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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> | |
2a6f4e49 JBT |
36 | #include <linux/notifier.h> |
37 | #include <linux/reboot.h> | |
38 | ||
7a291083 JBT |
39 | #include <net/ip.h> |
40 | ||
41 | #include "ehea.h" | |
42 | #include "ehea_qmr.h" | |
43 | #include "ehea_phyp.h" | |
44 | ||
45 | ||
46 | MODULE_LICENSE("GPL"); | |
47 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
48 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
49 | MODULE_VERSION(DRV_VERSION); | |
50 | ||
51 | ||
52 | static int msg_level = -1; | |
53 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
54 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
55 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
56 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
18604c54 | 57 | static int use_mcs = 0; |
d4dc4ec9 JBT |
58 | static int use_lro = 0; |
59 | static int lro_max_aggr = EHEA_LRO_MAX_AGGR; | |
18604c54 | 60 | static int num_tx_qps = EHEA_NUM_TX_QP; |
8759cf76 | 61 | static int prop_carrier_state = 0; |
7a291083 JBT |
62 | |
63 | module_param(msg_level, int, 0); | |
64 | module_param(rq1_entries, int, 0); | |
65 | module_param(rq2_entries, int, 0); | |
66 | module_param(rq3_entries, int, 0); | |
67 | module_param(sq_entries, int, 0); | |
8759cf76 | 68 | module_param(prop_carrier_state, int, 0); |
18604c54 | 69 | module_param(use_mcs, int, 0); |
d4dc4ec9 JBT |
70 | module_param(use_lro, int, 0); |
71 | module_param(lro_max_aggr, int, 0); | |
18604c54 | 72 | module_param(num_tx_qps, int, 0); |
7a291083 | 73 | |
18604c54 | 74 | MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
7a291083 | 75 | MODULE_PARM_DESC(msg_level, "msg_level"); |
8759cf76 JBT |
76 | MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
77 | "port to stack. 1:yes, 0:no. Default = 0 "); | |
7a291083 JBT |
78 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
79 | "[2^x - 1], x = [6..14]. Default = " | |
80 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); | |
81 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
82 | "[2^x - 1], x = [6..14]. Default = " | |
83 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); | |
84 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
85 | "[2^x - 1], x = [6..14]. Default = " | |
86 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); | |
87 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
88 | "[2^x - 1], x = [6..14]. Default = " | |
89 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); | |
18072a5b | 90 | MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
7a291083 | 91 | |
d4dc4ec9 JBT |
92 | MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " |
93 | __MODULE_STRING(EHEA_LRO_MAX_AGGR)); | |
94 | MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " | |
95 | "Default = 0"); | |
96 | ||
d1dea38d | 97 | static int port_name_cnt = 0; |
44c82152 TK |
98 | static LIST_HEAD(adapter_list); |
99 | u64 ehea_driver_flags = 0; | |
44c82152 TK |
100 | struct work_struct ehea_rereg_mr_task; |
101 | ||
2c69448b | 102 | struct semaphore dlpar_mem_lock; |
d1dea38d | 103 | |
6b08f3ae | 104 | static int __devinit ehea_probe_adapter(struct of_device *dev, |
d1d25aab | 105 | const struct of_device_id *id); |
d1dea38d | 106 | |
6b08f3ae | 107 | static int __devexit ehea_remove(struct of_device *dev); |
d1dea38d TK |
108 | |
109 | static struct of_device_id ehea_device_table[] = { | |
110 | { | |
111 | .name = "lhea", | |
112 | .compatible = "IBM,lhea", | |
113 | }, | |
114 | {}, | |
115 | }; | |
116 | ||
6b08f3ae | 117 | static struct of_platform_driver ehea_driver = { |
d1dea38d | 118 | .name = "ehea", |
6b08f3ae | 119 | .match_table = ehea_device_table, |
d1dea38d TK |
120 | .probe = ehea_probe_adapter, |
121 | .remove = ehea_remove, | |
122 | }; | |
123 | ||
7a291083 JBT |
124 | void ehea_dump(void *adr, int len, char *msg) { |
125 | int x; | |
126 | unsigned char *deb = adr; | |
127 | for (x = 0; x < len; x += 16) { | |
d2db9eea | 128 | printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg, |
7a291083 JBT |
129 | deb, x, *((u64*)&deb[0]), *((u64*)&deb[8])); |
130 | deb += 16; | |
131 | } | |
132 | } | |
133 | ||
134 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) | |
135 | { | |
136 | struct ehea_port *port = netdev_priv(dev); | |
137 | struct net_device_stats *stats = &port->stats; | |
138 | struct hcp_ehea_port_cb2 *cb2; | |
139 | u64 hret, rx_packets; | |
140 | int i; | |
141 | ||
142 | memset(stats, 0, sizeof(*stats)); | |
143 | ||
a1d261c5 | 144 | cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
145 | if (!cb2) { |
146 | ehea_error("no mem for cb2"); | |
147 | goto out; | |
148 | } | |
149 | ||
150 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
151 | port->logical_port_id, | |
152 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
153 | if (hret != H_SUCCESS) { | |
154 | ehea_error("query_ehea_port failed"); | |
155 | goto out_herr; | |
156 | } | |
157 | ||
158 | if (netif_msg_hw(port)) | |
159 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
160 | ||
161 | rx_packets = 0; | |
162 | for (i = 0; i < port->num_def_qps; i++) | |
163 | rx_packets += port->port_res[i].rx_packets; | |
164 | ||
165 | stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp; | |
166 | stats->multicast = cb2->rxmcp; | |
167 | stats->rx_errors = cb2->rxuerr; | |
168 | stats->rx_bytes = cb2->rxo; | |
169 | stats->tx_bytes = cb2->txo; | |
170 | stats->rx_packets = rx_packets; | |
171 | ||
172 | out_herr: | |
173 | kfree(cb2); | |
174 | out: | |
175 | return stats; | |
176 | } | |
177 | ||
178 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
179 | { | |
180 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
181 | struct net_device *dev = pr->port->netdev; | |
182 | int max_index_mask = pr->rq1_skba.len - 1; | |
2c69448b JBT |
183 | int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
184 | int adder = 0; | |
7a291083 JBT |
185 | int i; |
186 | ||
2c69448b JBT |
187 | pr->rq1_skba.os_skbs = 0; |
188 | ||
189 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { | |
190 | pr->rq1_skba.index = index; | |
191 | pr->rq1_skba.os_skbs = fill_wqes; | |
7a291083 | 192 | return; |
2c69448b | 193 | } |
7a291083 | 194 | |
2c69448b | 195 | for (i = 0; i < fill_wqes; i++) { |
7a291083 JBT |
196 | if (!skb_arr_rq1[index]) { |
197 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
198 | EHEA_L_PKT_SIZE); | |
199 | if (!skb_arr_rq1[index]) { | |
2c69448b | 200 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
201 | ehea_error("%s: no mem for skb/%d wqes filled", |
202 | dev->name, i); | |
203 | break; | |
204 | } | |
205 | } | |
206 | index--; | |
207 | index &= max_index_mask; | |
2c69448b | 208 | adder++; |
7a291083 | 209 | } |
2c69448b JBT |
210 | |
211 | if (adder == 0) | |
212 | return; | |
213 | ||
7a291083 | 214 | /* Ring doorbell */ |
2c69448b | 215 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
216 | } |
217 | ||
218 | static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) | |
219 | { | |
220 | int ret = 0; | |
221 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
222 | struct net_device *dev = pr->port->netdev; | |
223 | int i; | |
224 | ||
225 | for (i = 0; i < pr->rq1_skba.len; i++) { | |
226 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); | |
227 | if (!skb_arr_rq1[i]) { | |
228 | ehea_error("%s: no mem for skb/%d wqes filled", | |
229 | dev->name, i); | |
230 | ret = -ENOMEM; | |
231 | goto out; | |
232 | } | |
233 | } | |
234 | /* Ring doorbell */ | |
235 | ehea_update_rq1a(pr->qp, nr_rq1a); | |
236 | out: | |
237 | return ret; | |
238 | } | |
239 | ||
240 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
241 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
242 | int num_wqes, int wqe_type, int packet_size) | |
243 | { | |
244 | struct net_device *dev = pr->port->netdev; | |
245 | struct ehea_qp *qp = pr->qp; | |
246 | struct sk_buff **skb_arr = q_skba->arr; | |
247 | struct ehea_rwqe *rwqe; | |
248 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 249 | int adder = 0; |
7a291083 JBT |
250 | int ret = 0; |
251 | ||
252 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 253 | q_skba->os_skbs = 0; |
7a291083 | 254 | |
2c69448b JBT |
255 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
256 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 257 | return ret; |
2c69448b | 258 | } |
7a291083 JBT |
259 | |
260 | index = q_skba->index; | |
261 | max_index_mask = q_skba->len - 1; | |
262 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 263 | u64 tmp_addr; |
7a291083 JBT |
264 | struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); |
265 | if (!skb) { | |
266 | ehea_error("%s: no mem for skb/%d wqes filled", | |
18604c54 | 267 | pr->port->netdev->name, i); |
7a291083 JBT |
268 | q_skba->os_skbs = fill_wqes - i; |
269 | ret = -ENOMEM; | |
270 | break; | |
271 | } | |
272 | skb_reserve(skb, NET_IP_ALIGN); | |
273 | ||
274 | skb_arr[index] = skb; | |
2c69448b JBT |
275 | tmp_addr = ehea_map_vaddr(skb->data); |
276 | if (tmp_addr == -1) { | |
277 | dev_kfree_skb(skb); | |
278 | q_skba->os_skbs = fill_wqes - i; | |
279 | ret = 0; | |
280 | break; | |
281 | } | |
7a291083 JBT |
282 | |
283 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
284 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 285 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 286 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 287 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
288 | rwqe->sg_list[0].len = packet_size; |
289 | rwqe->data_segments = 1; | |
290 | ||
291 | index++; | |
292 | index &= max_index_mask; | |
2c69448b | 293 | adder++; |
7a291083 | 294 | } |
44c82152 | 295 | |
7a291083 | 296 | q_skba->index = index; |
2c69448b JBT |
297 | if (adder == 0) |
298 | goto out; | |
7a291083 JBT |
299 | |
300 | /* Ring doorbell */ | |
301 | iosync(); | |
302 | if (rq_nr == 2) | |
2c69448b | 303 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 304 | else |
2c69448b | 305 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 306 | out: |
7a291083 JBT |
307 | return ret; |
308 | } | |
309 | ||
310 | ||
311 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
312 | { | |
313 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
314 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
315 | EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); | |
316 | } | |
317 | ||
318 | ||
319 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
320 | { | |
321 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
322 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
323 | EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); | |
324 | } | |
325 | ||
326 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
327 | { | |
328 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
329 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
330 | return 0; | |
331 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
332 | (cqe->header_length == 0)) | |
333 | return 0; | |
334 | return -EINVAL; | |
335 | } | |
336 | ||
337 | static inline void ehea_fill_skb(struct net_device *dev, | |
338 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
339 | { | |
340 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
341 | ||
342 | skb_put(skb, length); | |
343 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
344 | skb->protocol = eth_type_trans(skb, dev); | |
345 | } | |
346 | ||
347 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
348 | int arr_len, | |
349 | struct ehea_cqe *cqe) | |
350 | { | |
351 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
352 | struct sk_buff *skb; | |
353 | void *pref; | |
354 | int x; | |
355 | ||
356 | x = skb_index + 1; | |
357 | x &= (arr_len - 1); | |
358 | ||
359 | pref = skb_array[x]; | |
360 | prefetchw(pref); | |
361 | prefetchw(pref + EHEA_CACHE_LINE); | |
362 | ||
363 | pref = (skb_array[x]->data); | |
364 | prefetch(pref); | |
365 | prefetch(pref + EHEA_CACHE_LINE); | |
366 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
367 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
368 | skb = skb_array[skb_index]; | |
369 | skb_array[skb_index] = NULL; | |
370 | return skb; | |
371 | } | |
372 | ||
373 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
374 | int arr_len, int wqe_index) | |
375 | { | |
376 | struct sk_buff *skb; | |
377 | void *pref; | |
378 | int x; | |
379 | ||
380 | x = wqe_index + 1; | |
381 | x &= (arr_len - 1); | |
382 | ||
383 | pref = skb_array[x]; | |
384 | prefetchw(pref); | |
385 | prefetchw(pref + EHEA_CACHE_LINE); | |
386 | ||
387 | pref = (skb_array[x]->data); | |
388 | prefetchw(pref); | |
389 | prefetchw(pref + EHEA_CACHE_LINE); | |
390 | ||
391 | skb = skb_array[wqe_index]; | |
392 | skb_array[wqe_index] = NULL; | |
393 | return skb; | |
394 | } | |
395 | ||
396 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
397 | struct ehea_cqe *cqe, int *processed_rq2, | |
398 | int *processed_rq3) | |
399 | { | |
400 | struct sk_buff *skb; | |
401 | ||
acbddb59 JBT |
402 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
403 | pr->p_stats.err_tcp_cksum++; | |
404 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
405 | pr->p_stats.err_ip_cksum++; | |
406 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
407 | pr->p_stats.err_frame_crc++; | |
408 | ||
7a291083 JBT |
409 | if (netif_msg_rx_err(pr->port)) { |
410 | ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr); | |
411 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
412 | } | |
413 | ||
414 | if (rq == 2) { | |
415 | *processed_rq2 += 1; | |
416 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
417 | dev_kfree_skb(skb); | |
418 | } else if (rq == 3) { | |
419 | *processed_rq3 += 1; | |
420 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
421 | dev_kfree_skb(skb); | |
422 | } | |
423 | ||
424 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
425 | ehea_error("Critical receive error. Resetting port."); | |
3bf76b81 | 426 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
427 | return 1; |
428 | } | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
d4dc4ec9 JBT |
433 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
434 | void **tcph, u64 *hdr_flags, void *priv) | |
435 | { | |
436 | struct ehea_cqe *cqe = priv; | |
437 | unsigned int ip_len; | |
438 | struct iphdr *iph; | |
439 | ||
440 | /* non tcp/udp packets */ | |
441 | if (!cqe->header_length) | |
442 | return -1; | |
443 | ||
444 | /* non tcp packet */ | |
445 | skb_reset_network_header(skb); | |
446 | iph = ip_hdr(skb); | |
447 | if (iph->protocol != IPPROTO_TCP) | |
448 | return -1; | |
449 | ||
450 | ip_len = ip_hdrlen(skb); | |
451 | skb_set_transport_header(skb, ip_len); | |
452 | *tcph = tcp_hdr(skb); | |
453 | ||
454 | /* check if ip header and tcp header are complete */ | |
455 | if (iph->tot_len < ip_len + tcp_hdrlen(skb)) | |
456 | return -1; | |
457 | ||
458 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
459 | *iphdr = iph; | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
464 | static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, | |
465 | struct sk_buff *skb) | |
466 | { | |
467 | int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) | |
468 | && pr->port->vgrp; | |
469 | ||
470 | if (use_lro) { | |
471 | if (vlan_extracted) | |
472 | lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, | |
473 | pr->port->vgrp, | |
474 | cqe->vlan_tag, | |
475 | cqe); | |
476 | else | |
477 | lro_receive_skb(&pr->lro_mgr, skb, cqe); | |
478 | } else { | |
479 | if (vlan_extracted) | |
480 | vlan_hwaccel_receive_skb(skb, pr->port->vgrp, | |
481 | cqe->vlan_tag); | |
482 | else | |
483 | netif_receive_skb(skb); | |
484 | } | |
485 | } | |
486 | ||
bea3348e SH |
487 | static int ehea_proc_rwqes(struct net_device *dev, |
488 | struct ehea_port_res *pr, | |
489 | int budget) | |
7a291083 | 490 | { |
18604c54 | 491 | struct ehea_port *port = pr->port; |
7a291083 JBT |
492 | struct ehea_qp *qp = pr->qp; |
493 | struct ehea_cqe *cqe; | |
494 | struct sk_buff *skb; | |
495 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
496 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
497 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
498 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
499 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
500 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
501 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
bea3348e | 502 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
503 | |
504 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
505 | last_wqe_index = 0; | |
7a291083 | 506 | |
7a291083 | 507 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 508 | while ((processed < budget) && cqe) { |
7a291083 JBT |
509 | ehea_inc_rq1(qp); |
510 | processed_rq1++; | |
511 | processed++; | |
7a291083 JBT |
512 | if (netif_msg_rx_status(port)) |
513 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
514 | ||
515 | last_wqe_index = wqe_index; | |
516 | rmb(); | |
517 | if (!ehea_check_cqe(cqe, &rq)) { | |
518 | if (rq == 1) { /* LL RQ1 */ | |
519 | skb = get_skb_by_index_ll(skb_arr_rq1, | |
520 | skb_arr_rq1_len, | |
521 | wqe_index); | |
522 | if (unlikely(!skb)) { | |
523 | if (netif_msg_rx_err(port)) | |
524 | ehea_error("LL rq1: skb=NULL"); | |
18604c54 | 525 | |
bea3348e | 526 | skb = netdev_alloc_skb(dev, |
7a291083 JBT |
527 | EHEA_L_PKT_SIZE); |
528 | if (!skb) | |
529 | break; | |
530 | } | |
27d7ff46 | 531 | skb_copy_to_linear_data(skb, ((char*)cqe) + 64, |
d1d25aab | 532 | cqe->num_bytes_transfered - 4); |
bea3348e | 533 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
534 | } else if (rq == 2) { /* RQ2 */ |
535 | skb = get_skb_by_index(skb_arr_rq2, | |
536 | skb_arr_rq2_len, cqe); | |
537 | if (unlikely(!skb)) { | |
538 | if (netif_msg_rx_err(port)) | |
539 | ehea_error("rq2: skb=NULL"); | |
540 | break; | |
541 | } | |
bea3348e | 542 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
543 | processed_rq2++; |
544 | } else { /* RQ3 */ | |
545 | skb = get_skb_by_index(skb_arr_rq3, | |
546 | skb_arr_rq3_len, cqe); | |
547 | if (unlikely(!skb)) { | |
548 | if (netif_msg_rx_err(port)) | |
549 | ehea_error("rq3: skb=NULL"); | |
550 | break; | |
551 | } | |
bea3348e | 552 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
553 | processed_rq3++; |
554 | } | |
555 | ||
d4dc4ec9 | 556 | ehea_proc_skb(pr, cqe, skb); |
bea3348e | 557 | dev->last_rx = jiffies; |
18604c54 | 558 | } else { |
acbddb59 | 559 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
560 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
561 | &processed_rq2, | |
562 | &processed_rq3); | |
563 | if (port_reset) | |
564 | break; | |
565 | } | |
566 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
567 | } | |
d4dc4ec9 JBT |
568 | if (use_lro) |
569 | lro_flush_all(&pr->lro_mgr); | |
7a291083 | 570 | |
7a291083 JBT |
571 | pr->rx_packets += processed; |
572 | ||
573 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
574 | ehea_refill_rq2(pr, processed_rq2); | |
575 | ehea_refill_rq3(pr, processed_rq3); | |
576 | ||
bea3348e | 577 | return processed; |
7a291083 JBT |
578 | } |
579 | ||
18604c54 | 580 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 581 | { |
acbddb59 | 582 | struct sk_buff *skb; |
7a291083 JBT |
583 | struct ehea_cq *send_cq = pr->send_cq; |
584 | struct ehea_cqe *cqe; | |
18604c54 | 585 | int quota = my_quota; |
7a291083 JBT |
586 | int cqe_counter = 0; |
587 | int swqe_av = 0; | |
acbddb59 | 588 | int index; |
7a291083 JBT |
589 | unsigned long flags; |
590 | ||
18604c54 JBT |
591 | cqe = ehea_poll_cq(send_cq); |
592 | while(cqe && (quota > 0)) { | |
593 | ehea_inc_cq(send_cq); | |
594 | ||
7a291083 JBT |
595 | cqe_counter++; |
596 | rmb(); | |
597 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { | |
598 | ehea_error("Send Completion Error: Resetting port"); | |
599 | if (netif_msg_tx_err(pr->port)) | |
600 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
3bf76b81 | 601 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
602 | break; |
603 | } | |
604 | ||
605 | if (netif_msg_tx_done(pr->port)) | |
606 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
607 | ||
608 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
609 | == EHEA_SWQE2_TYPE)) { |
610 | ||
611 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
612 | skb = pr->sq_skba.arr[index]; | |
613 | dev_kfree_skb(skb); | |
614 | pr->sq_skba.arr[index] = NULL; | |
615 | } | |
7a291083 JBT |
616 | |
617 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
618 | quota--; | |
18604c54 JBT |
619 | |
620 | cqe = ehea_poll_cq(send_cq); | |
621 | }; | |
7a291083 JBT |
622 | |
623 | ehea_update_feca(send_cq, cqe_counter); | |
624 | atomic_add(swqe_av, &pr->swqe_avail); | |
625 | ||
626 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 627 | |
7a291083 JBT |
628 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
629 | >= pr->swqe_refill_th)) { | |
630 | netif_wake_queue(pr->port->netdev); | |
631 | pr->queue_stopped = 0; | |
632 | } | |
633 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
634 | ||
18604c54 | 635 | return cqe; |
7a291083 JBT |
636 | } |
637 | ||
18604c54 | 638 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
bea3348e | 639 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 640 | |
bea3348e | 641 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 642 | { |
bea3348e SH |
643 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, napi); |
644 | struct net_device *dev = pr->port->netdev; | |
18604c54 JBT |
645 | struct ehea_cqe *cqe; |
646 | struct ehea_cqe *cqe_skb = NULL; | |
647 | int force_irq, wqe_index; | |
bea3348e | 648 | int rx = 0; |
18604c54 JBT |
649 | |
650 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
bea3348e SH |
651 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
652 | ||
653 | if (!force_irq) | |
654 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
18604c54 | 655 | |
bea3348e | 656 | while ((rx != budget) || force_irq) { |
18604c54 | 657 | pr->poll_counter = 0; |
bea3348e SH |
658 | force_irq = 0; |
659 | netif_rx_complete(dev, napi); | |
18604c54 JBT |
660 | ehea_reset_cq_ep(pr->recv_cq); |
661 | ehea_reset_cq_ep(pr->send_cq); | |
662 | ehea_reset_cq_n1(pr->recv_cq); | |
663 | ehea_reset_cq_n1(pr->send_cq); | |
664 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); | |
665 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
666 | ||
e542aa6b | 667 | if (!cqe && !cqe_skb) |
bea3348e | 668 | return rx; |
18604c54 | 669 | |
bea3348e SH |
670 | if (!netif_rx_reschedule(dev, napi)) |
671 | return rx; | |
18604c54 | 672 | |
bea3348e SH |
673 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
674 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
675 | } | |
e542aa6b | 676 | |
bea3348e SH |
677 | pr->poll_counter++; |
678 | return rx; | |
7a291083 JBT |
679 | } |
680 | ||
8d22c971 JBT |
681 | #ifdef CONFIG_NET_POLL_CONTROLLER |
682 | static void ehea_netpoll(struct net_device *dev) | |
683 | { | |
684 | struct ehea_port *port = netdev_priv(dev); | |
bea3348e | 685 | int i; |
8d22c971 | 686 | |
bea3348e SH |
687 | for (i = 0; i < port->num_def_qps; i++) |
688 | netif_rx_schedule(dev, &port->port_res[i].napi); | |
8d22c971 JBT |
689 | } |
690 | #endif | |
691 | ||
7d12e780 | 692 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
693 | { |
694 | struct ehea_port_res *pr = param; | |
18604c54 | 695 | |
bea3348e | 696 | netif_rx_schedule(pr->port->netdev, &pr->napi); |
18604c54 | 697 | |
7a291083 JBT |
698 | return IRQ_HANDLED; |
699 | } | |
700 | ||
7d12e780 | 701 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
702 | { |
703 | struct ehea_port *port = param; | |
704 | struct ehea_eqe *eqe; | |
d2db9eea | 705 | struct ehea_qp *qp; |
7a291083 JBT |
706 | u32 qp_token; |
707 | ||
708 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 709 | |
7a291083 | 710 | while (eqe) { |
7a291083 | 711 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
bb3a6449 TK |
712 | ehea_error("QP aff_err: entry=0x%lx, token=0x%x", |
713 | eqe->entry, qp_token); | |
d2db9eea JBT |
714 | |
715 | qp = port->port_res[qp_token].qp; | |
716 | ehea_error_data(port->adapter, qp->fw_handle); | |
bb3a6449 | 717 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
718 | } |
719 | ||
3bf76b81 | 720 | schedule_work(&port->reset_task); |
d2db9eea | 721 | |
7a291083 JBT |
722 | return IRQ_HANDLED; |
723 | } | |
724 | ||
725 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
726 | int logical_port) | |
727 | { | |
728 | int i; | |
729 | ||
1acf2318 | 730 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 731 | if (adapter->port[i]) |
d1d25aab | 732 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 733 | return adapter->port[i]; |
7a291083 JBT |
734 | return NULL; |
735 | } | |
736 | ||
737 | int ehea_sense_port_attr(struct ehea_port *port) | |
738 | { | |
739 | int ret; | |
740 | u64 hret; | |
741 | struct hcp_ehea_port_cb0 *cb0; | |
742 | ||
a1d261c5 TK |
743 | cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */ |
744 | if (!cb0) { /* ehea_neq_tasklet() */ | |
7a291083 JBT |
745 | ehea_error("no mem for cb0"); |
746 | ret = -ENOMEM; | |
747 | goto out; | |
748 | } | |
749 | ||
750 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
751 | port->logical_port_id, H_PORT_CB0, | |
752 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
753 | cb0); | |
754 | if (hret != H_SUCCESS) { | |
755 | ret = -EIO; | |
756 | goto out_free; | |
757 | } | |
758 | ||
759 | /* MAC address */ | |
760 | port->mac_addr = cb0->port_mac_addr << 16; | |
761 | ||
762 | if (!is_valid_ether_addr((u8*)&port->mac_addr)) { | |
763 | ret = -EADDRNOTAVAIL; | |
764 | goto out_free; | |
765 | } | |
766 | ||
767 | /* Port speed */ | |
768 | switch (cb0->port_speed) { | |
769 | case H_SPEED_10M_H: | |
770 | port->port_speed = EHEA_SPEED_10M; | |
771 | port->full_duplex = 0; | |
772 | break; | |
773 | case H_SPEED_10M_F: | |
774 | port->port_speed = EHEA_SPEED_10M; | |
775 | port->full_duplex = 1; | |
776 | break; | |
777 | case H_SPEED_100M_H: | |
778 | port->port_speed = EHEA_SPEED_100M; | |
779 | port->full_duplex = 0; | |
780 | break; | |
781 | case H_SPEED_100M_F: | |
782 | port->port_speed = EHEA_SPEED_100M; | |
783 | port->full_duplex = 1; | |
784 | break; | |
785 | case H_SPEED_1G_F: | |
786 | port->port_speed = EHEA_SPEED_1G; | |
787 | port->full_duplex = 1; | |
788 | break; | |
789 | case H_SPEED_10G_F: | |
790 | port->port_speed = EHEA_SPEED_10G; | |
791 | port->full_duplex = 1; | |
792 | break; | |
793 | default: | |
794 | port->port_speed = 0; | |
795 | port->full_duplex = 0; | |
796 | break; | |
797 | } | |
798 | ||
e919b593 | 799 | port->autoneg = 1; |
18604c54 | 800 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 801 | |
7a291083 | 802 | /* Number of default QPs */ |
18604c54 JBT |
803 | if (use_mcs) |
804 | port->num_def_qps = cb0->num_default_qps; | |
805 | else | |
806 | port->num_def_qps = 1; | |
7a291083 JBT |
807 | |
808 | if (!port->num_def_qps) { | |
809 | ret = -EINVAL; | |
810 | goto out_free; | |
811 | } | |
812 | ||
18604c54 JBT |
813 | port->num_tx_qps = num_tx_qps; |
814 | ||
815 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
816 | port->num_add_tx_qps = 0; |
817 | else | |
18604c54 | 818 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
819 | |
820 | ret = 0; | |
821 | out_free: | |
822 | if (ret || netif_msg_probe(port)) | |
823 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
824 | kfree(cb0); | |
825 | out: | |
826 | return ret; | |
827 | } | |
828 | ||
829 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
830 | { | |
831 | struct hcp_ehea_port_cb4 *cb4; | |
832 | u64 hret; | |
833 | int ret = 0; | |
834 | ||
a1d261c5 | 835 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
836 | if (!cb4) { |
837 | ehea_error("no mem for cb4"); | |
838 | ret = -ENOMEM; | |
839 | goto out; | |
840 | } | |
841 | ||
842 | cb4->port_speed = port_speed; | |
843 | ||
844 | netif_carrier_off(port->netdev); | |
845 | ||
846 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
847 | port->logical_port_id, | |
848 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
849 | if (hret == H_SUCCESS) { | |
850 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
851 | ||
852 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
853 | port->logical_port_id, | |
854 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
855 | cb4); | |
856 | if (hret == H_SUCCESS) { | |
857 | switch (cb4->port_speed) { | |
858 | case H_SPEED_10M_H: | |
859 | port->port_speed = EHEA_SPEED_10M; | |
860 | port->full_duplex = 0; | |
861 | break; | |
862 | case H_SPEED_10M_F: | |
863 | port->port_speed = EHEA_SPEED_10M; | |
864 | port->full_duplex = 1; | |
865 | break; | |
866 | case H_SPEED_100M_H: | |
867 | port->port_speed = EHEA_SPEED_100M; | |
868 | port->full_duplex = 0; | |
869 | break; | |
870 | case H_SPEED_100M_F: | |
871 | port->port_speed = EHEA_SPEED_100M; | |
872 | port->full_duplex = 1; | |
873 | break; | |
874 | case H_SPEED_1G_F: | |
875 | port->port_speed = EHEA_SPEED_1G; | |
876 | port->full_duplex = 1; | |
877 | break; | |
878 | case H_SPEED_10G_F: | |
879 | port->port_speed = EHEA_SPEED_10G; | |
880 | port->full_duplex = 1; | |
881 | break; | |
882 | default: | |
883 | port->port_speed = 0; | |
884 | port->full_duplex = 0; | |
885 | break; | |
886 | } | |
887 | } else { | |
888 | ehea_error("Failed sensing port speed"); | |
889 | ret = -EIO; | |
890 | } | |
891 | } else { | |
892 | if (hret == H_AUTHORITY) { | |
7674a588 | 893 | ehea_info("Hypervisor denied setting port speed"); |
7a291083 JBT |
894 | ret = -EPERM; |
895 | } else { | |
896 | ret = -EIO; | |
897 | ehea_error("Failed setting port speed"); | |
898 | } | |
899 | } | |
8759cf76 JBT |
900 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
901 | netif_carrier_on(port->netdev); | |
902 | ||
7a291083 JBT |
903 | kfree(cb4); |
904 | out: | |
905 | return ret; | |
906 | } | |
907 | ||
908 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
909 | { | |
910 | int ret; | |
911 | u8 ec; | |
912 | u8 portnum; | |
913 | struct ehea_port *port; | |
914 | ||
915 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
916 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
917 | port = ehea_get_port(adapter, portnum); | |
918 | ||
919 | switch (ec) { | |
920 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
921 | ||
922 | if (!port) { | |
923 | ehea_error("unknown portnum %x", portnum); | |
924 | break; | |
925 | } | |
926 | ||
927 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
928 | if (!netif_carrier_ok(port->netdev)) { | |
1e1675cc | 929 | ret = ehea_sense_port_attr(port); |
7a291083 JBT |
930 | if (ret) { |
931 | ehea_error("failed resensing port " | |
932 | "attributes"); | |
933 | break; | |
934 | } | |
935 | ||
936 | if (netif_msg_link(port)) | |
937 | ehea_info("%s: Logical port up: %dMbps " | |
938 | "%s Duplex", | |
939 | port->netdev->name, | |
940 | port->port_speed, | |
941 | port->full_duplex == | |
942 | 1 ? "Full" : "Half"); | |
943 | ||
944 | netif_carrier_on(port->netdev); | |
945 | netif_wake_queue(port->netdev); | |
946 | } | |
947 | } else | |
948 | if (netif_carrier_ok(port->netdev)) { | |
949 | if (netif_msg_link(port)) | |
950 | ehea_info("%s: Logical port down", | |
951 | port->netdev->name); | |
952 | netif_carrier_off(port->netdev); | |
953 | netif_stop_queue(port->netdev); | |
954 | } | |
955 | ||
956 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 957 | port->phy_link = EHEA_PHY_LINK_UP; |
7a291083 JBT |
958 | if (netif_msg_link(port)) |
959 | ehea_info("%s: Physical port up", | |
960 | port->netdev->name); | |
8759cf76 JBT |
961 | if (prop_carrier_state) |
962 | netif_carrier_on(port->netdev); | |
7a291083 | 963 | } else { |
8759cf76 | 964 | port->phy_link = EHEA_PHY_LINK_DOWN; |
7a291083 JBT |
965 | if (netif_msg_link(port)) |
966 | ehea_info("%s: Physical port down", | |
967 | port->netdev->name); | |
8759cf76 JBT |
968 | if (prop_carrier_state) |
969 | netif_carrier_off(port->netdev); | |
7a291083 JBT |
970 | } |
971 | ||
972 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
973 | ehea_info("External switch port is primary port"); | |
974 | else | |
975 | ehea_info("External switch port is backup port"); | |
976 | ||
977 | break; | |
978 | case EHEA_EC_ADAPTER_MALFUNC: | |
979 | ehea_error("Adapter malfunction"); | |
980 | break; | |
981 | case EHEA_EC_PORT_MALFUNC: | |
982 | ehea_info("Port malfunction: Device: %s", port->netdev->name); | |
983 | netif_carrier_off(port->netdev); | |
984 | netif_stop_queue(port->netdev); | |
985 | break; | |
986 | default: | |
bff0a55f | 987 | ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe); |
7a291083 JBT |
988 | break; |
989 | } | |
990 | } | |
991 | ||
992 | static void ehea_neq_tasklet(unsigned long data) | |
993 | { | |
994 | struct ehea_adapter *adapter = (struct ehea_adapter*)data; | |
995 | struct ehea_eqe *eqe; | |
996 | u64 event_mask; | |
997 | ||
998 | eqe = ehea_poll_eq(adapter->neq); | |
999 | ehea_debug("eqe=%p", eqe); | |
1000 | ||
1001 | while (eqe) { | |
1002 | ehea_debug("*eqe=%lx", eqe->entry); | |
1003 | ehea_parse_eqe(adapter, eqe->entry); | |
1004 | eqe = ehea_poll_eq(adapter->neq); | |
1005 | ehea_debug("next eqe=%p", eqe); | |
1006 | } | |
1007 | ||
1008 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1009 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1010 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1011 | ||
1012 | ehea_h_reset_events(adapter->handle, | |
1013 | adapter->neq->fw_handle, event_mask); | |
1014 | } | |
1015 | ||
7d12e780 | 1016 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1017 | { |
1018 | struct ehea_adapter *adapter = param; | |
1019 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1020 | return IRQ_HANDLED; | |
1021 | } | |
1022 | ||
1023 | ||
1024 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1025 | { | |
1026 | int ret; | |
1027 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1028 | ||
1029 | ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 | |
1030 | - init_attr->act_nr_rwqes_rq2 | |
1031 | - init_attr->act_nr_rwqes_rq3 - 1); | |
1032 | ||
1033 | ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); | |
1034 | ||
1035 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
1036 | ||
1037 | return ret; | |
1038 | } | |
1039 | ||
1040 | static int ehea_reg_interrupts(struct net_device *dev) | |
1041 | { | |
1042 | struct ehea_port *port = netdev_priv(dev); | |
1043 | struct ehea_port_res *pr; | |
1044 | int i, ret; | |
1045 | ||
7a291083 JBT |
1046 | |
1047 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
1048 | dev->name); | |
1049 | ||
6b08f3ae | 1050 | ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
7a291083 | 1051 | ehea_qp_aff_irq_handler, |
38515e90 | 1052 | IRQF_DISABLED, port->int_aff_name, port); |
7a291083 JBT |
1053 | if (ret) { |
1054 | ehea_error("failed registering irq for qp_aff_irq_handler:" | |
1055 | "ist=%X", port->qp_eq->attr.ist1); | |
1056 | goto out_free_qpeq; | |
1057 | } | |
1058 | ||
1059 | if (netif_msg_ifup(port)) | |
1060 | ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " | |
1061 | "registered", port->qp_eq->attr.ist1); | |
1062 | ||
18604c54 | 1063 | |
7a291083 JBT |
1064 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1065 | pr = &port->port_res[i]; | |
1066 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 | 1067 | "%s-queue%d", dev->name, i); |
6b08f3ae | 1068 | ret = ibmebus_request_irq(pr->eq->attr.ist1, |
18604c54 | 1069 | ehea_recv_irq_handler, |
38515e90 | 1070 | IRQF_DISABLED, pr->int_send_name, |
7a291083 JBT |
1071 | pr); |
1072 | if (ret) { | |
18604c54 | 1073 | ehea_error("failed registering irq for ehea_queue " |
7a291083 | 1074 | "port_res_nr:%d, ist=%X", i, |
18604c54 | 1075 | pr->eq->attr.ist1); |
7a291083 JBT |
1076 | goto out_free_req; |
1077 | } | |
1078 | if (netif_msg_ifup(port)) | |
18604c54 JBT |
1079 | ehea_info("irq_handle 0x%X for function ehea_queue_int " |
1080 | "%d registered", pr->eq->attr.ist1, i); | |
7a291083 JBT |
1081 | } |
1082 | out: | |
1083 | return ret; | |
1084 | ||
18604c54 | 1085 | |
7a291083 JBT |
1086 | out_free_req: |
1087 | while (--i >= 0) { | |
18604c54 | 1088 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1089 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1090 | } |
18604c54 | 1091 | |
7a291083 | 1092 | out_free_qpeq: |
6b08f3ae | 1093 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1094 | i = port->num_def_qps; |
18604c54 | 1095 | |
7a291083 | 1096 | goto out; |
18604c54 | 1097 | |
7a291083 JBT |
1098 | } |
1099 | ||
1100 | static void ehea_free_interrupts(struct net_device *dev) | |
1101 | { | |
1102 | struct ehea_port *port = netdev_priv(dev); | |
1103 | struct ehea_port_res *pr; | |
1104 | int i; | |
1105 | ||
1106 | /* send */ | |
18604c54 | 1107 | |
7a291083 JBT |
1108 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1109 | pr = &port->port_res[i]; | |
6b08f3ae | 1110 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
7a291083 JBT |
1111 | if (netif_msg_intr(port)) |
1112 | ehea_info("free send irq for res %d with handle 0x%X", | |
18604c54 | 1113 | i, pr->eq->attr.ist1); |
7a291083 JBT |
1114 | } |
1115 | ||
1116 | /* associated events */ | |
6b08f3ae | 1117 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 JBT |
1118 | if (netif_msg_intr(port)) |
1119 | ehea_info("associated event interrupt for handle 0x%X freed", | |
1120 | port->qp_eq->attr.ist1); | |
1121 | } | |
1122 | ||
1123 | static int ehea_configure_port(struct ehea_port *port) | |
1124 | { | |
1125 | int ret, i; | |
1126 | u64 hret, mask; | |
1127 | struct hcp_ehea_port_cb0 *cb0; | |
1128 | ||
1129 | ret = -ENOMEM; | |
a1d261c5 | 1130 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1131 | if (!cb0) |
1132 | goto out; | |
1133 | ||
1134 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1135 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1136 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1137 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1138 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1139 | PXLY_RC_VLAN_FILTER) | |
1140 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1141 | ||
18604c54 JBT |
1142 | for (i = 0; i < port->num_mcs; i++) |
1143 | if (use_mcs) | |
1144 | cb0->default_qpn_arr[i] = | |
1145 | port->port_res[i].qp->init_attr.qp_nr; | |
1146 | else | |
1147 | cb0->default_qpn_arr[i] = | |
1148 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1149 | |
7a291083 JBT |
1150 | if (netif_msg_ifup(port)) |
1151 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1152 | ||
1153 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1154 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1155 | ||
1156 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1157 | port->logical_port_id, | |
1158 | H_PORT_CB0, mask, cb0); | |
1159 | ret = -EIO; | |
1160 | if (hret != H_SUCCESS) | |
1161 | goto out_free; | |
1162 | ||
1163 | ret = 0; | |
1164 | ||
1165 | out_free: | |
1166 | kfree(cb0); | |
1167 | out: | |
1168 | return ret; | |
1169 | } | |
1170 | ||
e542aa6b | 1171 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1172 | { |
e542aa6b | 1173 | int ret; |
7a291083 JBT |
1174 | struct ehea_adapter *adapter = pr->port->adapter; |
1175 | ||
e542aa6b JBT |
1176 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1177 | if (ret) | |
7a291083 JBT |
1178 | goto out; |
1179 | ||
e542aa6b JBT |
1180 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1181 | if (ret) | |
1182 | goto out_free; | |
7a291083 JBT |
1183 | |
1184 | return 0; | |
1185 | ||
e542aa6b JBT |
1186 | out_free: |
1187 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1188 | out: |
e542aa6b | 1189 | ehea_error("Generating SMRS failed\n"); |
7a291083 JBT |
1190 | return -EIO; |
1191 | } | |
1192 | ||
e542aa6b | 1193 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1194 | { |
e542aa6b JBT |
1195 | if ((ehea_rem_mr(&pr->send_mr)) |
1196 | || (ehea_rem_mr(&pr->recv_mr))) | |
1197 | return -EIO; | |
1198 | else | |
1199 | return 0; | |
7a291083 JBT |
1200 | } |
1201 | ||
1202 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1203 | { | |
1204 | int arr_size = sizeof(void*) * max_q_entries; | |
1205 | ||
1206 | q_skba->arr = vmalloc(arr_size); | |
1207 | if (!q_skba->arr) | |
1208 | return -ENOMEM; | |
1209 | ||
1210 | memset(q_skba->arr, 0, arr_size); | |
1211 | ||
1212 | q_skba->len = max_q_entries; | |
1213 | q_skba->index = 0; | |
1214 | q_skba->os_skbs = 0; | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1220 | struct port_res_cfg *pr_cfg, int queue_token) | |
1221 | { | |
1222 | struct ehea_adapter *adapter = port->adapter; | |
1223 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1224 | struct ehea_qp_init_attr *init_attr = NULL; | |
1225 | int ret = -EIO; | |
1226 | ||
1227 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1228 | ||
1229 | pr->port = port; | |
7a291083 JBT |
1230 | spin_lock_init(&pr->xmit_lock); |
1231 | spin_lock_init(&pr->netif_queue); | |
1232 | ||
18604c54 JBT |
1233 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1234 | if (!pr->eq) { | |
1235 | ehea_error("create_eq failed (eq)"); | |
7a291083 JBT |
1236 | goto out_free; |
1237 | } | |
1238 | ||
1239 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1240 | pr->eq->fw_handle, |
7a291083 JBT |
1241 | port->logical_port_id); |
1242 | if (!pr->recv_cq) { | |
1243 | ehea_error("create_cq failed (cq_recv)"); | |
1244 | goto out_free; | |
1245 | } | |
1246 | ||
1247 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1248 | pr->eq->fw_handle, |
7a291083 JBT |
1249 | port->logical_port_id); |
1250 | if (!pr->send_cq) { | |
1251 | ehea_error("create_cq failed (cq_send)"); | |
1252 | goto out_free; | |
1253 | } | |
1254 | ||
1255 | if (netif_msg_ifup(port)) | |
1256 | ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", | |
1257 | pr->send_cq->attr.act_nr_of_cqes, | |
1258 | pr->recv_cq->attr.act_nr_of_cqes); | |
1259 | ||
1260 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1261 | if (!init_attr) { | |
1262 | ret = -ENOMEM; | |
1263 | ehea_error("no mem for ehea_qp_init_attr"); | |
1264 | goto out_free; | |
1265 | } | |
1266 | ||
1267 | init_attr->low_lat_rq1 = 1; | |
1268 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1269 | init_attr->rq_count = 3; | |
1270 | init_attr->qp_token = queue_token; | |
1271 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1272 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1273 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1274 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1275 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1276 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1277 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1278 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1279 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1280 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1281 | init_attr->port_nr = port->logical_port_id; | |
1282 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1283 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1284 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1285 | ||
1286 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1287 | if (!pr->qp) { | |
1288 | ehea_error("create_qp failed"); | |
1289 | ret = -EIO; | |
1290 | goto out_free; | |
1291 | } | |
1292 | ||
1293 | if (netif_msg_ifup(port)) | |
1294 | ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " | |
1295 | "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, | |
1296 | init_attr->act_nr_send_wqes, | |
1297 | init_attr->act_nr_rwqes_rq1, | |
1298 | init_attr->act_nr_rwqes_rq2, | |
1299 | init_attr->act_nr_rwqes_rq3); | |
1300 | ||
1301 | ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); | |
1302 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); | |
1303 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1304 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1305 | if (ret) | |
1306 | goto out_free; | |
1307 | ||
1308 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1309 | if (ehea_gen_smrs(pr) != 0) { | |
1310 | ret = -EIO; | |
1311 | goto out_free; | |
1312 | } | |
18604c54 | 1313 | |
7a291083 JBT |
1314 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1315 | ||
1316 | kfree(init_attr); | |
18604c54 | 1317 | |
bea3348e | 1318 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1319 | |
d4dc4ec9 JBT |
1320 | pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
1321 | pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; | |
1322 | pr->lro_mgr.lro_arr = pr->lro_desc; | |
1323 | pr->lro_mgr.get_skb_header = get_skb_hdr; | |
1324 | pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; | |
1325 | pr->lro_mgr.dev = port->netdev; | |
1326 | pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1327 | pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1328 | ||
7a291083 JBT |
1329 | ret = 0; |
1330 | goto out; | |
1331 | ||
1332 | out_free: | |
1333 | kfree(init_attr); | |
1334 | vfree(pr->sq_skba.arr); | |
1335 | vfree(pr->rq1_skba.arr); | |
1336 | vfree(pr->rq2_skba.arr); | |
1337 | vfree(pr->rq3_skba.arr); | |
1338 | ehea_destroy_qp(pr->qp); | |
1339 | ehea_destroy_cq(pr->send_cq); | |
1340 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1341 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1342 | out: |
1343 | return ret; | |
1344 | } | |
1345 | ||
1346 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1347 | { | |
1348 | int ret, i; | |
1349 | ||
1350 | ret = ehea_destroy_qp(pr->qp); | |
1351 | ||
1352 | if (!ret) { | |
1353 | ehea_destroy_cq(pr->send_cq); | |
1354 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1355 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1356 | |
1357 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1358 | if (pr->rq1_skba.arr[i]) | |
1359 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1360 | ||
1361 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1362 | if (pr->rq2_skba.arr[i]) | |
1363 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1364 | ||
1365 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1366 | if (pr->rq3_skba.arr[i]) | |
1367 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1368 | ||
1369 | for (i = 0; i < pr->sq_skba.len; i++) | |
1370 | if (pr->sq_skba.arr[i]) | |
1371 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1372 | ||
1373 | vfree(pr->rq1_skba.arr); | |
1374 | vfree(pr->rq2_skba.arr); | |
1375 | vfree(pr->rq3_skba.arr); | |
1376 | vfree(pr->sq_skba.arr); | |
1377 | ret = ehea_rem_smrs(pr); | |
1378 | } | |
1379 | return ret; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * The write_* functions store information in swqe which is used by | |
1384 | * the hardware to calculate the ip/tcp/udp checksum | |
1385 | */ | |
1386 | ||
1387 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1388 | const struct sk_buff *skb) | |
1389 | { | |
eddc9ec5 | 1390 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1391 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1392 | } |
1393 | ||
1394 | static inline void write_tcp_offset_end(struct ehea_swqe *swqe, | |
1395 | const struct sk_buff *skb) | |
1396 | { | |
1397 | swqe->tcp_offset = | |
1398 | (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); | |
1399 | ||
1400 | swqe->tcp_end = (u16)skb->len - 1; | |
1401 | } | |
1402 | ||
1403 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1404 | const struct sk_buff *skb) | |
1405 | { | |
1406 | swqe->tcp_offset = | |
1407 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1408 | ||
1409 | swqe->tcp_end = (u16)skb->len - 1; | |
1410 | } | |
1411 | ||
1412 | ||
1413 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1414 | struct ehea_swqe *swqe, u32 lkey) | |
1415 | { | |
1416 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1417 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1418 | int skb_data_size = skb->len - skb->data_len; | |
1419 | int headersize; | |
7a291083 JBT |
1420 | |
1421 | /* Packet is TCP with TSO enabled */ | |
1422 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1423 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1424 | /* copy only eth/ip/tcp headers to immediate data and | |
1425 | * the rest of skb->data to sg1entry | |
1426 | */ | |
ab6a5bb6 | 1427 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 JBT |
1428 | |
1429 | skb_data_size = skb->len - skb->data_len; | |
1430 | ||
1431 | if (skb_data_size >= headersize) { | |
1432 | /* copy immediate data */ | |
d626f62b | 1433 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1434 | swqe->immediate_data_length = headersize; |
1435 | ||
1436 | if (skb_data_size > headersize) { | |
1437 | /* set sg1entry data */ | |
1438 | sg1entry->l_key = lkey; | |
1439 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1440 | sg1entry->vaddr = |
1441 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1442 | swqe->descriptors++; |
1443 | } | |
1444 | } else | |
1445 | ehea_error("cannot handle fragmented headers"); | |
1446 | } | |
1447 | ||
1448 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1449 | struct ehea_swqe *swqe, u32 lkey) | |
1450 | { | |
1451 | int skb_data_size = skb->len - skb->data_len; | |
1452 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1453 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1454 | |
1455 | /* Packet is any nonTSO type | |
1456 | * | |
1457 | * Copy as much as possible skb->data to immediate data and | |
1458 | * the rest to sg1entry | |
1459 | */ | |
1460 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1461 | /* copy immediate data */ | |
d626f62b | 1462 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1463 | |
1464 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1465 | ||
1466 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1467 | /* copy sg1entry data */ | |
1468 | sg1entry->l_key = lkey; | |
1469 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1470 | sg1entry->vaddr = |
1471 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1472 | swqe->descriptors++; |
1473 | } | |
1474 | } else { | |
d626f62b | 1475 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1476 | swqe->immediate_data_length = skb_data_size; |
1477 | } | |
1478 | } | |
1479 | ||
1480 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1481 | struct ehea_swqe *swqe, u32 lkey) | |
1482 | { | |
1483 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1484 | skb_frag_t *frag; | |
1485 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1486 | |
1487 | nfrags = skb_shinfo(skb)->nr_frags; | |
1488 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1489 | sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list; | |
1490 | swqe->descriptors = 0; | |
1491 | sg1entry_contains_frag_data = 0; | |
1492 | ||
1493 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1494 | write_swqe2_TSO(skb, swqe, lkey); | |
1495 | else | |
1496 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1497 | ||
1498 | /* write descriptors */ | |
1499 | if (nfrags > 0) { | |
1500 | if (swqe->descriptors == 0) { | |
1501 | /* sg1entry not yet used */ | |
1502 | frag = &skb_shinfo(skb)->frags[0]; | |
1503 | ||
1504 | /* copy sg1entry data */ | |
1505 | sg1entry->l_key = lkey; | |
1506 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1507 | sg1entry->vaddr = |
1508 | ehea_map_vaddr(page_address(frag->page) | |
1509 | + frag->page_offset); | |
7a291083 JBT |
1510 | swqe->descriptors++; |
1511 | sg1entry_contains_frag_data = 1; | |
1512 | } | |
1513 | ||
1514 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1515 | ||
1516 | frag = &skb_shinfo(skb)->frags[i]; | |
1517 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1518 | ||
1519 | sgentry->l_key = lkey; | |
1520 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1521 | sgentry->vaddr = |
1522 | ehea_map_vaddr(page_address(frag->page) | |
1523 | + frag->page_offset); | |
7a291083 JBT |
1524 | swqe->descriptors++; |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | ||
1529 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1530 | { | |
1531 | int ret = 0; | |
1532 | u64 hret; | |
1533 | u8 reg_type; | |
1534 | ||
1535 | /* De/Register untagged packets */ | |
1536 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1537 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1538 | port->logical_port_id, | |
1539 | reg_type, port->mac_addr, 0, hcallid); | |
1540 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1541 | ehea_error("%sregistering bc address failed (tagged)", |
1542 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1543 | ret = -EIO; |
1544 | goto out_herr; | |
1545 | } | |
1546 | ||
1547 | /* De/Register VLAN packets */ | |
1548 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1549 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1550 | port->logical_port_id, | |
1551 | reg_type, port->mac_addr, 0, hcallid); | |
1552 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1553 | ehea_error("%sregistering bc address failed (vlan)", |
1554 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1555 | ret = -EIO; |
1556 | } | |
1557 | out_herr: | |
1558 | return ret; | |
1559 | } | |
1560 | ||
1561 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1562 | { | |
1563 | struct ehea_port *port = netdev_priv(dev); | |
1564 | struct sockaddr *mac_addr = sa; | |
1565 | struct hcp_ehea_port_cb0 *cb0; | |
1566 | int ret; | |
1567 | u64 hret; | |
1568 | ||
1569 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1570 | ret = -EADDRNOTAVAIL; | |
1571 | goto out; | |
1572 | } | |
1573 | ||
a1d261c5 | 1574 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1575 | if (!cb0) { |
1576 | ehea_error("no mem for cb0"); | |
1577 | ret = -ENOMEM; | |
1578 | goto out; | |
1579 | } | |
1580 | ||
1581 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1582 | ||
1583 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1584 | ||
1585 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1586 | port->logical_port_id, H_PORT_CB0, | |
1587 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1588 | if (hret != H_SUCCESS) { | |
1589 | ret = -EIO; | |
1590 | goto out_free; | |
1591 | } | |
1592 | ||
1593 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1594 | ||
1595 | /* Deregister old MAC in pHYP */ | |
1596 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1597 | if (ret) | |
1598 | goto out_free; | |
1599 | ||
1600 | port->mac_addr = cb0->port_mac_addr << 16; | |
1601 | ||
1602 | /* Register new MAC in pHYP */ | |
1603 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1604 | if (ret) | |
1605 | goto out_free; | |
1606 | ||
1607 | ret = 0; | |
1608 | out_free: | |
1609 | kfree(cb0); | |
1610 | out: | |
1611 | return ret; | |
1612 | } | |
1613 | ||
1614 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1615 | { | |
7674a588 TK |
1616 | if (hret == H_AUTHORITY) |
1617 | ehea_info("Hypervisor denied %sabling promiscuous mode", | |
1618 | enable == 1 ? "en" : "dis"); | |
1619 | else | |
1620 | ehea_error("failed %sabling promiscuous mode", | |
1621 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1622 | } |
1623 | ||
1624 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1625 | { | |
1626 | struct ehea_port *port = netdev_priv(dev); | |
1627 | struct hcp_ehea_port_cb7 *cb7; | |
1628 | u64 hret; | |
1629 | ||
1630 | if ((enable && port->promisc) || (!enable && !port->promisc)) | |
1631 | return; | |
1632 | ||
a1d261c5 | 1633 | cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
7a291083 JBT |
1634 | if (!cb7) { |
1635 | ehea_error("no mem for cb7"); | |
1636 | goto out; | |
1637 | } | |
1638 | ||
1639 | /* Modify Pxs_DUCQPN in CB7 */ | |
1640 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1641 | ||
1642 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1643 | port->logical_port_id, | |
1644 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1645 | if (hret) { | |
1646 | ehea_promiscuous_error(hret, enable); | |
1647 | goto out; | |
1648 | } | |
1649 | ||
1650 | port->promisc = enable; | |
1651 | out: | |
1652 | kfree(cb7); | |
1653 | return; | |
1654 | } | |
1655 | ||
1656 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1657 | u32 hcallid) | |
1658 | { | |
1659 | u64 hret; | |
1660 | u8 reg_type; | |
1661 | ||
1662 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1663 | | EHEA_BCMC_UNTAGGED; | |
1664 | ||
1665 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1666 | port->logical_port_id, | |
1667 | reg_type, mc_mac_addr, 0, hcallid); | |
1668 | if (hret) | |
1669 | goto out; | |
1670 | ||
1671 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1672 | | EHEA_BCMC_VLANID_ALL; | |
1673 | ||
1674 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1675 | port->logical_port_id, | |
1676 | reg_type, mc_mac_addr, 0, hcallid); | |
1677 | out: | |
1678 | return hret; | |
1679 | } | |
1680 | ||
1681 | static int ehea_drop_multicast_list(struct net_device *dev) | |
1682 | { | |
1683 | struct ehea_port *port = netdev_priv(dev); | |
1684 | struct ehea_mc_list *mc_entry = port->mc_list; | |
1685 | struct list_head *pos; | |
1686 | struct list_head *temp; | |
1687 | int ret = 0; | |
1688 | u64 hret; | |
1689 | ||
1690 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
1691 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
1692 | ||
1693 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
1694 | H_DEREG_BCMC); | |
1695 | if (hret) { | |
1696 | ehea_error("failed deregistering mcast MAC"); | |
1697 | ret = -EIO; | |
1698 | } | |
1699 | ||
1700 | list_del(pos); | |
1701 | kfree(mc_entry); | |
1702 | } | |
1703 | return ret; | |
1704 | } | |
1705 | ||
1706 | static void ehea_allmulti(struct net_device *dev, int enable) | |
1707 | { | |
1708 | struct ehea_port *port = netdev_priv(dev); | |
1709 | u64 hret; | |
1710 | ||
1711 | if (!port->allmulti) { | |
1712 | if (enable) { | |
1713 | /* Enable ALLMULTI */ | |
1714 | ehea_drop_multicast_list(dev); | |
1715 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
1716 | if (!hret) | |
1717 | port->allmulti = 1; | |
1718 | else | |
1719 | ehea_error("failed enabling IFF_ALLMULTI"); | |
1720 | } | |
1721 | } else | |
1722 | if (!enable) { | |
1723 | /* Disable ALLMULTI */ | |
1724 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
1725 | if (!hret) | |
1726 | port->allmulti = 0; | |
1727 | else | |
1728 | ehea_error("failed disabling IFF_ALLMULTI"); | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr) | |
1733 | { | |
1734 | struct ehea_mc_list *ehea_mcl_entry; | |
1735 | u64 hret; | |
1736 | ||
1e1675cc | 1737 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 JBT |
1738 | if (!ehea_mcl_entry) { |
1739 | ehea_error("no mem for mcl_entry"); | |
1740 | return; | |
1741 | } | |
1742 | ||
1743 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
1744 | ||
1745 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
1746 | ||
1747 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
1748 | H_REG_BCMC); | |
1749 | if (!hret) | |
1750 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
1751 | else { | |
1752 | ehea_error("failed registering mcast MAC"); | |
1753 | kfree(ehea_mcl_entry); | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | static void ehea_set_multicast_list(struct net_device *dev) | |
1758 | { | |
1759 | struct ehea_port *port = netdev_priv(dev); | |
1760 | struct dev_mc_list *k_mcl_entry; | |
1761 | int ret, i; | |
1762 | ||
1763 | if (dev->flags & IFF_PROMISC) { | |
1764 | ehea_promiscuous(dev, 1); | |
1765 | return; | |
1766 | } | |
1767 | ehea_promiscuous(dev, 0); | |
1768 | ||
1769 | if (dev->flags & IFF_ALLMULTI) { | |
1770 | ehea_allmulti(dev, 1); | |
1771 | return; | |
1772 | } | |
1773 | ehea_allmulti(dev, 0); | |
1774 | ||
1775 | if (dev->mc_count) { | |
1776 | ret = ehea_drop_multicast_list(dev); | |
1777 | if (ret) { | |
1778 | /* Dropping the current multicast list failed. | |
1779 | * Enabling ALL_MULTI is the best we can do. | |
1780 | */ | |
1781 | ehea_allmulti(dev, 1); | |
1782 | } | |
1783 | ||
1784 | if (dev->mc_count > port->adapter->max_mc_mac) { | |
1785 | ehea_info("Mcast registration limit reached (0x%lx). " | |
1786 | "Use ALLMULTI!", | |
1787 | port->adapter->max_mc_mac); | |
1788 | goto out; | |
1789 | } | |
1790 | ||
1791 | for (i = 0, k_mcl_entry = dev->mc_list; | |
1792 | i < dev->mc_count; | |
1793 | i++, k_mcl_entry = k_mcl_entry->next) { | |
1794 | ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); | |
1795 | } | |
1796 | } | |
1797 | out: | |
1798 | return; | |
1799 | } | |
1800 | ||
1801 | static int ehea_change_mtu(struct net_device *dev, int new_mtu) | |
1802 | { | |
1803 | if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) | |
1804 | return -EINVAL; | |
1805 | dev->mtu = new_mtu; | |
1806 | return 0; | |
1807 | } | |
1808 | ||
1809 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
1810 | struct ehea_swqe *swqe, u32 lkey) | |
1811 | { | |
1812 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1813 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1814 | |
7a291083 JBT |
1815 | /* IPv4 */ |
1816 | swqe->tx_control |= EHEA_SWQE_CRC | |
1817 | | EHEA_SWQE_IP_CHECKSUM | |
1818 | | EHEA_SWQE_TCP_CHECKSUM | |
1819 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1820 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1821 | ||
1822 | write_ip_start_end(swqe, skb); | |
1823 | ||
eddc9ec5 | 1824 | if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1825 | if ((iph->frag_off & IP_MF) |
1826 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1827 | /* IP fragment, so don't change cs */ |
1828 | swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; | |
1829 | else | |
1830 | write_udp_offset_end(swqe, skb); | |
eddc9ec5 | 1831 | } else if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1832 | write_tcp_offset_end(swqe, skb); |
1833 | } | |
1834 | ||
1835 | /* icmp (big data) and ip segmentation packets (all other ip | |
1836 | packets) do not require any special handling */ | |
1837 | ||
1838 | } else { | |
1839 | /* Other Ethernet Protocol */ | |
1840 | swqe->tx_control |= EHEA_SWQE_CRC | |
1841 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1842 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1843 | } | |
1844 | ||
1845 | write_swqe2_data(skb, dev, swqe, lkey); | |
1846 | } | |
1847 | ||
1848 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
1849 | struct ehea_swqe *swqe) | |
1850 | { | |
1851 | int nfrags = skb_shinfo(skb)->nr_frags; | |
1852 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; | |
1853 | skb_frag_t *frag; | |
1854 | int i; | |
1855 | ||
1856 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1857 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1858 | |
7a291083 JBT |
1859 | /* IPv4 */ |
1860 | write_ip_start_end(swqe, skb); | |
1861 | ||
eddc9ec5 | 1862 | if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1863 | swqe->tx_control |= EHEA_SWQE_CRC |
1864 | | EHEA_SWQE_IP_CHECKSUM | |
1865 | | EHEA_SWQE_TCP_CHECKSUM | |
1866 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1867 | ||
1868 | write_tcp_offset_end(swqe, skb); | |
1869 | ||
eddc9ec5 | 1870 | } else if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1871 | if ((iph->frag_off & IP_MF) |
1872 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1873 | /* IP fragment, so don't change cs */ |
1874 | swqe->tx_control |= EHEA_SWQE_CRC | |
1875 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1876 | else { | |
1877 | swqe->tx_control |= EHEA_SWQE_CRC | |
1878 | | EHEA_SWQE_IP_CHECKSUM | |
1879 | | EHEA_SWQE_TCP_CHECKSUM | |
1880 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1881 | ||
1882 | write_udp_offset_end(swqe, skb); | |
1883 | } | |
1884 | } else { | |
1885 | /* icmp (big data) and | |
1886 | ip segmentation packets (all other ip packets) */ | |
1887 | swqe->tx_control |= EHEA_SWQE_CRC | |
1888 | | EHEA_SWQE_IP_CHECKSUM | |
1889 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1890 | } | |
1891 | } else { | |
1892 | /* Other Ethernet Protocol */ | |
1893 | swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; | |
1894 | } | |
1895 | /* copy (immediate) data */ | |
1896 | if (nfrags == 0) { | |
1897 | /* data is in a single piece */ | |
d626f62b | 1898 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
7a291083 JBT |
1899 | } else { |
1900 | /* first copy data from the skb->data buffer ... */ | |
d626f62b ACM |
1901 | skb_copy_from_linear_data(skb, imm_data, |
1902 | skb->len - skb->data_len); | |
7a291083 JBT |
1903 | imm_data += skb->len - skb->data_len; |
1904 | ||
1905 | /* ... then copy data from the fragments */ | |
1906 | for (i = 0; i < nfrags; i++) { | |
1907 | frag = &skb_shinfo(skb)->frags[i]; | |
1908 | memcpy(imm_data, | |
1909 | page_address(frag->page) + frag->page_offset, | |
1910 | frag->size); | |
1911 | imm_data += frag->size; | |
1912 | } | |
1913 | } | |
1914 | swqe->immediate_data_length = skb->len; | |
1915 | dev_kfree_skb(skb); | |
1916 | } | |
1917 | ||
18604c54 JBT |
1918 | static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
1919 | { | |
1920 | struct tcphdr *tcp; | |
1921 | u32 tmp; | |
1922 | ||
1923 | if ((skb->protocol == htons(ETH_P_IP)) && | |
88ca2d07 TK |
1924 | (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
1925 | tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4)); | |
18604c54 | 1926 | tmp = (tcp->source + (tcp->dest << 16)) % 31; |
88ca2d07 | 1927 | tmp += ip_hdr(skb)->daddr % 31; |
18604c54 JBT |
1928 | return tmp % num_qps; |
1929 | } | |
1930 | else | |
1931 | return 0; | |
1932 | } | |
1933 | ||
7a291083 JBT |
1934 | static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1935 | { | |
1936 | struct ehea_port *port = netdev_priv(dev); | |
1937 | struct ehea_swqe *swqe; | |
1938 | unsigned long flags; | |
1939 | u32 lkey; | |
1940 | int swqe_index; | |
18604c54 JBT |
1941 | struct ehea_port_res *pr; |
1942 | ||
1943 | pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; | |
1944 | ||
18604c54 JBT |
1945 | if (!spin_trylock(&pr->xmit_lock)) |
1946 | return NETDEV_TX_BUSY; | |
1947 | ||
1948 | if (pr->queue_stopped) { | |
1949 | spin_unlock(&pr->xmit_lock); | |
1950 | return NETDEV_TX_BUSY; | |
1951 | } | |
7a291083 JBT |
1952 | |
1953 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
1954 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
1955 | atomic_dec(&pr->swqe_avail); | |
1956 | ||
1957 | if (skb->len <= SWQE3_MAX_IMM) { | |
1958 | u32 sig_iv = port->sig_comp_iv; | |
1959 | u32 swqe_num = pr->swqe_id_counter; | |
1960 | ehea_xmit3(skb, dev, swqe); | |
1961 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
1962 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
1963 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
1964 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
1965 | sig_iv); | |
1966 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
1967 | pr->swqe_ll_count = 0; | |
1968 | } else | |
1969 | pr->swqe_ll_count += 1; | |
1970 | } else { | |
1971 | swqe->wr_id = | |
1972 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
1973 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 1974 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
1975 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
1976 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
1977 | ||
1978 | pr->sq_skba.index++; | |
1979 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
1980 | ||
1981 | lkey = pr->send_mr.lkey; | |
1982 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 1983 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
1984 | } |
1985 | pr->swqe_id_counter += 1; | |
1986 | ||
1987 | if (port->vgrp && vlan_tx_tag_present(skb)) { | |
1988 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; | |
1989 | swqe->vlan_tag = vlan_tx_tag_get(skb); | |
1990 | } | |
1991 | ||
1992 | if (netif_msg_tx_queued(port)) { | |
1993 | ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); | |
bff0a55f | 1994 | ehea_dump(swqe, 512, "swqe"); |
7a291083 JBT |
1995 | } |
1996 | ||
2c69448b JBT |
1997 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
1998 | netif_stop_queue(dev); | |
1999 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2000 | } | |
44c82152 | 2001 | |
7a291083 | 2002 | ehea_post_swqe(pr->qp, swqe); |
7a291083 JBT |
2003 | |
2004 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
2005 | spin_lock_irqsave(&pr->netif_queue, flags); | |
2006 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
acbddb59 | 2007 | pr->p_stats.queue_stopped++; |
7a291083 JBT |
2008 | netif_stop_queue(dev); |
2009 | pr->queue_stopped = 1; | |
2010 | } | |
2011 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
2012 | } | |
2013 | dev->trans_start = jiffies; | |
2014 | spin_unlock(&pr->xmit_lock); | |
2c69448b | 2015 | |
7a291083 JBT |
2016 | return NETDEV_TX_OK; |
2017 | } | |
2018 | ||
2019 | static void ehea_vlan_rx_register(struct net_device *dev, | |
2020 | struct vlan_group *grp) | |
2021 | { | |
2022 | struct ehea_port *port = netdev_priv(dev); | |
2023 | struct ehea_adapter *adapter = port->adapter; | |
2024 | struct hcp_ehea_port_cb1 *cb1; | |
2025 | u64 hret; | |
2026 | ||
2027 | port->vgrp = grp; | |
2028 | ||
a1d261c5 | 2029 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2030 | if (!cb1) { |
2031 | ehea_error("no mem for cb1"); | |
2032 | goto out; | |
2033 | } | |
2034 | ||
dec590c1 | 2035 | memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); |
7a291083 JBT |
2036 | |
2037 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2038 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2039 | if (hret != H_SUCCESS) | |
2040 | ehea_error("modify_ehea_port failed"); | |
2041 | ||
2042 | kfree(cb1); | |
2043 | out: | |
2044 | return; | |
2045 | } | |
2046 | ||
2047 | static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
2048 | { | |
2049 | struct ehea_port *port = netdev_priv(dev); | |
2050 | struct ehea_adapter *adapter = port->adapter; | |
2051 | struct hcp_ehea_port_cb1 *cb1; | |
2052 | int index; | |
2053 | u64 hret; | |
2054 | ||
a1d261c5 | 2055 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2056 | if (!cb1) { |
2057 | ehea_error("no mem for cb1"); | |
2058 | goto out; | |
2059 | } | |
2060 | ||
2061 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2062 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2063 | if (hret != H_SUCCESS) { | |
2064 | ehea_error("query_ehea_port failed"); | |
2065 | goto out; | |
2066 | } | |
2067 | ||
2068 | index = (vid / 64); | |
dec590c1 | 2069 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2070 | |
2071 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2072 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2073 | if (hret != H_SUCCESS) | |
2074 | ehea_error("modify_ehea_port failed"); | |
2075 | out: | |
2076 | kfree(cb1); | |
2077 | return; | |
2078 | } | |
2079 | ||
2080 | static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
2081 | { | |
2082 | struct ehea_port *port = netdev_priv(dev); | |
2083 | struct ehea_adapter *adapter = port->adapter; | |
2084 | struct hcp_ehea_port_cb1 *cb1; | |
2085 | int index; | |
2086 | u64 hret; | |
2087 | ||
5c15bdec | 2088 | vlan_group_set_device(port->vgrp, vid, NULL); |
7a291083 | 2089 | |
a1d261c5 | 2090 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2091 | if (!cb1) { |
2092 | ehea_error("no mem for cb1"); | |
2093 | goto out; | |
2094 | } | |
2095 | ||
2096 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2097 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2098 | if (hret != H_SUCCESS) { | |
2099 | ehea_error("query_ehea_port failed"); | |
2100 | goto out; | |
2101 | } | |
2102 | ||
2103 | index = (vid / 64); | |
dec590c1 | 2104 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2105 | |
2106 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2107 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2108 | if (hret != H_SUCCESS) | |
2109 | ehea_error("modify_ehea_port failed"); | |
2110 | out: | |
2111 | kfree(cb1); | |
2112 | return; | |
2113 | } | |
2114 | ||
2115 | int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) | |
2116 | { | |
2117 | int ret = -EIO; | |
2118 | u64 hret; | |
2119 | u16 dummy16 = 0; | |
2120 | u64 dummy64 = 0; | |
2121 | struct hcp_modify_qp_cb0* cb0; | |
2122 | ||
a1d261c5 | 2123 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2124 | if (!cb0) { |
2125 | ret = -ENOMEM; | |
2126 | goto out; | |
2127 | } | |
2128 | ||
2129 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2130 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2131 | if (hret != H_SUCCESS) { | |
2132 | ehea_error("query_ehea_qp failed (1)"); | |
2133 | goto out; | |
2134 | } | |
2135 | ||
2136 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2137 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2138 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2139 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2140 | if (hret != H_SUCCESS) { | |
2141 | ehea_error("modify_ehea_qp failed (1)"); | |
2142 | goto out; | |
2143 | } | |
2144 | ||
2145 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2146 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2147 | if (hret != H_SUCCESS) { | |
2148 | ehea_error("query_ehea_qp failed (2)"); | |
2149 | goto out; | |
2150 | } | |
2151 | ||
2152 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2153 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2154 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2155 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2156 | if (hret != H_SUCCESS) { | |
2157 | ehea_error("modify_ehea_qp failed (2)"); | |
2158 | goto out; | |
2159 | } | |
2160 | ||
2161 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2162 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2163 | if (hret != H_SUCCESS) { | |
2164 | ehea_error("query_ehea_qp failed (3)"); | |
2165 | goto out; | |
2166 | } | |
2167 | ||
2168 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2169 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2170 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2171 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2172 | if (hret != H_SUCCESS) { | |
2173 | ehea_error("modify_ehea_qp failed (3)"); | |
2174 | goto out; | |
2175 | } | |
2176 | ||
2177 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2178 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2179 | if (hret != H_SUCCESS) { | |
2180 | ehea_error("query_ehea_qp failed (4)"); | |
2181 | goto out; | |
2182 | } | |
2183 | ||
2184 | ret = 0; | |
2185 | out: | |
2186 | kfree(cb0); | |
2187 | return ret; | |
2188 | } | |
2189 | ||
2190 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps, | |
2191 | int add_tx_qps) | |
2192 | { | |
2193 | int ret, i; | |
2194 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2195 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2196 | ||
2197 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2198 | EHEA_MAX_ENTRIES_EQ, 1); | |
2199 | if (!port->qp_eq) { | |
2200 | ret = -EINVAL; | |
2201 | ehea_error("ehea_create_eq failed (qp_eq)"); | |
2202 | goto out_kill_eq; | |
2203 | } | |
2204 | ||
2205 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2206 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2207 | pr_cfg.max_entries_sq = sq_entries; |
2208 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2209 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2210 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2211 | ||
2212 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2213 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2214 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2215 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2216 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2217 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2218 | ||
2219 | for (i = 0; i < def_qps; i++) { | |
2220 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2221 | if (ret) | |
2222 | goto out_clean_pr; | |
2223 | } | |
2224 | for (i = def_qps; i < def_qps + add_tx_qps; i++) { | |
2225 | ret = ehea_init_port_res(port, &port->port_res[i], | |
2226 | &pr_cfg_small_rx, i); | |
2227 | if (ret) | |
2228 | goto out_clean_pr; | |
2229 | } | |
2230 | ||
2231 | return 0; | |
2232 | ||
2233 | out_clean_pr: | |
2234 | while (--i >= 0) | |
2235 | ehea_clean_portres(port, &port->port_res[i]); | |
2236 | ||
2237 | out_kill_eq: | |
2238 | ehea_destroy_eq(port->qp_eq); | |
2239 | return ret; | |
2240 | } | |
2241 | ||
2242 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2243 | { | |
2244 | int ret = 0; | |
2245 | int i; | |
2246 | ||
2247 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) | |
2248 | ret |= ehea_clean_portres(port, &port->port_res[i]); | |
2249 | ||
2250 | ret |= ehea_destroy_eq(port->qp_eq); | |
2251 | ||
2252 | return ret; | |
2253 | } | |
2254 | ||
35cf2e2e | 2255 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2256 | { |
35cf2e2e TK |
2257 | if (adapter->active_ports) |
2258 | return; | |
1211bb6d TK |
2259 | |
2260 | ehea_rem_mr(&adapter->mr); | |
2261 | } | |
2262 | ||
35cf2e2e | 2263 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2264 | { |
35cf2e2e TK |
2265 | if (adapter->active_ports) |
2266 | return 0; | |
1211bb6d TK |
2267 | |
2268 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2269 | } | |
2270 | ||
7a291083 JBT |
2271 | static int ehea_up(struct net_device *dev) |
2272 | { | |
2273 | int ret, i; | |
2274 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2275 | |
2276 | if (port->state == EHEA_PORT_UP) | |
2277 | return 0; | |
2278 | ||
2279 | ret = ehea_port_res_setup(port, port->num_def_qps, | |
2280 | port->num_add_tx_qps); | |
2281 | if (ret) { | |
2282 | ehea_error("port_res_failed"); | |
2283 | goto out; | |
2284 | } | |
2285 | ||
2286 | /* Set default QP for this port */ | |
2287 | ret = ehea_configure_port(port); | |
2288 | if (ret) { | |
2289 | ehea_error("ehea_configure_port failed. ret:%d", ret); | |
2290 | goto out_clean_pr; | |
2291 | } | |
2292 | ||
7a291083 JBT |
2293 | ret = ehea_reg_interrupts(dev); |
2294 | if (ret) { | |
f9e29228 TK |
2295 | ehea_error("reg_interrupts failed. ret:%d", ret); |
2296 | goto out_clean_pr; | |
7a291083 JBT |
2297 | } |
2298 | ||
2299 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
2300 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); | |
2301 | if (ret) { | |
2302 | ehea_error("activate_qp failed"); | |
2303 | goto out_free_irqs; | |
2304 | } | |
2305 | } | |
2306 | ||
2307 | for(i = 0; i < port->num_def_qps; i++) { | |
2308 | ret = ehea_fill_port_res(&port->port_res[i]); | |
2309 | if (ret) { | |
2310 | ehea_error("out_free_irqs"); | |
2311 | goto out_free_irqs; | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | ret = 0; | |
2316 | port->state = EHEA_PORT_UP; | |
2317 | goto out; | |
2318 | ||
2319 | out_free_irqs: | |
2320 | ehea_free_interrupts(dev); | |
2321 | ||
7a291083 JBT |
2322 | out_clean_pr: |
2323 | ehea_clean_all_portres(port); | |
2324 | out: | |
44c82152 TK |
2325 | if (ret) |
2326 | ehea_info("Failed starting %s. ret=%i", dev->name, ret); | |
2327 | ||
7a291083 JBT |
2328 | return ret; |
2329 | } | |
2330 | ||
bea3348e SH |
2331 | static void port_napi_disable(struct ehea_port *port) |
2332 | { | |
2333 | int i; | |
2334 | ||
0173b793 | 2335 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2336 | napi_disable(&port->port_res[i].napi); |
2337 | } | |
2338 | ||
2339 | static void port_napi_enable(struct ehea_port *port) | |
2340 | { | |
2341 | int i; | |
2342 | ||
0173b793 | 2343 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2344 | napi_enable(&port->port_res[i].napi); |
2345 | } | |
2346 | ||
7a291083 JBT |
2347 | static int ehea_open(struct net_device *dev) |
2348 | { | |
2349 | int ret; | |
2350 | struct ehea_port *port = netdev_priv(dev); | |
2351 | ||
2352 | down(&port->port_lock); | |
2353 | ||
2354 | if (netif_msg_ifup(port)) | |
2355 | ehea_info("enabling port %s", dev->name); | |
2356 | ||
2357 | ret = ehea_up(dev); | |
bea3348e SH |
2358 | if (!ret) { |
2359 | port_napi_enable(port); | |
7a291083 | 2360 | netif_start_queue(dev); |
bea3348e | 2361 | } |
7a291083 JBT |
2362 | |
2363 | up(&port->port_lock); | |
2364 | ||
2365 | return ret; | |
2366 | } | |
2367 | ||
2368 | static int ehea_down(struct net_device *dev) | |
2369 | { | |
bea3348e | 2370 | int ret; |
7a291083 JBT |
2371 | struct ehea_port *port = netdev_priv(dev); |
2372 | ||
2373 | if (port->state == EHEA_PORT_DOWN) | |
2374 | return 0; | |
2375 | ||
2376 | ehea_drop_multicast_list(dev); | |
2377 | ehea_free_interrupts(dev); | |
2378 | ||
7a291083 | 2379 | port->state = EHEA_PORT_DOWN; |
44c82152 TK |
2380 | |
2381 | ret = ehea_clean_all_portres(port); | |
2382 | if (ret) | |
2383 | ehea_info("Failed freeing resources for %s. ret=%i", | |
2384 | dev->name, ret); | |
2385 | ||
7a291083 JBT |
2386 | return ret; |
2387 | } | |
2388 | ||
2389 | static int ehea_stop(struct net_device *dev) | |
2390 | { | |
2391 | int ret; | |
2392 | struct ehea_port *port = netdev_priv(dev); | |
2393 | ||
2394 | if (netif_msg_ifdown(port)) | |
2395 | ehea_info("disabling port %s", dev->name); | |
2396 | ||
3bf76b81 | 2397 | flush_scheduled_work(); |
7a291083 JBT |
2398 | down(&port->port_lock); |
2399 | netif_stop_queue(dev); | |
0173b793 | 2400 | port_napi_disable(port); |
7a291083 JBT |
2401 | ret = ehea_down(dev); |
2402 | up(&port->port_lock); | |
2403 | return ret; | |
2404 | } | |
2405 | ||
2c69448b JBT |
2406 | void ehea_purge_sq(struct ehea_qp *orig_qp) |
2407 | { | |
2408 | struct ehea_qp qp = *orig_qp; | |
2409 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2410 | struct ehea_swqe *swqe; | |
2411 | int wqe_index; | |
2412 | int i; | |
2413 | ||
2414 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2415 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2416 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | int ehea_stop_qps(struct net_device *dev) | |
2421 | { | |
2422 | struct ehea_port *port = netdev_priv(dev); | |
2423 | struct ehea_adapter *adapter = port->adapter; | |
2424 | struct hcp_modify_qp_cb0* cb0; | |
2425 | int ret = -EIO; | |
2426 | int dret; | |
2427 | int i; | |
2428 | u64 hret; | |
2429 | u64 dummy64 = 0; | |
2430 | u16 dummy16 = 0; | |
2431 | ||
2432 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2433 | if (!cb0) { | |
2434 | ret = -ENOMEM; | |
2435 | goto out; | |
2436 | } | |
2437 | ||
2438 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2439 | struct ehea_port_res *pr = &port->port_res[i]; | |
2440 | struct ehea_qp *qp = pr->qp; | |
2441 | ||
2442 | /* Purge send queue */ | |
2443 | ehea_purge_sq(qp); | |
2444 | ||
2445 | /* Disable queue pair */ | |
2446 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2447 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2448 | cb0); | |
2449 | if (hret != H_SUCCESS) { | |
2450 | ehea_error("query_ehea_qp failed (1)"); | |
2451 | goto out; | |
2452 | } | |
2453 | ||
2454 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2455 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2456 | ||
2457 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2458 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2459 | 1), cb0, &dummy64, | |
2460 | &dummy64, &dummy16, &dummy16); | |
2461 | if (hret != H_SUCCESS) { | |
2462 | ehea_error("modify_ehea_qp failed (1)"); | |
2463 | goto out; | |
2464 | } | |
2465 | ||
2466 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2467 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2468 | cb0); | |
2469 | if (hret != H_SUCCESS) { | |
2470 | ehea_error("query_ehea_qp failed (2)"); | |
2471 | goto out; | |
2472 | } | |
2473 | ||
2474 | /* deregister shared memory regions */ | |
2475 | dret = ehea_rem_smrs(pr); | |
2476 | if (dret) { | |
2477 | ehea_error("unreg shared memory region failed"); | |
2478 | goto out; | |
2479 | } | |
2480 | } | |
2481 | ||
2482 | ret = 0; | |
2483 | out: | |
2484 | kfree(cb0); | |
2485 | ||
2486 | return ret; | |
2487 | } | |
2488 | ||
2489 | void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res * pr) | |
2490 | { | |
2491 | struct ehea_qp qp = *orig_qp; | |
2492 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2493 | struct ehea_rwqe *rwqe; | |
2494 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2495 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2496 | struct sk_buff *skb; | |
2497 | u32 lkey = pr->recv_mr.lkey; | |
2498 | ||
2499 | ||
2500 | int i; | |
2501 | int index; | |
2502 | ||
2503 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2504 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2505 | rwqe->sg_list[0].l_key = lkey; | |
2506 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2507 | skb = skba_rq2[index]; | |
2508 | if (skb) | |
2509 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2510 | } | |
2511 | ||
2512 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2513 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2514 | rwqe->sg_list[0].l_key = lkey; | |
2515 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2516 | skb = skba_rq3[index]; | |
2517 | if (skb) | |
2518 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | int ehea_restart_qps(struct net_device *dev) | |
2523 | { | |
2524 | struct ehea_port *port = netdev_priv(dev); | |
2525 | struct ehea_adapter *adapter = port->adapter; | |
2526 | int ret = 0; | |
2527 | int i; | |
2528 | ||
2529 | struct hcp_modify_qp_cb0* cb0; | |
2530 | u64 hret; | |
2531 | u64 dummy64 = 0; | |
2532 | u16 dummy16 = 0; | |
2533 | ||
2534 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2535 | if (!cb0) { | |
2536 | ret = -ENOMEM; | |
2537 | goto out; | |
2538 | } | |
2539 | ||
2540 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2541 | struct ehea_port_res *pr = &port->port_res[i]; | |
2542 | struct ehea_qp *qp = pr->qp; | |
2543 | ||
2544 | ret = ehea_gen_smrs(pr); | |
2545 | if (ret) { | |
2546 | ehea_error("creation of shared memory regions failed"); | |
2547 | goto out; | |
2548 | } | |
2549 | ||
2550 | ehea_update_rqs(qp, pr); | |
2551 | ||
2552 | /* Enable queue pair */ | |
2553 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2554 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2555 | cb0); | |
2556 | if (hret != H_SUCCESS) { | |
2557 | ehea_error("query_ehea_qp failed (1)"); | |
2558 | goto out; | |
2559 | } | |
2560 | ||
2561 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2562 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2563 | ||
2564 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2565 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2566 | 1), cb0, &dummy64, | |
2567 | &dummy64, &dummy16, &dummy16); | |
2568 | if (hret != H_SUCCESS) { | |
2569 | ehea_error("modify_ehea_qp failed (1)"); | |
2570 | goto out; | |
2571 | } | |
2572 | ||
2573 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2574 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2575 | cb0); | |
2576 | if (hret != H_SUCCESS) { | |
2577 | ehea_error("query_ehea_qp failed (2)"); | |
2578 | goto out; | |
2579 | } | |
2580 | ||
2581 | /* refill entire queue */ | |
2582 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2583 | ehea_refill_rq2(pr, 0); | |
2584 | ehea_refill_rq3(pr, 0); | |
2585 | } | |
2586 | out: | |
2587 | kfree(cb0); | |
2588 | ||
2589 | return ret; | |
2590 | } | |
2591 | ||
c4028958 | 2592 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2593 | { |
2594 | int ret; | |
c4028958 DH |
2595 | struct ehea_port *port = |
2596 | container_of(work, struct ehea_port, reset_task); | |
2597 | struct net_device *dev = port->netdev; | |
7a291083 JBT |
2598 | |
2599 | port->resets++; | |
2600 | down(&port->port_lock); | |
2601 | netif_stop_queue(dev); | |
bea3348e SH |
2602 | |
2603 | port_napi_disable(port); | |
7a291083 | 2604 | |
44c82152 | 2605 | ehea_down(dev); |
7a291083 JBT |
2606 | |
2607 | ret = ehea_up(dev); | |
44c82152 | 2608 | if (ret) |
7a291083 | 2609 | goto out; |
7a291083 | 2610 | |
2c69448b JBT |
2611 | ehea_set_multicast_list(dev); |
2612 | ||
7a291083 JBT |
2613 | if (netif_msg_timer(port)) |
2614 | ehea_info("Device %s resetted successfully", dev->name); | |
2615 | ||
bea3348e SH |
2616 | port_napi_enable(port); |
2617 | ||
7a291083 JBT |
2618 | netif_wake_queue(dev); |
2619 | out: | |
2620 | up(&port->port_lock); | |
2621 | return; | |
2622 | } | |
2623 | ||
44c82152 TK |
2624 | static void ehea_rereg_mrs(struct work_struct *work) |
2625 | { | |
2626 | int ret, i; | |
2627 | struct ehea_adapter *adapter; | |
2628 | ||
2c69448b | 2629 | down(&dlpar_mem_lock); |
44c82152 TK |
2630 | ehea_info("LPAR memory enlarged - re-initializing driver"); |
2631 | ||
2632 | list_for_each_entry(adapter, &adapter_list, list) | |
2633 | if (adapter->active_ports) { | |
2634 | /* Shutdown all ports */ | |
2635 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2636 | struct ehea_port *port = adapter->port[i]; | |
2637 | ||
2638 | if (port) { | |
2639 | struct net_device *dev = port->netdev; | |
2640 | ||
2641 | if (dev->flags & IFF_UP) { | |
44c82152 TK |
2642 | down(&port->port_lock); |
2643 | netif_stop_queue(dev); | |
2c69448b JBT |
2644 | ret = ehea_stop_qps(dev); |
2645 | if (ret) { | |
2646 | up(&port->port_lock); | |
2647 | goto out; | |
2648 | } | |
bea3348e | 2649 | port_napi_disable(port); |
44c82152 TK |
2650 | up(&port->port_lock); |
2651 | } | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | /* Unregister old memory region */ | |
2656 | ret = ehea_rem_mr(&adapter->mr); | |
2657 | if (ret) { | |
2658 | ehea_error("unregister MR failed - driver" | |
2659 | " inoperable!"); | |
2660 | goto out; | |
2661 | } | |
2662 | } | |
2663 | ||
2664 | ehea_destroy_busmap(); | |
44c82152 | 2665 | ret = ehea_create_busmap(); |
2c69448b JBT |
2666 | if (ret) { |
2667 | ehea_error("creating ehea busmap failed"); | |
44c82152 | 2668 | goto out; |
2c69448b | 2669 | } |
44c82152 TK |
2670 | |
2671 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
2672 | ||
2673 | list_for_each_entry(adapter, &adapter_list, list) | |
2674 | if (adapter->active_ports) { | |
2675 | /* Register new memory region */ | |
2676 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2677 | if (ret) { | |
2678 | ehea_error("register MR failed - driver" | |
2679 | " inoperable!"); | |
2680 | goto out; | |
2681 | } | |
2682 | ||
2683 | /* Restart all ports */ | |
2684 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2685 | struct ehea_port *port = adapter->port[i]; | |
2686 | ||
2687 | if (port) { | |
2688 | struct net_device *dev = port->netdev; | |
2689 | ||
2690 | if (dev->flags & IFF_UP) { | |
44c82152 | 2691 | down(&port->port_lock); |
2c69448b JBT |
2692 | port_napi_enable(port); |
2693 | ret = ehea_restart_qps(dev); | |
2694 | if (!ret) | |
44c82152 | 2695 | netif_wake_queue(dev); |
44c82152 TK |
2696 | up(&port->port_lock); |
2697 | } | |
2698 | } | |
2699 | } | |
2700 | } | |
2c69448b JBT |
2701 | up(&dlpar_mem_lock); |
2702 | ehea_info("re-initializing driver complete"); | |
44c82152 TK |
2703 | out: |
2704 | return; | |
2705 | } | |
2706 | ||
7a291083 JBT |
2707 | static void ehea_tx_watchdog(struct net_device *dev) |
2708 | { | |
2709 | struct ehea_port *port = netdev_priv(dev); | |
2710 | ||
2c69448b JBT |
2711 | if (netif_carrier_ok(dev) && |
2712 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
3bf76b81 | 2713 | schedule_work(&port->reset_task); |
7a291083 JBT |
2714 | } |
2715 | ||
2716 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
2717 | { | |
2718 | struct hcp_query_ehea *cb; | |
2719 | u64 hret; | |
2720 | int ret; | |
2721 | ||
a1d261c5 | 2722 | cb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2723 | if (!cb) { |
2724 | ret = -ENOMEM; | |
2725 | goto out; | |
2726 | } | |
2727 | ||
2728 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
2729 | ||
2730 | if (hret != H_SUCCESS) { | |
2731 | ret = -EIO; | |
2732 | goto out_herr; | |
2733 | } | |
2734 | ||
7a291083 JBT |
2735 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
2736 | ret = 0; | |
2737 | ||
2738 | out_herr: | |
2739 | kfree(cb); | |
2740 | out: | |
2741 | return ret; | |
2742 | } | |
2743 | ||
1acf2318 | 2744 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 2745 | { |
7a291083 | 2746 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
2747 | u64 hret; |
2748 | int ret = 0; | |
7a291083 | 2749 | |
1acf2318 | 2750 | *jumbo = 0; |
7a291083 | 2751 | |
1acf2318 | 2752 | /* (Try to) enable *jumbo frames */ |
a1d261c5 | 2753 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2754 | if (!cb4) { |
2755 | ehea_error("no mem for cb4"); | |
1acf2318 JBT |
2756 | ret = -ENOMEM; |
2757 | goto out; | |
7a291083 | 2758 | } else { |
1acf2318 | 2759 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
2760 | port->logical_port_id, |
2761 | H_PORT_CB4, | |
2762 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
2763 | if (hret == H_SUCCESS) { |
2764 | if (cb4->jumbo_frame) | |
1acf2318 | 2765 | *jumbo = 1; |
9c750b7d TK |
2766 | else { |
2767 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
2768 | hret = ehea_h_modify_ehea_port(port->adapter-> |
2769 | handle, | |
9c750b7d | 2770 | port-> |
1acf2318 | 2771 | logical_port_id, |
9c750b7d TK |
2772 | H_PORT_CB4, |
2773 | H_PORT_CB4_JUMBO, | |
2774 | cb4); | |
2775 | if (hret == H_SUCCESS) | |
1acf2318 | 2776 | *jumbo = 1; |
9c750b7d | 2777 | } |
1acf2318 JBT |
2778 | } else |
2779 | ret = -EINVAL; | |
2780 | ||
7a291083 JBT |
2781 | kfree(cb4); |
2782 | } | |
1acf2318 JBT |
2783 | out: |
2784 | return ret; | |
2785 | } | |
2786 | ||
2787 | static ssize_t ehea_show_port_id(struct device *dev, | |
2788 | struct device_attribute *attr, char *buf) | |
2789 | { | |
2790 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 2791 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
2792 | } |
2793 | ||
2794 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
2795 | NULL); | |
2796 | ||
2797 | static void __devinit logical_port_release(struct device *dev) | |
2798 | { | |
2799 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
2800 | of_node_put(port->ofdev.node); | |
2801 | } | |
2802 | ||
d1dea38d | 2803 | static int ehea_driver_sysfs_add(struct device *dev, |
d1d25aab | 2804 | struct device_driver *driver) |
d1dea38d TK |
2805 | { |
2806 | int ret; | |
2807 | ||
2808 | ret = sysfs_create_link(&driver->kobj, &dev->kobj, | |
2809 | kobject_name(&dev->kobj)); | |
2810 | if (ret == 0) { | |
2811 | ret = sysfs_create_link(&dev->kobj, &driver->kobj, | |
2812 | "driver"); | |
2813 | if (ret) | |
2814 | sysfs_remove_link(&driver->kobj, | |
2815 | kobject_name(&dev->kobj)); | |
2816 | } | |
2817 | return ret; | |
2818 | } | |
2819 | ||
2820 | static void ehea_driver_sysfs_remove(struct device *dev, | |
d1d25aab | 2821 | struct device_driver *driver) |
d1dea38d TK |
2822 | { |
2823 | struct device_driver *drv = driver; | |
2824 | ||
2825 | if (drv) { | |
2826 | sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj)); | |
2827 | sysfs_remove_link(&dev->kobj, "driver"); | |
2828 | } | |
2829 | } | |
2830 | ||
1acf2318 JBT |
2831 | static struct device *ehea_register_port(struct ehea_port *port, |
2832 | struct device_node *dn) | |
2833 | { | |
2834 | int ret; | |
2835 | ||
2836 | port->ofdev.node = of_node_get(dn); | |
6b08f3ae | 2837 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 2838 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 2839 | |
d1dea38d | 2840 | sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++); |
1acf2318 JBT |
2841 | port->ofdev.dev.release = logical_port_release; |
2842 | ||
2843 | ret = of_device_register(&port->ofdev); | |
2844 | if (ret) { | |
2845 | ehea_error("failed to register device. ret=%d", ret); | |
2846 | goto out; | |
2847 | } | |
2848 | ||
2849 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 2850 | if (ret) { |
1acf2318 JBT |
2851 | ehea_error("failed to register attributes, ret=%d", ret); |
2852 | goto out_unreg_of_dev; | |
2853 | } | |
e542aa6b | 2854 | |
d1dea38d TK |
2855 | ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver); |
2856 | if (ret) { | |
2857 | ehea_error("failed to register sysfs driver link"); | |
2858 | goto out_rem_dev_file; | |
2859 | } | |
2860 | ||
1acf2318 JBT |
2861 | return &port->ofdev.dev; |
2862 | ||
d1dea38d TK |
2863 | out_rem_dev_file: |
2864 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
1acf2318 JBT |
2865 | out_unreg_of_dev: |
2866 | of_device_unregister(&port->ofdev); | |
2867 | out: | |
2868 | return NULL; | |
2869 | } | |
2870 | ||
2871 | static void ehea_unregister_port(struct ehea_port *port) | |
2872 | { | |
d1dea38d | 2873 | ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver); |
1acf2318 JBT |
2874 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); |
2875 | of_device_unregister(&port->ofdev); | |
2876 | } | |
2877 | ||
2878 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, | |
2879 | u32 logical_port_id, | |
2880 | struct device_node *dn) | |
2881 | { | |
2882 | int ret; | |
2883 | struct net_device *dev; | |
2884 | struct ehea_port *port; | |
2885 | struct device *port_dev; | |
2886 | int jumbo; | |
2887 | ||
2888 | /* allocate memory for the port structures */ | |
2889 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
2890 | ||
2891 | if (!dev) { | |
2892 | ehea_error("no mem for net_device"); | |
2893 | ret = -ENOMEM; | |
2894 | goto out_err; | |
2895 | } | |
2896 | ||
2897 | port = netdev_priv(dev); | |
2898 | ||
2899 | sema_init(&port->port_lock, 1); | |
2900 | port->state = EHEA_PORT_DOWN; | |
2901 | port->sig_comp_iv = sq_entries / 10; | |
2902 | ||
2903 | port->adapter = adapter; | |
2904 | port->netdev = dev; | |
2905 | port->logical_port_id = logical_port_id; | |
2906 | ||
2907 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
2908 | ||
2909 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
2910 | if (!port->mc_list) { | |
2911 | ret = -ENOMEM; | |
2912 | goto out_free_ethdev; | |
2913 | } | |
2914 | ||
2915 | INIT_LIST_HEAD(&port->mc_list->list); | |
2916 | ||
2917 | ret = ehea_sense_port_attr(port); | |
2918 | if (ret) | |
2919 | goto out_free_mc_list; | |
2920 | ||
2921 | port_dev = ehea_register_port(port, dn); | |
2922 | if (!port_dev) | |
2923 | goto out_free_mc_list; | |
2924 | ||
2925 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
2926 | |
2927 | /* initialize net_device structure */ | |
7a291083 JBT |
2928 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
2929 | ||
2930 | dev->open = ehea_open; | |
8d22c971 JBT |
2931 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2932 | dev->poll_controller = ehea_netpoll; | |
2933 | #endif | |
7a291083 JBT |
2934 | dev->stop = ehea_stop; |
2935 | dev->hard_start_xmit = ehea_start_xmit; | |
2936 | dev->get_stats = ehea_get_stats; | |
2937 | dev->set_multicast_list = ehea_set_multicast_list; | |
2938 | dev->set_mac_address = ehea_set_mac_addr; | |
2939 | dev->change_mtu = ehea_change_mtu; | |
2940 | dev->vlan_rx_register = ehea_vlan_rx_register; | |
2941 | dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; | |
2942 | dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; | |
2943 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO | |
2944 | | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX | |
2945 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER | |
2946 | | NETIF_F_LLTX; | |
2947 | dev->tx_timeout = &ehea_tx_watchdog; | |
2948 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; | |
2949 | ||
c4028958 | 2950 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 | 2951 | |
f9e29228 TK |
2952 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2953 | if (ret) { | |
2954 | ret = -EIO; | |
2955 | goto out_unreg_port; | |
2956 | } | |
2957 | ||
7a291083 JBT |
2958 | ehea_set_ethtool_ops(dev); |
2959 | ||
2960 | ret = register_netdev(dev); | |
2961 | if (ret) { | |
2962 | ehea_error("register_netdev failed. ret=%d", ret); | |
f9e29228 | 2963 | goto out_dereg_bc; |
7a291083 JBT |
2964 | } |
2965 | ||
d4dc4ec9 JBT |
2966 | port->lro_max_aggr = lro_max_aggr; |
2967 | ||
1acf2318 | 2968 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 2969 | if (ret) |
1acf2318 JBT |
2970 | ehea_error("failed determining jumbo frame status for %s", |
2971 | port->netdev->name); | |
2972 | ||
9c750b7d TK |
2973 | ehea_info("%s: Jumbo frames are %sabled", dev->name, |
2974 | jumbo == 1 ? "en" : "dis"); | |
2975 | ||
44c82152 TK |
2976 | adapter->active_ports++; |
2977 | ||
1acf2318 | 2978 | return port; |
7a291083 | 2979 | |
f9e29228 TK |
2980 | out_dereg_bc: |
2981 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
2982 | ||
1acf2318 JBT |
2983 | out_unreg_port: |
2984 | ehea_unregister_port(port); | |
2985 | ||
2986 | out_free_mc_list: | |
7a291083 | 2987 | kfree(port->mc_list); |
1acf2318 JBT |
2988 | |
2989 | out_free_ethdev: | |
2990 | free_netdev(dev); | |
2991 | ||
2992 | out_err: | |
2993 | ehea_error("setting up logical port with id=%d failed, ret=%d", | |
2994 | logical_port_id, ret); | |
2995 | return NULL; | |
2996 | } | |
2997 | ||
2998 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
2999 | { | |
3000 | unregister_netdev(port->netdev); | |
3001 | ehea_unregister_port(port); | |
f9e29228 | 3002 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
1acf2318 JBT |
3003 | kfree(port->mc_list); |
3004 | free_netdev(port->netdev); | |
44c82152 | 3005 | port->adapter->active_ports--; |
7a291083 JBT |
3006 | } |
3007 | ||
3008 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
3009 | { | |
1acf2318 JBT |
3010 | struct device_node *lhea_dn; |
3011 | struct device_node *eth_dn = NULL; | |
d1d25aab | 3012 | |
9f9a3b8a | 3013 | const u32 *dn_log_port_id; |
1acf2318 JBT |
3014 | int i = 0; |
3015 | ||
6b08f3ae | 3016 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 3017 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3018 | |
40cd3a45 | 3019 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3020 | NULL); |
1acf2318 JBT |
3021 | if (!dn_log_port_id) { |
3022 | ehea_error("bad device node: eth_dn name=%s", | |
3023 | eth_dn->full_name); | |
3024 | continue; | |
3025 | } | |
7a291083 | 3026 | |
1211bb6d TK |
3027 | if (ehea_add_adapter_mr(adapter)) { |
3028 | ehea_error("creating MR failed"); | |
3029 | of_node_put(eth_dn); | |
3030 | return -EIO; | |
3031 | } | |
3032 | ||
1acf2318 JBT |
3033 | adapter->port[i] = ehea_setup_single_port(adapter, |
3034 | *dn_log_port_id, | |
3035 | eth_dn); | |
7a291083 | 3036 | if (adapter->port[i]) |
1acf2318 | 3037 | ehea_info("%s -> logical port id #%d", |
e542aa6b | 3038 | adapter->port[i]->netdev->name, |
1acf2318 | 3039 | *dn_log_port_id); |
1211bb6d TK |
3040 | else |
3041 | ehea_remove_adapter_mr(adapter); | |
3042 | ||
1acf2318 | 3043 | i++; |
1eef4e04 | 3044 | }; |
7a291083 | 3045 | |
1211bb6d | 3046 | return 0; |
1acf2318 JBT |
3047 | } |
3048 | ||
e542aa6b JBT |
3049 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3050 | u32 logical_port_id) | |
1acf2318 JBT |
3051 | { |
3052 | struct device_node *lhea_dn; | |
3053 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3054 | const u32 *dn_log_port_id; |
1acf2318 | 3055 | |
6b08f3ae | 3056 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 3057 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3058 | |
40cd3a45 | 3059 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3060 | NULL); |
1acf2318 JBT |
3061 | if (dn_log_port_id) |
3062 | if (*dn_log_port_id == logical_port_id) | |
3063 | return eth_dn; | |
1eef4e04 | 3064 | }; |
1acf2318 JBT |
3065 | |
3066 | return NULL; | |
3067 | } | |
3068 | ||
3069 | static ssize_t ehea_probe_port(struct device *dev, | |
3070 | struct device_attribute *attr, | |
3071 | const char *buf, size_t count) | |
3072 | { | |
3073 | struct ehea_adapter *adapter = dev->driver_data; | |
3074 | struct ehea_port *port; | |
3075 | struct device_node *eth_dn = NULL; | |
3076 | int i; | |
3077 | ||
3078 | u32 logical_port_id; | |
3079 | ||
a8e34fda | 3080 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3081 | |
3082 | port = ehea_get_port(adapter, logical_port_id); | |
3083 | ||
3084 | if (port) { | |
3085 | ehea_info("adding port with logical port id=%d failed. port " | |
3086 | "already configured as %s.", logical_port_id, | |
3087 | port->netdev->name); | |
3088 | return -EINVAL; | |
7a291083 | 3089 | } |
e542aa6b | 3090 | |
1acf2318 | 3091 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3092 | |
1acf2318 JBT |
3093 | if (!eth_dn) { |
3094 | ehea_info("no logical port with id %d found", logical_port_id); | |
3095 | return -EINVAL; | |
3096 | } | |
e542aa6b | 3097 | |
1211bb6d TK |
3098 | if (ehea_add_adapter_mr(adapter)) { |
3099 | ehea_error("creating MR failed"); | |
3100 | return -EIO; | |
3101 | } | |
3102 | ||
1acf2318 | 3103 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3104 | |
1eef4e04 JBT |
3105 | of_node_put(eth_dn); |
3106 | ||
1acf2318 JBT |
3107 | if (port) { |
3108 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
3109 | if (!adapter->port[i]) { | |
3110 | adapter->port[i] = port; | |
3111 | break; | |
3112 | } | |
7a291083 | 3113 | |
1acf2318 JBT |
3114 | ehea_info("added %s (logical port id=%d)", port->netdev->name, |
3115 | logical_port_id); | |
1211bb6d TK |
3116 | } else { |
3117 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3118 | return -EIO; |
1211bb6d | 3119 | } |
7a291083 | 3120 | |
1acf2318 JBT |
3121 | return (ssize_t) count; |
3122 | } | |
3123 | ||
3124 | static ssize_t ehea_remove_port(struct device *dev, | |
3125 | struct device_attribute *attr, | |
3126 | const char *buf, size_t count) | |
3127 | { | |
3128 | struct ehea_adapter *adapter = dev->driver_data; | |
3129 | struct ehea_port *port; | |
3130 | int i; | |
3131 | u32 logical_port_id; | |
3132 | ||
a8e34fda | 3133 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3134 | |
3135 | port = ehea_get_port(adapter, logical_port_id); | |
3136 | ||
3137 | if (port) { | |
3138 | ehea_info("removed %s (logical port id=%d)", port->netdev->name, | |
3139 | logical_port_id); | |
3140 | ||
3141 | ehea_shutdown_single_port(port); | |
3142 | ||
3143 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
3144 | if (adapter->port[i] == port) { | |
3145 | adapter->port[i] = NULL; | |
3146 | break; | |
3147 | } | |
3148 | } else { | |
3149 | ehea_error("removing port with logical port id=%d failed. port " | |
3150 | "not configured.", logical_port_id); | |
3151 | return -EINVAL; | |
3152 | } | |
3153 | ||
1211bb6d TK |
3154 | ehea_remove_adapter_mr(adapter); |
3155 | ||
1acf2318 JBT |
3156 | return (ssize_t) count; |
3157 | } | |
3158 | ||
3159 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
3160 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
3161 | ||
6b08f3ae | 3162 | int ehea_create_device_sysfs(struct of_device *dev) |
1acf2318 | 3163 | { |
6b08f3ae | 3164 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3165 | if (ret) |
3166 | goto out; | |
3167 | ||
6b08f3ae | 3168 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3169 | out: |
7a291083 JBT |
3170 | return ret; |
3171 | } | |
3172 | ||
6b08f3ae | 3173 | void ehea_remove_device_sysfs(struct of_device *dev) |
1acf2318 | 3174 | { |
6b08f3ae JF |
3175 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3176 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3177 | } |
3178 | ||
6b08f3ae | 3179 | static int __devinit ehea_probe_adapter(struct of_device *dev, |
1acf2318 | 3180 | const struct of_device_id *id) |
7a291083 JBT |
3181 | { |
3182 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3183 | const u64 *adapter_handle; |
7a291083 JBT |
3184 | int ret; |
3185 | ||
6b08f3ae | 3186 | if (!dev || !dev->node) { |
1eef4e04 JBT |
3187 | ehea_error("Invalid ibmebus device probed"); |
3188 | return -EINVAL; | |
3189 | } | |
3190 | ||
7a291083 JBT |
3191 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
3192 | if (!adapter) { | |
3193 | ret = -ENOMEM; | |
6b08f3ae | 3194 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3195 | goto out; |
3196 | } | |
3197 | ||
44c82152 TK |
3198 | list_add(&adapter->list, &adapter_list); |
3199 | ||
6b08f3ae | 3200 | adapter->ofdev = dev; |
1acf2318 | 3201 | |
6b08f3ae | 3202 | adapter_handle = of_get_property(dev->node, "ibm,hea-handle", |
d1d25aab | 3203 | NULL); |
061bf3cd TK |
3204 | if (adapter_handle) |
3205 | adapter->handle = *adapter_handle; | |
3206 | ||
3207 | if (!adapter->handle) { | |
6b08f3ae JF |
3208 | dev_err(&dev->dev, "failed getting handle for adapter" |
3209 | " '%s'\n", dev->node->full_name); | |
7a291083 JBT |
3210 | ret = -ENODEV; |
3211 | goto out_free_ad; | |
3212 | } | |
3213 | ||
7a291083 JBT |
3214 | adapter->pd = EHEA_PD_ID; |
3215 | ||
6b08f3ae | 3216 | dev->dev.driver_data = adapter; |
7a291083 | 3217 | |
7a291083 JBT |
3218 | |
3219 | /* initialize adapter and ports */ | |
3220 | /* get adapter properties */ | |
3221 | ret = ehea_sense_adapter_attr(adapter); | |
3222 | if (ret) { | |
898eb71c | 3223 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3224 | goto out_free_ad; |
7a291083 | 3225 | } |
7a291083 JBT |
3226 | |
3227 | adapter->neq = ehea_create_eq(adapter, | |
3228 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3229 | if (!adapter->neq) { | |
1eef4e04 | 3230 | ret = -EIO; |
898eb71c | 3231 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3232 | goto out_free_ad; |
7a291083 JBT |
3233 | } |
3234 | ||
3235 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3236 | (unsigned long)adapter); | |
3237 | ||
6b08f3ae | 3238 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
38515e90 | 3239 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
3240 | "ehea_neq", adapter); |
3241 | if (ret) { | |
898eb71c | 3242 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
7a291083 JBT |
3243 | goto out_kill_eq; |
3244 | } | |
3245 | ||
1eef4e04 JBT |
3246 | ret = ehea_create_device_sysfs(dev); |
3247 | if (ret) | |
3bf76b81 | 3248 | goto out_free_irq; |
1acf2318 | 3249 | |
7a291083 JBT |
3250 | ret = ehea_setup_ports(adapter); |
3251 | if (ret) { | |
898eb71c | 3252 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3253 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3254 | } |
3255 | ||
3256 | ret = 0; | |
3257 | goto out; | |
3258 | ||
1acf2318 JBT |
3259 | out_rem_dev_sysfs: |
3260 | ehea_remove_device_sysfs(dev); | |
3261 | ||
7a291083 | 3262 | out_free_irq: |
6b08f3ae | 3263 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
7a291083 JBT |
3264 | |
3265 | out_kill_eq: | |
3266 | ehea_destroy_eq(adapter->neq); | |
3267 | ||
7a291083 JBT |
3268 | out_free_ad: |
3269 | kfree(adapter); | |
3270 | out: | |
3271 | return ret; | |
3272 | } | |
3273 | ||
6b08f3ae | 3274 | static int __devexit ehea_remove(struct of_device *dev) |
7a291083 | 3275 | { |
6b08f3ae | 3276 | struct ehea_adapter *adapter = dev->dev.driver_data; |
7a291083 JBT |
3277 | int i; |
3278 | ||
1acf2318 | 3279 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3280 | if (adapter->port[i]) { |
3281 | ehea_shutdown_single_port(adapter->port[i]); | |
3282 | adapter->port[i] = NULL; | |
3283 | } | |
1acf2318 JBT |
3284 | |
3285 | ehea_remove_device_sysfs(dev); | |
3286 | ||
3bf76b81 | 3287 | flush_scheduled_work(); |
7a291083 | 3288 | |
6b08f3ae | 3289 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3290 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3291 | |
3292 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3293 | ehea_remove_adapter_mr(adapter); |
44c82152 TK |
3294 | list_del(&adapter->list); |
3295 | ||
7a291083 | 3296 | kfree(adapter); |
44c82152 | 3297 | |
7a291083 JBT |
3298 | return 0; |
3299 | } | |
3300 | ||
2a6f4e49 JBT |
3301 | static int ehea_reboot_notifier(struct notifier_block *nb, |
3302 | unsigned long action, void *unused) | |
3303 | { | |
3304 | if (action == SYS_RESTART) { | |
3305 | ehea_info("Reboot: freeing all eHEA resources"); | |
3306 | ibmebus_unregister_driver(&ehea_driver); | |
3307 | } | |
3308 | return NOTIFY_DONE; | |
3309 | } | |
3310 | ||
3311 | static struct notifier_block ehea_reboot_nb = { | |
3312 | .notifier_call = ehea_reboot_notifier, | |
3313 | }; | |
3314 | ||
7a291083 JBT |
3315 | static int check_module_parm(void) |
3316 | { | |
3317 | int ret = 0; | |
3318 | ||
3319 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3320 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
3321 | ehea_info("Bad parameter: rq1_entries"); | |
3322 | ret = -EINVAL; | |
3323 | } | |
3324 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3325 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
3326 | ehea_info("Bad parameter: rq2_entries"); | |
3327 | ret = -EINVAL; | |
3328 | } | |
3329 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3330 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
3331 | ehea_info("Bad parameter: rq3_entries"); | |
3332 | ret = -EINVAL; | |
3333 | } | |
3334 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3335 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
3336 | ehea_info("Bad parameter: sq_entries"); | |
3337 | ret = -EINVAL; | |
3338 | } | |
3339 | ||
3340 | return ret; | |
3341 | } | |
3342 | ||
4c3ca4da JBT |
3343 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3344 | char *buf) | |
3345 | { | |
3346 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3347 | } | |
3348 | ||
3349 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3350 | ehea_show_capabilities, NULL); | |
3351 | ||
7a291083 JBT |
3352 | int __init ehea_module_init(void) |
3353 | { | |
3354 | int ret; | |
3355 | ||
3356 | printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", | |
3357 | DRV_VERSION); | |
3358 | ||
44c82152 TK |
3359 | |
3360 | INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); | |
2c69448b | 3361 | sema_init(&dlpar_mem_lock, 1); |
44c82152 | 3362 | |
7a291083 JBT |
3363 | ret = check_module_parm(); |
3364 | if (ret) | |
3365 | goto out; | |
44c82152 TK |
3366 | |
3367 | ret = ehea_create_busmap(); | |
3368 | if (ret) | |
3369 | goto out; | |
3370 | ||
2a6f4e49 JBT |
3371 | register_reboot_notifier(&ehea_reboot_nb); |
3372 | ||
7a291083 | 3373 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3374 | if (ret) { |
7a291083 | 3375 | ehea_error("failed registering eHEA device driver on ebus"); |
4c3ca4da JBT |
3376 | goto out; |
3377 | } | |
3378 | ||
3379 | ret = driver_create_file(&ehea_driver.driver, | |
3380 | &driver_attr_capabilities); | |
3381 | if (ret) { | |
3382 | ehea_error("failed to register capabilities attribute, ret=%d", | |
3383 | ret); | |
2a6f4e49 | 3384 | unregister_reboot_notifier(&ehea_reboot_nb); |
4c3ca4da JBT |
3385 | ibmebus_unregister_driver(&ehea_driver); |
3386 | goto out; | |
3387 | } | |
7a291083 JBT |
3388 | |
3389 | out: | |
3390 | return ret; | |
3391 | } | |
3392 | ||
3393 | static void __exit ehea_module_exit(void) | |
3394 | { | |
3bf76b81 | 3395 | flush_scheduled_work(); |
4c3ca4da | 3396 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3397 | ibmebus_unregister_driver(&ehea_driver); |
2a6f4e49 | 3398 | unregister_reboot_notifier(&ehea_reboot_nb); |
44c82152 | 3399 | ehea_destroy_busmap(); |
7a291083 JBT |
3400 | } |
3401 | ||
3402 | module_init(ehea_module_init); | |
3403 | module_exit(ehea_module_exit); |