 u64 hret;
1073 int ret = 0;
1074
3faf2693 1075 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1076 if (!cb4) {
8c4877a4 1077 pr_err("no mem for cb4\n");
7a291083
JBT		 1078 ret = -ENOMEM;
1079 goto out;
1080 }
1081
1082 cb4->port_speed = port_speed;
1083
1084 netif_carrier_off(port->netdev);
1085
1086 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1087 port->logical_port_id,
1088 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1089 if (hret == H_SUCCESS) {
1090 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1091
1092 hret = ehea_h_query_ehea_port(port->adapter->handle,
1093 port->logical_port_id,
1094 H_PORT_CB4, H_PORT_CB4_SPEED,
1095 cb4);
1096 if (hret == H_SUCCESS) {
1097 switch (cb4->port_speed) {
1098 case H_SPEED_10M_H:
1099 port->port_speed = EHEA_SPEED_10M;
1100 port->full_duplex = 0;
1101 break;
1102 case H_SPEED_10M_F:
1103 port->port_speed = EHEA_SPEED_10M;
1104 port->full_duplex = 1;
1105 break;
1106 case H_SPEED_100M_H:
1107 port->port_speed = EHEA_SPEED_100M;
1108 port->full_duplex = 0;
1109 break;
1110 case H_SPEED_100M_F:
1111 port->port_speed = EHEA_SPEED_100M;
1112 port->full_duplex = 1;
1113 break;
1114 case H_SPEED_1G_F:
1115 port->port_speed = EHEA_SPEED_1G;
1116 port->full_duplex = 1;
1117 break;
1118 case H_SPEED_10G_F:
1119 port->port_speed = EHEA_SPEED_10G;
1120 port->full_duplex = 1;
1121 break;
1122 default:
1123 port->port_speed = 0;
1124 port->full_duplex = 0;
1125 break;
1126 }
1127 } else {
8c4877a4 1128 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1129 ret = -EIO;
1130 }
1131 } else {
1132 if (hret == H_AUTHORITY) {
8c4877a4 1133 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1134 ret = -EPERM;
1135 } else {
1136 ret = -EIO;
8c4877a4 1137 pr_err("Failed setting port speed\n");
7a291083
JBT		 1138 }
1139 }
8759cf76
JBT		 1140 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1141 netif_carrier_on(port->netdev);
1142
3faf2693 1143 free_page((unsigned long)cb4);
7a291083
JBT		 1144out:
1145 return ret;
1146}
1147
1148static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1149{
1150 int ret;
1151 u8 ec;
1152 u8 portnum;
1153 struct ehea_port *port;
8c4877a4 1154 struct net_device *dev;
7a291083
JBT		 1155
1156 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1157 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1158 port = ehea_get_port(adapter, portnum);
8c4877a4 1159 dev = port->netdev;
7a291083
JBT		 1160
1161 switch (ec) {
1162 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1163
1164 if (!port) {
8c4877a4 1165 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1166 break;
1167 }
1168
1169 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1170 if (!netif_carrier_ok(dev)) {
1e1675cc 1171 ret = ehea_sense_port_attr(port);
7a291083 1172 if (ret) {
8c4877a4 1173 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1174 break;
1175 }
1176
8c4877a4
JP		 1177 netif_info(port, link, dev,
1178 "Logical port up: %dMbps %s Duplex\n",
1179 port->port_speed,
1180 port->full_duplex == 1 ?
1181 "Full" : "Half");
7a291083 1182
8c4877a4
JP		 1183 netif_carrier_on(dev);
1184 netif_wake_queue(dev);
7a291083
JBT		 1185 }
1186 } else
8c4877a4
JP		 1187 if (netif_carrier_ok(dev)) {
1188 netif_info(port, link, dev,
1189 "Logical port down\n");
1190 netif_carrier_off(dev);
b9564468 1191 netif_tx_disable(dev);
7a291083
JBT		 1192 }
1193
1194 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1195 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1196 netif_info(port, link, dev,
1197 "Physical port up\n");
8759cf76 1198 if (prop_carrier_state)
8c4877a4 1199 netif_carrier_on(dev);
7a291083 1200 } else {
8759cf76 1201 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1202 netif_info(port, link, dev,
1203 "Physical port down\n");
8759cf76 1204 if (prop_carrier_state)
8c4877a4 1205 netif_carrier_off(dev);
7a291083
JBT		 1206 }
1207
1208 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1209 netdev_info(dev,
1210 "External switch port is primary port\n");
7a291083 1211 else
8c4877a4
JP		 1212 netdev_info(dev,
1213 "External switch port is backup port\n");
7a291083
JBT		 1214
1215 break;
1216 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1217 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1218 break;
1219 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1220 netdev_info(dev, "Port malfunction\n");
1221 netif_carrier_off(dev);
b9564468 1222 netif_tx_disable(dev);
7a291083
JBT		 1223 break;
1224 default:
8c4877a4 1225 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
7a291083
JBT		 1226 break;
1227 }
1228}
1229
1230static void ehea_neq_tasklet(unsigned long data)
1231{
508d2b5d 1232 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1233 struct ehea_eqe *eqe;
1234 u64 event_mask;
1235
1236 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1237 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1238
1239 while (eqe) {
8c4877a4 1240 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1241 ehea_parse_eqe(adapter, eqe->entry);
1242 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1243 pr_debug("next eqe=%p\n", eqe);
7a291083
JBT		 1244 }
1245
1246 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1247 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1248 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1249
1250 ehea_h_reset_events(adapter->handle,
1251 adapter->neq->fw_handle, event_mask);
1252}
1253
7d12e780 1254static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1255{
1256 struct ehea_adapter *adapter = param;
1257 tasklet_hi_schedule(&adapter->neq_tasklet);
1258 return IRQ_HANDLED;
1259}
1260
1261
1262static int ehea_fill_port_res(struct ehea_port_res *pr)
1263{
1264 int ret;
1265 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1266
f76957fc 1267 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1268
e2878806 1269 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1270
1271 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1272
1273 return ret;
1274}
1275
1276static int ehea_reg_interrupts(struct net_device *dev)
1277{
1278 struct ehea_port *port = netdev_priv(dev);
1279 struct ehea_port_res *pr;
1280 int i, ret;
1281
7a291083
JBT		 1282
1283 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1284 dev->name);
1285
6b08f3ae 1286 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1287 ehea_qp_aff_irq_handler,
38515e90 1288 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1289 if (ret) {
8c4877a4
JP		 1290 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1291 port->qp_eq->attr.ist1);
7a291083
JBT		 1292 goto out_free_qpeq;
1293 }
1294
8c4877a4
JP		 1295 netif_info(port, ifup, dev,
1296 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1297 port->qp_eq->attr.ist1);
7a291083 1298
18604c54 1299
723f28e4 1300 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 1301 pr = &port->port_res[i];
1302 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1303 "%s-queue%d", dev->name, i);
6b08f3ae 1304 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1305 ehea_recv_irq_handler,
38515e90 1306 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1307 pr);
1308 if (ret) {
8c4877a4
JP		 1309 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1310 i, pr->eq->attr.ist1);
7a291083
JBT		 1311 goto out_free_req;
1312 }
8c4877a4
JP		 1313 netif_info(port, ifup, dev,
1314 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1315 pr->eq->attr.ist1, i);
7a291083
JBT		 1316 }
1317out:
1318 return ret;
1319
18604c54 1320
7a291083
JBT		 1321out_free_req:
1322 while (--i >= 0) {
18604c54 1323 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1324 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1325 }
18604c54 1326
7a291083 1327out_free_qpeq:
6b08f3ae 1328 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1329 i = port->num_def_qps;
18604c54 1330
7a291083 1331 goto out;
18604c54 1332
7a291083
JBT		 1333}
1334
1335static void ehea_free_interrupts(struct net_device *dev)
1336{
1337 struct ehea_port *port = netdev_priv(dev);
1338 struct ehea_port_res *pr;
1339 int i;
1340
1341 /* send */
18604c54 1342
723f28e4 1343 for (i = 0; i < port->num_def_qps; i++) {
7a291083 1344 pr = &port->port_res[i];
6b08f3ae 1345 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1346 netif_info(port, intr, dev,
1347 "free send irq for res %d with handle 0x%X\n",
1348 i, pr->eq->attr.ist1);
7a291083
JBT		 1349 }
1350
1351 /* associated events */
6b08f3ae 1352 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1353 netif_info(port, intr, dev,
1354 "associated event interrupt for handle 0x%X freed\n",
1355 port->qp_eq->attr.ist1);
7a291083
JBT		 1356}
1357
1358static int ehea_configure_port(struct ehea_port *port)
1359{
1360 int ret, i;
1361 u64 hret, mask;
1362 struct hcp_ehea_port_cb0 *cb0;
1363
1364 ret = -ENOMEM;
3faf2693 1365 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1366 if (!cb0)
1367 goto out;
1368
1369 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1370 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1371 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1372 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1373 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1374 PXLY_RC_VLAN_FILTER)
1375 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1376
18604c54
JBT		 1377 for (i = 0; i < port->num_mcs; i++)
1378 if (use_mcs)
1379 cb0->default_qpn_arr[i] =
1380 port->port_res[i].qp->init_attr.qp_nr;
1381 else
1382 cb0->default_qpn_arr[i] =
1383 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1384
7a291083
JBT		 1385 if (netif_msg_ifup(port))
1386 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1387
1388 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1389 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1390
1391 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1392 port->logical_port_id,
1393 H_PORT_CB0, mask, cb0);
1394 ret = -EIO;
1395 if (hret != H_SUCCESS)
1396 goto out_free;
1397
1398 ret = 0;
1399
1400out_free:
3faf2693 1401 free_page((unsigned long)cb0);
7a291083
JBT		 1402out:
1403 return ret;
1404}
1405
1886e5d2 1406static int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1407{
e542aa6b 1408 int ret;
7a291083
JBT		 1409 struct ehea_adapter *adapter = pr->port->adapter;
1410
e542aa6b
JBT		 1411 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1412 if (ret)
7a291083
JBT		 1413 goto out;
1414
e542aa6b
JBT		 1415 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1416 if (ret)
1417 goto out_free;
7a291083
JBT		 1418
1419 return 0;
1420
e542aa6b
JBT		 1421out_free:
1422 ehea_rem_mr(&pr->send_mr);
7a291083 1423out:
8c4877a4 1424 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1425 return -EIO;
1426}
1427
1886e5d2 1428static int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1429{
8e95a202
JP		 1430 if ((ehea_rem_mr(&pr->send_mr)) ||
1431 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1432 return -EIO;
1433 else
1434 return 0;
7a291083
JBT		 1435}
1436
1437static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1438{
508d2b5d 1439 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1440
89bf67f1 1441 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1442 if (!q_skba->arr)
1443 return -ENOMEM;
1444
7a291083
JBT		 1445 q_skba->len = max_q_entries;
1446 q_skba->index = 0;
1447 q_skba->os_skbs = 0;
1448
1449 return 0;
1450}
1451
1452static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1453 struct port_res_cfg *pr_cfg, int queue_token)
1454{
1455 struct ehea_adapter *adapter = port->adapter;
1456 enum ehea_eq_type eq_type = EHEA_EQ;
1457 struct ehea_qp_init_attr *init_attr = NULL;
1458 int ret = -EIO;
ce45b873
BL		 1459 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1460
1461 tx_bytes = pr->tx_bytes;
1462 tx_packets = pr->tx_packets;
1463 rx_bytes = pr->rx_bytes;
1464 rx_packets = pr->rx_packets;
7a291083
JBT		 1465
1466 memset(pr, 0, sizeof(struct ehea_port_res));
1467
ce45b873
BL		 1468 pr->tx_bytes = rx_bytes;
1469 pr->tx_packets = tx_packets;
1470 pr->rx_bytes = rx_bytes;
1471 pr->rx_packets = rx_packets;
1472
7a291083 1473 pr->port = port;
7a291083 1474
18604c54
JBT		 1475 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1476 if (!pr->eq) {
8c4877a4 1477 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1478 goto out_free;
1479 }
1480
1481 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1482 pr->eq->fw_handle,
7a291083
JBT		 1483 port->logical_port_id);
1484 if (!pr->recv_cq) {
8c4877a4 1485 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1486 goto out_free;
1487 }
1488
1489 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1490 pr->eq->fw_handle,
7a291083
JBT		 1491 port->logical_port_id);
1492 if (!pr->send_cq) {
8c4877a4 1493 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1494 goto out_free;
1495 }
1496
1497 if (netif_msg_ifup(port))
8c4877a4
JP		 1498 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1499 pr->send_cq->attr.act_nr_of_cqes,
1500 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1501
1502 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1503 if (!init_attr) {
1504 ret = -ENOMEM;
8c4877a4 1505 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1506 goto out_free;
1507 }
1508
1509 init_attr->low_lat_rq1 = 1;
1510 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1511 init_attr->rq_count = 3;
1512 init_attr->qp_token = queue_token;
1513 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1514 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1515 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1516 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1517 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1518 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1519 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1520 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1521 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1522 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1523 init_attr->port_nr = port->logical_port_id;
1524 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1525 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1526 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1527
1528 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1529 if (!pr->qp) {
8c4877a4 1530 pr_err("create_qp failed\n");
7a291083
JBT		 1531 ret = -EIO;
1532 goto out_free;
1533 }
1534
1535 if (netif_msg_ifup(port))
8c4877a4
JP		 1536 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",
1537 init_attr->qp_nr,
1538 init_attr->act_nr_send_wqes,
1539 init_attr->act_nr_rwqes_rq1,
1540 init_attr->act_nr_rwqes_rq2,
1541 init_attr->act_nr_rwqes_rq3);
7a291083 1542
44fb3126
TK		 1543 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1544
1545 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1546 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1547 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1548 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1549 if (ret)
1550 goto out_free;
1551
1552 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1553 if (ehea_gen_smrs(pr) != 0) {
1554 ret = -EIO;
1555 goto out_free;
1556 }
18604c54 1557
7a291083
JBT		 1558 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1559
1560 kfree(init_attr);
18604c54 1561
bea3348e 1562 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1563
7a291083
JBT		 1564 ret = 0;
1565 goto out;
1566
1567out_free:
1568 kfree(init_attr);
1569 vfree(pr->sq_skba.arr);
1570 vfree(pr->rq1_skba.arr);
1571 vfree(pr->rq2_skba.arr);
1572 vfree(pr->rq3_skba.arr);
1573 ehea_destroy_qp(pr->qp);
1574 ehea_destroy_cq(pr->send_cq);
1575 ehea_destroy_cq(pr->recv_cq);
18604c54 1576 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1577out:
1578 return ret;
1579}
1580
1581static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1582{
1583 int ret, i;
1584
357eb46d
HH		 1585 if (pr->qp)
1586 netif_napi_del(&pr->napi);
1587
7a291083
JBT		 1588 ret = ehea_destroy_qp(pr->qp);
1589
1590 if (!ret) {
1591 ehea_destroy_cq(pr->send_cq);
1592 ehea_destroy_cq(pr->recv_cq);
18604c54 1593 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1594
1595 for (i = 0; i < pr->rq1_skba.len; i++)
1596 if (pr->rq1_skba.arr[i])
1597 dev_kfree_skb(pr->rq1_skba.arr[i]);
1598
1599 for (i = 0; i < pr->rq2_skba.len; i++)
1600 if (pr->rq2_skba.arr[i])
1601 dev_kfree_skb(pr->rq2_skba.arr[i]);
1602
1603 for (i = 0; i < pr->rq3_skba.len; i++)
1604 if (pr->rq3_skba.arr[i])
1605 dev_kfree_skb(pr->rq3_skba.arr[i]);
1606
1607 for (i = 0; i < pr->sq_skba.len; i++)
1608 if (pr->sq_skba.arr[i])
1609 dev_kfree_skb(pr->sq_skba.arr[i]);
1610
1611 vfree(pr->rq1_skba.arr);
1612 vfree(pr->rq2_skba.arr);
1613 vfree(pr->rq3_skba.arr);
1614 vfree(pr->sq_skba.arr);
1615 ret = ehea_rem_smrs(pr);
1616 }
1617 return ret;
1618}
1619
13946f5e
AB		 1620static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
1621 u32 lkey)
7a291083 1622{
e743d313 1623 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1624 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1625 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
13946f5e
AB		 1626 unsigned int immediate_len = SWQE2_MAX_IMM;
1627
1628 swqe->descriptors = 0;
7a291083 1629
13946f5e
AB		 1630 if (skb_is_gso(skb)) {
1631 swqe->tx_control |= EHEA_SWQE_TSO;
1632 swqe->mss = skb_shinfo(skb)->gso_size;
1633 /*
1634 * For TSO packets we only copy the headers into the
1635 * immediate area.
1636 */
1637 immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1638 }
7a291083 1639
13946f5e
AB		 1640 if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
1641 skb_copy_from_linear_data(skb, imm_data, immediate_len);
1642 swqe->immediate_data_length = immediate_len;
7a291083 1643
13946f5e 1644 if (skb_data_size > immediate_len) {
7a291083 1645 sg1entry->l_key = lkey;
13946f5e 1646 sg1entry->len = skb_data_size - immediate_len;
44a5b3d5 1647 sg1entry->vaddr =
13946f5e 1648 ehea_map_vaddr(skb->data + immediate_len);
7a291083
JBT		 1649 swqe->descriptors++;
1650 }
1651 } else {
d626f62b 1652 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1653 swqe->immediate_data_length = skb_data_size;
1654 }
1655}
1656
1657static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1658 struct ehea_swqe *swqe, u32 lkey)
1659{
1660 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1661 skb_frag_t *frag;
1662 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1663
1664 nfrags = skb_shinfo(skb)->nr_frags;
1665 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1666 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1667 sg1entry_contains_frag_data = 0;
1668
13946f5e 1669 write_swqe2_immediate(skb, swqe, lkey);
7a291083
JBT		 1670
1671 /* write descriptors */
1672 if (nfrags > 0) {
1673 if (swqe->descriptors == 0) {
1674 /* sg1entry not yet used */
1675 frag = &skb_shinfo(skb)->frags[0];
1676
1677 /* copy sg1entry data */
1678 sg1entry->l_key = lkey;
9e903e08 1679 sg1entry->len = skb_frag_size(frag);
44a5b3d5 1680 sg1entry->vaddr =
618c4a0a 1681 ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1682 swqe->descriptors++;
1683 sg1entry_contains_frag_data = 1;
1684 }
1685
1686 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1687
1688 frag = &skb_shinfo(skb)->frags[i];
1689 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1690
1691 sgentry->l_key = lkey;
0110bba5 1692 sgentry->len = skb_frag_size(frag);
618c4a0a 1693 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1694 swqe->descriptors++;
1695 }
1696 }
1697}
1698
1699static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1700{
1701 int ret = 0;
1702 u64 hret;
1703 u8 reg_type;
1704
1705 /* De/Register untagged packets */
1706 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1707 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1708 port->logical_port_id,
1709 reg_type, port->mac_addr, 0, hcallid);
1710 if (hret != H_SUCCESS) {
8c4877a4
JP		 1711 pr_err("%sregistering bc address failed (tagged)\n",
1712 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1713 ret = -EIO;
1714 goto out_herr;
1715 }
1716
1717 /* De/Register VLAN packets */
1718 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1719 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1720 port->logical_port_id,
1721 reg_type, port->mac_addr, 0, hcallid);
1722 if (hret != H_SUCCESS) {
8c4877a4
JP		 1723 pr_err("%sregistering bc address failed (vlan)\n",
1724 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1725 ret = -EIO;
1726 }
1727out_herr:
1728 return ret;
1729}
1730
1731static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1732{
1733 struct ehea_port *port = netdev_priv(dev);
1734 struct sockaddr *mac_addr = sa;
1735 struct hcp_ehea_port_cb0 *cb0;
1736 int ret;
1737 u64 hret;
1738
1739 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1740 ret = -EADDRNOTAVAIL;
1741 goto out;
1742 }
1743
3faf2693 1744 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1745 if (!cb0) {
8c4877a4 1746 pr_err("no mem for cb0\n");
7a291083
JBT		 1747 ret = -ENOMEM;
1748 goto out;
1749 }
1750
1751 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1752
1753 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1754
1755 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1756 port->logical_port_id, H_PORT_CB0,
1757 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1758 if (hret != H_SUCCESS) {
1759 ret = -EIO;
1760 goto out_free;
1761 }
1762
1763 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1764
1765 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1766 if (port->state == EHEA_PORT_UP) {
1767 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1768 if (ret)
1769 goto out_upregs;
1770 }
7a291083
JBT		 1771
1772 port->mac_addr = cb0->port_mac_addr << 16;
1773
1774 /* Register new MAC in pHYP */
00aaea2f
JBT		 1775 if (port->state == EHEA_PORT_UP) {
1776 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1777 if (ret)
1778 goto out_upregs;
1779 }
7a291083
JBT		 1780
1781 ret = 0;
21eee2dd
TK		 1782
1783out_upregs:
1784 ehea_update_bcmc_registrations();
7a291083 1785out_free:
3faf2693 1786 free_page((unsigned long)cb0);
7a291083
JBT		 1787out:
1788 return ret;
1789}
1790
1791static void ehea_promiscuous_error(u64 hret, int enable)
1792{
7674a588 1793 if (hret == H_AUTHORITY)
8c4877a4
JP		 1794 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1795 enable == 1 ? "en" : "dis");
7674a588 1796 else
8c4877a4
JP		 1797 pr_err("failed %sabling promiscuous mode\n",
1798 enable == 1 ? "en" : "dis");
7a291083
JBT		 1799}
1800
1801static void ehea_promiscuous(struct net_device *dev, int enable)
1802{
1803 struct ehea_port *port = netdev_priv(dev);
1804 struct hcp_ehea_port_cb7 *cb7;
1805 u64 hret;
1806
aa3bc6c6 1807 if (enable == port->promisc)
7a291083
JBT		 1808 return;
1809
3faf2693 1810 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1811 if (!cb7) {
8c4877a4 1812 pr_err("no mem for cb7\n");
7a291083
JBT		 1813 goto out;
1814 }
1815
1816 /* Modify Pxs_DUCQPN in CB7 */
1817 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1818
1819 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1820 port->logical_port_id,
1821 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1822 if (hret) {
1823 ehea_promiscuous_error(hret, enable);
1824 goto out;
1825 }
1826
1827 port->promisc = enable;
1828out:
3faf2693 1829 free_page((unsigned long)cb7);
7a291083
JBT		 1830}
1831
1832static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1833 u32 hcallid)
1834{
1835 u64 hret;
1836 u8 reg_type;
1837
5d384574
TLSC		 1838 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED;
1839 if (mc_mac_addr == 0)
1840 reg_type |= EHEA_BCMC_SCOPE_ALL;
7a291083
JBT		 1841
1842 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1843 port->logical_port_id,
1844 reg_type, mc_mac_addr, 0, hcallid);
1845 if (hret)
1846 goto out;
1847
5d384574
TLSC		 1848 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL;
1849 if (mc_mac_addr == 0)
1850 reg_type |= EHEA_BCMC_SCOPE_ALL;
7a291083
JBT		 1851
1852 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1853 port->logical_port_id,
1854 reg_type, mc_mac_addr, 0, hcallid);
1855out:
1856 return hret;
1857}
1858
1859static int ehea_drop_multicast_list(struct net_device *dev)
1860{
1861 struct ehea_port *port = netdev_priv(dev);
1862 struct ehea_mc_list *mc_entry = port->mc_list;
1863 struct list_head *pos;
1864 struct list_head *temp;
1865 int ret = 0;
1866 u64 hret;
1867
1868 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1869 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1870
1871 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1872 H_DEREG_BCMC);
1873 if (hret) {
8c4877a4 1874 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 1875 ret = -EIO;
1876 }
1877
1878 list_del(pos);
1879 kfree(mc_entry);
1880 }
1881 return ret;
1882}
1883
1884static void ehea_allmulti(struct net_device *dev, int enable)
1885{
1886 struct ehea_port *port = netdev_priv(dev);
1887 u64 hret;
1888
1889 if (!port->allmulti) {
1890 if (enable) {
1891 /* Enable ALLMULTI */
1892 ehea_drop_multicast_list(dev);
1893 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1894 if (!hret)
1895 port->allmulti = 1;
1896 else
8c4877a4
JP		 1897 netdev_err(dev,
1898 "failed enabling IFF_ALLMULTI\n");
7a291083 1899 }
5d384574 1900 } else {
7a291083
JBT		 1901 if (!enable) {
1902 /* Disable ALLMULTI */
1903 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1904 if (!hret)
1905 port->allmulti = 0;
1906 else
8c4877a4
JP		 1907 netdev_err(dev,
1908 "failed disabling IFF_ALLMULTI\n");
7a291083 1909 }
5d384574 1910 }
7a291083
JBT		 1911}
1912
508d2b5d 1913static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1914{
1915 struct ehea_mc_list *ehea_mcl_entry;
1916 u64 hret;
1917
1e1675cc 1918 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
b2adaca9 1919 if (!ehea_mcl_entry)
7a291083 1920 return;
7a291083
JBT		 1921
1922 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1923
1924 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1925
1926 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1927 H_REG_BCMC);
1928 if (!hret)
1929 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1930 else {
8c4877a4 1931 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 1932 kfree(ehea_mcl_entry);
1933 }
1934}
1935
1936static void ehea_set_multicast_list(struct net_device *dev)
1937{
1938 struct ehea_port *port = netdev_priv(dev);
22bedad3 1939 struct netdev_hw_addr *ha;
48e2f183 1940 int ret;
7a291083 1941
47d59d01 1942 ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC));
7a291083
JBT		 1943
1944 if (dev->flags & IFF_ALLMULTI) {
1945 ehea_allmulti(dev, 1);
21eee2dd 1946 goto out;
7a291083
JBT		 1947 }
1948 ehea_allmulti(dev, 0);
1949
4cd24eaf 1950 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 1951 ret = ehea_drop_multicast_list(dev);
1952 if (ret) {
1953 /* Dropping the current multicast list failed.
1954 * Enabling ALL_MULTI is the best we can do.
1955 */
1956 ehea_allmulti(dev, 1);
1957 }
1958
4cd24eaf 1959 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 1960 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1961 port->adapter->max_mc_mac);
7a291083
JBT		 1962 goto out;
1963 }
1964
22bedad3
JP		 1965 netdev_for_each_mc_addr(ha, dev)
1966 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 1967
7a291083
JBT		 1968 }
1969out:
21eee2dd 1970 ehea_update_bcmc_registrations();
7a291083
JBT		 1971}
1972
1973static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1974{
1975 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1976 return -EINVAL;
1977 dev->mtu = new_mtu;
1978 return 0;
1979}
1980
d695c335 1981static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
7a291083 1982{
d695c335 1983 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
d1d25aab 1984
d695c335
AB		 1985 if (skb->protocol != htons(ETH_P_IP))
1986 return;
7a291083 1987
d695c335
AB		 1988 if (skb->ip_summed == CHECKSUM_PARTIAL)
1989 swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
7a291083 1990
d695c335
AB		 1991 swqe->ip_start = skb_network_offset(skb);
1992 swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
7a291083 1993
d695c335
AB		 1994 switch (ip_hdr(skb)->protocol) {
1995 case IPPROTO_UDP:
1996 if (skb->ip_summed == CHECKSUM_PARTIAL)
1997 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
7a291083 1998
d695c335
AB		 1999 swqe->tcp_offset = swqe->ip_end + 1 +
2000 offsetof(struct udphdr, check);
d695c335
AB		 2001 break;
2002
2003 case IPPROTO_TCP:
2004 if (skb->ip_summed == CHECKSUM_PARTIAL)
2005 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2006
2007 swqe->tcp_offset = swqe->ip_end + 1 +
2008 offsetof(struct tcphdr, check);
d695c335 2009 break;
7a291083 2010 }
d695c335
AB		 2011}
2012
2013static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2014 struct ehea_swqe *swqe, u32 lkey)
2015{
2016 swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
2017
2018 xmit_common(skb, swqe);
7a291083
JBT		 2019
2020 write_swqe2_data(skb, dev, swqe, lkey);
2021}
2022
2023static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2024 struct ehea_swqe *swqe)
2025{
7a291083 2026 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
7a291083 2027
d695c335 2028 xmit_common(skb, swqe);
d1d25aab 2029
30e2e90b 2030 if (!skb->data_len)
d626f62b 2031 skb_copy_from_linear_data(skb, imm_data, skb->len);
30e2e90b
AB		 2032 else
2033 skb_copy_bits(skb, 0, imm_data, skb->len);
d695c335 2034
7a291083
JBT		 2035 swqe->immediate_data_length = skb->len;
2036 dev_kfree_skb(skb);
2037}
2038
2039static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2040{
2041 struct ehea_port *port = netdev_priv(dev);
2042 struct ehea_swqe *swqe;
7a291083
JBT		 2043 u32 lkey;
2044 int swqe_index;
18604c54 2045 struct ehea_port_res *pr;
b9564468 2046 struct netdev_queue *txq;
18604c54 2047
b9564468
AB		 2048 pr = &port->port_res[skb_get_queue_mapping(skb)];
2049 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
18604c54 2050
7a291083
JBT		 2051 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2052 memset(swqe, 0, SWQE_HEADER_SIZE);
2053 atomic_dec(&pr->swqe_avail);
2054
e5ccd961
ED		 2055 if (vlan_tx_tag_present(skb)) {
2056 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2057 swqe->vlan_tag = vlan_tx_tag_get(skb);
2058 }
2059
ce45b873
BL		 2060 pr->tx_packets++;
2061 pr->tx_bytes += skb->len;
2062
7a291083
JBT		 2063 if (skb->len <= SWQE3_MAX_IMM) {
2064 u32 sig_iv = port->sig_comp_iv;
2065 u32 swqe_num = pr->swqe_id_counter;
2066 ehea_xmit3(skb, dev, swqe);
2067 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2068 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2069 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2070 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2071 sig_iv);
2072 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2073 pr->swqe_ll_count = 0;
2074 } else
2075 pr->swqe_ll_count += 1;
2076 } else {
2077 swqe->wr_id =
2078 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2079 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2080 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2081 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2082 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2083
2084 pr->sq_skba.index++;
2085 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2086
2087 lkey = pr->send_mr.lkey;
2088 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2089 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2090 }
2091 pr->swqe_id_counter += 1;
2092
8c4877a4
JP		 2093 netif_info(port, tx_queued, dev,
2094 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2095 if (netif_msg_tx_queued(port))
bff0a55f 2096 ehea_dump(swqe, 512, "swqe");
7a291083 2097
2c69448b 2098 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
b9564468 2099 netif_tx_stop_queue(txq);
2c69448b
JBT		 2100 swqe->tx_control |= EHEA_SWQE_PURGE;
2101 }
44c82152 2102
7a291083 2103 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2104
2105 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
b9564468
AB		 2106 pr->p_stats.queue_stopped++;
2107 netif_tx_stop_queue(txq);
7a291083 2108 }
2c69448b 2109
7a291083
JBT		 2110 return NETDEV_TX_OK;
2111}
2112
80d5c368 2113static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
7a291083
JBT		 2114{
2115 struct ehea_port *port = netdev_priv(dev);
2116 struct ehea_adapter *adapter = port->adapter;
2117 struct hcp_ehea_port_cb1 *cb1;
2118 int index;
2119 u64 hret;
8e586137 2120 int err = 0;
7a291083 2121
3faf2693 2122 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2123 if (!cb1) {
8c4877a4 2124 pr_err("no mem for cb1\n");
8e586137 2125 err = -ENOMEM;
7a291083
JBT		 2126 goto out;
2127 }
2128
2129 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2130 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2131 if (hret != H_SUCCESS) {
8c4877a4 2132 pr_err("query_ehea_port failed\n");
8e586137 2133 err = -EINVAL;
7a291083
JBT		 2134 goto out;
2135 }
2136
2137 index = (vid / 64);
dec590c1 2138 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2139
2140 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2141 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2142 if (hret != H_SUCCESS) {
8c4877a4 2143 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2144 err = -EINVAL;
2145 }
7a291083 2146out:
3faf2693 2147 free_page((unsigned long)cb1);
8e586137 2148 return err;
7a291083
JBT		 2149}
2150
80d5c368 2151static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
7a291083
JBT		 2152{
2153 struct ehea_port *port = netdev_priv(dev);
2154 struct ehea_adapter *adapter = port->adapter;
2155 struct hcp_ehea_port_cb1 *cb1;
2156 int index;
2157 u64 hret;
8e586137 2158 int err = 0;
7a291083 2159
3faf2693 2160 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2161 if (!cb1) {
8c4877a4 2162 pr_err("no mem for cb1\n");
8e586137 2163 err = -ENOMEM;
7a291083
JBT		 2164 goto out;
2165 }
2166
2167 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2168 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2169 if (hret != H_SUCCESS) {
8c4877a4 2170 pr_err("query_ehea_port failed\n");
8e586137 2171 err = -EINVAL;
7a291083
JBT		 2172 goto out;
2173 }
2174
2175 index = (vid / 64);
dec590c1 2176 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2177
2178 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2179 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2180 if (hret != H_SUCCESS) {
8c4877a4 2181 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2182 err = -EINVAL;
2183 }
7a291083 2184out:
3faf2693 2185 free_page((unsigned long)cb1);
8e586137 2186 return err;
7a291083
JBT		 2187}
2188
1886e5d2 2189static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
7a291083
JBT		 2190{
2191 int ret = -EIO;
2192 u64 hret;
2193 u16 dummy16 = 0;
2194 u64 dummy64 = 0;
508d2b5d 2195 struct hcp_modify_qp_cb0 *cb0;
7a291083 2196
3faf2693 2197 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2198 if (!cb0) {
2199 ret = -ENOMEM;
2200 goto out;
2201 }
2202
2203 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2204 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2205 if (hret != H_SUCCESS) {
8c4877a4 2206 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2207 goto out;
2208 }
2209
2210 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2211 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2212 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2213 &dummy64, &dummy64, &dummy16, &dummy16);
2214 if (hret != H_SUCCESS) {
8c4877a4 2215 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2216 goto out;
2217 }
2218
2219 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2220 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2221 if (hret != H_SUCCESS) {
8c4877a4 2222 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2223 goto out;
2224 }
2225
2226 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2227 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2228 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2229 &dummy64, &dummy64, &dummy16, &dummy16);
2230 if (hret != H_SUCCESS) {
8c4877a4 2231 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2232 goto out;
2233 }
2234
2235 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2236 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2237 if (hret != H_SUCCESS) {
8c4877a4 2238 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2239 goto out;
2240 }
2241
2242 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2243 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2244 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2245 &dummy64, &dummy64, &dummy16, &dummy16);
2246 if (hret != H_SUCCESS) {
8c4877a4 2247 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2248 goto out;
2249 }
2250
2251 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2252 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2253 if (hret != H_SUCCESS) {
8c4877a4 2254 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2255 goto out;
2256 }
2257
2258 ret = 0;
2259out:
3faf2693 2260 free_page((unsigned long)cb0);
7a291083
JBT		 2261 return ret;
2262}
2263
723f28e4 2264static int ehea_port_res_setup(struct ehea_port *port, int def_qps)
7a291083
JBT		 2265{
2266 int ret, i;
2267 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2268 enum ehea_eq_type eq_type = EHEA_EQ;
2269
2270 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2271 EHEA_MAX_ENTRIES_EQ, 1);
2272 if (!port->qp_eq) {
2273 ret = -EINVAL;
8c4877a4 2274 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2275 goto out_kill_eq;
2276 }
2277
2278 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2279 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2280 pr_cfg.max_entries_sq = sq_entries;
2281 pr_cfg.max_entries_rq1 = rq1_entries;
2282 pr_cfg.max_entries_rq2 = rq2_entries;
2283 pr_cfg.max_entries_rq3 = rq3_entries;
2284
2285 pr_cfg_small_rx.max_entries_rcq = 1;
2286 pr_cfg_small_rx.max_entries_scq = sq_entries;
2287 pr_cfg_small_rx.max_entries_sq = sq_entries;
2288 pr_cfg_small_rx.max_entries_rq1 = 1;
2289 pr_cfg_small_rx.max_entries_rq2 = 1;
2290 pr_cfg_small_rx.max_entries_rq3 = 1;
2291
2292 for (i = 0; i < def_qps; i++) {
2293 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2294 if (ret)
2295 goto out_clean_pr;
2296 }
723f28e4 2297 for (i = def_qps; i < def_qps; i++) {
7a291083
JBT		 2298 ret = ehea_init_port_res(port, &port->port_res[i],
2299 &pr_cfg_small_rx, i);
2300 if (ret)
2301 goto out_clean_pr;
2302 }
2303
2304 return 0;
2305
2306out_clean_pr:
2307 while (--i >= 0)
2308 ehea_clean_portres(port, &port->port_res[i]);
2309
2310out_kill_eq:
2311 ehea_destroy_eq(port->qp_eq);
2312 return ret;
2313}
2314
2315static int ehea_clean_all_portres(struct ehea_port *port)
2316{
2317 int ret = 0;
2318 int i;
2319
723f28e4 2320 for (i = 0; i < port->num_def_qps; i++)
7a291083
JBT		 2321 ret |= ehea_clean_portres(port, &port->port_res[i]);
2322
2323 ret |= ehea_destroy_eq(port->qp_eq);
2324
2325 return ret;
2326}
2327
35cf2e2e 2328static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2329{
35cf2e2e
TK		 2330 if (adapter->active_ports)
2331 return;
1211bb6d
TK		 2332
2333 ehea_rem_mr(&adapter->mr);
2334}
2335
35cf2e2e 2336static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2337{
35cf2e2e
TK		 2338 if (adapter->active_ports)
2339 return 0;
1211bb6d
TK		 2340
2341 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2342}
2343
7a291083
JBT		 2344static int ehea_up(struct net_device *dev)
2345{
2346 int ret, i;
2347 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2348
2349 if (port->state == EHEA_PORT_UP)
2350 return 0;
2351
723f28e4 2352 ret = ehea_port_res_setup(port, port->num_def_qps);
7a291083 2353 if (ret) {
8c4877a4 2354 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2355 goto out;
2356 }
2357
2358 /* Set default QP for this port */
2359 ret = ehea_configure_port(port);
2360 if (ret) {
8c4877a4 2361 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2362 goto out_clean_pr;
2363 }
2364
7a291083
JBT		 2365 ret = ehea_reg_interrupts(dev);
2366 if (ret) {
8c4877a4 2367 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2368 goto out_clean_pr;
7a291083
JBT		 2369 }
2370
723f28e4 2371 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2372 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2373 if (ret) {
8c4877a4 2374 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2375 goto out_free_irqs;
2376 }
2377 }
2378
508d2b5d 2379 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2380 ret = ehea_fill_port_res(&port->port_res[i]);
2381 if (ret) {
8c4877a4 2382 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2383 goto out_free_irqs;
2384 }
2385 }
2386
21eee2dd
TK		 2387 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2388 if (ret) {
2389 ret = -EIO;
2390 goto out_free_irqs;
2391 }
2392
7a291083 2393 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2394
2395 ret = 0;
7a291083
JBT		 2396 goto out;
2397
2398out_free_irqs:
2399 ehea_free_interrupts(dev);
2400
7a291083
JBT		 2401out_clean_pr:
2402 ehea_clean_all_portres(port);
2403out:
44c82152 2404 if (ret)
8c4877a4 2405 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2406
21eee2dd 2407 ehea_update_bcmc_registrations();
21eee2dd 2408 ehea_update_firmware_handles();
21eee2dd 2409
7a291083
JBT		 2410 return ret;
2411}
2412
bea3348e
SH		 2413static void port_napi_disable(struct ehea_port *port)
2414{
2415 int i;
2416
723f28e4 2417 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2418 napi_disable(&port->port_res[i].napi);
2419}
2420
2421static void port_napi_enable(struct ehea_port *port)
2422{
2423 int i;
2424
723f28e4 2425 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2426 napi_enable(&port->port_res[i].napi);
2427}
2428
7a291083
JBT		 2429static int ehea_open(struct net_device *dev)
2430{
2431 int ret;
2432 struct ehea_port *port = netdev_priv(dev);
2433
a5af6ad3 2434 mutex_lock(&port->port_lock);
7a291083 2435
8c4877a4 2436 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2437
2438 ret = ehea_up(dev);
bea3348e
SH		 2439 if (!ret) {
2440 port_napi_enable(port);
b9564468 2441 netif_tx_start_all_queues(dev);
bea3348e 2442 }
7a291083 2443
a5af6ad3 2444 mutex_unlock(&port->port_lock);
67c170a2
AB		 2445 schedule_delayed_work(&port->stats_work,
2446 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 2447
2448 return ret;
2449}
2450
2451static int ehea_down(struct net_device *dev)
2452{
bea3348e 2453 int ret;
7a291083
JBT		 2454 struct ehea_port *port = netdev_priv(dev);
2455
2456 if (port->state == EHEA_PORT_DOWN)
2457 return 0;
2458
2459 ehea_drop_multicast_list(dev);
5d384574 2460 ehea_allmulti(dev, 0);
21eee2dd
TK		 2461 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2462
7a291083
JBT		 2463 ehea_free_interrupts(dev);
2464
7a291083 2465 port->state = EHEA_PORT_DOWN;
44c82152 2466
21eee2dd 2467 ehea_update_bcmc_registrations();
21eee2dd 2468
44c82152
TK		 2469 ret = ehea_clean_all_portres(port);
2470 if (ret)
8c4877a4 2471 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2472
21eee2dd 2473 ehea_update_firmware_handles();
21eee2dd 2474
7a291083
JBT		 2475 return ret;
2476}
2477
2478static int ehea_stop(struct net_device *dev)
2479{
2480 int ret;
2481 struct ehea_port *port = netdev_priv(dev);
2482
8c4877a4 2483 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2484
2f69ae01 2485 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2486 cancel_work_sync(&port->reset_task);
2aefcad8 2487 cancel_delayed_work_sync(&port->stats_work);
a5af6ad3 2488 mutex_lock(&port->port_lock);
b9564468 2489 netif_tx_stop_all_queues(dev);
0173b793 2490 port_napi_disable(port);
7a291083 2491 ret = ehea_down(dev);
a5af6ad3 2492 mutex_unlock(&port->port_lock);
2f69ae01 2493 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2494 return ret;
2495}
2496
22559c5d 2497static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2498{
2499 struct ehea_qp qp = *orig_qp;
2500 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2501 struct ehea_swqe *swqe;
2502 int wqe_index;
2503 int i;
2504
2505 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2506 swqe = ehea_get_swqe(&qp, &wqe_index);
2507 swqe->tx_control |= EHEA_SWQE_PURGE;
2508 }
2509}
2510
22559c5d 2511static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2512{
2513 int i;
2514
723f28e4 2515 for (i = 0; i < port->num_def_qps; i++) {
44fb3126
TK		 2516 struct ehea_port_res *pr = &port->port_res[i];
2517 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2518 int ret;
2519
2520 ret = wait_event_timeout(port->swqe_avail_wq,
2521 atomic_read(&pr->swqe_avail) >= swqe_max,
2522 msecs_to_jiffies(100));
2523
2524 if (!ret) {
8c4877a4 2525 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2526 break;
44fb3126
TK		 2527 }
2528 }
2529}
2530
1886e5d2 2531static int ehea_stop_qps(struct net_device *dev)
2c69448b
JBT		 2532{
2533 struct ehea_port *port = netdev_priv(dev);
2534 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2535 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2536 int ret = -EIO;
2537 int dret;
2538 int i;
2539 u64 hret;
2540 u64 dummy64 = 0;
2541 u16 dummy16 = 0;
2542
3faf2693 2543 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2544 if (!cb0) {
2545 ret = -ENOMEM;
2546 goto out;
2547 }
2548
723f28e4 2549 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2550 struct ehea_port_res *pr = &port->port_res[i];
2551 struct ehea_qp *qp = pr->qp;
2552
2553 /* Purge send queue */
2554 ehea_purge_sq(qp);
2555
2556 /* Disable queue pair */
2557 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2558 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2559 cb0);
2560 if (hret != H_SUCCESS) {
8c4877a4 2561 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2562 goto out;
2563 }
2564
2565 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2566 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2567
2568 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2569 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2570 1), cb0, &dummy64,
2571 &dummy64, &dummy16, &dummy16);
2572 if (hret != H_SUCCESS) {
8c4877a4 2573 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2574 goto out;
2575 }
2576
2577 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2578 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2579 cb0);
2580 if (hret != H_SUCCESS) {
8c4877a4 2581 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2582 goto out;
2583 }
2584
2585 /* deregister shared memory regions */
2586 dret = ehea_rem_smrs(pr);
2587 if (dret) {
8c4877a4 2588 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2589 goto out;
2590 }
2591 }
2592
2593 ret = 0;
2594out:
3faf2693 2595 free_page((unsigned long)cb0);
2c69448b
JBT		 2596
2597 return ret;
2598}
2599
1886e5d2 2600static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2601{
2602 struct ehea_qp qp = *orig_qp;
2603 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2604 struct ehea_rwqe *rwqe;
2605 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2606 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2607 struct sk_buff *skb;
2608 u32 lkey = pr->recv_mr.lkey;
2609
2610
2611 int i;
2612 int index;
2613
2614 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2615 rwqe = ehea_get_next_rwqe(&qp, 2);
2616 rwqe->sg_list[0].l_key = lkey;
2617 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2618 skb = skba_rq2[index];
2619 if (skb)
2620 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2621 }
2622
2623 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2624 rwqe = ehea_get_next_rwqe(&qp, 3);
2625 rwqe->sg_list[0].l_key = lkey;
2626 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2627 skb = skba_rq3[index];
2628 if (skb)
2629 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2630 }
2631}
2632
1886e5d2 2633static int ehea_restart_qps(struct net_device *dev)
2c69448b
JBT		 2634{
2635 struct ehea_port *port = netdev_priv(dev);
2636 struct ehea_adapter *adapter = port->adapter;
2637 int ret = 0;
2638 int i;
2639
508d2b5d 2640 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2641 u64 hret;
2642 u64 dummy64 = 0;
2643 u16 dummy16 = 0;
2644
3faf2693 2645 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2646 if (!cb0) {
2647 ret = -ENOMEM;
2648 goto out;
2649 }
2650
723f28e4 2651 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2652 struct ehea_port_res *pr = &port->port_res[i];
2653 struct ehea_qp *qp = pr->qp;
2654
2655 ret = ehea_gen_smrs(pr);
2656 if (ret) {
8c4877a4 2657 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2658 goto out;
2659 }
2660
2661 ehea_update_rqs(qp, pr);
2662
2663 /* Enable queue pair */
2664 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2665 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2666 cb0);
2667 if (hret != H_SUCCESS) {
8c4877a4 2668 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2669 goto out;
2670 }
2671
2672 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2673 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2674
2675 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2676 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2677 1), cb0, &dummy64,
2678 &dummy64, &dummy16, &dummy16);
2679 if (hret != H_SUCCESS) {
8c4877a4 2680 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2681 goto out;
2682 }
2683
2684 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2685 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2686 cb0);
2687 if (hret != H_SUCCESS) {
8c4877a4 2688 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2689 goto out;
2690 }
2691
2692 /* refill entire queue */
2693 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2694 ehea_refill_rq2(pr, 0);
2695 ehea_refill_rq3(pr, 0);
2696 }
2697out:
3faf2693 2698 free_page((unsigned long)cb0);
2c69448b
JBT		 2699
2700 return ret;
2701}
2702
c4028958 2703static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2704{
2705 int ret;
c4028958
DH		 2706 struct ehea_port *port =
2707 container_of(work, struct ehea_port, reset_task);
2708 struct net_device *dev = port->netdev;
7a291083 2709
099473c1 2710 mutex_lock(&dlpar_mem_lock);
7a291083 2711 port->resets++;
a5af6ad3 2712 mutex_lock(&port->port_lock);
b9564468 2713 netif_tx_disable(dev);
bea3348e
SH		 2714
2715 port_napi_disable(port);
7a291083 2716
44c82152 2717 ehea_down(dev);
7a291083
JBT		 2718
2719 ret = ehea_up(dev);
44c82152 2720 if (ret)
7a291083 2721 goto out;
7a291083 2722
2c69448b
JBT		 2723 ehea_set_multicast_list(dev);
2724
8c4877a4 2725 netif_info(port, timer, dev, "reset successful\n");
7a291083 2726
bea3348e
SH		 2727 port_napi_enable(port);
2728
b9564468 2729 netif_tx_wake_all_queues(dev);
7a291083 2730out:
a5af6ad3 2731 mutex_unlock(&port->port_lock);
099473c1 2732 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2733}
2734
3d6b892b 2735static void ehea_rereg_mrs(void)
44c82152
TK		 2736{
2737 int ret, i;
2738 struct ehea_adapter *adapter;
2739
8c4877a4 2740 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2741
2742 list_for_each_entry(adapter, &adapter_list, list)
2743 if (adapter->active_ports) {
2744 /* Shutdown all ports */
2745 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2746 struct ehea_port *port = adapter->port[i];
a5af6ad3 2747 struct net_device *dev;
44c82152 2748
a5af6ad3
DW		 2749 if (!port)
2750 continue;
44c82152 2751
a5af6ad3
DW		 2752 dev = port->netdev;
2753
2754 if (dev->flags & IFF_UP) {
2755 mutex_lock(&port->port_lock);
b9564468 2756 netif_tx_disable(dev);
df39e8ba 2757 ehea_flush_sq(port);
a5af6ad3
DW		 2758 ret = ehea_stop_qps(dev);
2759 if (ret) {
2760 mutex_unlock(&port->port_lock);
2761 goto out;
44c82152 2762 }
a5af6ad3
DW		 2763 port_napi_disable(port);
2764 mutex_unlock(&port->port_lock);
44c82152 2765 }
2928db4c 2766 reset_sq_restart_flag(port);
44c82152
TK		 2767 }
2768
2769 /* Unregister old memory region */
2770 ret = ehea_rem_mr(&adapter->mr);
2771 if (ret) {
8c4877a4 2772 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 2773 goto out;
2774 }
2775 }
2776
44c82152
TK		 2777 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2778
2779 list_for_each_entry(adapter, &adapter_list, list)
2780 if (adapter->active_ports) {
2781 /* Register new memory region */
2782 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2783 if (ret) {
8c4877a4 2784 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 2785 goto out;
2786 }
2787
2788 /* Restart all ports */
2789 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2790 struct ehea_port *port = adapter->port[i];
2791
2792 if (port) {
2793 struct net_device *dev = port->netdev;
2794
2795 if (dev->flags & IFF_UP) {
a5af6ad3 2796 mutex_lock(&port->port_lock);
2c69448b 2797 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 2798 if (!ret) {
2799 check_sqs(port);
2800 port_napi_enable(port);
b9564468 2801 netif_tx_wake_all_queues(dev);
6f4d6dc1
BL		 2802 } else {
2803 netdev_err(dev, "Unable to restart QPS\n");
2804 }
a5af6ad3 2805 mutex_unlock(&port->port_lock);
44c82152
TK		 2806 }
2807 }
2808 }
2809 }
8c4877a4 2810 pr_info("re-initializing driver complete\n");
44c82152
TK		 2811out:
2812 return;
2813}
2814
7a291083
JBT		 2815static void ehea_tx_watchdog(struct net_device *dev)
2816{
2817 struct ehea_port *port = netdev_priv(dev);
2818
2c69448b
JBT		 2819 if (netif_carrier_ok(dev) &&
2820 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2821 ehea_schedule_port_reset(port);
7a291083
JBT		 2822}
2823
1886e5d2 2824static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
7a291083
JBT		 2825{
2826 struct hcp_query_ehea *cb;
2827 u64 hret;
2828 int ret;
2829
3faf2693 2830 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2831 if (!cb) {
2832 ret = -ENOMEM;
2833 goto out;
2834 }
2835
2836 hret = ehea_h_query_ehea(adapter->handle, cb);
2837
2838 if (hret != H_SUCCESS) {
2839 ret = -EIO;
2840 goto out_herr;
2841 }
2842
7a291083
JBT		 2843 adapter->max_mc_mac = cb->max_mc_mac - 1;
2844 ret = 0;
2845
2846out_herr:
3faf2693 2847 free_page((unsigned long)cb);
7a291083
JBT		 2848out:
2849 return ret;
2850}
2851
1886e5d2 2852static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2853{
7a291083 2854 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2855 u64 hret;
2856 int ret = 0;
7a291083 2857
1acf2318 2858 *jumbo = 0;
7a291083 2859
1acf2318 2860 /* (Try to) enable *jumbo frames */
3faf2693 2861 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2862 if (!cb4) {
8c4877a4 2863 pr_err("no mem for cb4\n");
1acf2318
JBT		 2864 ret = -ENOMEM;
2865 goto out;
7a291083 2866 } else {
1acf2318 2867 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2868 port->logical_port_id,
2869 H_PORT_CB4,
2870 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2871 if (hret == H_SUCCESS) {
2872 if (cb4->jumbo_frame)
1acf2318 2873 *jumbo = 1;
9c750b7d
TK		 2874 else {
2875 cb4->jumbo_frame = 1;
1acf2318
JBT		 2876 hret = ehea_h_modify_ehea_port(port->adapter->
2877 handle,
9c750b7d 2878 port->
1acf2318 2879 logical_port_id,
9c750b7d
TK		 2880 H_PORT_CB4,
2881 H_PORT_CB4_JUMBO,
2882 cb4);
2883 if (hret == H_SUCCESS)
1acf2318 2884 *jumbo = 1;
9c750b7d 2885 }
1acf2318
JBT		 2886 } else
2887 ret = -EINVAL;
2888
3faf2693 2889 free_page((unsigned long)cb4);
7a291083 2890 }
1acf2318
JBT		 2891out:
2892 return ret;
2893}
2894
2895static ssize_t ehea_show_port_id(struct device *dev,
2896 struct device_attribute *attr, char *buf)
2897{
2898 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2899 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2900}
2901
2902static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2903 NULL);
2904
0297be07 2905static void logical_port_release(struct device *dev)
1acf2318
JBT		 2906{
2907 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 2908 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 2909}
2910
2911static struct device *ehea_register_port(struct ehea_port *port,
2912 struct device_node *dn)
2913{
2914 int ret;
2915
61c7a080 2916 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 2917 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 2918 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2919
db1d7bf7 2920 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 2921 port->ofdev.dev.release = logical_port_release;
2922
2923 ret = of_device_register(&port->ofdev);
2924 if (ret) {
8c4877a4 2925 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 2926 goto out;
2927 }
2928
2929 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2930 if (ret) {
8c4877a4 2931 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 2932 goto out_unreg_of_dev;
2933 }
e542aa6b 2934
1acf2318
JBT		 2935 return &port->ofdev.dev;
2936
2937out_unreg_of_dev:
2938 of_device_unregister(&port->ofdev);
2939out:
2940 return NULL;
2941}
2942
2943static void ehea_unregister_port(struct ehea_port *port)
2944{
2945 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2946 of_device_unregister(&port->ofdev);
2947}
2948
086c1b2c
TK		 2949static const struct net_device_ops ehea_netdev_ops = {
2950 .ndo_open = ehea_open,
2951 .ndo_stop = ehea_stop,
2952 .ndo_start_xmit = ehea_start_xmit,
2953#ifdef CONFIG_NET_POLL_CONTROLLER
2954 .ndo_poll_controller = ehea_netpoll,
2955#endif
239c562c 2956 .ndo_get_stats64 = ehea_get_stats64,
086c1b2c 2957 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 2958 .ndo_validate_addr = eth_validate_addr,
afc4b13d 2959 .ndo_set_rx_mode = ehea_set_multicast_list,
086c1b2c 2960 .ndo_change_mtu = ehea_change_mtu,
086c1b2c 2961 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 2962 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
2963 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 2964};
2965
1886e5d2 2966static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
1acf2318
JBT		 2967 u32 logical_port_id,
2968 struct device_node *dn)
2969{
2970 int ret;
2971 struct net_device *dev;
2972 struct ehea_port *port;
2973 struct device *port_dev;
2974 int jumbo;
2975
2976 /* allocate memory for the port structures */
b9564468 2977 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
1acf2318
JBT		 2978
2979 if (!dev) {
1acf2318
JBT		 2980 ret = -ENOMEM;
2981 goto out_err;
2982 }
2983
2984 port = netdev_priv(dev);
2985
a5af6ad3 2986 mutex_init(&port->port_lock);
1acf2318
JBT		 2987 port->state = EHEA_PORT_DOWN;
2988 port->sig_comp_iv = sq_entries / 10;
2989
2990 port->adapter = adapter;
2991 port->netdev = dev;
2992 port->logical_port_id = logical_port_id;
2993
2994 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2995
2996 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2997 if (!port->mc_list) {
2998 ret = -ENOMEM;
2999 goto out_free_ethdev;
3000 }
3001
3002 INIT_LIST_HEAD(&port->mc_list->list);
3003
3004 ret = ehea_sense_port_attr(port);
3005 if (ret)
3006 goto out_free_mc_list;
3007
b9564468 3008 netif_set_real_num_rx_queues(dev, port->num_def_qps);
723f28e4 3009 netif_set_real_num_tx_queues(dev, port->num_def_qps);
b9564468 3010
1acf2318
JBT		 3011 port_dev = ehea_register_port(port, dn);
3012 if (!port_dev)
3013 goto out_free_mc_list;
3014
3015 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3016
3017 /* initialize net_device structure */
7a291083
JBT		 3018 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3019
086c1b2c
TK		 3020 dev->netdev_ops = &ehea_netdev_ops;
3021 ehea_set_ethtool_ops(dev);
3022
d695c335 3023 dev->hw_features = NETIF_F_SG | NETIF_F_TSO
f646968f 3024 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX;
7a291083 3025 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
f646968f
PM		 3026 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
3027 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3028 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM;
076f2032
AB		 3029 dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
3030 NETIF_F_IP_CSUM;
7a291083
JBT		 3031 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3032
c4028958 3033 INIT_WORK(&port->reset_task, ehea_reset_port);
2aefcad8 3034 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
7a291083 3035
21ccc793
AB		 3036 init_waitqueue_head(&port->swqe_avail_wq);
3037 init_waitqueue_head(&port->restart_wq);
3038
2aefcad8 3039 memset(&port->stats, 0, sizeof(struct net_device_stats));
7a291083
JBT		 3040 ret = register_netdev(dev);
3041 if (ret) {
8c4877a4 3042 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3043 goto out_unreg_port;
7a291083
JBT		 3044 }
3045
1acf2318 3046 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3047 if (ret)
8c4877a4 3048 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3049
8c4877a4
JP		 3050 netdev_info(dev, "Jumbo frames are %sabled\n",
3051 jumbo == 1 ? "en" : "dis");
9c750b7d 3052
44c82152
TK		 3053 adapter->active_ports++;
3054
1acf2318 3055 return port;
7a291083 3056
1acf2318
JBT		 3057out_unreg_port:
3058 ehea_unregister_port(port);
3059
3060out_free_mc_list:
7a291083 3061 kfree(port->mc_list);
1acf2318
JBT		 3062
3063out_free_ethdev:
3064 free_netdev(dev);
3065
3066out_err:
8c4877a4
JP		 3067 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3068 logical_port_id, ret);
1acf2318
JBT		 3069 return NULL;
3070}
3071
3072static void ehea_shutdown_single_port(struct ehea_port *port)
3073{
7fb1c2ac 3074 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3075
3076 cancel_work_sync(&port->reset_task);
2aefcad8 3077 cancel_delayed_work_sync(&port->stats_work);
1acf2318
JBT		 3078 unregister_netdev(port->netdev);
3079 ehea_unregister_port(port);
3080 kfree(port->mc_list);
3081 free_netdev(port->netdev);
7fb1c2ac 3082 adapter->active_ports--;
7a291083
JBT		 3083}
3084
3085static int ehea_setup_ports(struct ehea_adapter *adapter)
3086{
1acf2318
JBT		 3087 struct device_node *lhea_dn;
3088 struct device_node *eth_dn = NULL;
d1d25aab 3089
9f9a3b8a 3090 const u32 *dn_log_port_id;
1acf2318
JBT		 3091 int i = 0;
3092
61c7a080 3093 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3094 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3095
40cd3a45 3096 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3097 NULL);
1acf2318 3098 if (!dn_log_port_id) {
8c4877a4
JP		 3099 pr_err("bad device node: eth_dn name=%s\n",
3100 eth_dn->full_name);
1acf2318
JBT		 3101 continue;
3102 }
7a291083 3103
1211bb6d 3104 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3105 pr_err("creating MR failed\n");
1211bb6d
TK		 3106 of_node_put(eth_dn);
3107 return -EIO;
3108 }
3109
1acf2318
JBT		 3110 adapter->port[i] = ehea_setup_single_port(adapter,
3111 *dn_log_port_id,
3112 eth_dn);
7a291083 3113 if (adapter->port[i])
8c4877a4
JP		 3114 netdev_info(adapter->port[i]->netdev,
3115 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3116 else
3117 ehea_remove_adapter_mr(adapter);
3118
1acf2318 3119 i++;
ee289b64 3120 }
1211bb6d 3121 return 0;
1acf2318
JBT		 3122}
3123
e542aa6b
JBT		 3124static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3125 u32 logical_port_id)
1acf2318
JBT		 3126{
3127 struct device_node *lhea_dn;
3128 struct device_node *eth_dn = NULL;
9f9a3b8a 3129 const u32 *dn_log_port_id;
1acf2318 3130
61c7a080 3131 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3132 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3133
40cd3a45 3134 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3135 NULL);
1acf2318
JBT		 3136 if (dn_log_port_id)
3137 if (*dn_log_port_id == logical_port_id)
3138 return eth_dn;
ee289b64 3139 }
1acf2318
JBT		 3140
3141 return NULL;
3142}
3143
3144static ssize_t ehea_probe_port(struct device *dev,
3145 struct device_attribute *attr,
3146 const char *buf, size_t count)
3147{
c7ae011d 3148 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3149 struct ehea_port *port;
3150 struct device_node *eth_dn = NULL;
3151 int i;
3152
3153 u32 logical_port_id;
3154
a8e34fda 3155 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3156
3157 port = ehea_get_port(adapter, logical_port_id);
3158
3159 if (port) {
8c4877a4
JP		 3160 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3161 logical_port_id);
1acf2318 3162 return -EINVAL;
7a291083 3163 }
e542aa6b 3164
1acf2318 3165 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3166
1acf2318 3167 if (!eth_dn) {
8c4877a4 3168 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3169 return -EINVAL;
3170 }
e542aa6b 3171
1211bb6d 3172 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3173 pr_err("creating MR failed\n");
1211bb6d
TK		 3174 return -EIO;
3175 }
3176
1acf2318 3177 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3178
1eef4e04
JBT		 3179 of_node_put(eth_dn);
3180
1acf2318 3181 if (port) {
508d2b5d 3182 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3183 if (!adapter->port[i]) {
3184 adapter->port[i] = port;
3185 break;
3186 }
7a291083 3187
8c4877a4
JP		 3188 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3189 logical_port_id);
1211bb6d
TK		 3190 } else {
3191 ehea_remove_adapter_mr(adapter);
e542aa6b 3192 return -EIO;
1211bb6d 3193 }
7a291083 3194
1acf2318
JBT		 3195 return (ssize_t) count;
3196}
3197
3198static ssize_t ehea_remove_port(struct device *dev,
3199 struct device_attribute *attr,
3200 const char *buf, size_t count)
3201{
c7ae011d 3202 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3203 struct ehea_port *port;
3204 int i;
3205 u32 logical_port_id;
3206
a8e34fda 3207 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3208
3209 port = ehea_get_port(adapter, logical_port_id);
3210
3211 if (port) {
8c4877a4
JP		 3212 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3213 logical_port_id);
1acf2318
JBT		 3214
3215 ehea_shutdown_single_port(port);
3216
508d2b5d 3217 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3218 if (adapter->port[i] == port) {
3219 adapter->port[i] = NULL;
3220 break;
3221 }
3222 } else {
8c4877a4
JP		 3223 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3224 logical_port_id);
1acf2318
JBT		 3225 return -EINVAL;
3226 }
3227
1211bb6d
TK		 3228 ehea_remove_adapter_mr(adapter);
3229
1acf2318
JBT		 3230 return (ssize_t) count;
3231}
3232
3233static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3234static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3235
1886e5d2 3236static int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3237{
6b08f3ae 3238 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3239 if (ret)
3240 goto out;
3241
6b08f3ae 3242 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3243out:
7a291083
JBT		 3244 return ret;
3245}
3246
1886e5d2 3247static void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3248{
6b08f3ae
JF		 3249 device_remove_file(&dev->dev, &dev_attr_probe_port);
3250 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3251}
3252
0297be07 3253static int ehea_probe_adapter(struct platform_device *dev,
1dd06ae8 3254 const struct of_device_id *id)
7a291083
JBT		 3255{
3256 struct ehea_adapter *adapter;
9f9a3b8a 3257 const u64 *adapter_handle;
7a291083 3258 int ret;
c2f1244b 3259 int i;
7a291083 3260
61c7a080 3261 if (!dev || !dev->dev.of_node) {
8c4877a4 3262 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3263 return -EINVAL;
3264 }
3265
7a291083
JBT		 3266 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3267 if (!adapter) {
3268 ret = -ENOMEM;
6b08f3ae 3269 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3270 goto out;
3271 }
3272
44c82152
TK		 3273 list_add(&adapter->list, &adapter_list);
3274
6b08f3ae 3275 adapter->ofdev = dev;
1acf2318 3276
61c7a080 3277 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3278 NULL);
061bf3cd
TK		 3279 if (adapter_handle)
3280 adapter->handle = *adapter_handle;
3281
3282 if (!adapter->handle) {
6b08f3ae 3283 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3284 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3285 ret = -ENODEV;
3286 goto out_free_ad;
3287 }
3288
7a291083
JBT		 3289 adapter->pd = EHEA_PD_ID;
3290
c7ae011d 3291 dev_set_drvdata(&dev->dev, adapter);
7a291083 3292
7a291083
JBT		 3293
3294 /* initialize adapter and ports */
3295 /* get adapter properties */
3296 ret = ehea_sense_adapter_attr(adapter);
3297 if (ret) {
898eb71c 3298 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3299 goto out_free_ad;
7a291083 3300 }
7a291083
JBT		 3301
3302 adapter->neq = ehea_create_eq(adapter,
3303 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3304 if (!adapter->neq) {
1eef4e04 3305 ret = -EIO;
898eb71c 3306 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3307 goto out_free_ad;
7a291083
JBT		 3308 }
3309
3310 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3311 (unsigned long)adapter);
3312
1eef4e04
JBT		 3313 ret = ehea_create_device_sysfs(dev);
3314 if (ret)
c2f1244b 3315 goto out_kill_eq;
1acf2318 3316
7a291083
JBT		 3317 ret = ehea_setup_ports(adapter);
3318 if (ret) {
898eb71c 3319 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3320 goto out_rem_dev_sysfs;
7a291083
JBT		 3321 }
3322
c2f1244b
TLSC		 3323 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3324 ehea_interrupt_neq, IRQF_DISABLED,
3325 "ehea_neq", adapter);
3326 if (ret) {
3327 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3328 goto out_shutdown_ports;
3329 }
3330
380ec964
TLSC		 3331 /* Handle any events that might be pending. */
3332 tasklet_hi_schedule(&adapter->neq_tasklet);
c2f1244b 3333
7a291083
JBT		 3334 ret = 0;
3335 goto out;
3336
c2f1244b
TLSC		 3337out_shutdown_ports:
3338 for (i = 0; i < EHEA_MAX_PORTS; i++)
3339 if (adapter->port[i]) {
3340 ehea_shutdown_single_port(adapter->port[i]);
3341 adapter->port[i] = NULL;
3342 }
3343
1acf2318
JBT		 3344out_rem_dev_sysfs:
3345 ehea_remove_device_sysfs(dev);
3346
7a291083
JBT		 3347out_kill_eq:
3348 ehea_destroy_eq(adapter->neq);
3349
7a291083 3350out_free_ad:
51621fbd 3351 list_del(&adapter->list);
7a291083 3352 kfree(adapter);
21eee2dd 3353
7a291083 3354out:
21eee2dd 3355 ehea_update_firmware_handles();
52e21b1b 3356
7a291083
JBT		 3357 return ret;
3358}
3359
0297be07 3360static int ehea_remove(struct platform_device *dev)
7a291083 3361{
c7ae011d 3362 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3363 int i;
3364
1acf2318 3365 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3366 if (adapter->port[i]) {
3367 ehea_shutdown_single_port(adapter->port[i]);
3368 adapter->port[i] = NULL;
3369 }
1acf2318
JBT		 3370
3371 ehea_remove_device_sysfs(dev);
3372
6b08f3ae 3373 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3374 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3375
3376 ehea_destroy_eq(adapter->neq);
1211bb6d 3377 ehea_remove_adapter_mr(adapter);
44c82152 3378 list_del(&adapter->list);
7a291083 3379 kfree(adapter);
44c82152 3380
21eee2dd 3381 ehea_update_firmware_handles();
21eee2dd 3382
7a291083
JBT		 3383 return 0;
3384}
3385
1886e5d2 3386static void ehea_crash_handler(void)
21eee2dd
TK		 3387{
3388 int i;
3389
3390 if (ehea_fw_handles.arr)
3391 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3392 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3393 ehea_fw_handles.arr[i].fwh,
3394 FORCE_FREE);
3395
3396 if (ehea_bcmc_regs.arr)
3397 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3398 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3399 ehea_bcmc_regs.arr[i].port_id,
3400 ehea_bcmc_regs.arr[i].reg_type,
3401 ehea_bcmc_regs.arr[i].macaddr,
3402 0, H_DEREG_BCMC);
3403}
3404
48cfb14f
HH		 3405static int ehea_mem_notifier(struct notifier_block *nb,
3406 unsigned long action, void *data)
3407{
a7c561f2 3408 int ret = NOTIFY_BAD;
d4f12daf 3409 struct memory_notify *arg = data;
a7c561f2 3410
099473c1 3411 mutex_lock(&dlpar_mem_lock);
a7c561f2 3412
48cfb14f 3413 switch (action) {
d4f12daf 3414 case MEM_CANCEL_OFFLINE:
8c4877a4 3415 pr_info("memory offlining canceled");
d4f12daf
HH		 3416 /* Readd canceled memory block */
3417 case MEM_ONLINE:
8c4877a4 3418 pr_info("memory is going online");
3876732c 3419 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3420 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3421 goto out_unlock;
3d6b892b 3422 ehea_rereg_mrs();
d4f12daf
HH		 3423 break;
3424 case MEM_GOING_OFFLINE:
8c4877a4 3425 pr_info("memory is going offline");
3876732c 3426 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3427 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3428 goto out_unlock;
3d6b892b 3429 ehea_rereg_mrs();
48cfb14f
HH		 3430 break;
3431 default:
3432 break;
3433 }
52e21b1b
JBT		 3434
3435 ehea_update_firmware_handles();
a7c561f2 3436 ret = NOTIFY_OK;
52e21b1b 3437
a7c561f2
TK		 3438out_unlock:
3439 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3440 return ret;
48cfb14f
HH		 3441}
3442
3443static struct notifier_block ehea_mem_nb = {
3444 .notifier_call = ehea_mem_notifier,
3445};
3446
2a6f4e49
JBT		 3447static int ehea_reboot_notifier(struct notifier_block *nb,
3448 unsigned long action, void *unused)
3449{
3450 if (action == SYS_RESTART) {
8c4877a4 3451 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3452 ibmebus_unregister_driver(&ehea_driver);
3453 }
3454 return NOTIFY_DONE;
3455}
3456
3457static struct notifier_block ehea_reboot_nb = {
508d2b5d 3458 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3459};
3460
7a291083
JBT		 3461static int check_module_parm(void)
3462{
3463 int ret = 0;
3464
3465 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3466 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3467 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3468 ret = -EINVAL;
3469 }
3470 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3471 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3472 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3473 ret = -EINVAL;
3474 }
3475 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3476 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3477 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3478 ret = -EINVAL;
3479 }
3480 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3481 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3482 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3483 ret = -EINVAL;
3484 }
3485
3486 return ret;
3487}
3488
4c3ca4da
JBT		 3489static ssize_t ehea_show_capabilities(struct device_driver *drv,
3490 char *buf)
3491{
3492 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3493}
3494
3495static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3496 ehea_show_capabilities, NULL);
3497
1886e5d2 3498static int __init ehea_module_init(void)
7a291083
JBT		 3499{
3500 int ret;
3501
8c4877a4 3502 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3503
21eee2dd
TK		 3504 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3505 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3506
9f71a568 3507 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3508 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3509
7a291083
JBT		 3510 ret = check_module_parm();
3511 if (ret)
3512 goto out;
44c82152
TK		 3513
3514 ret = ehea_create_busmap();
3515 if (ret)
3516 goto out;
3517
21eee2dd
TK		 3518 ret = register_reboot_notifier(&ehea_reboot_nb);
3519 if (ret)
8c4877a4 3520 pr_info("failed registering reboot notifier\n");
21eee2dd 3521
48cfb14f
HH		 3522 ret = register_memory_notifier(&ehea_mem_nb);
3523 if (ret)
8c4877a4 3524 pr_info("failed registering memory remove notifier\n");
48cfb14f 3525
c061b18d 3526 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3527 if (ret)
8c4877a4 3528 pr_info("failed registering crash handler\n");
2a6f4e49 3529
7a291083 3530 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3531 if (ret) {
8c4877a4 3532 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3533 goto out2;
4c3ca4da
JBT		 3534 }
3535
3536 ret = driver_create_file(&ehea_driver.driver,
3537 &driver_attr_capabilities);
3538 if (ret) {
8c4877a4
JP		 3539 pr_err("failed to register capabilities attribute, ret=%d\n",
3540 ret);
21eee2dd 3541 goto out3;
4c3ca4da 3542 }
7a291083 3543
21eee2dd
TK		 3544 return ret;
3545
3546out3:
3547 ibmebus_unregister_driver(&ehea_driver);
3548out2:
48cfb14f 3549 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3550 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3551 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3552out:
3553 return ret;
3554}
3555
3556static void __exit ehea_module_exit(void)
3557{
21eee2dd
TK		 3558 int ret;
3559
4c3ca4da 3560 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3561 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3562 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3563 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3564 if (ret)
8c4877a4 3565 pr_info("failed unregistering crash handler\n");
48cfb14f 3566 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3567 kfree(ehea_fw_handles.arr);
3568 kfree(ehea_bcmc_regs.arr);
44c82152 3569 ehea_destroy_busmap();
7a291083
JBT		 3570}
3571
3572module_init(ehea_module_init);
3573module_exit(ehea_module_exit);
Ubuntu Artful kernel mirror