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