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7a291083 JBT |
1 | /* |
2 | * linux/drivers/net/ehea/ehea_main.c | |
3 | * | |
4 | * eHEA ethernet device driver for IBM eServer System p | |
5 | * | |
6 | * (C) Copyright IBM Corp. 2006 | |
7 | * | |
8 | * Authors: | |
9 | * Christoph Raisch <raisch@de.ibm.com> | |
10 | * Jan-Bernd Themann <themann@de.ibm.com> | |
11 | * Thomas Klein <tklein@de.ibm.com> | |
12 | * | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #include <linux/in.h> | |
30 | #include <linux/ip.h> | |
31 | #include <linux/tcp.h> | |
32 | #include <linux/udp.h> | |
33 | #include <linux/if.h> | |
34 | #include <linux/list.h> | |
35 | #include <linux/if_ether.h> | |
36 | #include <net/ip.h> | |
37 | ||
38 | #include "ehea.h" | |
39 | #include "ehea_qmr.h" | |
40 | #include "ehea_phyp.h" | |
41 | ||
42 | ||
43 | MODULE_LICENSE("GPL"); | |
44 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
45 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
46 | MODULE_VERSION(DRV_VERSION); | |
47 | ||
48 | ||
49 | static int msg_level = -1; | |
50 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
51 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
52 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
53 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
18604c54 JBT |
54 | static int use_mcs = 0; |
55 | static int num_tx_qps = EHEA_NUM_TX_QP; | |
7a291083 JBT |
56 | |
57 | module_param(msg_level, int, 0); | |
58 | module_param(rq1_entries, int, 0); | |
59 | module_param(rq2_entries, int, 0); | |
60 | module_param(rq3_entries, int, 0); | |
61 | module_param(sq_entries, int, 0); | |
18604c54 JBT |
62 | module_param(use_mcs, int, 0); |
63 | module_param(num_tx_qps, int, 0); | |
7a291083 | 64 | |
18604c54 | 65 | MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
7a291083 JBT |
66 | MODULE_PARM_DESC(msg_level, "msg_level"); |
67 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " | |
68 | "[2^x - 1], x = [6..14]. Default = " | |
69 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); | |
70 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
71 | "[2^x - 1], x = [6..14]. Default = " | |
72 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); | |
73 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
74 | "[2^x - 1], x = [6..14]. Default = " | |
75 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); | |
76 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
77 | "[2^x - 1], x = [6..14]. Default = " | |
78 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); | |
18072a5b | 79 | MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
7a291083 | 80 | |
d1dea38d | 81 | static int port_name_cnt = 0; |
44c82152 TK |
82 | static LIST_HEAD(adapter_list); |
83 | u64 ehea_driver_flags = 0; | |
84 | struct workqueue_struct *ehea_driver_wq; | |
85 | struct work_struct ehea_rereg_mr_task; | |
86 | ||
d1dea38d TK |
87 | |
88 | static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev, | |
d1d25aab | 89 | const struct of_device_id *id); |
d1dea38d TK |
90 | |
91 | static int __devexit ehea_remove(struct ibmebus_dev *dev); | |
92 | ||
93 | static struct of_device_id ehea_device_table[] = { | |
94 | { | |
95 | .name = "lhea", | |
96 | .compatible = "IBM,lhea", | |
97 | }, | |
98 | {}, | |
99 | }; | |
100 | ||
101 | static struct ibmebus_driver ehea_driver = { | |
102 | .name = "ehea", | |
103 | .id_table = ehea_device_table, | |
104 | .probe = ehea_probe_adapter, | |
105 | .remove = ehea_remove, | |
106 | }; | |
107 | ||
7a291083 JBT |
108 | void ehea_dump(void *adr, int len, char *msg) { |
109 | int x; | |
110 | unsigned char *deb = adr; | |
111 | for (x = 0; x < len; x += 16) { | |
d2db9eea | 112 | printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg, |
7a291083 JBT |
113 | deb, x, *((u64*)&deb[0]), *((u64*)&deb[8])); |
114 | deb += 16; | |
115 | } | |
116 | } | |
117 | ||
118 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) | |
119 | { | |
120 | struct ehea_port *port = netdev_priv(dev); | |
121 | struct net_device_stats *stats = &port->stats; | |
122 | struct hcp_ehea_port_cb2 *cb2; | |
123 | u64 hret, rx_packets; | |
124 | int i; | |
125 | ||
126 | memset(stats, 0, sizeof(*stats)); | |
127 | ||
a1d261c5 | 128 | cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
129 | if (!cb2) { |
130 | ehea_error("no mem for cb2"); | |
131 | goto out; | |
132 | } | |
133 | ||
134 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
135 | port->logical_port_id, | |
136 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
137 | if (hret != H_SUCCESS) { | |
138 | ehea_error("query_ehea_port failed"); | |
139 | goto out_herr; | |
140 | } | |
141 | ||
142 | if (netif_msg_hw(port)) | |
143 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
144 | ||
145 | rx_packets = 0; | |
146 | for (i = 0; i < port->num_def_qps; i++) | |
147 | rx_packets += port->port_res[i].rx_packets; | |
148 | ||
149 | stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp; | |
150 | stats->multicast = cb2->rxmcp; | |
151 | stats->rx_errors = cb2->rxuerr; | |
152 | stats->rx_bytes = cb2->rxo; | |
153 | stats->tx_bytes = cb2->txo; | |
154 | stats->rx_packets = rx_packets; | |
155 | ||
156 | out_herr: | |
157 | kfree(cb2); | |
158 | out: | |
159 | return stats; | |
160 | } | |
161 | ||
162 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
163 | { | |
164 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
165 | struct net_device *dev = pr->port->netdev; | |
166 | int max_index_mask = pr->rq1_skba.len - 1; | |
167 | int i; | |
168 | ||
169 | if (!nr_of_wqes) | |
170 | return; | |
171 | ||
172 | for (i = 0; i < nr_of_wqes; i++) { | |
173 | if (!skb_arr_rq1[index]) { | |
174 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
175 | EHEA_L_PKT_SIZE); | |
176 | if (!skb_arr_rq1[index]) { | |
177 | ehea_error("%s: no mem for skb/%d wqes filled", | |
178 | dev->name, i); | |
179 | break; | |
180 | } | |
181 | } | |
182 | index--; | |
183 | index &= max_index_mask; | |
184 | } | |
185 | /* Ring doorbell */ | |
186 | ehea_update_rq1a(pr->qp, i); | |
187 | } | |
188 | ||
189 | static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) | |
190 | { | |
191 | int ret = 0; | |
192 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
193 | struct net_device *dev = pr->port->netdev; | |
194 | int i; | |
195 | ||
196 | for (i = 0; i < pr->rq1_skba.len; i++) { | |
197 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); | |
198 | if (!skb_arr_rq1[i]) { | |
199 | ehea_error("%s: no mem for skb/%d wqes filled", | |
200 | dev->name, i); | |
201 | ret = -ENOMEM; | |
202 | goto out; | |
203 | } | |
204 | } | |
205 | /* Ring doorbell */ | |
206 | ehea_update_rq1a(pr->qp, nr_rq1a); | |
207 | out: | |
208 | return ret; | |
209 | } | |
210 | ||
211 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
212 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
213 | int num_wqes, int wqe_type, int packet_size) | |
214 | { | |
215 | struct net_device *dev = pr->port->netdev; | |
216 | struct ehea_qp *qp = pr->qp; | |
217 | struct sk_buff **skb_arr = q_skba->arr; | |
218 | struct ehea_rwqe *rwqe; | |
219 | int i, index, max_index_mask, fill_wqes; | |
220 | int ret = 0; | |
221 | ||
222 | fill_wqes = q_skba->os_skbs + num_wqes; | |
223 | ||
224 | if (!fill_wqes) | |
225 | return ret; | |
226 | ||
227 | index = q_skba->index; | |
228 | max_index_mask = q_skba->len - 1; | |
229 | for (i = 0; i < fill_wqes; i++) { | |
230 | struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); | |
231 | if (!skb) { | |
232 | ehea_error("%s: no mem for skb/%d wqes filled", | |
18604c54 | 233 | pr->port->netdev->name, i); |
7a291083 JBT |
234 | q_skba->os_skbs = fill_wqes - i; |
235 | ret = -ENOMEM; | |
236 | break; | |
237 | } | |
238 | skb_reserve(skb, NET_IP_ALIGN); | |
239 | ||
240 | skb_arr[index] = skb; | |
241 | ||
242 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
243 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 244 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 245 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
44c82152 | 246 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); |
7a291083 JBT |
247 | rwqe->sg_list[0].len = packet_size; |
248 | rwqe->data_segments = 1; | |
249 | ||
250 | index++; | |
251 | index &= max_index_mask; | |
44c82152 TK |
252 | |
253 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) | |
254 | goto out; | |
7a291083 | 255 | } |
44c82152 | 256 | |
7a291083 JBT |
257 | q_skba->index = index; |
258 | ||
259 | /* Ring doorbell */ | |
260 | iosync(); | |
261 | if (rq_nr == 2) | |
262 | ehea_update_rq2a(pr->qp, i); | |
263 | else | |
264 | ehea_update_rq3a(pr->qp, i); | |
44c82152 | 265 | out: |
7a291083 JBT |
266 | return ret; |
267 | } | |
268 | ||
269 | ||
270 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
271 | { | |
272 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
273 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
274 | EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); | |
275 | } | |
276 | ||
277 | ||
278 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
279 | { | |
280 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
281 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
282 | EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); | |
283 | } | |
284 | ||
285 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
286 | { | |
287 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
288 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
289 | return 0; | |
290 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
291 | (cqe->header_length == 0)) | |
292 | return 0; | |
293 | return -EINVAL; | |
294 | } | |
295 | ||
296 | static inline void ehea_fill_skb(struct net_device *dev, | |
297 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
298 | { | |
299 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
300 | ||
301 | skb_put(skb, length); | |
302 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
303 | skb->protocol = eth_type_trans(skb, dev); | |
304 | } | |
305 | ||
306 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
307 | int arr_len, | |
308 | struct ehea_cqe *cqe) | |
309 | { | |
310 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
311 | struct sk_buff *skb; | |
312 | void *pref; | |
313 | int x; | |
314 | ||
315 | x = skb_index + 1; | |
316 | x &= (arr_len - 1); | |
317 | ||
318 | pref = skb_array[x]; | |
319 | prefetchw(pref); | |
320 | prefetchw(pref + EHEA_CACHE_LINE); | |
321 | ||
322 | pref = (skb_array[x]->data); | |
323 | prefetch(pref); | |
324 | prefetch(pref + EHEA_CACHE_LINE); | |
325 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
326 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
327 | skb = skb_array[skb_index]; | |
328 | skb_array[skb_index] = NULL; | |
329 | return skb; | |
330 | } | |
331 | ||
332 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
333 | int arr_len, int wqe_index) | |
334 | { | |
335 | struct sk_buff *skb; | |
336 | void *pref; | |
337 | int x; | |
338 | ||
339 | x = wqe_index + 1; | |
340 | x &= (arr_len - 1); | |
341 | ||
342 | pref = skb_array[x]; | |
343 | prefetchw(pref); | |
344 | prefetchw(pref + EHEA_CACHE_LINE); | |
345 | ||
346 | pref = (skb_array[x]->data); | |
347 | prefetchw(pref); | |
348 | prefetchw(pref + EHEA_CACHE_LINE); | |
349 | ||
350 | skb = skb_array[wqe_index]; | |
351 | skb_array[wqe_index] = NULL; | |
352 | return skb; | |
353 | } | |
354 | ||
355 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
356 | struct ehea_cqe *cqe, int *processed_rq2, | |
357 | int *processed_rq3) | |
358 | { | |
359 | struct sk_buff *skb; | |
360 | ||
acbddb59 JBT |
361 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
362 | pr->p_stats.err_tcp_cksum++; | |
363 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
364 | pr->p_stats.err_ip_cksum++; | |
365 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
366 | pr->p_stats.err_frame_crc++; | |
367 | ||
7a291083 JBT |
368 | if (netif_msg_rx_err(pr->port)) { |
369 | ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr); | |
370 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
371 | } | |
372 | ||
373 | if (rq == 2) { | |
374 | *processed_rq2 += 1; | |
375 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
376 | dev_kfree_skb(skb); | |
377 | } else if (rq == 3) { | |
378 | *processed_rq3 += 1; | |
379 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
380 | dev_kfree_skb(skb); | |
381 | } | |
382 | ||
383 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
384 | ehea_error("Critical receive error. Resetting port."); | |
385 | queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task); | |
386 | return 1; | |
387 | } | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
18604c54 JBT |
392 | static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, |
393 | struct ehea_port_res *pr, | |
394 | int *budget) | |
7a291083 | 395 | { |
18604c54 | 396 | struct ehea_port *port = pr->port; |
7a291083 JBT |
397 | struct ehea_qp *qp = pr->qp; |
398 | struct ehea_cqe *cqe; | |
399 | struct sk_buff *skb; | |
400 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
401 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
402 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
403 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
404 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
405 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
406 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
18604c54 | 407 | int wqe_index, last_wqe_index, rq, my_quota, port_reset; |
7a291083 JBT |
408 | |
409 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
410 | last_wqe_index = 0; | |
411 | my_quota = min(*budget, dev->quota); | |
7a291083 | 412 | |
7a291083 JBT |
413 | cqe = ehea_poll_rq1(qp, &wqe_index); |
414 | while ((my_quota > 0) && cqe) { | |
415 | ehea_inc_rq1(qp); | |
416 | processed_rq1++; | |
417 | processed++; | |
418 | my_quota--; | |
419 | if (netif_msg_rx_status(port)) | |
420 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
421 | ||
422 | last_wqe_index = wqe_index; | |
423 | rmb(); | |
424 | if (!ehea_check_cqe(cqe, &rq)) { | |
425 | if (rq == 1) { /* LL RQ1 */ | |
426 | skb = get_skb_by_index_ll(skb_arr_rq1, | |
427 | skb_arr_rq1_len, | |
428 | wqe_index); | |
429 | if (unlikely(!skb)) { | |
430 | if (netif_msg_rx_err(port)) | |
431 | ehea_error("LL rq1: skb=NULL"); | |
18604c54 JBT |
432 | |
433 | skb = netdev_alloc_skb(port->netdev, | |
7a291083 JBT |
434 | EHEA_L_PKT_SIZE); |
435 | if (!skb) | |
436 | break; | |
437 | } | |
27d7ff46 | 438 | skb_copy_to_linear_data(skb, ((char*)cqe) + 64, |
d1d25aab | 439 | cqe->num_bytes_transfered - 4); |
ade21372 | 440 | ehea_fill_skb(port->netdev, skb, cqe); |
7a291083 JBT |
441 | } else if (rq == 2) { /* RQ2 */ |
442 | skb = get_skb_by_index(skb_arr_rq2, | |
443 | skb_arr_rq2_len, cqe); | |
444 | if (unlikely(!skb)) { | |
445 | if (netif_msg_rx_err(port)) | |
446 | ehea_error("rq2: skb=NULL"); | |
447 | break; | |
448 | } | |
18604c54 | 449 | ehea_fill_skb(port->netdev, skb, cqe); |
7a291083 JBT |
450 | processed_rq2++; |
451 | } else { /* RQ3 */ | |
452 | skb = get_skb_by_index(skb_arr_rq3, | |
453 | skb_arr_rq3_len, cqe); | |
454 | if (unlikely(!skb)) { | |
455 | if (netif_msg_rx_err(port)) | |
456 | ehea_error("rq3: skb=NULL"); | |
457 | break; | |
458 | } | |
18604c54 | 459 | ehea_fill_skb(port->netdev, skb, cqe); |
7a291083 JBT |
460 | processed_rq3++; |
461 | } | |
462 | ||
dec590c1 TK |
463 | if ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) |
464 | && port->vgrp) | |
7a291083 JBT |
465 | vlan_hwaccel_receive_skb(skb, port->vgrp, |
466 | cqe->vlan_tag); | |
467 | else | |
468 | netif_receive_skb(skb); | |
f9e29228 TK |
469 | |
470 | dev->last_rx = jiffies; | |
18604c54 | 471 | } else { |
acbddb59 | 472 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
473 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
474 | &processed_rq2, | |
475 | &processed_rq3); | |
476 | if (port_reset) | |
477 | break; | |
478 | } | |
479 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
480 | } | |
481 | ||
7a291083 | 482 | pr->rx_packets += processed; |
18604c54 | 483 | *budget -= processed; |
7a291083 JBT |
484 | |
485 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
486 | ehea_refill_rq2(pr, processed_rq2); | |
487 | ehea_refill_rq3(pr, processed_rq3); | |
488 | ||
18604c54 JBT |
489 | cqe = ehea_poll_rq1(qp, &wqe_index); |
490 | return cqe; | |
7a291083 JBT |
491 | } |
492 | ||
18604c54 | 493 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 494 | { |
acbddb59 | 495 | struct sk_buff *skb; |
7a291083 JBT |
496 | struct ehea_cq *send_cq = pr->send_cq; |
497 | struct ehea_cqe *cqe; | |
18604c54 | 498 | int quota = my_quota; |
7a291083 JBT |
499 | int cqe_counter = 0; |
500 | int swqe_av = 0; | |
acbddb59 | 501 | int index; |
7a291083 JBT |
502 | unsigned long flags; |
503 | ||
18604c54 JBT |
504 | cqe = ehea_poll_cq(send_cq); |
505 | while(cqe && (quota > 0)) { | |
506 | ehea_inc_cq(send_cq); | |
507 | ||
7a291083 JBT |
508 | cqe_counter++; |
509 | rmb(); | |
510 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { | |
511 | ehea_error("Send Completion Error: Resetting port"); | |
512 | if (netif_msg_tx_err(pr->port)) | |
513 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
514 | queue_work(pr->port->adapter->ehea_wq, | |
515 | &pr->port->reset_task); | |
516 | break; | |
517 | } | |
518 | ||
519 | if (netif_msg_tx_done(pr->port)) | |
520 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
521 | ||
522 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
523 | == EHEA_SWQE2_TYPE)) { |
524 | ||
525 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
526 | skb = pr->sq_skba.arr[index]; | |
527 | dev_kfree_skb(skb); | |
528 | pr->sq_skba.arr[index] = NULL; | |
529 | } | |
7a291083 JBT |
530 | |
531 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
532 | quota--; | |
18604c54 JBT |
533 | |
534 | cqe = ehea_poll_cq(send_cq); | |
535 | }; | |
7a291083 JBT |
536 | |
537 | ehea_update_feca(send_cq, cqe_counter); | |
538 | atomic_add(swqe_av, &pr->swqe_avail); | |
539 | ||
540 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 541 | |
7a291083 JBT |
542 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
543 | >= pr->swqe_refill_th)) { | |
544 | netif_wake_queue(pr->port->netdev); | |
545 | pr->queue_stopped = 0; | |
546 | } | |
547 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
548 | ||
18604c54 | 549 | return cqe; |
7a291083 JBT |
550 | } |
551 | ||
18604c54 JBT |
552 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
553 | ||
554 | static int ehea_poll(struct net_device *dev, int *budget) | |
7a291083 | 555 | { |
18604c54 JBT |
556 | struct ehea_port_res *pr = dev->priv; |
557 | struct ehea_cqe *cqe; | |
558 | struct ehea_cqe *cqe_skb = NULL; | |
559 | int force_irq, wqe_index; | |
560 | ||
561 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); | |
562 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
563 | ||
564 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
565 | ||
566 | if ((!cqe && !cqe_skb) || force_irq) { | |
567 | pr->poll_counter = 0; | |
568 | netif_rx_complete(dev); | |
569 | ehea_reset_cq_ep(pr->recv_cq); | |
570 | ehea_reset_cq_ep(pr->send_cq); | |
571 | ehea_reset_cq_n1(pr->recv_cq); | |
572 | ehea_reset_cq_n1(pr->send_cq); | |
573 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); | |
574 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
575 | ||
e542aa6b | 576 | if (!cqe && !cqe_skb) |
18604c54 JBT |
577 | return 0; |
578 | ||
e542aa6b | 579 | if (!netif_rx_reschedule(dev, dev->quota)) |
18604c54 JBT |
580 | return 0; |
581 | } | |
e542aa6b | 582 | |
18604c54 JBT |
583 | cqe = ehea_proc_rwqes(dev, pr, budget); |
584 | cqe_skb = ehea_proc_cqes(pr, 300); | |
585 | ||
586 | if (cqe || cqe_skb) | |
587 | pr->poll_counter++; | |
e542aa6b | 588 | |
18604c54 | 589 | return 1; |
7a291083 JBT |
590 | } |
591 | ||
8d22c971 JBT |
592 | #ifdef CONFIG_NET_POLL_CONTROLLER |
593 | static void ehea_netpoll(struct net_device *dev) | |
594 | { | |
595 | struct ehea_port *port = netdev_priv(dev); | |
596 | ||
597 | netif_rx_schedule(port->port_res[0].d_netdev); | |
598 | } | |
599 | #endif | |
600 | ||
601 | static int ehea_poll_firstqueue(struct net_device *dev, int *budget) | |
602 | { | |
603 | struct ehea_port *port = netdev_priv(dev); | |
604 | struct net_device *d_dev = port->port_res[0].d_netdev; | |
605 | ||
606 | return ehea_poll(d_dev, budget); | |
607 | } | |
608 | ||
7d12e780 | 609 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
610 | { |
611 | struct ehea_port_res *pr = param; | |
18604c54 JBT |
612 | |
613 | netif_rx_schedule(pr->d_netdev); | |
614 | ||
7a291083 JBT |
615 | return IRQ_HANDLED; |
616 | } | |
617 | ||
7d12e780 | 618 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
619 | { |
620 | struct ehea_port *port = param; | |
621 | struct ehea_eqe *eqe; | |
d2db9eea | 622 | struct ehea_qp *qp; |
7a291083 JBT |
623 | u32 qp_token; |
624 | ||
625 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 626 | |
7a291083 | 627 | while (eqe) { |
7a291083 | 628 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
bb3a6449 TK |
629 | ehea_error("QP aff_err: entry=0x%lx, token=0x%x", |
630 | eqe->entry, qp_token); | |
d2db9eea JBT |
631 | |
632 | qp = port->port_res[qp_token].qp; | |
633 | ehea_error_data(port->adapter, qp->fw_handle); | |
bb3a6449 | 634 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
635 | } |
636 | ||
d2db9eea JBT |
637 | queue_work(port->adapter->ehea_wq, &port->reset_task); |
638 | ||
7a291083 JBT |
639 | return IRQ_HANDLED; |
640 | } | |
641 | ||
642 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
643 | int logical_port) | |
644 | { | |
645 | int i; | |
646 | ||
1acf2318 | 647 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 648 | if (adapter->port[i]) |
d1d25aab | 649 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 650 | return adapter->port[i]; |
7a291083 JBT |
651 | return NULL; |
652 | } | |
653 | ||
654 | int ehea_sense_port_attr(struct ehea_port *port) | |
655 | { | |
656 | int ret; | |
657 | u64 hret; | |
658 | struct hcp_ehea_port_cb0 *cb0; | |
659 | ||
a1d261c5 TK |
660 | cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */ |
661 | if (!cb0) { /* ehea_neq_tasklet() */ | |
7a291083 JBT |
662 | ehea_error("no mem for cb0"); |
663 | ret = -ENOMEM; | |
664 | goto out; | |
665 | } | |
666 | ||
667 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
668 | port->logical_port_id, H_PORT_CB0, | |
669 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
670 | cb0); | |
671 | if (hret != H_SUCCESS) { | |
672 | ret = -EIO; | |
673 | goto out_free; | |
674 | } | |
675 | ||
676 | /* MAC address */ | |
677 | port->mac_addr = cb0->port_mac_addr << 16; | |
678 | ||
679 | if (!is_valid_ether_addr((u8*)&port->mac_addr)) { | |
680 | ret = -EADDRNOTAVAIL; | |
681 | goto out_free; | |
682 | } | |
683 | ||
684 | /* Port speed */ | |
685 | switch (cb0->port_speed) { | |
686 | case H_SPEED_10M_H: | |
687 | port->port_speed = EHEA_SPEED_10M; | |
688 | port->full_duplex = 0; | |
689 | break; | |
690 | case H_SPEED_10M_F: | |
691 | port->port_speed = EHEA_SPEED_10M; | |
692 | port->full_duplex = 1; | |
693 | break; | |
694 | case H_SPEED_100M_H: | |
695 | port->port_speed = EHEA_SPEED_100M; | |
696 | port->full_duplex = 0; | |
697 | break; | |
698 | case H_SPEED_100M_F: | |
699 | port->port_speed = EHEA_SPEED_100M; | |
700 | port->full_duplex = 1; | |
701 | break; | |
702 | case H_SPEED_1G_F: | |
703 | port->port_speed = EHEA_SPEED_1G; | |
704 | port->full_duplex = 1; | |
705 | break; | |
706 | case H_SPEED_10G_F: | |
707 | port->port_speed = EHEA_SPEED_10G; | |
708 | port->full_duplex = 1; | |
709 | break; | |
710 | default: | |
711 | port->port_speed = 0; | |
712 | port->full_duplex = 0; | |
713 | break; | |
714 | } | |
715 | ||
e919b593 | 716 | port->autoneg = 1; |
18604c54 | 717 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 718 | |
7a291083 | 719 | /* Number of default QPs */ |
18604c54 JBT |
720 | if (use_mcs) |
721 | port->num_def_qps = cb0->num_default_qps; | |
722 | else | |
723 | port->num_def_qps = 1; | |
7a291083 JBT |
724 | |
725 | if (!port->num_def_qps) { | |
726 | ret = -EINVAL; | |
727 | goto out_free; | |
728 | } | |
729 | ||
18604c54 JBT |
730 | port->num_tx_qps = num_tx_qps; |
731 | ||
732 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
733 | port->num_add_tx_qps = 0; |
734 | else | |
18604c54 | 735 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
736 | |
737 | ret = 0; | |
738 | out_free: | |
739 | if (ret || netif_msg_probe(port)) | |
740 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
741 | kfree(cb0); | |
742 | out: | |
743 | return ret; | |
744 | } | |
745 | ||
746 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
747 | { | |
748 | struct hcp_ehea_port_cb4 *cb4; | |
749 | u64 hret; | |
750 | int ret = 0; | |
751 | ||
a1d261c5 | 752 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
753 | if (!cb4) { |
754 | ehea_error("no mem for cb4"); | |
755 | ret = -ENOMEM; | |
756 | goto out; | |
757 | } | |
758 | ||
759 | cb4->port_speed = port_speed; | |
760 | ||
761 | netif_carrier_off(port->netdev); | |
762 | ||
763 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
764 | port->logical_port_id, | |
765 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
766 | if (hret == H_SUCCESS) { | |
767 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
768 | ||
769 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
770 | port->logical_port_id, | |
771 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
772 | cb4); | |
773 | if (hret == H_SUCCESS) { | |
774 | switch (cb4->port_speed) { | |
775 | case H_SPEED_10M_H: | |
776 | port->port_speed = EHEA_SPEED_10M; | |
777 | port->full_duplex = 0; | |
778 | break; | |
779 | case H_SPEED_10M_F: | |
780 | port->port_speed = EHEA_SPEED_10M; | |
781 | port->full_duplex = 1; | |
782 | break; | |
783 | case H_SPEED_100M_H: | |
784 | port->port_speed = EHEA_SPEED_100M; | |
785 | port->full_duplex = 0; | |
786 | break; | |
787 | case H_SPEED_100M_F: | |
788 | port->port_speed = EHEA_SPEED_100M; | |
789 | port->full_duplex = 1; | |
790 | break; | |
791 | case H_SPEED_1G_F: | |
792 | port->port_speed = EHEA_SPEED_1G; | |
793 | port->full_duplex = 1; | |
794 | break; | |
795 | case H_SPEED_10G_F: | |
796 | port->port_speed = EHEA_SPEED_10G; | |
797 | port->full_duplex = 1; | |
798 | break; | |
799 | default: | |
800 | port->port_speed = 0; | |
801 | port->full_duplex = 0; | |
802 | break; | |
803 | } | |
804 | } else { | |
805 | ehea_error("Failed sensing port speed"); | |
806 | ret = -EIO; | |
807 | } | |
808 | } else { | |
809 | if (hret == H_AUTHORITY) { | |
7674a588 | 810 | ehea_info("Hypervisor denied setting port speed"); |
7a291083 JBT |
811 | ret = -EPERM; |
812 | } else { | |
813 | ret = -EIO; | |
814 | ehea_error("Failed setting port speed"); | |
815 | } | |
816 | } | |
817 | netif_carrier_on(port->netdev); | |
818 | kfree(cb4); | |
819 | out: | |
820 | return ret; | |
821 | } | |
822 | ||
823 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
824 | { | |
825 | int ret; | |
826 | u8 ec; | |
827 | u8 portnum; | |
828 | struct ehea_port *port; | |
829 | ||
830 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
831 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
832 | port = ehea_get_port(adapter, portnum); | |
833 | ||
834 | switch (ec) { | |
835 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
836 | ||
837 | if (!port) { | |
838 | ehea_error("unknown portnum %x", portnum); | |
839 | break; | |
840 | } | |
841 | ||
842 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
843 | if (!netif_carrier_ok(port->netdev)) { | |
1e1675cc | 844 | ret = ehea_sense_port_attr(port); |
7a291083 JBT |
845 | if (ret) { |
846 | ehea_error("failed resensing port " | |
847 | "attributes"); | |
848 | break; | |
849 | } | |
850 | ||
851 | if (netif_msg_link(port)) | |
852 | ehea_info("%s: Logical port up: %dMbps " | |
853 | "%s Duplex", | |
854 | port->netdev->name, | |
855 | port->port_speed, | |
856 | port->full_duplex == | |
857 | 1 ? "Full" : "Half"); | |
858 | ||
859 | netif_carrier_on(port->netdev); | |
860 | netif_wake_queue(port->netdev); | |
861 | } | |
862 | } else | |
863 | if (netif_carrier_ok(port->netdev)) { | |
864 | if (netif_msg_link(port)) | |
865 | ehea_info("%s: Logical port down", | |
866 | port->netdev->name); | |
867 | netif_carrier_off(port->netdev); | |
868 | netif_stop_queue(port->netdev); | |
869 | } | |
870 | ||
871 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
872 | if (netif_msg_link(port)) | |
873 | ehea_info("%s: Physical port up", | |
874 | port->netdev->name); | |
875 | } else { | |
876 | if (netif_msg_link(port)) | |
877 | ehea_info("%s: Physical port down", | |
878 | port->netdev->name); | |
879 | } | |
880 | ||
881 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
882 | ehea_info("External switch port is primary port"); | |
883 | else | |
884 | ehea_info("External switch port is backup port"); | |
885 | ||
886 | break; | |
887 | case EHEA_EC_ADAPTER_MALFUNC: | |
888 | ehea_error("Adapter malfunction"); | |
889 | break; | |
890 | case EHEA_EC_PORT_MALFUNC: | |
891 | ehea_info("Port malfunction: Device: %s", port->netdev->name); | |
892 | netif_carrier_off(port->netdev); | |
893 | netif_stop_queue(port->netdev); | |
894 | break; | |
895 | default: | |
bff0a55f | 896 | ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe); |
7a291083 JBT |
897 | break; |
898 | } | |
899 | } | |
900 | ||
901 | static void ehea_neq_tasklet(unsigned long data) | |
902 | { | |
903 | struct ehea_adapter *adapter = (struct ehea_adapter*)data; | |
904 | struct ehea_eqe *eqe; | |
905 | u64 event_mask; | |
906 | ||
907 | eqe = ehea_poll_eq(adapter->neq); | |
908 | ehea_debug("eqe=%p", eqe); | |
909 | ||
910 | while (eqe) { | |
911 | ehea_debug("*eqe=%lx", eqe->entry); | |
912 | ehea_parse_eqe(adapter, eqe->entry); | |
913 | eqe = ehea_poll_eq(adapter->neq); | |
914 | ehea_debug("next eqe=%p", eqe); | |
915 | } | |
916 | ||
917 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
918 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
919 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
920 | ||
921 | ehea_h_reset_events(adapter->handle, | |
922 | adapter->neq->fw_handle, event_mask); | |
923 | } | |
924 | ||
7d12e780 | 925 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
926 | { |
927 | struct ehea_adapter *adapter = param; | |
928 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
929 | return IRQ_HANDLED; | |
930 | } | |
931 | ||
932 | ||
933 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
934 | { | |
935 | int ret; | |
936 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
937 | ||
938 | ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 | |
939 | - init_attr->act_nr_rwqes_rq2 | |
940 | - init_attr->act_nr_rwqes_rq3 - 1); | |
941 | ||
942 | ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); | |
943 | ||
944 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
945 | ||
946 | return ret; | |
947 | } | |
948 | ||
949 | static int ehea_reg_interrupts(struct net_device *dev) | |
950 | { | |
951 | struct ehea_port *port = netdev_priv(dev); | |
952 | struct ehea_port_res *pr; | |
953 | int i, ret; | |
954 | ||
7a291083 JBT |
955 | |
956 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
957 | dev->name); | |
958 | ||
959 | ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1, | |
960 | ehea_qp_aff_irq_handler, | |
38515e90 | 961 | IRQF_DISABLED, port->int_aff_name, port); |
7a291083 JBT |
962 | if (ret) { |
963 | ehea_error("failed registering irq for qp_aff_irq_handler:" | |
964 | "ist=%X", port->qp_eq->attr.ist1); | |
965 | goto out_free_qpeq; | |
966 | } | |
967 | ||
968 | if (netif_msg_ifup(port)) | |
969 | ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " | |
970 | "registered", port->qp_eq->attr.ist1); | |
971 | ||
18604c54 | 972 | |
7a291083 JBT |
973 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
974 | pr = &port->port_res[i]; | |
975 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 JBT |
976 | "%s-queue%d", dev->name, i); |
977 | ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1, | |
978 | ehea_recv_irq_handler, | |
38515e90 | 979 | IRQF_DISABLED, pr->int_send_name, |
7a291083 JBT |
980 | pr); |
981 | if (ret) { | |
18604c54 | 982 | ehea_error("failed registering irq for ehea_queue " |
7a291083 | 983 | "port_res_nr:%d, ist=%X", i, |
18604c54 | 984 | pr->eq->attr.ist1); |
7a291083 JBT |
985 | goto out_free_req; |
986 | } | |
987 | if (netif_msg_ifup(port)) | |
18604c54 JBT |
988 | ehea_info("irq_handle 0x%X for function ehea_queue_int " |
989 | "%d registered", pr->eq->attr.ist1, i); | |
7a291083 JBT |
990 | } |
991 | out: | |
992 | return ret; | |
993 | ||
18604c54 | 994 | |
7a291083 JBT |
995 | out_free_req: |
996 | while (--i >= 0) { | |
18604c54 | 997 | u32 ist = port->port_res[i].eq->attr.ist1; |
7a291083 JBT |
998 | ibmebus_free_irq(NULL, ist, &port->port_res[i]); |
999 | } | |
18604c54 | 1000 | |
7a291083 JBT |
1001 | out_free_qpeq: |
1002 | ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port); | |
1003 | i = port->num_def_qps; | |
18604c54 | 1004 | |
7a291083 | 1005 | goto out; |
18604c54 | 1006 | |
7a291083 JBT |
1007 | } |
1008 | ||
1009 | static void ehea_free_interrupts(struct net_device *dev) | |
1010 | { | |
1011 | struct ehea_port *port = netdev_priv(dev); | |
1012 | struct ehea_port_res *pr; | |
1013 | int i; | |
1014 | ||
1015 | /* send */ | |
18604c54 | 1016 | |
7a291083 JBT |
1017 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1018 | pr = &port->port_res[i]; | |
18604c54 | 1019 | ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr); |
7a291083 JBT |
1020 | if (netif_msg_intr(port)) |
1021 | ehea_info("free send irq for res %d with handle 0x%X", | |
18604c54 | 1022 | i, pr->eq->attr.ist1); |
7a291083 JBT |
1023 | } |
1024 | ||
1025 | /* associated events */ | |
1026 | ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port); | |
1027 | if (netif_msg_intr(port)) | |
1028 | ehea_info("associated event interrupt for handle 0x%X freed", | |
1029 | port->qp_eq->attr.ist1); | |
1030 | } | |
1031 | ||
1032 | static int ehea_configure_port(struct ehea_port *port) | |
1033 | { | |
1034 | int ret, i; | |
1035 | u64 hret, mask; | |
1036 | struct hcp_ehea_port_cb0 *cb0; | |
1037 | ||
1038 | ret = -ENOMEM; | |
a1d261c5 | 1039 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1040 | if (!cb0) |
1041 | goto out; | |
1042 | ||
1043 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1044 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1045 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1046 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1047 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1048 | PXLY_RC_VLAN_FILTER) | |
1049 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1050 | ||
18604c54 JBT |
1051 | for (i = 0; i < port->num_mcs; i++) |
1052 | if (use_mcs) | |
1053 | cb0->default_qpn_arr[i] = | |
1054 | port->port_res[i].qp->init_attr.qp_nr; | |
1055 | else | |
1056 | cb0->default_qpn_arr[i] = | |
1057 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1058 | |
7a291083 JBT |
1059 | if (netif_msg_ifup(port)) |
1060 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1061 | ||
1062 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1063 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1064 | ||
1065 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1066 | port->logical_port_id, | |
1067 | H_PORT_CB0, mask, cb0); | |
1068 | ret = -EIO; | |
1069 | if (hret != H_SUCCESS) | |
1070 | goto out_free; | |
1071 | ||
1072 | ret = 0; | |
1073 | ||
1074 | out_free: | |
1075 | kfree(cb0); | |
1076 | out: | |
1077 | return ret; | |
1078 | } | |
1079 | ||
e542aa6b | 1080 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1081 | { |
e542aa6b | 1082 | int ret; |
7a291083 JBT |
1083 | struct ehea_adapter *adapter = pr->port->adapter; |
1084 | ||
e542aa6b JBT |
1085 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1086 | if (ret) | |
7a291083 JBT |
1087 | goto out; |
1088 | ||
e542aa6b JBT |
1089 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1090 | if (ret) | |
1091 | goto out_free; | |
7a291083 JBT |
1092 | |
1093 | return 0; | |
1094 | ||
e542aa6b JBT |
1095 | out_free: |
1096 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1097 | out: |
e542aa6b | 1098 | ehea_error("Generating SMRS failed\n"); |
7a291083 JBT |
1099 | return -EIO; |
1100 | } | |
1101 | ||
e542aa6b | 1102 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1103 | { |
e542aa6b JBT |
1104 | if ((ehea_rem_mr(&pr->send_mr)) |
1105 | || (ehea_rem_mr(&pr->recv_mr))) | |
1106 | return -EIO; | |
1107 | else | |
1108 | return 0; | |
7a291083 JBT |
1109 | } |
1110 | ||
1111 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1112 | { | |
1113 | int arr_size = sizeof(void*) * max_q_entries; | |
1114 | ||
1115 | q_skba->arr = vmalloc(arr_size); | |
1116 | if (!q_skba->arr) | |
1117 | return -ENOMEM; | |
1118 | ||
1119 | memset(q_skba->arr, 0, arr_size); | |
1120 | ||
1121 | q_skba->len = max_q_entries; | |
1122 | q_skba->index = 0; | |
1123 | q_skba->os_skbs = 0; | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1129 | struct port_res_cfg *pr_cfg, int queue_token) | |
1130 | { | |
1131 | struct ehea_adapter *adapter = port->adapter; | |
1132 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1133 | struct ehea_qp_init_attr *init_attr = NULL; | |
1134 | int ret = -EIO; | |
1135 | ||
1136 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1137 | ||
1138 | pr->port = port; | |
7a291083 JBT |
1139 | spin_lock_init(&pr->xmit_lock); |
1140 | spin_lock_init(&pr->netif_queue); | |
1141 | ||
18604c54 JBT |
1142 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1143 | if (!pr->eq) { | |
1144 | ehea_error("create_eq failed (eq)"); | |
7a291083 JBT |
1145 | goto out_free; |
1146 | } | |
1147 | ||
1148 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1149 | pr->eq->fw_handle, |
7a291083 JBT |
1150 | port->logical_port_id); |
1151 | if (!pr->recv_cq) { | |
1152 | ehea_error("create_cq failed (cq_recv)"); | |
1153 | goto out_free; | |
1154 | } | |
1155 | ||
1156 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1157 | pr->eq->fw_handle, |
7a291083 JBT |
1158 | port->logical_port_id); |
1159 | if (!pr->send_cq) { | |
1160 | ehea_error("create_cq failed (cq_send)"); | |
1161 | goto out_free; | |
1162 | } | |
1163 | ||
1164 | if (netif_msg_ifup(port)) | |
1165 | ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", | |
1166 | pr->send_cq->attr.act_nr_of_cqes, | |
1167 | pr->recv_cq->attr.act_nr_of_cqes); | |
1168 | ||
1169 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1170 | if (!init_attr) { | |
1171 | ret = -ENOMEM; | |
1172 | ehea_error("no mem for ehea_qp_init_attr"); | |
1173 | goto out_free; | |
1174 | } | |
1175 | ||
1176 | init_attr->low_lat_rq1 = 1; | |
1177 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1178 | init_attr->rq_count = 3; | |
1179 | init_attr->qp_token = queue_token; | |
1180 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1181 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1182 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1183 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1184 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1185 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1186 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1187 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1188 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1189 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1190 | init_attr->port_nr = port->logical_port_id; | |
1191 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1192 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1193 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1194 | ||
1195 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1196 | if (!pr->qp) { | |
1197 | ehea_error("create_qp failed"); | |
1198 | ret = -EIO; | |
1199 | goto out_free; | |
1200 | } | |
1201 | ||
1202 | if (netif_msg_ifup(port)) | |
1203 | ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " | |
1204 | "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, | |
1205 | init_attr->act_nr_send_wqes, | |
1206 | init_attr->act_nr_rwqes_rq1, | |
1207 | init_attr->act_nr_rwqes_rq2, | |
1208 | init_attr->act_nr_rwqes_rq3); | |
1209 | ||
1210 | ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); | |
1211 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); | |
1212 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1213 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1214 | if (ret) | |
1215 | goto out_free; | |
1216 | ||
1217 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1218 | if (ehea_gen_smrs(pr) != 0) { | |
1219 | ret = -EIO; | |
1220 | goto out_free; | |
1221 | } | |
18604c54 | 1222 | |
7a291083 JBT |
1223 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1224 | ||
1225 | kfree(init_attr); | |
18604c54 JBT |
1226 | |
1227 | pr->d_netdev = alloc_netdev(0, "", ether_setup); | |
1228 | if (!pr->d_netdev) | |
1229 | goto out_free; | |
1230 | pr->d_netdev->priv = pr; | |
1231 | pr->d_netdev->weight = 64; | |
1232 | pr->d_netdev->poll = ehea_poll; | |
1233 | set_bit(__LINK_STATE_START, &pr->d_netdev->state); | |
1234 | strcpy(pr->d_netdev->name, port->netdev->name); | |
1235 | ||
7a291083 JBT |
1236 | ret = 0; |
1237 | goto out; | |
1238 | ||
1239 | out_free: | |
1240 | kfree(init_attr); | |
1241 | vfree(pr->sq_skba.arr); | |
1242 | vfree(pr->rq1_skba.arr); | |
1243 | vfree(pr->rq2_skba.arr); | |
1244 | vfree(pr->rq3_skba.arr); | |
1245 | ehea_destroy_qp(pr->qp); | |
1246 | ehea_destroy_cq(pr->send_cq); | |
1247 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1248 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1249 | out: |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1254 | { | |
1255 | int ret, i; | |
1256 | ||
18604c54 JBT |
1257 | free_netdev(pr->d_netdev); |
1258 | ||
7a291083 JBT |
1259 | ret = ehea_destroy_qp(pr->qp); |
1260 | ||
1261 | if (!ret) { | |
1262 | ehea_destroy_cq(pr->send_cq); | |
1263 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1264 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1265 | |
1266 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1267 | if (pr->rq1_skba.arr[i]) | |
1268 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1269 | ||
1270 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1271 | if (pr->rq2_skba.arr[i]) | |
1272 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1273 | ||
1274 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1275 | if (pr->rq3_skba.arr[i]) | |
1276 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1277 | ||
1278 | for (i = 0; i < pr->sq_skba.len; i++) | |
1279 | if (pr->sq_skba.arr[i]) | |
1280 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1281 | ||
1282 | vfree(pr->rq1_skba.arr); | |
1283 | vfree(pr->rq2_skba.arr); | |
1284 | vfree(pr->rq3_skba.arr); | |
1285 | vfree(pr->sq_skba.arr); | |
1286 | ret = ehea_rem_smrs(pr); | |
1287 | } | |
1288 | return ret; | |
1289 | } | |
1290 | ||
1291 | /* | |
1292 | * The write_* functions store information in swqe which is used by | |
1293 | * the hardware to calculate the ip/tcp/udp checksum | |
1294 | */ | |
1295 | ||
1296 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1297 | const struct sk_buff *skb) | |
1298 | { | |
eddc9ec5 | 1299 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1300 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1301 | } |
1302 | ||
1303 | static inline void write_tcp_offset_end(struct ehea_swqe *swqe, | |
1304 | const struct sk_buff *skb) | |
1305 | { | |
1306 | swqe->tcp_offset = | |
1307 | (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); | |
1308 | ||
1309 | swqe->tcp_end = (u16)skb->len - 1; | |
1310 | } | |
1311 | ||
1312 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1313 | const struct sk_buff *skb) | |
1314 | { | |
1315 | swqe->tcp_offset = | |
1316 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1317 | ||
1318 | swqe->tcp_end = (u16)skb->len - 1; | |
1319 | } | |
1320 | ||
1321 | ||
1322 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1323 | struct ehea_swqe *swqe, u32 lkey) | |
1324 | { | |
1325 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1326 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1327 | int skb_data_size = skb->len - skb->data_len; | |
1328 | int headersize; | |
7a291083 JBT |
1329 | |
1330 | /* Packet is TCP with TSO enabled */ | |
1331 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1332 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1333 | /* copy only eth/ip/tcp headers to immediate data and | |
1334 | * the rest of skb->data to sg1entry | |
1335 | */ | |
ab6a5bb6 | 1336 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 JBT |
1337 | |
1338 | skb_data_size = skb->len - skb->data_len; | |
1339 | ||
1340 | if (skb_data_size >= headersize) { | |
1341 | /* copy immediate data */ | |
d626f62b | 1342 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1343 | swqe->immediate_data_length = headersize; |
1344 | ||
1345 | if (skb_data_size > headersize) { | |
1346 | /* set sg1entry data */ | |
1347 | sg1entry->l_key = lkey; | |
1348 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1349 | sg1entry->vaddr = |
1350 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1351 | swqe->descriptors++; |
1352 | } | |
1353 | } else | |
1354 | ehea_error("cannot handle fragmented headers"); | |
1355 | } | |
1356 | ||
1357 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1358 | struct ehea_swqe *swqe, u32 lkey) | |
1359 | { | |
1360 | int skb_data_size = skb->len - skb->data_len; | |
1361 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1362 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1363 | |
1364 | /* Packet is any nonTSO type | |
1365 | * | |
1366 | * Copy as much as possible skb->data to immediate data and | |
1367 | * the rest to sg1entry | |
1368 | */ | |
1369 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1370 | /* copy immediate data */ | |
d626f62b | 1371 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1372 | |
1373 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1374 | ||
1375 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1376 | /* copy sg1entry data */ | |
1377 | sg1entry->l_key = lkey; | |
1378 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1379 | sg1entry->vaddr = |
1380 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1381 | swqe->descriptors++; |
1382 | } | |
1383 | } else { | |
d626f62b | 1384 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1385 | swqe->immediate_data_length = skb_data_size; |
1386 | } | |
1387 | } | |
1388 | ||
1389 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1390 | struct ehea_swqe *swqe, u32 lkey) | |
1391 | { | |
1392 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1393 | skb_frag_t *frag; | |
1394 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1395 | |
1396 | nfrags = skb_shinfo(skb)->nr_frags; | |
1397 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1398 | sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list; | |
1399 | swqe->descriptors = 0; | |
1400 | sg1entry_contains_frag_data = 0; | |
1401 | ||
1402 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1403 | write_swqe2_TSO(skb, swqe, lkey); | |
1404 | else | |
1405 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1406 | ||
1407 | /* write descriptors */ | |
1408 | if (nfrags > 0) { | |
1409 | if (swqe->descriptors == 0) { | |
1410 | /* sg1entry not yet used */ | |
1411 | frag = &skb_shinfo(skb)->frags[0]; | |
1412 | ||
1413 | /* copy sg1entry data */ | |
1414 | sg1entry->l_key = lkey; | |
1415 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1416 | sg1entry->vaddr = |
1417 | ehea_map_vaddr(page_address(frag->page) | |
1418 | + frag->page_offset); | |
7a291083 JBT |
1419 | swqe->descriptors++; |
1420 | sg1entry_contains_frag_data = 1; | |
1421 | } | |
1422 | ||
1423 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1424 | ||
1425 | frag = &skb_shinfo(skb)->frags[i]; | |
1426 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1427 | ||
1428 | sgentry->l_key = lkey; | |
1429 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1430 | sgentry->vaddr = |
1431 | ehea_map_vaddr(page_address(frag->page) | |
1432 | + frag->page_offset); | |
7a291083 JBT |
1433 | swqe->descriptors++; |
1434 | } | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1439 | { | |
1440 | int ret = 0; | |
1441 | u64 hret; | |
1442 | u8 reg_type; | |
1443 | ||
1444 | /* De/Register untagged packets */ | |
1445 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1446 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1447 | port->logical_port_id, | |
1448 | reg_type, port->mac_addr, 0, hcallid); | |
1449 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1450 | ehea_error("%sregistering bc address failed (tagged)", |
1451 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1452 | ret = -EIO; |
1453 | goto out_herr; | |
1454 | } | |
1455 | ||
1456 | /* De/Register VLAN packets */ | |
1457 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1458 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1459 | port->logical_port_id, | |
1460 | reg_type, port->mac_addr, 0, hcallid); | |
1461 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1462 | ehea_error("%sregistering bc address failed (vlan)", |
1463 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1464 | ret = -EIO; |
1465 | } | |
1466 | out_herr: | |
1467 | return ret; | |
1468 | } | |
1469 | ||
1470 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1471 | { | |
1472 | struct ehea_port *port = netdev_priv(dev); | |
1473 | struct sockaddr *mac_addr = sa; | |
1474 | struct hcp_ehea_port_cb0 *cb0; | |
1475 | int ret; | |
1476 | u64 hret; | |
1477 | ||
1478 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1479 | ret = -EADDRNOTAVAIL; | |
1480 | goto out; | |
1481 | } | |
1482 | ||
a1d261c5 | 1483 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1484 | if (!cb0) { |
1485 | ehea_error("no mem for cb0"); | |
1486 | ret = -ENOMEM; | |
1487 | goto out; | |
1488 | } | |
1489 | ||
1490 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1491 | ||
1492 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1493 | ||
1494 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1495 | port->logical_port_id, H_PORT_CB0, | |
1496 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1497 | if (hret != H_SUCCESS) { | |
1498 | ret = -EIO; | |
1499 | goto out_free; | |
1500 | } | |
1501 | ||
1502 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1503 | ||
1504 | /* Deregister old MAC in pHYP */ | |
1505 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1506 | if (ret) | |
1507 | goto out_free; | |
1508 | ||
1509 | port->mac_addr = cb0->port_mac_addr << 16; | |
1510 | ||
1511 | /* Register new MAC in pHYP */ | |
1512 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1513 | if (ret) | |
1514 | goto out_free; | |
1515 | ||
1516 | ret = 0; | |
1517 | out_free: | |
1518 | kfree(cb0); | |
1519 | out: | |
1520 | return ret; | |
1521 | } | |
1522 | ||
1523 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1524 | { | |
7674a588 TK |
1525 | if (hret == H_AUTHORITY) |
1526 | ehea_info("Hypervisor denied %sabling promiscuous mode", | |
1527 | enable == 1 ? "en" : "dis"); | |
1528 | else | |
1529 | ehea_error("failed %sabling promiscuous mode", | |
1530 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1531 | } |
1532 | ||
1533 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1534 | { | |
1535 | struct ehea_port *port = netdev_priv(dev); | |
1536 | struct hcp_ehea_port_cb7 *cb7; | |
1537 | u64 hret; | |
1538 | ||
1539 | if ((enable && port->promisc) || (!enable && !port->promisc)) | |
1540 | return; | |
1541 | ||
a1d261c5 | 1542 | cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
7a291083 JBT |
1543 | if (!cb7) { |
1544 | ehea_error("no mem for cb7"); | |
1545 | goto out; | |
1546 | } | |
1547 | ||
1548 | /* Modify Pxs_DUCQPN in CB7 */ | |
1549 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1550 | ||
1551 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1552 | port->logical_port_id, | |
1553 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1554 | if (hret) { | |
1555 | ehea_promiscuous_error(hret, enable); | |
1556 | goto out; | |
1557 | } | |
1558 | ||
1559 | port->promisc = enable; | |
1560 | out: | |
1561 | kfree(cb7); | |
1562 | return; | |
1563 | } | |
1564 | ||
1565 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1566 | u32 hcallid) | |
1567 | { | |
1568 | u64 hret; | |
1569 | u8 reg_type; | |
1570 | ||
1571 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1572 | | EHEA_BCMC_UNTAGGED; | |
1573 | ||
1574 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1575 | port->logical_port_id, | |
1576 | reg_type, mc_mac_addr, 0, hcallid); | |
1577 | if (hret) | |
1578 | goto out; | |
1579 | ||
1580 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1581 | | EHEA_BCMC_VLANID_ALL; | |
1582 | ||
1583 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1584 | port->logical_port_id, | |
1585 | reg_type, mc_mac_addr, 0, hcallid); | |
1586 | out: | |
1587 | return hret; | |
1588 | } | |
1589 | ||
1590 | static int ehea_drop_multicast_list(struct net_device *dev) | |
1591 | { | |
1592 | struct ehea_port *port = netdev_priv(dev); | |
1593 | struct ehea_mc_list *mc_entry = port->mc_list; | |
1594 | struct list_head *pos; | |
1595 | struct list_head *temp; | |
1596 | int ret = 0; | |
1597 | u64 hret; | |
1598 | ||
1599 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
1600 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
1601 | ||
1602 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
1603 | H_DEREG_BCMC); | |
1604 | if (hret) { | |
1605 | ehea_error("failed deregistering mcast MAC"); | |
1606 | ret = -EIO; | |
1607 | } | |
1608 | ||
1609 | list_del(pos); | |
1610 | kfree(mc_entry); | |
1611 | } | |
1612 | return ret; | |
1613 | } | |
1614 | ||
1615 | static void ehea_allmulti(struct net_device *dev, int enable) | |
1616 | { | |
1617 | struct ehea_port *port = netdev_priv(dev); | |
1618 | u64 hret; | |
1619 | ||
1620 | if (!port->allmulti) { | |
1621 | if (enable) { | |
1622 | /* Enable ALLMULTI */ | |
1623 | ehea_drop_multicast_list(dev); | |
1624 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
1625 | if (!hret) | |
1626 | port->allmulti = 1; | |
1627 | else | |
1628 | ehea_error("failed enabling IFF_ALLMULTI"); | |
1629 | } | |
1630 | } else | |
1631 | if (!enable) { | |
1632 | /* Disable ALLMULTI */ | |
1633 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
1634 | if (!hret) | |
1635 | port->allmulti = 0; | |
1636 | else | |
1637 | ehea_error("failed disabling IFF_ALLMULTI"); | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr) | |
1642 | { | |
1643 | struct ehea_mc_list *ehea_mcl_entry; | |
1644 | u64 hret; | |
1645 | ||
1e1675cc | 1646 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 JBT |
1647 | if (!ehea_mcl_entry) { |
1648 | ehea_error("no mem for mcl_entry"); | |
1649 | return; | |
1650 | } | |
1651 | ||
1652 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
1653 | ||
1654 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
1655 | ||
1656 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
1657 | H_REG_BCMC); | |
1658 | if (!hret) | |
1659 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
1660 | else { | |
1661 | ehea_error("failed registering mcast MAC"); | |
1662 | kfree(ehea_mcl_entry); | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | static void ehea_set_multicast_list(struct net_device *dev) | |
1667 | { | |
1668 | struct ehea_port *port = netdev_priv(dev); | |
1669 | struct dev_mc_list *k_mcl_entry; | |
1670 | int ret, i; | |
1671 | ||
1672 | if (dev->flags & IFF_PROMISC) { | |
1673 | ehea_promiscuous(dev, 1); | |
1674 | return; | |
1675 | } | |
1676 | ehea_promiscuous(dev, 0); | |
1677 | ||
1678 | if (dev->flags & IFF_ALLMULTI) { | |
1679 | ehea_allmulti(dev, 1); | |
1680 | return; | |
1681 | } | |
1682 | ehea_allmulti(dev, 0); | |
1683 | ||
1684 | if (dev->mc_count) { | |
1685 | ret = ehea_drop_multicast_list(dev); | |
1686 | if (ret) { | |
1687 | /* Dropping the current multicast list failed. | |
1688 | * Enabling ALL_MULTI is the best we can do. | |
1689 | */ | |
1690 | ehea_allmulti(dev, 1); | |
1691 | } | |
1692 | ||
1693 | if (dev->mc_count > port->adapter->max_mc_mac) { | |
1694 | ehea_info("Mcast registration limit reached (0x%lx). " | |
1695 | "Use ALLMULTI!", | |
1696 | port->adapter->max_mc_mac); | |
1697 | goto out; | |
1698 | } | |
1699 | ||
1700 | for (i = 0, k_mcl_entry = dev->mc_list; | |
1701 | i < dev->mc_count; | |
1702 | i++, k_mcl_entry = k_mcl_entry->next) { | |
1703 | ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); | |
1704 | } | |
1705 | } | |
1706 | out: | |
1707 | return; | |
1708 | } | |
1709 | ||
1710 | static int ehea_change_mtu(struct net_device *dev, int new_mtu) | |
1711 | { | |
1712 | if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) | |
1713 | return -EINVAL; | |
1714 | dev->mtu = new_mtu; | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
1719 | struct ehea_swqe *swqe, u32 lkey) | |
1720 | { | |
1721 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1722 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1723 | |
7a291083 JBT |
1724 | /* IPv4 */ |
1725 | swqe->tx_control |= EHEA_SWQE_CRC | |
1726 | | EHEA_SWQE_IP_CHECKSUM | |
1727 | | EHEA_SWQE_TCP_CHECKSUM | |
1728 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1729 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1730 | ||
1731 | write_ip_start_end(swqe, skb); | |
1732 | ||
eddc9ec5 | 1733 | if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1734 | if ((iph->frag_off & IP_MF) |
1735 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1736 | /* IP fragment, so don't change cs */ |
1737 | swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; | |
1738 | else | |
1739 | write_udp_offset_end(swqe, skb); | |
eddc9ec5 | 1740 | } else if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1741 | write_tcp_offset_end(swqe, skb); |
1742 | } | |
1743 | ||
1744 | /* icmp (big data) and ip segmentation packets (all other ip | |
1745 | packets) do not require any special handling */ | |
1746 | ||
1747 | } else { | |
1748 | /* Other Ethernet Protocol */ | |
1749 | swqe->tx_control |= EHEA_SWQE_CRC | |
1750 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1751 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1752 | } | |
1753 | ||
1754 | write_swqe2_data(skb, dev, swqe, lkey); | |
1755 | } | |
1756 | ||
1757 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
1758 | struct ehea_swqe *swqe) | |
1759 | { | |
1760 | int nfrags = skb_shinfo(skb)->nr_frags; | |
1761 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; | |
1762 | skb_frag_t *frag; | |
1763 | int i; | |
1764 | ||
1765 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1766 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1767 | |
7a291083 JBT |
1768 | /* IPv4 */ |
1769 | write_ip_start_end(swqe, skb); | |
1770 | ||
eddc9ec5 | 1771 | if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1772 | swqe->tx_control |= EHEA_SWQE_CRC |
1773 | | EHEA_SWQE_IP_CHECKSUM | |
1774 | | EHEA_SWQE_TCP_CHECKSUM | |
1775 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1776 | ||
1777 | write_tcp_offset_end(swqe, skb); | |
1778 | ||
eddc9ec5 | 1779 | } else if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1780 | if ((iph->frag_off & IP_MF) |
1781 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1782 | /* IP fragment, so don't change cs */ |
1783 | swqe->tx_control |= EHEA_SWQE_CRC | |
1784 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1785 | else { | |
1786 | swqe->tx_control |= EHEA_SWQE_CRC | |
1787 | | EHEA_SWQE_IP_CHECKSUM | |
1788 | | EHEA_SWQE_TCP_CHECKSUM | |
1789 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1790 | ||
1791 | write_udp_offset_end(swqe, skb); | |
1792 | } | |
1793 | } else { | |
1794 | /* icmp (big data) and | |
1795 | ip segmentation packets (all other ip packets) */ | |
1796 | swqe->tx_control |= EHEA_SWQE_CRC | |
1797 | | EHEA_SWQE_IP_CHECKSUM | |
1798 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1799 | } | |
1800 | } else { | |
1801 | /* Other Ethernet Protocol */ | |
1802 | swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; | |
1803 | } | |
1804 | /* copy (immediate) data */ | |
1805 | if (nfrags == 0) { | |
1806 | /* data is in a single piece */ | |
d626f62b | 1807 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
7a291083 JBT |
1808 | } else { |
1809 | /* first copy data from the skb->data buffer ... */ | |
d626f62b ACM |
1810 | skb_copy_from_linear_data(skb, imm_data, |
1811 | skb->len - skb->data_len); | |
7a291083 JBT |
1812 | imm_data += skb->len - skb->data_len; |
1813 | ||
1814 | /* ... then copy data from the fragments */ | |
1815 | for (i = 0; i < nfrags; i++) { | |
1816 | frag = &skb_shinfo(skb)->frags[i]; | |
1817 | memcpy(imm_data, | |
1818 | page_address(frag->page) + frag->page_offset, | |
1819 | frag->size); | |
1820 | imm_data += frag->size; | |
1821 | } | |
1822 | } | |
1823 | swqe->immediate_data_length = skb->len; | |
1824 | dev_kfree_skb(skb); | |
1825 | } | |
1826 | ||
18604c54 JBT |
1827 | static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
1828 | { | |
1829 | struct tcphdr *tcp; | |
1830 | u32 tmp; | |
1831 | ||
1832 | if ((skb->protocol == htons(ETH_P_IP)) && | |
88ca2d07 TK |
1833 | (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
1834 | tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4)); | |
18604c54 | 1835 | tmp = (tcp->source + (tcp->dest << 16)) % 31; |
88ca2d07 | 1836 | tmp += ip_hdr(skb)->daddr % 31; |
18604c54 JBT |
1837 | return tmp % num_qps; |
1838 | } | |
1839 | else | |
1840 | return 0; | |
1841 | } | |
1842 | ||
7a291083 JBT |
1843 | static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1844 | { | |
1845 | struct ehea_port *port = netdev_priv(dev); | |
1846 | struct ehea_swqe *swqe; | |
1847 | unsigned long flags; | |
1848 | u32 lkey; | |
1849 | int swqe_index; | |
18604c54 JBT |
1850 | struct ehea_port_res *pr; |
1851 | ||
1852 | pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; | |
1853 | ||
18604c54 JBT |
1854 | if (!spin_trylock(&pr->xmit_lock)) |
1855 | return NETDEV_TX_BUSY; | |
1856 | ||
1857 | if (pr->queue_stopped) { | |
1858 | spin_unlock(&pr->xmit_lock); | |
1859 | return NETDEV_TX_BUSY; | |
1860 | } | |
7a291083 JBT |
1861 | |
1862 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
1863 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
1864 | atomic_dec(&pr->swqe_avail); | |
1865 | ||
1866 | if (skb->len <= SWQE3_MAX_IMM) { | |
1867 | u32 sig_iv = port->sig_comp_iv; | |
1868 | u32 swqe_num = pr->swqe_id_counter; | |
1869 | ehea_xmit3(skb, dev, swqe); | |
1870 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
1871 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
1872 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
1873 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
1874 | sig_iv); | |
1875 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
1876 | pr->swqe_ll_count = 0; | |
1877 | } else | |
1878 | pr->swqe_ll_count += 1; | |
1879 | } else { | |
1880 | swqe->wr_id = | |
1881 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
1882 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 1883 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
1884 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
1885 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
1886 | ||
1887 | pr->sq_skba.index++; | |
1888 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
1889 | ||
1890 | lkey = pr->send_mr.lkey; | |
1891 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 1892 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
1893 | } |
1894 | pr->swqe_id_counter += 1; | |
1895 | ||
1896 | if (port->vgrp && vlan_tx_tag_present(skb)) { | |
1897 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; | |
1898 | swqe->vlan_tag = vlan_tx_tag_get(skb); | |
1899 | } | |
1900 | ||
1901 | if (netif_msg_tx_queued(port)) { | |
1902 | ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); | |
bff0a55f | 1903 | ehea_dump(swqe, 512, "swqe"); |
7a291083 JBT |
1904 | } |
1905 | ||
44c82152 TK |
1906 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) |
1907 | goto out; | |
1908 | ||
7a291083 JBT |
1909 | ehea_post_swqe(pr->qp, swqe); |
1910 | pr->tx_packets++; | |
1911 | ||
1912 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
1913 | spin_lock_irqsave(&pr->netif_queue, flags); | |
1914 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
acbddb59 | 1915 | pr->p_stats.queue_stopped++; |
7a291083 JBT |
1916 | netif_stop_queue(dev); |
1917 | pr->queue_stopped = 1; | |
1918 | } | |
1919 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
1920 | } | |
1921 | dev->trans_start = jiffies; | |
1922 | spin_unlock(&pr->xmit_lock); | |
44c82152 | 1923 | out: |
7a291083 JBT |
1924 | return NETDEV_TX_OK; |
1925 | } | |
1926 | ||
1927 | static void ehea_vlan_rx_register(struct net_device *dev, | |
1928 | struct vlan_group *grp) | |
1929 | { | |
1930 | struct ehea_port *port = netdev_priv(dev); | |
1931 | struct ehea_adapter *adapter = port->adapter; | |
1932 | struct hcp_ehea_port_cb1 *cb1; | |
1933 | u64 hret; | |
1934 | ||
1935 | port->vgrp = grp; | |
1936 | ||
a1d261c5 | 1937 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1938 | if (!cb1) { |
1939 | ehea_error("no mem for cb1"); | |
1940 | goto out; | |
1941 | } | |
1942 | ||
dec590c1 | 1943 | memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); |
7a291083 JBT |
1944 | |
1945 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
1946 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
1947 | if (hret != H_SUCCESS) | |
1948 | ehea_error("modify_ehea_port failed"); | |
1949 | ||
1950 | kfree(cb1); | |
1951 | out: | |
1952 | return; | |
1953 | } | |
1954 | ||
1955 | static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
1956 | { | |
1957 | struct ehea_port *port = netdev_priv(dev); | |
1958 | struct ehea_adapter *adapter = port->adapter; | |
1959 | struct hcp_ehea_port_cb1 *cb1; | |
1960 | int index; | |
1961 | u64 hret; | |
1962 | ||
a1d261c5 | 1963 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1964 | if (!cb1) { |
1965 | ehea_error("no mem for cb1"); | |
1966 | goto out; | |
1967 | } | |
1968 | ||
1969 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
1970 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
1971 | if (hret != H_SUCCESS) { | |
1972 | ehea_error("query_ehea_port failed"); | |
1973 | goto out; | |
1974 | } | |
1975 | ||
1976 | index = (vid / 64); | |
dec590c1 | 1977 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
1978 | |
1979 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
1980 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
1981 | if (hret != H_SUCCESS) | |
1982 | ehea_error("modify_ehea_port failed"); | |
1983 | out: | |
1984 | kfree(cb1); | |
1985 | return; | |
1986 | } | |
1987 | ||
1988 | static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
1989 | { | |
1990 | struct ehea_port *port = netdev_priv(dev); | |
1991 | struct ehea_adapter *adapter = port->adapter; | |
1992 | struct hcp_ehea_port_cb1 *cb1; | |
1993 | int index; | |
1994 | u64 hret; | |
1995 | ||
5c15bdec | 1996 | vlan_group_set_device(port->vgrp, vid, NULL); |
7a291083 | 1997 | |
a1d261c5 | 1998 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1999 | if (!cb1) { |
2000 | ehea_error("no mem for cb1"); | |
2001 | goto out; | |
2002 | } | |
2003 | ||
2004 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2005 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2006 | if (hret != H_SUCCESS) { | |
2007 | ehea_error("query_ehea_port failed"); | |
2008 | goto out; | |
2009 | } | |
2010 | ||
2011 | index = (vid / 64); | |
dec590c1 | 2012 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2013 | |
2014 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2015 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2016 | if (hret != H_SUCCESS) | |
2017 | ehea_error("modify_ehea_port failed"); | |
2018 | out: | |
2019 | kfree(cb1); | |
2020 | return; | |
2021 | } | |
2022 | ||
2023 | int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) | |
2024 | { | |
2025 | int ret = -EIO; | |
2026 | u64 hret; | |
2027 | u16 dummy16 = 0; | |
2028 | u64 dummy64 = 0; | |
2029 | struct hcp_modify_qp_cb0* cb0; | |
2030 | ||
a1d261c5 | 2031 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2032 | if (!cb0) { |
2033 | ret = -ENOMEM; | |
2034 | goto out; | |
2035 | } | |
2036 | ||
2037 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2038 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2039 | if (hret != H_SUCCESS) { | |
2040 | ehea_error("query_ehea_qp failed (1)"); | |
2041 | goto out; | |
2042 | } | |
2043 | ||
2044 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2045 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2046 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2047 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2048 | if (hret != H_SUCCESS) { | |
2049 | ehea_error("modify_ehea_qp failed (1)"); | |
2050 | goto out; | |
2051 | } | |
2052 | ||
2053 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2054 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2055 | if (hret != H_SUCCESS) { | |
2056 | ehea_error("query_ehea_qp failed (2)"); | |
2057 | goto out; | |
2058 | } | |
2059 | ||
2060 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2061 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2062 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2063 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2064 | if (hret != H_SUCCESS) { | |
2065 | ehea_error("modify_ehea_qp failed (2)"); | |
2066 | goto out; | |
2067 | } | |
2068 | ||
2069 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2070 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2071 | if (hret != H_SUCCESS) { | |
2072 | ehea_error("query_ehea_qp failed (3)"); | |
2073 | goto out; | |
2074 | } | |
2075 | ||
2076 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2077 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2078 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2079 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2080 | if (hret != H_SUCCESS) { | |
2081 | ehea_error("modify_ehea_qp failed (3)"); | |
2082 | goto out; | |
2083 | } | |
2084 | ||
2085 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2086 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2087 | if (hret != H_SUCCESS) { | |
2088 | ehea_error("query_ehea_qp failed (4)"); | |
2089 | goto out; | |
2090 | } | |
2091 | ||
2092 | ret = 0; | |
2093 | out: | |
2094 | kfree(cb0); | |
2095 | return ret; | |
2096 | } | |
2097 | ||
2098 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps, | |
2099 | int add_tx_qps) | |
2100 | { | |
2101 | int ret, i; | |
2102 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2103 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2104 | ||
2105 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2106 | EHEA_MAX_ENTRIES_EQ, 1); | |
2107 | if (!port->qp_eq) { | |
2108 | ret = -EINVAL; | |
2109 | ehea_error("ehea_create_eq failed (qp_eq)"); | |
2110 | goto out_kill_eq; | |
2111 | } | |
2112 | ||
2113 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2114 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2115 | pr_cfg.max_entries_sq = sq_entries; |
2116 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2117 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2118 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2119 | ||
2120 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2121 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2122 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2123 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2124 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2125 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2126 | ||
2127 | for (i = 0; i < def_qps; i++) { | |
2128 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2129 | if (ret) | |
2130 | goto out_clean_pr; | |
2131 | } | |
2132 | for (i = def_qps; i < def_qps + add_tx_qps; i++) { | |
2133 | ret = ehea_init_port_res(port, &port->port_res[i], | |
2134 | &pr_cfg_small_rx, i); | |
2135 | if (ret) | |
2136 | goto out_clean_pr; | |
2137 | } | |
2138 | ||
2139 | return 0; | |
2140 | ||
2141 | out_clean_pr: | |
2142 | while (--i >= 0) | |
2143 | ehea_clean_portres(port, &port->port_res[i]); | |
2144 | ||
2145 | out_kill_eq: | |
2146 | ehea_destroy_eq(port->qp_eq); | |
2147 | return ret; | |
2148 | } | |
2149 | ||
2150 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2151 | { | |
2152 | int ret = 0; | |
2153 | int i; | |
2154 | ||
2155 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) | |
2156 | ret |= ehea_clean_portres(port, &port->port_res[i]); | |
2157 | ||
2158 | ret |= ehea_destroy_eq(port->qp_eq); | |
2159 | ||
2160 | return ret; | |
2161 | } | |
2162 | ||
35cf2e2e | 2163 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2164 | { |
35cf2e2e TK |
2165 | if (adapter->active_ports) |
2166 | return; | |
1211bb6d TK |
2167 | |
2168 | ehea_rem_mr(&adapter->mr); | |
2169 | } | |
2170 | ||
35cf2e2e | 2171 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2172 | { |
35cf2e2e TK |
2173 | if (adapter->active_ports) |
2174 | return 0; | |
1211bb6d TK |
2175 | |
2176 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2177 | } | |
2178 | ||
7a291083 JBT |
2179 | static int ehea_up(struct net_device *dev) |
2180 | { | |
2181 | int ret, i; | |
2182 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2183 | |
2184 | if (port->state == EHEA_PORT_UP) | |
2185 | return 0; | |
2186 | ||
2187 | ret = ehea_port_res_setup(port, port->num_def_qps, | |
2188 | port->num_add_tx_qps); | |
2189 | if (ret) { | |
2190 | ehea_error("port_res_failed"); | |
2191 | goto out; | |
2192 | } | |
2193 | ||
2194 | /* Set default QP for this port */ | |
2195 | ret = ehea_configure_port(port); | |
2196 | if (ret) { | |
2197 | ehea_error("ehea_configure_port failed. ret:%d", ret); | |
2198 | goto out_clean_pr; | |
2199 | } | |
2200 | ||
7a291083 JBT |
2201 | ret = ehea_reg_interrupts(dev); |
2202 | if (ret) { | |
f9e29228 TK |
2203 | ehea_error("reg_interrupts failed. ret:%d", ret); |
2204 | goto out_clean_pr; | |
7a291083 JBT |
2205 | } |
2206 | ||
2207 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
2208 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); | |
2209 | if (ret) { | |
2210 | ehea_error("activate_qp failed"); | |
2211 | goto out_free_irqs; | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | for(i = 0; i < port->num_def_qps; i++) { | |
2216 | ret = ehea_fill_port_res(&port->port_res[i]); | |
2217 | if (ret) { | |
2218 | ehea_error("out_free_irqs"); | |
2219 | goto out_free_irqs; | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | ret = 0; | |
2224 | port->state = EHEA_PORT_UP; | |
2225 | goto out; | |
2226 | ||
2227 | out_free_irqs: | |
2228 | ehea_free_interrupts(dev); | |
2229 | ||
7a291083 JBT |
2230 | out_clean_pr: |
2231 | ehea_clean_all_portres(port); | |
2232 | out: | |
44c82152 TK |
2233 | if (ret) |
2234 | ehea_info("Failed starting %s. ret=%i", dev->name, ret); | |
2235 | ||
7a291083 JBT |
2236 | return ret; |
2237 | } | |
2238 | ||
2239 | static int ehea_open(struct net_device *dev) | |
2240 | { | |
2241 | int ret; | |
2242 | struct ehea_port *port = netdev_priv(dev); | |
2243 | ||
2244 | down(&port->port_lock); | |
2245 | ||
2246 | if (netif_msg_ifup(port)) | |
2247 | ehea_info("enabling port %s", dev->name); | |
2248 | ||
2249 | ret = ehea_up(dev); | |
2250 | if (!ret) | |
2251 | netif_start_queue(dev); | |
2252 | ||
2253 | up(&port->port_lock); | |
2254 | ||
2255 | return ret; | |
2256 | } | |
2257 | ||
2258 | static int ehea_down(struct net_device *dev) | |
2259 | { | |
2260 | int ret, i; | |
2261 | struct ehea_port *port = netdev_priv(dev); | |
2262 | ||
2263 | if (port->state == EHEA_PORT_DOWN) | |
2264 | return 0; | |
2265 | ||
2266 | ehea_drop_multicast_list(dev); | |
2267 | ehea_free_interrupts(dev); | |
2268 | ||
18604c54 | 2269 | for (i = 0; i < port->num_def_qps; i++) |
e542aa6b | 2270 | while (test_bit(__LINK_STATE_RX_SCHED, |
18604c54 JBT |
2271 | &port->port_res[i].d_netdev->state)) |
2272 | msleep(1); | |
7a291083 | 2273 | |
7a291083 | 2274 | port->state = EHEA_PORT_DOWN; |
44c82152 TK |
2275 | |
2276 | ret = ehea_clean_all_portres(port); | |
2277 | if (ret) | |
2278 | ehea_info("Failed freeing resources for %s. ret=%i", | |
2279 | dev->name, ret); | |
2280 | ||
7a291083 JBT |
2281 | return ret; |
2282 | } | |
2283 | ||
2284 | static int ehea_stop(struct net_device *dev) | |
2285 | { | |
2286 | int ret; | |
2287 | struct ehea_port *port = netdev_priv(dev); | |
2288 | ||
2289 | if (netif_msg_ifdown(port)) | |
2290 | ehea_info("disabling port %s", dev->name); | |
2291 | ||
2292 | flush_workqueue(port->adapter->ehea_wq); | |
2293 | down(&port->port_lock); | |
2294 | netif_stop_queue(dev); | |
2295 | ret = ehea_down(dev); | |
2296 | up(&port->port_lock); | |
2297 | return ret; | |
2298 | } | |
2299 | ||
c4028958 | 2300 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2301 | { |
2302 | int ret; | |
c4028958 DH |
2303 | struct ehea_port *port = |
2304 | container_of(work, struct ehea_port, reset_task); | |
2305 | struct net_device *dev = port->netdev; | |
7a291083 JBT |
2306 | |
2307 | port->resets++; | |
2308 | down(&port->port_lock); | |
2309 | netif_stop_queue(dev); | |
2310 | netif_poll_disable(dev); | |
2311 | ||
44c82152 | 2312 | ehea_down(dev); |
7a291083 JBT |
2313 | |
2314 | ret = ehea_up(dev); | |
44c82152 | 2315 | if (ret) |
7a291083 | 2316 | goto out; |
7a291083 JBT |
2317 | |
2318 | if (netif_msg_timer(port)) | |
2319 | ehea_info("Device %s resetted successfully", dev->name); | |
2320 | ||
2321 | netif_poll_enable(dev); | |
2322 | netif_wake_queue(dev); | |
2323 | out: | |
2324 | up(&port->port_lock); | |
2325 | return; | |
2326 | } | |
2327 | ||
44c82152 TK |
2328 | static void ehea_rereg_mrs(struct work_struct *work) |
2329 | { | |
2330 | int ret, i; | |
2331 | struct ehea_adapter *adapter; | |
2332 | ||
2333 | ehea_info("LPAR memory enlarged - re-initializing driver"); | |
2334 | ||
2335 | list_for_each_entry(adapter, &adapter_list, list) | |
2336 | if (adapter->active_ports) { | |
2337 | /* Shutdown all ports */ | |
2338 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2339 | struct ehea_port *port = adapter->port[i]; | |
2340 | ||
2341 | if (port) { | |
2342 | struct net_device *dev = port->netdev; | |
2343 | ||
2344 | if (dev->flags & IFF_UP) { | |
2345 | ehea_info("stopping %s", | |
2346 | dev->name); | |
2347 | down(&port->port_lock); | |
2348 | netif_stop_queue(dev); | |
2349 | netif_poll_disable(dev); | |
2350 | ehea_down(dev); | |
2351 | up(&port->port_lock); | |
2352 | } | |
2353 | } | |
2354 | } | |
2355 | ||
2356 | /* Unregister old memory region */ | |
2357 | ret = ehea_rem_mr(&adapter->mr); | |
2358 | if (ret) { | |
2359 | ehea_error("unregister MR failed - driver" | |
2360 | " inoperable!"); | |
2361 | goto out; | |
2362 | } | |
2363 | } | |
2364 | ||
2365 | ehea_destroy_busmap(); | |
2366 | ||
2367 | ret = ehea_create_busmap(); | |
2368 | if (ret) | |
2369 | goto out; | |
2370 | ||
2371 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
2372 | ||
2373 | list_for_each_entry(adapter, &adapter_list, list) | |
2374 | if (adapter->active_ports) { | |
2375 | /* Register new memory region */ | |
2376 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2377 | if (ret) { | |
2378 | ehea_error("register MR failed - driver" | |
2379 | " inoperable!"); | |
2380 | goto out; | |
2381 | } | |
2382 | ||
2383 | /* Restart all ports */ | |
2384 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2385 | struct ehea_port *port = adapter->port[i]; | |
2386 | ||
2387 | if (port) { | |
2388 | struct net_device *dev = port->netdev; | |
2389 | ||
2390 | if (dev->flags & IFF_UP) { | |
2391 | ehea_info("restarting %s", | |
2392 | dev->name); | |
2393 | down(&port->port_lock); | |
2394 | ||
2395 | ret = ehea_up(dev); | |
2396 | if (!ret) { | |
2397 | netif_poll_enable(dev); | |
2398 | netif_wake_queue(dev); | |
2399 | } | |
2400 | ||
2401 | up(&port->port_lock); | |
2402 | } | |
2403 | } | |
2404 | } | |
2405 | } | |
2406 | out: | |
2407 | return; | |
2408 | } | |
2409 | ||
7a291083 JBT |
2410 | static void ehea_tx_watchdog(struct net_device *dev) |
2411 | { | |
2412 | struct ehea_port *port = netdev_priv(dev); | |
2413 | ||
2414 | if (netif_carrier_ok(dev)) | |
2415 | queue_work(port->adapter->ehea_wq, &port->reset_task); | |
2416 | } | |
2417 | ||
2418 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
2419 | { | |
2420 | struct hcp_query_ehea *cb; | |
2421 | u64 hret; | |
2422 | int ret; | |
2423 | ||
a1d261c5 | 2424 | cb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2425 | if (!cb) { |
2426 | ret = -ENOMEM; | |
2427 | goto out; | |
2428 | } | |
2429 | ||
2430 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
2431 | ||
2432 | if (hret != H_SUCCESS) { | |
2433 | ret = -EIO; | |
2434 | goto out_herr; | |
2435 | } | |
2436 | ||
7a291083 JBT |
2437 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
2438 | ret = 0; | |
2439 | ||
2440 | out_herr: | |
2441 | kfree(cb); | |
2442 | out: | |
2443 | return ret; | |
2444 | } | |
2445 | ||
1acf2318 | 2446 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 2447 | { |
7a291083 | 2448 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
2449 | u64 hret; |
2450 | int ret = 0; | |
7a291083 | 2451 | |
1acf2318 | 2452 | *jumbo = 0; |
7a291083 | 2453 | |
1acf2318 | 2454 | /* (Try to) enable *jumbo frames */ |
a1d261c5 | 2455 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2456 | if (!cb4) { |
2457 | ehea_error("no mem for cb4"); | |
1acf2318 JBT |
2458 | ret = -ENOMEM; |
2459 | goto out; | |
7a291083 | 2460 | } else { |
1acf2318 | 2461 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
2462 | port->logical_port_id, |
2463 | H_PORT_CB4, | |
2464 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
2465 | if (hret == H_SUCCESS) { |
2466 | if (cb4->jumbo_frame) | |
1acf2318 | 2467 | *jumbo = 1; |
9c750b7d TK |
2468 | else { |
2469 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
2470 | hret = ehea_h_modify_ehea_port(port->adapter-> |
2471 | handle, | |
9c750b7d | 2472 | port-> |
1acf2318 | 2473 | logical_port_id, |
9c750b7d TK |
2474 | H_PORT_CB4, |
2475 | H_PORT_CB4_JUMBO, | |
2476 | cb4); | |
2477 | if (hret == H_SUCCESS) | |
1acf2318 | 2478 | *jumbo = 1; |
9c750b7d | 2479 | } |
1acf2318 JBT |
2480 | } else |
2481 | ret = -EINVAL; | |
2482 | ||
7a291083 JBT |
2483 | kfree(cb4); |
2484 | } | |
1acf2318 JBT |
2485 | out: |
2486 | return ret; | |
2487 | } | |
2488 | ||
2489 | static ssize_t ehea_show_port_id(struct device *dev, | |
2490 | struct device_attribute *attr, char *buf) | |
2491 | { | |
2492 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 2493 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
2494 | } |
2495 | ||
2496 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
2497 | NULL); | |
2498 | ||
2499 | static void __devinit logical_port_release(struct device *dev) | |
2500 | { | |
2501 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
2502 | of_node_put(port->ofdev.node); | |
2503 | } | |
2504 | ||
d1dea38d | 2505 | static int ehea_driver_sysfs_add(struct device *dev, |
d1d25aab | 2506 | struct device_driver *driver) |
d1dea38d TK |
2507 | { |
2508 | int ret; | |
2509 | ||
2510 | ret = sysfs_create_link(&driver->kobj, &dev->kobj, | |
2511 | kobject_name(&dev->kobj)); | |
2512 | if (ret == 0) { | |
2513 | ret = sysfs_create_link(&dev->kobj, &driver->kobj, | |
2514 | "driver"); | |
2515 | if (ret) | |
2516 | sysfs_remove_link(&driver->kobj, | |
2517 | kobject_name(&dev->kobj)); | |
2518 | } | |
2519 | return ret; | |
2520 | } | |
2521 | ||
2522 | static void ehea_driver_sysfs_remove(struct device *dev, | |
d1d25aab | 2523 | struct device_driver *driver) |
d1dea38d TK |
2524 | { |
2525 | struct device_driver *drv = driver; | |
2526 | ||
2527 | if (drv) { | |
2528 | sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj)); | |
2529 | sysfs_remove_link(&dev->kobj, "driver"); | |
2530 | } | |
2531 | } | |
2532 | ||
1acf2318 JBT |
2533 | static struct device *ehea_register_port(struct ehea_port *port, |
2534 | struct device_node *dn) | |
2535 | { | |
2536 | int ret; | |
2537 | ||
2538 | port->ofdev.node = of_node_get(dn); | |
2539 | port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev; | |
d1dea38d | 2540 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 2541 | |
d1dea38d | 2542 | sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++); |
1acf2318 JBT |
2543 | port->ofdev.dev.release = logical_port_release; |
2544 | ||
2545 | ret = of_device_register(&port->ofdev); | |
2546 | if (ret) { | |
2547 | ehea_error("failed to register device. ret=%d", ret); | |
2548 | goto out; | |
2549 | } | |
2550 | ||
2551 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 2552 | if (ret) { |
1acf2318 JBT |
2553 | ehea_error("failed to register attributes, ret=%d", ret); |
2554 | goto out_unreg_of_dev; | |
2555 | } | |
e542aa6b | 2556 | |
d1dea38d TK |
2557 | ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver); |
2558 | if (ret) { | |
2559 | ehea_error("failed to register sysfs driver link"); | |
2560 | goto out_rem_dev_file; | |
2561 | } | |
2562 | ||
1acf2318 JBT |
2563 | return &port->ofdev.dev; |
2564 | ||
d1dea38d TK |
2565 | out_rem_dev_file: |
2566 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
1acf2318 JBT |
2567 | out_unreg_of_dev: |
2568 | of_device_unregister(&port->ofdev); | |
2569 | out: | |
2570 | return NULL; | |
2571 | } | |
2572 | ||
2573 | static void ehea_unregister_port(struct ehea_port *port) | |
2574 | { | |
d1dea38d | 2575 | ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver); |
1acf2318 JBT |
2576 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); |
2577 | of_device_unregister(&port->ofdev); | |
2578 | } | |
2579 | ||
2580 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, | |
2581 | u32 logical_port_id, | |
2582 | struct device_node *dn) | |
2583 | { | |
2584 | int ret; | |
2585 | struct net_device *dev; | |
2586 | struct ehea_port *port; | |
2587 | struct device *port_dev; | |
2588 | int jumbo; | |
2589 | ||
2590 | /* allocate memory for the port structures */ | |
2591 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
2592 | ||
2593 | if (!dev) { | |
2594 | ehea_error("no mem for net_device"); | |
2595 | ret = -ENOMEM; | |
2596 | goto out_err; | |
2597 | } | |
2598 | ||
2599 | port = netdev_priv(dev); | |
2600 | ||
2601 | sema_init(&port->port_lock, 1); | |
2602 | port->state = EHEA_PORT_DOWN; | |
2603 | port->sig_comp_iv = sq_entries / 10; | |
2604 | ||
2605 | port->adapter = adapter; | |
2606 | port->netdev = dev; | |
2607 | port->logical_port_id = logical_port_id; | |
2608 | ||
2609 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
2610 | ||
2611 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
2612 | if (!port->mc_list) { | |
2613 | ret = -ENOMEM; | |
2614 | goto out_free_ethdev; | |
2615 | } | |
2616 | ||
2617 | INIT_LIST_HEAD(&port->mc_list->list); | |
2618 | ||
2619 | ret = ehea_sense_port_attr(port); | |
2620 | if (ret) | |
2621 | goto out_free_mc_list; | |
2622 | ||
2623 | port_dev = ehea_register_port(port, dn); | |
2624 | if (!port_dev) | |
2625 | goto out_free_mc_list; | |
2626 | ||
2627 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
2628 | |
2629 | /* initialize net_device structure */ | |
2630 | SET_MODULE_OWNER(dev); | |
2631 | ||
2632 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); | |
2633 | ||
2634 | dev->open = ehea_open; | |
8d22c971 JBT |
2635 | dev->poll = ehea_poll_firstqueue; |
2636 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2637 | dev->poll_controller = ehea_netpoll; | |
2638 | #endif | |
7a291083 JBT |
2639 | dev->weight = 64; |
2640 | dev->stop = ehea_stop; | |
2641 | dev->hard_start_xmit = ehea_start_xmit; | |
2642 | dev->get_stats = ehea_get_stats; | |
2643 | dev->set_multicast_list = ehea_set_multicast_list; | |
2644 | dev->set_mac_address = ehea_set_mac_addr; | |
2645 | dev->change_mtu = ehea_change_mtu; | |
2646 | dev->vlan_rx_register = ehea_vlan_rx_register; | |
2647 | dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; | |
2648 | dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; | |
2649 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO | |
2650 | | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX | |
2651 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER | |
2652 | | NETIF_F_LLTX; | |
2653 | dev->tx_timeout = &ehea_tx_watchdog; | |
2654 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; | |
2655 | ||
c4028958 | 2656 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 | 2657 | |
f9e29228 TK |
2658 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2659 | if (ret) { | |
2660 | ret = -EIO; | |
2661 | goto out_unreg_port; | |
2662 | } | |
2663 | ||
7a291083 JBT |
2664 | ehea_set_ethtool_ops(dev); |
2665 | ||
2666 | ret = register_netdev(dev); | |
2667 | if (ret) { | |
2668 | ehea_error("register_netdev failed. ret=%d", ret); | |
f9e29228 | 2669 | goto out_dereg_bc; |
7a291083 JBT |
2670 | } |
2671 | ||
1acf2318 | 2672 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 2673 | if (ret) |
1acf2318 JBT |
2674 | ehea_error("failed determining jumbo frame status for %s", |
2675 | port->netdev->name); | |
2676 | ||
9c750b7d TK |
2677 | ehea_info("%s: Jumbo frames are %sabled", dev->name, |
2678 | jumbo == 1 ? "en" : "dis"); | |
2679 | ||
44c82152 TK |
2680 | adapter->active_ports++; |
2681 | ||
1acf2318 | 2682 | return port; |
7a291083 | 2683 | |
f9e29228 TK |
2684 | out_dereg_bc: |
2685 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
2686 | ||
1acf2318 JBT |
2687 | out_unreg_port: |
2688 | ehea_unregister_port(port); | |
2689 | ||
2690 | out_free_mc_list: | |
7a291083 | 2691 | kfree(port->mc_list); |
1acf2318 JBT |
2692 | |
2693 | out_free_ethdev: | |
2694 | free_netdev(dev); | |
2695 | ||
2696 | out_err: | |
2697 | ehea_error("setting up logical port with id=%d failed, ret=%d", | |
2698 | logical_port_id, ret); | |
2699 | return NULL; | |
2700 | } | |
2701 | ||
2702 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
2703 | { | |
2704 | unregister_netdev(port->netdev); | |
2705 | ehea_unregister_port(port); | |
f9e29228 | 2706 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
1acf2318 JBT |
2707 | kfree(port->mc_list); |
2708 | free_netdev(port->netdev); | |
44c82152 | 2709 | port->adapter->active_ports--; |
7a291083 JBT |
2710 | } |
2711 | ||
2712 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
2713 | { | |
1acf2318 JBT |
2714 | struct device_node *lhea_dn; |
2715 | struct device_node *eth_dn = NULL; | |
d1d25aab | 2716 | |
9f9a3b8a | 2717 | const u32 *dn_log_port_id; |
1acf2318 JBT |
2718 | int i = 0; |
2719 | ||
2720 | lhea_dn = adapter->ebus_dev->ofdev.node; | |
1eef4e04 | 2721 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 2722 | |
40cd3a45 | 2723 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 2724 | NULL); |
1acf2318 JBT |
2725 | if (!dn_log_port_id) { |
2726 | ehea_error("bad device node: eth_dn name=%s", | |
2727 | eth_dn->full_name); | |
2728 | continue; | |
2729 | } | |
7a291083 | 2730 | |
1211bb6d TK |
2731 | if (ehea_add_adapter_mr(adapter)) { |
2732 | ehea_error("creating MR failed"); | |
2733 | of_node_put(eth_dn); | |
2734 | return -EIO; | |
2735 | } | |
2736 | ||
1acf2318 JBT |
2737 | adapter->port[i] = ehea_setup_single_port(adapter, |
2738 | *dn_log_port_id, | |
2739 | eth_dn); | |
7a291083 | 2740 | if (adapter->port[i]) |
1acf2318 | 2741 | ehea_info("%s -> logical port id #%d", |
e542aa6b | 2742 | adapter->port[i]->netdev->name, |
1acf2318 | 2743 | *dn_log_port_id); |
1211bb6d TK |
2744 | else |
2745 | ehea_remove_adapter_mr(adapter); | |
2746 | ||
1acf2318 | 2747 | i++; |
1eef4e04 | 2748 | }; |
7a291083 | 2749 | |
1211bb6d | 2750 | return 0; |
1acf2318 JBT |
2751 | } |
2752 | ||
e542aa6b JBT |
2753 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
2754 | u32 logical_port_id) | |
1acf2318 JBT |
2755 | { |
2756 | struct device_node *lhea_dn; | |
2757 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 2758 | const u32 *dn_log_port_id; |
1acf2318 JBT |
2759 | |
2760 | lhea_dn = adapter->ebus_dev->ofdev.node; | |
1eef4e04 | 2761 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 2762 | |
40cd3a45 | 2763 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 2764 | NULL); |
1acf2318 JBT |
2765 | if (dn_log_port_id) |
2766 | if (*dn_log_port_id == logical_port_id) | |
2767 | return eth_dn; | |
1eef4e04 | 2768 | }; |
1acf2318 JBT |
2769 | |
2770 | return NULL; | |
2771 | } | |
2772 | ||
2773 | static ssize_t ehea_probe_port(struct device *dev, | |
2774 | struct device_attribute *attr, | |
2775 | const char *buf, size_t count) | |
2776 | { | |
2777 | struct ehea_adapter *adapter = dev->driver_data; | |
2778 | struct ehea_port *port; | |
2779 | struct device_node *eth_dn = NULL; | |
2780 | int i; | |
2781 | ||
2782 | u32 logical_port_id; | |
2783 | ||
a8e34fda | 2784 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
2785 | |
2786 | port = ehea_get_port(adapter, logical_port_id); | |
2787 | ||
2788 | if (port) { | |
2789 | ehea_info("adding port with logical port id=%d failed. port " | |
2790 | "already configured as %s.", logical_port_id, | |
2791 | port->netdev->name); | |
2792 | return -EINVAL; | |
7a291083 | 2793 | } |
e542aa6b | 2794 | |
1acf2318 | 2795 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 2796 | |
1acf2318 JBT |
2797 | if (!eth_dn) { |
2798 | ehea_info("no logical port with id %d found", logical_port_id); | |
2799 | return -EINVAL; | |
2800 | } | |
e542aa6b | 2801 | |
1211bb6d TK |
2802 | if (ehea_add_adapter_mr(adapter)) { |
2803 | ehea_error("creating MR failed"); | |
2804 | return -EIO; | |
2805 | } | |
2806 | ||
1acf2318 | 2807 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 2808 | |
1eef4e04 JBT |
2809 | of_node_put(eth_dn); |
2810 | ||
1acf2318 JBT |
2811 | if (port) { |
2812 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
2813 | if (!adapter->port[i]) { | |
2814 | adapter->port[i] = port; | |
2815 | break; | |
2816 | } | |
7a291083 | 2817 | |
1acf2318 JBT |
2818 | ehea_info("added %s (logical port id=%d)", port->netdev->name, |
2819 | logical_port_id); | |
1211bb6d TK |
2820 | } else { |
2821 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 2822 | return -EIO; |
1211bb6d | 2823 | } |
7a291083 | 2824 | |
1acf2318 JBT |
2825 | return (ssize_t) count; |
2826 | } | |
2827 | ||
2828 | static ssize_t ehea_remove_port(struct device *dev, | |
2829 | struct device_attribute *attr, | |
2830 | const char *buf, size_t count) | |
2831 | { | |
2832 | struct ehea_adapter *adapter = dev->driver_data; | |
2833 | struct ehea_port *port; | |
2834 | int i; | |
2835 | u32 logical_port_id; | |
2836 | ||
a8e34fda | 2837 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
2838 | |
2839 | port = ehea_get_port(adapter, logical_port_id); | |
2840 | ||
2841 | if (port) { | |
2842 | ehea_info("removed %s (logical port id=%d)", port->netdev->name, | |
2843 | logical_port_id); | |
2844 | ||
2845 | ehea_shutdown_single_port(port); | |
2846 | ||
2847 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
2848 | if (adapter->port[i] == port) { | |
2849 | adapter->port[i] = NULL; | |
2850 | break; | |
2851 | } | |
2852 | } else { | |
2853 | ehea_error("removing port with logical port id=%d failed. port " | |
2854 | "not configured.", logical_port_id); | |
2855 | return -EINVAL; | |
2856 | } | |
2857 | ||
1211bb6d TK |
2858 | ehea_remove_adapter_mr(adapter); |
2859 | ||
1acf2318 JBT |
2860 | return (ssize_t) count; |
2861 | } | |
2862 | ||
2863 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
2864 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
2865 | ||
2866 | int ehea_create_device_sysfs(struct ibmebus_dev *dev) | |
2867 | { | |
2868 | int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port); | |
2869 | if (ret) | |
2870 | goto out; | |
2871 | ||
2872 | ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port); | |
2873 | out: | |
7a291083 JBT |
2874 | return ret; |
2875 | } | |
2876 | ||
1acf2318 JBT |
2877 | void ehea_remove_device_sysfs(struct ibmebus_dev *dev) |
2878 | { | |
2879 | device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port); | |
2880 | device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port); | |
2881 | } | |
2882 | ||
2883 | static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev, | |
2884 | const struct of_device_id *id) | |
7a291083 JBT |
2885 | { |
2886 | struct ehea_adapter *adapter; | |
9f9a3b8a | 2887 | const u64 *adapter_handle; |
7a291083 JBT |
2888 | int ret; |
2889 | ||
1eef4e04 JBT |
2890 | if (!dev || !dev->ofdev.node) { |
2891 | ehea_error("Invalid ibmebus device probed"); | |
2892 | return -EINVAL; | |
2893 | } | |
2894 | ||
7a291083 JBT |
2895 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
2896 | if (!adapter) { | |
2897 | ret = -ENOMEM; | |
2898 | dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n"); | |
2899 | goto out; | |
2900 | } | |
2901 | ||
44c82152 TK |
2902 | list_add(&adapter->list, &adapter_list); |
2903 | ||
1acf2318 JBT |
2904 | adapter->ebus_dev = dev; |
2905 | ||
40cd3a45 | 2906 | adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle", |
d1d25aab | 2907 | NULL); |
061bf3cd TK |
2908 | if (adapter_handle) |
2909 | adapter->handle = *adapter_handle; | |
2910 | ||
2911 | if (!adapter->handle) { | |
7a291083 JBT |
2912 | dev_err(&dev->ofdev.dev, "failed getting handle for adapter" |
2913 | " '%s'\n", dev->ofdev.node->full_name); | |
2914 | ret = -ENODEV; | |
2915 | goto out_free_ad; | |
2916 | } | |
2917 | ||
7a291083 JBT |
2918 | adapter->pd = EHEA_PD_ID; |
2919 | ||
2920 | dev->ofdev.dev.driver_data = adapter; | |
2921 | ||
7a291083 JBT |
2922 | |
2923 | /* initialize adapter and ports */ | |
2924 | /* get adapter properties */ | |
2925 | ret = ehea_sense_adapter_attr(adapter); | |
2926 | if (ret) { | |
2927 | dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret); | |
1211bb6d | 2928 | goto out_free_ad; |
7a291083 | 2929 | } |
7a291083 JBT |
2930 | |
2931 | adapter->neq = ehea_create_eq(adapter, | |
2932 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
2933 | if (!adapter->neq) { | |
1eef4e04 | 2934 | ret = -EIO; |
7a291083 | 2935 | dev_err(&dev->ofdev.dev, "NEQ creation failed"); |
1211bb6d | 2936 | goto out_free_ad; |
7a291083 JBT |
2937 | } |
2938 | ||
2939 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
2940 | (unsigned long)adapter); | |
2941 | ||
2942 | ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1, | |
38515e90 | 2943 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
2944 | "ehea_neq", adapter); |
2945 | if (ret) { | |
2946 | dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed"); | |
2947 | goto out_kill_eq; | |
2948 | } | |
2949 | ||
2950 | adapter->ehea_wq = create_workqueue("ehea_wq"); | |
1eef4e04 JBT |
2951 | if (!adapter->ehea_wq) { |
2952 | ret = -EIO; | |
7a291083 | 2953 | goto out_free_irq; |
1eef4e04 | 2954 | } |
7a291083 | 2955 | |
1eef4e04 JBT |
2956 | ret = ehea_create_device_sysfs(dev); |
2957 | if (ret) | |
1acf2318 JBT |
2958 | goto out_kill_wq; |
2959 | ||
7a291083 JBT |
2960 | ret = ehea_setup_ports(adapter); |
2961 | if (ret) { | |
2962 | dev_err(&dev->ofdev.dev, "setup_ports failed"); | |
1acf2318 | 2963 | goto out_rem_dev_sysfs; |
7a291083 JBT |
2964 | } |
2965 | ||
2966 | ret = 0; | |
2967 | goto out; | |
2968 | ||
1acf2318 JBT |
2969 | out_rem_dev_sysfs: |
2970 | ehea_remove_device_sysfs(dev); | |
2971 | ||
7a291083 JBT |
2972 | out_kill_wq: |
2973 | destroy_workqueue(adapter->ehea_wq); | |
2974 | ||
2975 | out_free_irq: | |
2976 | ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); | |
2977 | ||
2978 | out_kill_eq: | |
2979 | ehea_destroy_eq(adapter->neq); | |
2980 | ||
7a291083 JBT |
2981 | out_free_ad: |
2982 | kfree(adapter); | |
2983 | out: | |
2984 | return ret; | |
2985 | } | |
2986 | ||
7a291083 JBT |
2987 | static int __devexit ehea_remove(struct ibmebus_dev *dev) |
2988 | { | |
2989 | struct ehea_adapter *adapter = dev->ofdev.dev.driver_data; | |
7a291083 JBT |
2990 | int i; |
2991 | ||
1acf2318 | 2992 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
2993 | if (adapter->port[i]) { |
2994 | ehea_shutdown_single_port(adapter->port[i]); | |
2995 | adapter->port[i] = NULL; | |
2996 | } | |
1acf2318 JBT |
2997 | |
2998 | ehea_remove_device_sysfs(dev); | |
2999 | ||
7a291083 JBT |
3000 | destroy_workqueue(adapter->ehea_wq); |
3001 | ||
3002 | ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); | |
d4150a27 | 3003 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3004 | |
3005 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3006 | ehea_remove_adapter_mr(adapter); |
44c82152 TK |
3007 | list_del(&adapter->list); |
3008 | ||
7a291083 | 3009 | kfree(adapter); |
44c82152 | 3010 | |
7a291083 JBT |
3011 | return 0; |
3012 | } | |
3013 | ||
3014 | static int check_module_parm(void) | |
3015 | { | |
3016 | int ret = 0; | |
3017 | ||
3018 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3019 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
3020 | ehea_info("Bad parameter: rq1_entries"); | |
3021 | ret = -EINVAL; | |
3022 | } | |
3023 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3024 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
3025 | ehea_info("Bad parameter: rq2_entries"); | |
3026 | ret = -EINVAL; | |
3027 | } | |
3028 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3029 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
3030 | ehea_info("Bad parameter: rq3_entries"); | |
3031 | ret = -EINVAL; | |
3032 | } | |
3033 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3034 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
3035 | ehea_info("Bad parameter: sq_entries"); | |
3036 | ret = -EINVAL; | |
3037 | } | |
3038 | ||
3039 | return ret; | |
3040 | } | |
3041 | ||
4c3ca4da JBT |
3042 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3043 | char *buf) | |
3044 | { | |
3045 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3046 | } | |
3047 | ||
3048 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3049 | ehea_show_capabilities, NULL); | |
3050 | ||
7a291083 JBT |
3051 | int __init ehea_module_init(void) |
3052 | { | |
3053 | int ret; | |
3054 | ||
3055 | printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", | |
3056 | DRV_VERSION); | |
3057 | ||
44c82152 TK |
3058 | ehea_driver_wq = create_workqueue("ehea_driver_wq"); |
3059 | ||
3060 | INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); | |
3061 | ||
7a291083 JBT |
3062 | ret = check_module_parm(); |
3063 | if (ret) | |
3064 | goto out; | |
44c82152 TK |
3065 | |
3066 | ret = ehea_create_busmap(); | |
3067 | if (ret) | |
3068 | goto out; | |
3069 | ||
7a291083 | 3070 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3071 | if (ret) { |
7a291083 | 3072 | ehea_error("failed registering eHEA device driver on ebus"); |
4c3ca4da JBT |
3073 | goto out; |
3074 | } | |
3075 | ||
3076 | ret = driver_create_file(&ehea_driver.driver, | |
3077 | &driver_attr_capabilities); | |
3078 | if (ret) { | |
3079 | ehea_error("failed to register capabilities attribute, ret=%d", | |
3080 | ret); | |
3081 | ibmebus_unregister_driver(&ehea_driver); | |
3082 | goto out; | |
3083 | } | |
7a291083 JBT |
3084 | |
3085 | out: | |
3086 | return ret; | |
3087 | } | |
3088 | ||
3089 | static void __exit ehea_module_exit(void) | |
3090 | { | |
f46f6ba9 | 3091 | destroy_workqueue(ehea_driver_wq); |
4c3ca4da | 3092 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3093 | ibmebus_unregister_driver(&ehea_driver); |
44c82152 | 3094 | ehea_destroy_busmap(); |
7a291083 JBT |
3095 | } |
3096 | ||
3097 | module_init(ehea_module_init); | |
3098 | module_exit(ehea_module_exit); |