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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: | |
508d2b5d DM |
9 | * Christoph Raisch <raisch@de.ibm.com> |
10 | * Jan-Bernd Themann <themann@de.ibm.com> | |
11 | * Thomas Klein <tklein@de.ibm.com> | |
7a291083 JBT |
12 | * |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
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; | |
508d2b5d DM |
57 | static int use_mcs; |
58 | static int use_lro; | |
d4dc4ec9 | 59 | static int lro_max_aggr = EHEA_LRO_MAX_AGGR; |
18604c54 | 60 | static int num_tx_qps = EHEA_NUM_TX_QP; |
508d2b5d | 61 | static int prop_carrier_state; |
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 | ||
508d2b5d | 97 | static int port_name_cnt; |
44c82152 | 98 | static LIST_HEAD(adapter_list); |
508d2b5d | 99 | u64 ehea_driver_flags; |
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 | ||
508d2b5d DM |
124 | void ehea_dump(void *adr, int len, char *msg) |
125 | { | |
7a291083 JBT |
126 | int x; |
127 | unsigned char *deb = adr; | |
128 | for (x = 0; x < len; x += 16) { | |
d2db9eea | 129 | printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg, |
508d2b5d | 130 | deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8])); |
7a291083 JBT |
131 | deb += 16; |
132 | } | |
133 | } | |
134 | ||
135 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) | |
136 | { | |
137 | struct ehea_port *port = netdev_priv(dev); | |
138 | struct net_device_stats *stats = &port->stats; | |
139 | struct hcp_ehea_port_cb2 *cb2; | |
7393b87c | 140 | u64 hret, rx_packets, tx_packets; |
7a291083 JBT |
141 | int i; |
142 | ||
143 | memset(stats, 0, sizeof(*stats)); | |
144 | ||
a1d261c5 | 145 | cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
146 | if (!cb2) { |
147 | ehea_error("no mem for cb2"); | |
148 | goto out; | |
149 | } | |
150 | ||
151 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
152 | port->logical_port_id, | |
153 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
154 | if (hret != H_SUCCESS) { | |
155 | ehea_error("query_ehea_port failed"); | |
156 | goto out_herr; | |
157 | } | |
158 | ||
159 | if (netif_msg_hw(port)) | |
160 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
161 | ||
162 | rx_packets = 0; | |
163 | for (i = 0; i < port->num_def_qps; i++) | |
164 | rx_packets += port->port_res[i].rx_packets; | |
165 | ||
7393b87c TK |
166 | tx_packets = 0; |
167 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) | |
168 | tx_packets += port->port_res[i].tx_packets; | |
169 | ||
170 | stats->tx_packets = tx_packets; | |
7a291083 JBT |
171 | stats->multicast = cb2->rxmcp; |
172 | stats->rx_errors = cb2->rxuerr; | |
173 | stats->rx_bytes = cb2->rxo; | |
174 | stats->tx_bytes = cb2->txo; | |
175 | stats->rx_packets = rx_packets; | |
176 | ||
177 | out_herr: | |
178 | kfree(cb2); | |
179 | out: | |
180 | return stats; | |
181 | } | |
182 | ||
183 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
184 | { | |
185 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
186 | struct net_device *dev = pr->port->netdev; | |
187 | int max_index_mask = pr->rq1_skba.len - 1; | |
2c69448b JBT |
188 | int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
189 | int adder = 0; | |
7a291083 JBT |
190 | int i; |
191 | ||
2c69448b JBT |
192 | pr->rq1_skba.os_skbs = 0; |
193 | ||
194 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { | |
195 | pr->rq1_skba.index = index; | |
196 | pr->rq1_skba.os_skbs = fill_wqes; | |
7a291083 | 197 | return; |
2c69448b | 198 | } |
7a291083 | 199 | |
2c69448b | 200 | for (i = 0; i < fill_wqes; i++) { |
7a291083 JBT |
201 | if (!skb_arr_rq1[index]) { |
202 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
203 | EHEA_L_PKT_SIZE); | |
204 | if (!skb_arr_rq1[index]) { | |
2c69448b | 205 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
206 | ehea_error("%s: no mem for skb/%d wqes filled", |
207 | dev->name, i); | |
208 | break; | |
209 | } | |
210 | } | |
211 | index--; | |
212 | index &= max_index_mask; | |
2c69448b | 213 | adder++; |
7a291083 | 214 | } |
2c69448b JBT |
215 | |
216 | if (adder == 0) | |
217 | return; | |
218 | ||
7a291083 | 219 | /* Ring doorbell */ |
2c69448b | 220 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
221 | } |
222 | ||
223 | static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) | |
224 | { | |
225 | int ret = 0; | |
226 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
227 | struct net_device *dev = pr->port->netdev; | |
228 | int i; | |
229 | ||
230 | for (i = 0; i < pr->rq1_skba.len; i++) { | |
231 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); | |
232 | if (!skb_arr_rq1[i]) { | |
233 | ehea_error("%s: no mem for skb/%d wqes filled", | |
234 | dev->name, i); | |
235 | ret = -ENOMEM; | |
236 | goto out; | |
237 | } | |
238 | } | |
239 | /* Ring doorbell */ | |
240 | ehea_update_rq1a(pr->qp, nr_rq1a); | |
241 | out: | |
242 | return ret; | |
243 | } | |
244 | ||
245 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
246 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
247 | int num_wqes, int wqe_type, int packet_size) | |
248 | { | |
249 | struct net_device *dev = pr->port->netdev; | |
250 | struct ehea_qp *qp = pr->qp; | |
251 | struct sk_buff **skb_arr = q_skba->arr; | |
252 | struct ehea_rwqe *rwqe; | |
253 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 254 | int adder = 0; |
7a291083 JBT |
255 | int ret = 0; |
256 | ||
257 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 258 | q_skba->os_skbs = 0; |
7a291083 | 259 | |
2c69448b JBT |
260 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
261 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 262 | return ret; |
2c69448b | 263 | } |
7a291083 JBT |
264 | |
265 | index = q_skba->index; | |
266 | max_index_mask = q_skba->len - 1; | |
267 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 268 | u64 tmp_addr; |
7a291083 JBT |
269 | struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); |
270 | if (!skb) { | |
271 | ehea_error("%s: no mem for skb/%d wqes filled", | |
18604c54 | 272 | pr->port->netdev->name, i); |
7a291083 JBT |
273 | q_skba->os_skbs = fill_wqes - i; |
274 | ret = -ENOMEM; | |
275 | break; | |
276 | } | |
277 | skb_reserve(skb, NET_IP_ALIGN); | |
278 | ||
279 | skb_arr[index] = skb; | |
2c69448b JBT |
280 | tmp_addr = ehea_map_vaddr(skb->data); |
281 | if (tmp_addr == -1) { | |
282 | dev_kfree_skb(skb); | |
283 | q_skba->os_skbs = fill_wqes - i; | |
284 | ret = 0; | |
285 | break; | |
286 | } | |
7a291083 JBT |
287 | |
288 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
289 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 290 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 291 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 292 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
293 | rwqe->sg_list[0].len = packet_size; |
294 | rwqe->data_segments = 1; | |
295 | ||
296 | index++; | |
297 | index &= max_index_mask; | |
2c69448b | 298 | adder++; |
7a291083 | 299 | } |
44c82152 | 300 | |
7a291083 | 301 | q_skba->index = index; |
2c69448b JBT |
302 | if (adder == 0) |
303 | goto out; | |
7a291083 JBT |
304 | |
305 | /* Ring doorbell */ | |
306 | iosync(); | |
307 | if (rq_nr == 2) | |
2c69448b | 308 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 309 | else |
2c69448b | 310 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 311 | out: |
7a291083 JBT |
312 | return ret; |
313 | } | |
314 | ||
315 | ||
316 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
317 | { | |
318 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
319 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
320 | EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); | |
321 | } | |
322 | ||
323 | ||
324 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
325 | { | |
326 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
327 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
328 | EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); | |
329 | } | |
330 | ||
331 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
332 | { | |
333 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
334 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
335 | return 0; | |
336 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
337 | (cqe->header_length == 0)) | |
338 | return 0; | |
339 | return -EINVAL; | |
340 | } | |
341 | ||
342 | static inline void ehea_fill_skb(struct net_device *dev, | |
343 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
344 | { | |
345 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
346 | ||
347 | skb_put(skb, length); | |
348 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
349 | skb->protocol = eth_type_trans(skb, dev); | |
350 | } | |
351 | ||
352 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
353 | int arr_len, | |
354 | struct ehea_cqe *cqe) | |
355 | { | |
356 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
357 | struct sk_buff *skb; | |
358 | void *pref; | |
359 | int x; | |
360 | ||
361 | x = skb_index + 1; | |
362 | x &= (arr_len - 1); | |
363 | ||
364 | pref = skb_array[x]; | |
365 | prefetchw(pref); | |
366 | prefetchw(pref + EHEA_CACHE_LINE); | |
367 | ||
368 | pref = (skb_array[x]->data); | |
369 | prefetch(pref); | |
370 | prefetch(pref + EHEA_CACHE_LINE); | |
371 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
372 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
373 | skb = skb_array[skb_index]; | |
374 | skb_array[skb_index] = NULL; | |
375 | return skb; | |
376 | } | |
377 | ||
378 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
379 | int arr_len, int wqe_index) | |
380 | { | |
381 | struct sk_buff *skb; | |
382 | void *pref; | |
383 | int x; | |
384 | ||
385 | x = wqe_index + 1; | |
386 | x &= (arr_len - 1); | |
387 | ||
388 | pref = skb_array[x]; | |
389 | prefetchw(pref); | |
390 | prefetchw(pref + EHEA_CACHE_LINE); | |
391 | ||
392 | pref = (skb_array[x]->data); | |
393 | prefetchw(pref); | |
394 | prefetchw(pref + EHEA_CACHE_LINE); | |
395 | ||
396 | skb = skb_array[wqe_index]; | |
397 | skb_array[wqe_index] = NULL; | |
398 | return skb; | |
399 | } | |
400 | ||
401 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
402 | struct ehea_cqe *cqe, int *processed_rq2, | |
403 | int *processed_rq3) | |
404 | { | |
405 | struct sk_buff *skb; | |
406 | ||
acbddb59 JBT |
407 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
408 | pr->p_stats.err_tcp_cksum++; | |
409 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
410 | pr->p_stats.err_ip_cksum++; | |
411 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
412 | pr->p_stats.err_frame_crc++; | |
413 | ||
7a291083 JBT |
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) { | |
58dd8258 TK |
425 | if (netif_msg_rx_err(pr->port)) { |
426 | ehea_error("Critical receive error for QP %d. " | |
427 | "Resetting port.", pr->qp->init_attr.qp_nr); | |
428 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
429 | } | |
3bf76b81 | 430 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
431 | return 1; |
432 | } | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
d4dc4ec9 JBT |
437 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
438 | void **tcph, u64 *hdr_flags, void *priv) | |
439 | { | |
440 | struct ehea_cqe *cqe = priv; | |
441 | unsigned int ip_len; | |
442 | struct iphdr *iph; | |
443 | ||
444 | /* non tcp/udp packets */ | |
445 | if (!cqe->header_length) | |
446 | return -1; | |
447 | ||
448 | /* non tcp packet */ | |
449 | skb_reset_network_header(skb); | |
450 | iph = ip_hdr(skb); | |
451 | if (iph->protocol != IPPROTO_TCP) | |
452 | return -1; | |
453 | ||
454 | ip_len = ip_hdrlen(skb); | |
455 | skb_set_transport_header(skb, ip_len); | |
456 | *tcph = tcp_hdr(skb); | |
457 | ||
458 | /* check if ip header and tcp header are complete */ | |
459 | if (iph->tot_len < ip_len + tcp_hdrlen(skb)) | |
460 | return -1; | |
461 | ||
462 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
463 | *iphdr = iph; | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, | |
469 | struct sk_buff *skb) | |
470 | { | |
471 | int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) | |
472 | && pr->port->vgrp; | |
473 | ||
474 | if (use_lro) { | |
475 | if (vlan_extracted) | |
476 | lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, | |
477 | pr->port->vgrp, | |
478 | cqe->vlan_tag, | |
479 | cqe); | |
480 | else | |
481 | lro_receive_skb(&pr->lro_mgr, skb, cqe); | |
482 | } else { | |
483 | if (vlan_extracted) | |
484 | vlan_hwaccel_receive_skb(skb, pr->port->vgrp, | |
485 | cqe->vlan_tag); | |
486 | else | |
487 | netif_receive_skb(skb); | |
488 | } | |
489 | } | |
490 | ||
bea3348e SH |
491 | static int ehea_proc_rwqes(struct net_device *dev, |
492 | struct ehea_port_res *pr, | |
493 | int budget) | |
7a291083 | 494 | { |
18604c54 | 495 | struct ehea_port *port = pr->port; |
7a291083 JBT |
496 | struct ehea_qp *qp = pr->qp; |
497 | struct ehea_cqe *cqe; | |
498 | struct sk_buff *skb; | |
499 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
500 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
501 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
502 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
503 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
504 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
505 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
bea3348e | 506 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
507 | |
508 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
509 | last_wqe_index = 0; | |
7a291083 | 510 | |
7a291083 | 511 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 512 | while ((processed < budget) && cqe) { |
7a291083 JBT |
513 | ehea_inc_rq1(qp); |
514 | processed_rq1++; | |
515 | processed++; | |
7a291083 JBT |
516 | if (netif_msg_rx_status(port)) |
517 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
518 | ||
519 | last_wqe_index = wqe_index; | |
520 | rmb(); | |
521 | if (!ehea_check_cqe(cqe, &rq)) { | |
508d2b5d DM |
522 | if (rq == 1) { |
523 | /* LL RQ1 */ | |
7a291083 JBT |
524 | skb = get_skb_by_index_ll(skb_arr_rq1, |
525 | skb_arr_rq1_len, | |
526 | wqe_index); | |
527 | if (unlikely(!skb)) { | |
528 | if (netif_msg_rx_err(port)) | |
529 | ehea_error("LL rq1: skb=NULL"); | |
18604c54 | 530 | |
bea3348e | 531 | skb = netdev_alloc_skb(dev, |
7a291083 JBT |
532 | EHEA_L_PKT_SIZE); |
533 | if (!skb) | |
534 | break; | |
535 | } | |
508d2b5d | 536 | skb_copy_to_linear_data(skb, ((char *)cqe) + 64, |
d1d25aab | 537 | cqe->num_bytes_transfered - 4); |
bea3348e | 538 | ehea_fill_skb(dev, skb, cqe); |
508d2b5d DM |
539 | } else if (rq == 2) { |
540 | /* RQ2 */ | |
7a291083 JBT |
541 | skb = get_skb_by_index(skb_arr_rq2, |
542 | skb_arr_rq2_len, cqe); | |
543 | if (unlikely(!skb)) { | |
544 | if (netif_msg_rx_err(port)) | |
545 | ehea_error("rq2: skb=NULL"); | |
546 | break; | |
547 | } | |
bea3348e | 548 | ehea_fill_skb(dev, skb, cqe); |
7a291083 | 549 | processed_rq2++; |
508d2b5d DM |
550 | } else { |
551 | /* RQ3 */ | |
7a291083 JBT |
552 | skb = get_skb_by_index(skb_arr_rq3, |
553 | skb_arr_rq3_len, cqe); | |
554 | if (unlikely(!skb)) { | |
555 | if (netif_msg_rx_err(port)) | |
556 | ehea_error("rq3: skb=NULL"); | |
557 | break; | |
558 | } | |
bea3348e | 559 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
560 | processed_rq3++; |
561 | } | |
562 | ||
d4dc4ec9 | 563 | ehea_proc_skb(pr, cqe, skb); |
bea3348e | 564 | dev->last_rx = jiffies; |
18604c54 | 565 | } else { |
acbddb59 | 566 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
567 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
568 | &processed_rq2, | |
569 | &processed_rq3); | |
570 | if (port_reset) | |
571 | break; | |
572 | } | |
573 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
574 | } | |
d4dc4ec9 JBT |
575 | if (use_lro) |
576 | lro_flush_all(&pr->lro_mgr); | |
7a291083 | 577 | |
7a291083 JBT |
578 | pr->rx_packets += processed; |
579 | ||
580 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
581 | ehea_refill_rq2(pr, processed_rq2); | |
582 | ehea_refill_rq3(pr, processed_rq3); | |
583 | ||
bea3348e | 584 | return processed; |
7a291083 JBT |
585 | } |
586 | ||
18604c54 | 587 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 588 | { |
acbddb59 | 589 | struct sk_buff *skb; |
7a291083 JBT |
590 | struct ehea_cq *send_cq = pr->send_cq; |
591 | struct ehea_cqe *cqe; | |
18604c54 | 592 | int quota = my_quota; |
7a291083 JBT |
593 | int cqe_counter = 0; |
594 | int swqe_av = 0; | |
acbddb59 | 595 | int index; |
7a291083 JBT |
596 | unsigned long flags; |
597 | ||
18604c54 | 598 | cqe = ehea_poll_cq(send_cq); |
508d2b5d | 599 | while (cqe && (quota > 0)) { |
18604c54 JBT |
600 | ehea_inc_cq(send_cq); |
601 | ||
7a291083 JBT |
602 | cqe_counter++; |
603 | rmb(); | |
604 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { | |
605 | ehea_error("Send Completion Error: Resetting port"); | |
606 | if (netif_msg_tx_err(pr->port)) | |
607 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
3bf76b81 | 608 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
609 | break; |
610 | } | |
611 | ||
612 | if (netif_msg_tx_done(pr->port)) | |
613 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
614 | ||
615 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
616 | == EHEA_SWQE2_TYPE)) { |
617 | ||
618 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
619 | skb = pr->sq_skba.arr[index]; | |
620 | dev_kfree_skb(skb); | |
621 | pr->sq_skba.arr[index] = NULL; | |
622 | } | |
7a291083 JBT |
623 | |
624 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
625 | quota--; | |
18604c54 JBT |
626 | |
627 | cqe = ehea_poll_cq(send_cq); | |
628 | }; | |
7a291083 JBT |
629 | |
630 | ehea_update_feca(send_cq, cqe_counter); | |
631 | atomic_add(swqe_av, &pr->swqe_avail); | |
632 | ||
633 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 634 | |
7a291083 JBT |
635 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
636 | >= pr->swqe_refill_th)) { | |
637 | netif_wake_queue(pr->port->netdev); | |
638 | pr->queue_stopped = 0; | |
639 | } | |
640 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
641 | ||
18604c54 | 642 | return cqe; |
7a291083 JBT |
643 | } |
644 | ||
18604c54 | 645 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
bea3348e | 646 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 647 | |
bea3348e | 648 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 649 | { |
508d2b5d DM |
650 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, |
651 | napi); | |
bea3348e | 652 | struct net_device *dev = pr->port->netdev; |
18604c54 JBT |
653 | struct ehea_cqe *cqe; |
654 | struct ehea_cqe *cqe_skb = NULL; | |
655 | int force_irq, wqe_index; | |
bea3348e | 656 | int rx = 0; |
18604c54 JBT |
657 | |
658 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
bea3348e SH |
659 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
660 | ||
661 | if (!force_irq) | |
662 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
18604c54 | 663 | |
bea3348e | 664 | while ((rx != budget) || force_irq) { |
18604c54 | 665 | pr->poll_counter = 0; |
bea3348e SH |
666 | force_irq = 0; |
667 | netif_rx_complete(dev, napi); | |
18604c54 JBT |
668 | ehea_reset_cq_ep(pr->recv_cq); |
669 | ehea_reset_cq_ep(pr->send_cq); | |
670 | ehea_reset_cq_n1(pr->recv_cq); | |
671 | ehea_reset_cq_n1(pr->send_cq); | |
672 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); | |
673 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
674 | ||
e542aa6b | 675 | if (!cqe && !cqe_skb) |
bea3348e | 676 | return rx; |
18604c54 | 677 | |
bea3348e SH |
678 | if (!netif_rx_reschedule(dev, napi)) |
679 | return rx; | |
18604c54 | 680 | |
bea3348e SH |
681 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
682 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
683 | } | |
e542aa6b | 684 | |
bea3348e SH |
685 | pr->poll_counter++; |
686 | return rx; | |
7a291083 JBT |
687 | } |
688 | ||
8d22c971 JBT |
689 | #ifdef CONFIG_NET_POLL_CONTROLLER |
690 | static void ehea_netpoll(struct net_device *dev) | |
691 | { | |
692 | struct ehea_port *port = netdev_priv(dev); | |
bea3348e | 693 | int i; |
8d22c971 | 694 | |
bea3348e SH |
695 | for (i = 0; i < port->num_def_qps; i++) |
696 | netif_rx_schedule(dev, &port->port_res[i].napi); | |
8d22c971 JBT |
697 | } |
698 | #endif | |
699 | ||
7d12e780 | 700 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
701 | { |
702 | struct ehea_port_res *pr = param; | |
18604c54 | 703 | |
bea3348e | 704 | netif_rx_schedule(pr->port->netdev, &pr->napi); |
18604c54 | 705 | |
7a291083 JBT |
706 | return IRQ_HANDLED; |
707 | } | |
708 | ||
7d12e780 | 709 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
710 | { |
711 | struct ehea_port *port = param; | |
712 | struct ehea_eqe *eqe; | |
d2db9eea | 713 | struct ehea_qp *qp; |
7a291083 JBT |
714 | u32 qp_token; |
715 | ||
716 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 717 | |
7a291083 | 718 | while (eqe) { |
7a291083 | 719 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
bb3a6449 TK |
720 | ehea_error("QP aff_err: entry=0x%lx, token=0x%x", |
721 | eqe->entry, qp_token); | |
d2db9eea JBT |
722 | |
723 | qp = port->port_res[qp_token].qp; | |
724 | ehea_error_data(port->adapter, qp->fw_handle); | |
bb3a6449 | 725 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
726 | } |
727 | ||
3bf76b81 | 728 | schedule_work(&port->reset_task); |
d2db9eea | 729 | |
7a291083 JBT |
730 | return IRQ_HANDLED; |
731 | } | |
732 | ||
733 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
734 | int logical_port) | |
735 | { | |
736 | int i; | |
737 | ||
1acf2318 | 738 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 739 | if (adapter->port[i]) |
d1d25aab | 740 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 741 | return adapter->port[i]; |
7a291083 JBT |
742 | return NULL; |
743 | } | |
744 | ||
745 | int ehea_sense_port_attr(struct ehea_port *port) | |
746 | { | |
747 | int ret; | |
748 | u64 hret; | |
749 | struct hcp_ehea_port_cb0 *cb0; | |
750 | ||
508d2b5d DM |
751 | /* may be called via ehea_neq_tasklet() */ |
752 | cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); | |
753 | if (!cb0) { | |
7a291083 JBT |
754 | ehea_error("no mem for cb0"); |
755 | ret = -ENOMEM; | |
756 | goto out; | |
757 | } | |
758 | ||
759 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
760 | port->logical_port_id, H_PORT_CB0, | |
761 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
762 | cb0); | |
763 | if (hret != H_SUCCESS) { | |
764 | ret = -EIO; | |
765 | goto out_free; | |
766 | } | |
767 | ||
768 | /* MAC address */ | |
769 | port->mac_addr = cb0->port_mac_addr << 16; | |
770 | ||
508d2b5d | 771 | if (!is_valid_ether_addr((u8 *)&port->mac_addr)) { |
7a291083 JBT |
772 | ret = -EADDRNOTAVAIL; |
773 | goto out_free; | |
774 | } | |
775 | ||
776 | /* Port speed */ | |
777 | switch (cb0->port_speed) { | |
778 | case H_SPEED_10M_H: | |
779 | port->port_speed = EHEA_SPEED_10M; | |
780 | port->full_duplex = 0; | |
781 | break; | |
782 | case H_SPEED_10M_F: | |
783 | port->port_speed = EHEA_SPEED_10M; | |
784 | port->full_duplex = 1; | |
785 | break; | |
786 | case H_SPEED_100M_H: | |
787 | port->port_speed = EHEA_SPEED_100M; | |
788 | port->full_duplex = 0; | |
789 | break; | |
790 | case H_SPEED_100M_F: | |
791 | port->port_speed = EHEA_SPEED_100M; | |
792 | port->full_duplex = 1; | |
793 | break; | |
794 | case H_SPEED_1G_F: | |
795 | port->port_speed = EHEA_SPEED_1G; | |
796 | port->full_duplex = 1; | |
797 | break; | |
798 | case H_SPEED_10G_F: | |
799 | port->port_speed = EHEA_SPEED_10G; | |
800 | port->full_duplex = 1; | |
801 | break; | |
802 | default: | |
803 | port->port_speed = 0; | |
804 | port->full_duplex = 0; | |
805 | break; | |
806 | } | |
807 | ||
e919b593 | 808 | port->autoneg = 1; |
18604c54 | 809 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 810 | |
7a291083 | 811 | /* Number of default QPs */ |
18604c54 JBT |
812 | if (use_mcs) |
813 | port->num_def_qps = cb0->num_default_qps; | |
814 | else | |
815 | port->num_def_qps = 1; | |
7a291083 JBT |
816 | |
817 | if (!port->num_def_qps) { | |
818 | ret = -EINVAL; | |
819 | goto out_free; | |
820 | } | |
821 | ||
18604c54 JBT |
822 | port->num_tx_qps = num_tx_qps; |
823 | ||
824 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
825 | port->num_add_tx_qps = 0; |
826 | else | |
18604c54 | 827 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
828 | |
829 | ret = 0; | |
830 | out_free: | |
831 | if (ret || netif_msg_probe(port)) | |
832 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
833 | kfree(cb0); | |
834 | out: | |
835 | return ret; | |
836 | } | |
837 | ||
838 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
839 | { | |
840 | struct hcp_ehea_port_cb4 *cb4; | |
841 | u64 hret; | |
842 | int ret = 0; | |
843 | ||
a1d261c5 | 844 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
845 | if (!cb4) { |
846 | ehea_error("no mem for cb4"); | |
847 | ret = -ENOMEM; | |
848 | goto out; | |
849 | } | |
850 | ||
851 | cb4->port_speed = port_speed; | |
852 | ||
853 | netif_carrier_off(port->netdev); | |
854 | ||
855 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
856 | port->logical_port_id, | |
857 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
858 | if (hret == H_SUCCESS) { | |
859 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
860 | ||
861 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
862 | port->logical_port_id, | |
863 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
864 | cb4); | |
865 | if (hret == H_SUCCESS) { | |
866 | switch (cb4->port_speed) { | |
867 | case H_SPEED_10M_H: | |
868 | port->port_speed = EHEA_SPEED_10M; | |
869 | port->full_duplex = 0; | |
870 | break; | |
871 | case H_SPEED_10M_F: | |
872 | port->port_speed = EHEA_SPEED_10M; | |
873 | port->full_duplex = 1; | |
874 | break; | |
875 | case H_SPEED_100M_H: | |
876 | port->port_speed = EHEA_SPEED_100M; | |
877 | port->full_duplex = 0; | |
878 | break; | |
879 | case H_SPEED_100M_F: | |
880 | port->port_speed = EHEA_SPEED_100M; | |
881 | port->full_duplex = 1; | |
882 | break; | |
883 | case H_SPEED_1G_F: | |
884 | port->port_speed = EHEA_SPEED_1G; | |
885 | port->full_duplex = 1; | |
886 | break; | |
887 | case H_SPEED_10G_F: | |
888 | port->port_speed = EHEA_SPEED_10G; | |
889 | port->full_duplex = 1; | |
890 | break; | |
891 | default: | |
892 | port->port_speed = 0; | |
893 | port->full_duplex = 0; | |
894 | break; | |
895 | } | |
896 | } else { | |
897 | ehea_error("Failed sensing port speed"); | |
898 | ret = -EIO; | |
899 | } | |
900 | } else { | |
901 | if (hret == H_AUTHORITY) { | |
7674a588 | 902 | ehea_info("Hypervisor denied setting port speed"); |
7a291083 JBT |
903 | ret = -EPERM; |
904 | } else { | |
905 | ret = -EIO; | |
906 | ehea_error("Failed setting port speed"); | |
907 | } | |
908 | } | |
8759cf76 JBT |
909 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
910 | netif_carrier_on(port->netdev); | |
911 | ||
7a291083 JBT |
912 | kfree(cb4); |
913 | out: | |
914 | return ret; | |
915 | } | |
916 | ||
917 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
918 | { | |
919 | int ret; | |
920 | u8 ec; | |
921 | u8 portnum; | |
922 | struct ehea_port *port; | |
923 | ||
924 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
925 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
926 | port = ehea_get_port(adapter, portnum); | |
927 | ||
928 | switch (ec) { | |
929 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
930 | ||
931 | if (!port) { | |
932 | ehea_error("unknown portnum %x", portnum); | |
933 | break; | |
934 | } | |
935 | ||
936 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
937 | if (!netif_carrier_ok(port->netdev)) { | |
1e1675cc | 938 | ret = ehea_sense_port_attr(port); |
7a291083 JBT |
939 | if (ret) { |
940 | ehea_error("failed resensing port " | |
941 | "attributes"); | |
942 | break; | |
943 | } | |
944 | ||
945 | if (netif_msg_link(port)) | |
946 | ehea_info("%s: Logical port up: %dMbps " | |
947 | "%s Duplex", | |
948 | port->netdev->name, | |
949 | port->port_speed, | |
950 | port->full_duplex == | |
951 | 1 ? "Full" : "Half"); | |
952 | ||
953 | netif_carrier_on(port->netdev); | |
954 | netif_wake_queue(port->netdev); | |
955 | } | |
956 | } else | |
957 | if (netif_carrier_ok(port->netdev)) { | |
958 | if (netif_msg_link(port)) | |
959 | ehea_info("%s: Logical port down", | |
960 | port->netdev->name); | |
961 | netif_carrier_off(port->netdev); | |
962 | netif_stop_queue(port->netdev); | |
963 | } | |
964 | ||
965 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 966 | port->phy_link = EHEA_PHY_LINK_UP; |
7a291083 JBT |
967 | if (netif_msg_link(port)) |
968 | ehea_info("%s: Physical port up", | |
969 | port->netdev->name); | |
8759cf76 JBT |
970 | if (prop_carrier_state) |
971 | netif_carrier_on(port->netdev); | |
7a291083 | 972 | } else { |
8759cf76 | 973 | port->phy_link = EHEA_PHY_LINK_DOWN; |
7a291083 JBT |
974 | if (netif_msg_link(port)) |
975 | ehea_info("%s: Physical port down", | |
976 | port->netdev->name); | |
8759cf76 JBT |
977 | if (prop_carrier_state) |
978 | netif_carrier_off(port->netdev); | |
7a291083 JBT |
979 | } |
980 | ||
981 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
982 | ehea_info("External switch port is primary port"); | |
983 | else | |
984 | ehea_info("External switch port is backup port"); | |
985 | ||
986 | break; | |
987 | case EHEA_EC_ADAPTER_MALFUNC: | |
988 | ehea_error("Adapter malfunction"); | |
989 | break; | |
990 | case EHEA_EC_PORT_MALFUNC: | |
991 | ehea_info("Port malfunction: Device: %s", port->netdev->name); | |
992 | netif_carrier_off(port->netdev); | |
993 | netif_stop_queue(port->netdev); | |
994 | break; | |
995 | default: | |
bff0a55f | 996 | ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe); |
7a291083 JBT |
997 | break; |
998 | } | |
999 | } | |
1000 | ||
1001 | static void ehea_neq_tasklet(unsigned long data) | |
1002 | { | |
508d2b5d | 1003 | struct ehea_adapter *adapter = (struct ehea_adapter *)data; |
7a291083 JBT |
1004 | struct ehea_eqe *eqe; |
1005 | u64 event_mask; | |
1006 | ||
1007 | eqe = ehea_poll_eq(adapter->neq); | |
1008 | ehea_debug("eqe=%p", eqe); | |
1009 | ||
1010 | while (eqe) { | |
1011 | ehea_debug("*eqe=%lx", eqe->entry); | |
1012 | ehea_parse_eqe(adapter, eqe->entry); | |
1013 | eqe = ehea_poll_eq(adapter->neq); | |
1014 | ehea_debug("next eqe=%p", eqe); | |
1015 | } | |
1016 | ||
1017 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1018 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1019 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1020 | ||
1021 | ehea_h_reset_events(adapter->handle, | |
1022 | adapter->neq->fw_handle, event_mask); | |
1023 | } | |
1024 | ||
7d12e780 | 1025 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1026 | { |
1027 | struct ehea_adapter *adapter = param; | |
1028 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1029 | return IRQ_HANDLED; | |
1030 | } | |
1031 | ||
1032 | ||
1033 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1034 | { | |
1035 | int ret; | |
1036 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1037 | ||
1038 | ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 | |
1039 | - init_attr->act_nr_rwqes_rq2 | |
1040 | - init_attr->act_nr_rwqes_rq3 - 1); | |
1041 | ||
1042 | ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); | |
1043 | ||
1044 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
1045 | ||
1046 | return ret; | |
1047 | } | |
1048 | ||
1049 | static int ehea_reg_interrupts(struct net_device *dev) | |
1050 | { | |
1051 | struct ehea_port *port = netdev_priv(dev); | |
1052 | struct ehea_port_res *pr; | |
1053 | int i, ret; | |
1054 | ||
7a291083 JBT |
1055 | |
1056 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
1057 | dev->name); | |
1058 | ||
6b08f3ae | 1059 | ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
7a291083 | 1060 | ehea_qp_aff_irq_handler, |
38515e90 | 1061 | IRQF_DISABLED, port->int_aff_name, port); |
7a291083 JBT |
1062 | if (ret) { |
1063 | ehea_error("failed registering irq for qp_aff_irq_handler:" | |
1064 | "ist=%X", port->qp_eq->attr.ist1); | |
1065 | goto out_free_qpeq; | |
1066 | } | |
1067 | ||
1068 | if (netif_msg_ifup(port)) | |
1069 | ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " | |
1070 | "registered", port->qp_eq->attr.ist1); | |
1071 | ||
18604c54 | 1072 | |
7a291083 JBT |
1073 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1074 | pr = &port->port_res[i]; | |
1075 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 | 1076 | "%s-queue%d", dev->name, i); |
6b08f3ae | 1077 | ret = ibmebus_request_irq(pr->eq->attr.ist1, |
18604c54 | 1078 | ehea_recv_irq_handler, |
38515e90 | 1079 | IRQF_DISABLED, pr->int_send_name, |
7a291083 JBT |
1080 | pr); |
1081 | if (ret) { | |
18604c54 | 1082 | ehea_error("failed registering irq for ehea_queue " |
7a291083 | 1083 | "port_res_nr:%d, ist=%X", i, |
18604c54 | 1084 | pr->eq->attr.ist1); |
7a291083 JBT |
1085 | goto out_free_req; |
1086 | } | |
1087 | if (netif_msg_ifup(port)) | |
18604c54 JBT |
1088 | ehea_info("irq_handle 0x%X for function ehea_queue_int " |
1089 | "%d registered", pr->eq->attr.ist1, i); | |
7a291083 JBT |
1090 | } |
1091 | out: | |
1092 | return ret; | |
1093 | ||
18604c54 | 1094 | |
7a291083 JBT |
1095 | out_free_req: |
1096 | while (--i >= 0) { | |
18604c54 | 1097 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1098 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1099 | } |
18604c54 | 1100 | |
7a291083 | 1101 | out_free_qpeq: |
6b08f3ae | 1102 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1103 | i = port->num_def_qps; |
18604c54 | 1104 | |
7a291083 | 1105 | goto out; |
18604c54 | 1106 | |
7a291083 JBT |
1107 | } |
1108 | ||
1109 | static void ehea_free_interrupts(struct net_device *dev) | |
1110 | { | |
1111 | struct ehea_port *port = netdev_priv(dev); | |
1112 | struct ehea_port_res *pr; | |
1113 | int i; | |
1114 | ||
1115 | /* send */ | |
18604c54 | 1116 | |
7a291083 JBT |
1117 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1118 | pr = &port->port_res[i]; | |
6b08f3ae | 1119 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
7a291083 JBT |
1120 | if (netif_msg_intr(port)) |
1121 | ehea_info("free send irq for res %d with handle 0x%X", | |
18604c54 | 1122 | i, pr->eq->attr.ist1); |
7a291083 JBT |
1123 | } |
1124 | ||
1125 | /* associated events */ | |
6b08f3ae | 1126 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 JBT |
1127 | if (netif_msg_intr(port)) |
1128 | ehea_info("associated event interrupt for handle 0x%X freed", | |
1129 | port->qp_eq->attr.ist1); | |
1130 | } | |
1131 | ||
1132 | static int ehea_configure_port(struct ehea_port *port) | |
1133 | { | |
1134 | int ret, i; | |
1135 | u64 hret, mask; | |
1136 | struct hcp_ehea_port_cb0 *cb0; | |
1137 | ||
1138 | ret = -ENOMEM; | |
a1d261c5 | 1139 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1140 | if (!cb0) |
1141 | goto out; | |
1142 | ||
1143 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1144 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1145 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1146 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1147 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1148 | PXLY_RC_VLAN_FILTER) | |
1149 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1150 | ||
18604c54 JBT |
1151 | for (i = 0; i < port->num_mcs; i++) |
1152 | if (use_mcs) | |
1153 | cb0->default_qpn_arr[i] = | |
1154 | port->port_res[i].qp->init_attr.qp_nr; | |
1155 | else | |
1156 | cb0->default_qpn_arr[i] = | |
1157 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1158 | |
7a291083 JBT |
1159 | if (netif_msg_ifup(port)) |
1160 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1161 | ||
1162 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1163 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1164 | ||
1165 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1166 | port->logical_port_id, | |
1167 | H_PORT_CB0, mask, cb0); | |
1168 | ret = -EIO; | |
1169 | if (hret != H_SUCCESS) | |
1170 | goto out_free; | |
1171 | ||
1172 | ret = 0; | |
1173 | ||
1174 | out_free: | |
1175 | kfree(cb0); | |
1176 | out: | |
1177 | return ret; | |
1178 | } | |
1179 | ||
e542aa6b | 1180 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1181 | { |
e542aa6b | 1182 | int ret; |
7a291083 JBT |
1183 | struct ehea_adapter *adapter = pr->port->adapter; |
1184 | ||
e542aa6b JBT |
1185 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1186 | if (ret) | |
7a291083 JBT |
1187 | goto out; |
1188 | ||
e542aa6b JBT |
1189 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1190 | if (ret) | |
1191 | goto out_free; | |
7a291083 JBT |
1192 | |
1193 | return 0; | |
1194 | ||
e542aa6b JBT |
1195 | out_free: |
1196 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1197 | out: |
e542aa6b | 1198 | ehea_error("Generating SMRS failed\n"); |
7a291083 JBT |
1199 | return -EIO; |
1200 | } | |
1201 | ||
e542aa6b | 1202 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1203 | { |
e542aa6b JBT |
1204 | if ((ehea_rem_mr(&pr->send_mr)) |
1205 | || (ehea_rem_mr(&pr->recv_mr))) | |
1206 | return -EIO; | |
1207 | else | |
1208 | return 0; | |
7a291083 JBT |
1209 | } |
1210 | ||
1211 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1212 | { | |
508d2b5d | 1213 | int arr_size = sizeof(void *) * max_q_entries; |
7a291083 JBT |
1214 | |
1215 | q_skba->arr = vmalloc(arr_size); | |
1216 | if (!q_skba->arr) | |
1217 | return -ENOMEM; | |
1218 | ||
1219 | memset(q_skba->arr, 0, arr_size); | |
1220 | ||
1221 | q_skba->len = max_q_entries; | |
1222 | q_skba->index = 0; | |
1223 | q_skba->os_skbs = 0; | |
1224 | ||
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1229 | struct port_res_cfg *pr_cfg, int queue_token) | |
1230 | { | |
1231 | struct ehea_adapter *adapter = port->adapter; | |
1232 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1233 | struct ehea_qp_init_attr *init_attr = NULL; | |
1234 | int ret = -EIO; | |
1235 | ||
1236 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1237 | ||
1238 | pr->port = port; | |
7a291083 JBT |
1239 | spin_lock_init(&pr->xmit_lock); |
1240 | spin_lock_init(&pr->netif_queue); | |
1241 | ||
18604c54 JBT |
1242 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1243 | if (!pr->eq) { | |
1244 | ehea_error("create_eq failed (eq)"); | |
7a291083 JBT |
1245 | goto out_free; |
1246 | } | |
1247 | ||
1248 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1249 | pr->eq->fw_handle, |
7a291083 JBT |
1250 | port->logical_port_id); |
1251 | if (!pr->recv_cq) { | |
1252 | ehea_error("create_cq failed (cq_recv)"); | |
1253 | goto out_free; | |
1254 | } | |
1255 | ||
1256 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1257 | pr->eq->fw_handle, |
7a291083 JBT |
1258 | port->logical_port_id); |
1259 | if (!pr->send_cq) { | |
1260 | ehea_error("create_cq failed (cq_send)"); | |
1261 | goto out_free; | |
1262 | } | |
1263 | ||
1264 | if (netif_msg_ifup(port)) | |
1265 | ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", | |
1266 | pr->send_cq->attr.act_nr_of_cqes, | |
1267 | pr->recv_cq->attr.act_nr_of_cqes); | |
1268 | ||
1269 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1270 | if (!init_attr) { | |
1271 | ret = -ENOMEM; | |
1272 | ehea_error("no mem for ehea_qp_init_attr"); | |
1273 | goto out_free; | |
1274 | } | |
1275 | ||
1276 | init_attr->low_lat_rq1 = 1; | |
1277 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1278 | init_attr->rq_count = 3; | |
1279 | init_attr->qp_token = queue_token; | |
1280 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1281 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1282 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1283 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1284 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1285 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1286 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1287 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1288 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1289 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1290 | init_attr->port_nr = port->logical_port_id; | |
1291 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1292 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1293 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1294 | ||
1295 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1296 | if (!pr->qp) { | |
1297 | ehea_error("create_qp failed"); | |
1298 | ret = -EIO; | |
1299 | goto out_free; | |
1300 | } | |
1301 | ||
1302 | if (netif_msg_ifup(port)) | |
1303 | ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " | |
1304 | "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, | |
1305 | init_attr->act_nr_send_wqes, | |
1306 | init_attr->act_nr_rwqes_rq1, | |
1307 | init_attr->act_nr_rwqes_rq2, | |
1308 | init_attr->act_nr_rwqes_rq3); | |
1309 | ||
1310 | ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); | |
1311 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); | |
1312 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1313 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1314 | if (ret) | |
1315 | goto out_free; | |
1316 | ||
1317 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1318 | if (ehea_gen_smrs(pr) != 0) { | |
1319 | ret = -EIO; | |
1320 | goto out_free; | |
1321 | } | |
18604c54 | 1322 | |
7a291083 JBT |
1323 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1324 | ||
1325 | kfree(init_attr); | |
18604c54 | 1326 | |
bea3348e | 1327 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1328 | |
d4dc4ec9 JBT |
1329 | pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
1330 | pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; | |
1331 | pr->lro_mgr.lro_arr = pr->lro_desc; | |
1332 | pr->lro_mgr.get_skb_header = get_skb_hdr; | |
1333 | pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; | |
1334 | pr->lro_mgr.dev = port->netdev; | |
1335 | pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1336 | pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1337 | ||
7a291083 JBT |
1338 | ret = 0; |
1339 | goto out; | |
1340 | ||
1341 | out_free: | |
1342 | kfree(init_attr); | |
1343 | vfree(pr->sq_skba.arr); | |
1344 | vfree(pr->rq1_skba.arr); | |
1345 | vfree(pr->rq2_skba.arr); | |
1346 | vfree(pr->rq3_skba.arr); | |
1347 | ehea_destroy_qp(pr->qp); | |
1348 | ehea_destroy_cq(pr->send_cq); | |
1349 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1350 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1351 | out: |
1352 | return ret; | |
1353 | } | |
1354 | ||
1355 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1356 | { | |
1357 | int ret, i; | |
1358 | ||
1359 | ret = ehea_destroy_qp(pr->qp); | |
1360 | ||
1361 | if (!ret) { | |
1362 | ehea_destroy_cq(pr->send_cq); | |
1363 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1364 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1365 | |
1366 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1367 | if (pr->rq1_skba.arr[i]) | |
1368 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1369 | ||
1370 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1371 | if (pr->rq2_skba.arr[i]) | |
1372 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1373 | ||
1374 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1375 | if (pr->rq3_skba.arr[i]) | |
1376 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1377 | ||
1378 | for (i = 0; i < pr->sq_skba.len; i++) | |
1379 | if (pr->sq_skba.arr[i]) | |
1380 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1381 | ||
1382 | vfree(pr->rq1_skba.arr); | |
1383 | vfree(pr->rq2_skba.arr); | |
1384 | vfree(pr->rq3_skba.arr); | |
1385 | vfree(pr->sq_skba.arr); | |
1386 | ret = ehea_rem_smrs(pr); | |
1387 | } | |
1388 | return ret; | |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | * The write_* functions store information in swqe which is used by | |
1393 | * the hardware to calculate the ip/tcp/udp checksum | |
1394 | */ | |
1395 | ||
1396 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1397 | const struct sk_buff *skb) | |
1398 | { | |
eddc9ec5 | 1399 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1400 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1401 | } |
1402 | ||
1403 | static inline void write_tcp_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 tcphdr, check)); | |
1408 | ||
1409 | swqe->tcp_end = (u16)skb->len - 1; | |
1410 | } | |
1411 | ||
1412 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1413 | const struct sk_buff *skb) | |
1414 | { | |
1415 | swqe->tcp_offset = | |
1416 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1417 | ||
1418 | swqe->tcp_end = (u16)skb->len - 1; | |
1419 | } | |
1420 | ||
1421 | ||
1422 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1423 | struct ehea_swqe *swqe, u32 lkey) | |
1424 | { | |
1425 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1426 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1427 | int skb_data_size = skb->len - skb->data_len; | |
1428 | int headersize; | |
7a291083 JBT |
1429 | |
1430 | /* Packet is TCP with TSO enabled */ | |
1431 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1432 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1433 | /* copy only eth/ip/tcp headers to immediate data and | |
1434 | * the rest of skb->data to sg1entry | |
1435 | */ | |
ab6a5bb6 | 1436 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 JBT |
1437 | |
1438 | skb_data_size = skb->len - skb->data_len; | |
1439 | ||
1440 | if (skb_data_size >= headersize) { | |
1441 | /* copy immediate data */ | |
d626f62b | 1442 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1443 | swqe->immediate_data_length = headersize; |
1444 | ||
1445 | if (skb_data_size > headersize) { | |
1446 | /* set sg1entry data */ | |
1447 | sg1entry->l_key = lkey; | |
1448 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1449 | sg1entry->vaddr = |
1450 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1451 | swqe->descriptors++; |
1452 | } | |
1453 | } else | |
1454 | ehea_error("cannot handle fragmented headers"); | |
1455 | } | |
1456 | ||
1457 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1458 | struct ehea_swqe *swqe, u32 lkey) | |
1459 | { | |
1460 | int skb_data_size = skb->len - skb->data_len; | |
1461 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1462 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1463 | |
1464 | /* Packet is any nonTSO type | |
1465 | * | |
1466 | * Copy as much as possible skb->data to immediate data and | |
1467 | * the rest to sg1entry | |
1468 | */ | |
1469 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1470 | /* copy immediate data */ | |
d626f62b | 1471 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1472 | |
1473 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1474 | ||
1475 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1476 | /* copy sg1entry data */ | |
1477 | sg1entry->l_key = lkey; | |
1478 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1479 | sg1entry->vaddr = |
1480 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1481 | swqe->descriptors++; |
1482 | } | |
1483 | } else { | |
d626f62b | 1484 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1485 | swqe->immediate_data_length = skb_data_size; |
1486 | } | |
1487 | } | |
1488 | ||
1489 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1490 | struct ehea_swqe *swqe, u32 lkey) | |
1491 | { | |
1492 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1493 | skb_frag_t *frag; | |
1494 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1495 | |
1496 | nfrags = skb_shinfo(skb)->nr_frags; | |
1497 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
508d2b5d | 1498 | sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; |
7a291083 JBT |
1499 | swqe->descriptors = 0; |
1500 | sg1entry_contains_frag_data = 0; | |
1501 | ||
1502 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1503 | write_swqe2_TSO(skb, swqe, lkey); | |
1504 | else | |
1505 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1506 | ||
1507 | /* write descriptors */ | |
1508 | if (nfrags > 0) { | |
1509 | if (swqe->descriptors == 0) { | |
1510 | /* sg1entry not yet used */ | |
1511 | frag = &skb_shinfo(skb)->frags[0]; | |
1512 | ||
1513 | /* copy sg1entry data */ | |
1514 | sg1entry->l_key = lkey; | |
1515 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1516 | sg1entry->vaddr = |
1517 | ehea_map_vaddr(page_address(frag->page) | |
1518 | + frag->page_offset); | |
7a291083 JBT |
1519 | swqe->descriptors++; |
1520 | sg1entry_contains_frag_data = 1; | |
1521 | } | |
1522 | ||
1523 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1524 | ||
1525 | frag = &skb_shinfo(skb)->frags[i]; | |
1526 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1527 | ||
1528 | sgentry->l_key = lkey; | |
1529 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1530 | sgentry->vaddr = |
1531 | ehea_map_vaddr(page_address(frag->page) | |
1532 | + frag->page_offset); | |
7a291083 JBT |
1533 | swqe->descriptors++; |
1534 | } | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1539 | { | |
1540 | int ret = 0; | |
1541 | u64 hret; | |
1542 | u8 reg_type; | |
1543 | ||
1544 | /* De/Register untagged packets */ | |
1545 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1546 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1547 | port->logical_port_id, | |
1548 | reg_type, port->mac_addr, 0, hcallid); | |
1549 | if (hret != H_SUCCESS) { | |
f9e29228 | 1550 | ehea_error("%sregistering bc address failed (tagged)", |
508d2b5d | 1551 | hcallid == H_REG_BCMC ? "" : "de"); |
7a291083 JBT |
1552 | ret = -EIO; |
1553 | goto out_herr; | |
1554 | } | |
1555 | ||
1556 | /* De/Register VLAN packets */ | |
1557 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1558 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1559 | port->logical_port_id, | |
1560 | reg_type, port->mac_addr, 0, hcallid); | |
1561 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1562 | ehea_error("%sregistering bc address failed (vlan)", |
1563 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1564 | ret = -EIO; |
1565 | } | |
1566 | out_herr: | |
1567 | return ret; | |
1568 | } | |
1569 | ||
1570 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1571 | { | |
1572 | struct ehea_port *port = netdev_priv(dev); | |
1573 | struct sockaddr *mac_addr = sa; | |
1574 | struct hcp_ehea_port_cb0 *cb0; | |
1575 | int ret; | |
1576 | u64 hret; | |
1577 | ||
1578 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1579 | ret = -EADDRNOTAVAIL; | |
1580 | goto out; | |
1581 | } | |
1582 | ||
a1d261c5 | 1583 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1584 | if (!cb0) { |
1585 | ehea_error("no mem for cb0"); | |
1586 | ret = -ENOMEM; | |
1587 | goto out; | |
1588 | } | |
1589 | ||
1590 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1591 | ||
1592 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1593 | ||
1594 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1595 | port->logical_port_id, H_PORT_CB0, | |
1596 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1597 | if (hret != H_SUCCESS) { | |
1598 | ret = -EIO; | |
1599 | goto out_free; | |
1600 | } | |
1601 | ||
1602 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1603 | ||
1604 | /* Deregister old MAC in pHYP */ | |
1605 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1606 | if (ret) | |
1607 | goto out_free; | |
1608 | ||
1609 | port->mac_addr = cb0->port_mac_addr << 16; | |
1610 | ||
1611 | /* Register new MAC in pHYP */ | |
1612 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1613 | if (ret) | |
1614 | goto out_free; | |
1615 | ||
1616 | ret = 0; | |
1617 | out_free: | |
1618 | kfree(cb0); | |
1619 | out: | |
1620 | return ret; | |
1621 | } | |
1622 | ||
1623 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1624 | { | |
7674a588 TK |
1625 | if (hret == H_AUTHORITY) |
1626 | ehea_info("Hypervisor denied %sabling promiscuous mode", | |
1627 | enable == 1 ? "en" : "dis"); | |
1628 | else | |
1629 | ehea_error("failed %sabling promiscuous mode", | |
1630 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1631 | } |
1632 | ||
1633 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1634 | { | |
1635 | struct ehea_port *port = netdev_priv(dev); | |
1636 | struct hcp_ehea_port_cb7 *cb7; | |
1637 | u64 hret; | |
1638 | ||
1639 | if ((enable && port->promisc) || (!enable && !port->promisc)) | |
1640 | return; | |
1641 | ||
a1d261c5 | 1642 | cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
7a291083 JBT |
1643 | if (!cb7) { |
1644 | ehea_error("no mem for cb7"); | |
1645 | goto out; | |
1646 | } | |
1647 | ||
1648 | /* Modify Pxs_DUCQPN in CB7 */ | |
1649 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1650 | ||
1651 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1652 | port->logical_port_id, | |
1653 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1654 | if (hret) { | |
1655 | ehea_promiscuous_error(hret, enable); | |
1656 | goto out; | |
1657 | } | |
1658 | ||
1659 | port->promisc = enable; | |
1660 | out: | |
1661 | kfree(cb7); | |
1662 | return; | |
1663 | } | |
1664 | ||
1665 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1666 | u32 hcallid) | |
1667 | { | |
1668 | u64 hret; | |
1669 | u8 reg_type; | |
1670 | ||
1671 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1672 | | EHEA_BCMC_UNTAGGED; | |
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 | if (hret) | |
1678 | goto out; | |
1679 | ||
1680 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1681 | | EHEA_BCMC_VLANID_ALL; | |
1682 | ||
1683 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1684 | port->logical_port_id, | |
1685 | reg_type, mc_mac_addr, 0, hcallid); | |
1686 | out: | |
1687 | return hret; | |
1688 | } | |
1689 | ||
1690 | static int ehea_drop_multicast_list(struct net_device *dev) | |
1691 | { | |
1692 | struct ehea_port *port = netdev_priv(dev); | |
1693 | struct ehea_mc_list *mc_entry = port->mc_list; | |
1694 | struct list_head *pos; | |
1695 | struct list_head *temp; | |
1696 | int ret = 0; | |
1697 | u64 hret; | |
1698 | ||
1699 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
1700 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
1701 | ||
1702 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
1703 | H_DEREG_BCMC); | |
1704 | if (hret) { | |
1705 | ehea_error("failed deregistering mcast MAC"); | |
1706 | ret = -EIO; | |
1707 | } | |
1708 | ||
1709 | list_del(pos); | |
1710 | kfree(mc_entry); | |
1711 | } | |
1712 | return ret; | |
1713 | } | |
1714 | ||
1715 | static void ehea_allmulti(struct net_device *dev, int enable) | |
1716 | { | |
1717 | struct ehea_port *port = netdev_priv(dev); | |
1718 | u64 hret; | |
1719 | ||
1720 | if (!port->allmulti) { | |
1721 | if (enable) { | |
1722 | /* Enable ALLMULTI */ | |
1723 | ehea_drop_multicast_list(dev); | |
1724 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
1725 | if (!hret) | |
1726 | port->allmulti = 1; | |
1727 | else | |
1728 | ehea_error("failed enabling IFF_ALLMULTI"); | |
1729 | } | |
1730 | } else | |
1731 | if (!enable) { | |
1732 | /* Disable ALLMULTI */ | |
1733 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
1734 | if (!hret) | |
1735 | port->allmulti = 0; | |
1736 | else | |
1737 | ehea_error("failed disabling IFF_ALLMULTI"); | |
1738 | } | |
1739 | } | |
1740 | ||
508d2b5d | 1741 | static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) |
7a291083 JBT |
1742 | { |
1743 | struct ehea_mc_list *ehea_mcl_entry; | |
1744 | u64 hret; | |
1745 | ||
1e1675cc | 1746 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 JBT |
1747 | if (!ehea_mcl_entry) { |
1748 | ehea_error("no mem for mcl_entry"); | |
1749 | return; | |
1750 | } | |
1751 | ||
1752 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
1753 | ||
1754 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
1755 | ||
1756 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
1757 | H_REG_BCMC); | |
1758 | if (!hret) | |
1759 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
1760 | else { | |
1761 | ehea_error("failed registering mcast MAC"); | |
1762 | kfree(ehea_mcl_entry); | |
1763 | } | |
1764 | } | |
1765 | ||
1766 | static void ehea_set_multicast_list(struct net_device *dev) | |
1767 | { | |
1768 | struct ehea_port *port = netdev_priv(dev); | |
1769 | struct dev_mc_list *k_mcl_entry; | |
1770 | int ret, i; | |
1771 | ||
1772 | if (dev->flags & IFF_PROMISC) { | |
1773 | ehea_promiscuous(dev, 1); | |
1774 | return; | |
1775 | } | |
1776 | ehea_promiscuous(dev, 0); | |
1777 | ||
1778 | if (dev->flags & IFF_ALLMULTI) { | |
1779 | ehea_allmulti(dev, 1); | |
1780 | return; | |
1781 | } | |
1782 | ehea_allmulti(dev, 0); | |
1783 | ||
1784 | if (dev->mc_count) { | |
1785 | ret = ehea_drop_multicast_list(dev); | |
1786 | if (ret) { | |
1787 | /* Dropping the current multicast list failed. | |
1788 | * Enabling ALL_MULTI is the best we can do. | |
1789 | */ | |
1790 | ehea_allmulti(dev, 1); | |
1791 | } | |
1792 | ||
1793 | if (dev->mc_count > port->adapter->max_mc_mac) { | |
1794 | ehea_info("Mcast registration limit reached (0x%lx). " | |
1795 | "Use ALLMULTI!", | |
1796 | port->adapter->max_mc_mac); | |
1797 | goto out; | |
1798 | } | |
1799 | ||
508d2b5d DM |
1800 | for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++, |
1801 | k_mcl_entry = k_mcl_entry->next) | |
7a291083 | 1802 | ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); |
508d2b5d | 1803 | |
7a291083 JBT |
1804 | } |
1805 | out: | |
1806 | return; | |
1807 | } | |
1808 | ||
1809 | static int ehea_change_mtu(struct net_device *dev, int new_mtu) | |
1810 | { | |
1811 | if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) | |
1812 | return -EINVAL; | |
1813 | dev->mtu = new_mtu; | |
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
1818 | struct ehea_swqe *swqe, u32 lkey) | |
1819 | { | |
1820 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1821 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1822 | |
7a291083 JBT |
1823 | /* IPv4 */ |
1824 | swqe->tx_control |= EHEA_SWQE_CRC | |
1825 | | EHEA_SWQE_IP_CHECKSUM | |
1826 | | EHEA_SWQE_TCP_CHECKSUM | |
1827 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1828 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1829 | ||
1830 | write_ip_start_end(swqe, skb); | |
1831 | ||
eddc9ec5 | 1832 | if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1833 | if ((iph->frag_off & IP_MF) |
1834 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1835 | /* IP fragment, so don't change cs */ |
1836 | swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; | |
1837 | else | |
1838 | write_udp_offset_end(swqe, skb); | |
eddc9ec5 | 1839 | } else if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1840 | write_tcp_offset_end(swqe, skb); |
1841 | } | |
1842 | ||
1843 | /* icmp (big data) and ip segmentation packets (all other ip | |
1844 | packets) do not require any special handling */ | |
1845 | ||
1846 | } else { | |
1847 | /* Other Ethernet Protocol */ | |
1848 | swqe->tx_control |= EHEA_SWQE_CRC | |
1849 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1850 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1851 | } | |
1852 | ||
1853 | write_swqe2_data(skb, dev, swqe, lkey); | |
1854 | } | |
1855 | ||
1856 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
1857 | struct ehea_swqe *swqe) | |
1858 | { | |
1859 | int nfrags = skb_shinfo(skb)->nr_frags; | |
1860 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; | |
1861 | skb_frag_t *frag; | |
1862 | int i; | |
1863 | ||
1864 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1865 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1866 | |
7a291083 JBT |
1867 | /* IPv4 */ |
1868 | write_ip_start_end(swqe, skb); | |
1869 | ||
eddc9ec5 | 1870 | if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1871 | swqe->tx_control |= EHEA_SWQE_CRC |
1872 | | EHEA_SWQE_IP_CHECKSUM | |
1873 | | EHEA_SWQE_TCP_CHECKSUM | |
1874 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1875 | ||
1876 | write_tcp_offset_end(swqe, skb); | |
1877 | ||
eddc9ec5 | 1878 | } else if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1879 | if ((iph->frag_off & IP_MF) |
1880 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1881 | /* IP fragment, so don't change cs */ |
1882 | swqe->tx_control |= EHEA_SWQE_CRC | |
1883 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1884 | else { | |
1885 | swqe->tx_control |= EHEA_SWQE_CRC | |
1886 | | EHEA_SWQE_IP_CHECKSUM | |
1887 | | EHEA_SWQE_TCP_CHECKSUM | |
1888 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1889 | ||
1890 | write_udp_offset_end(swqe, skb); | |
1891 | } | |
1892 | } else { | |
1893 | /* icmp (big data) and | |
1894 | ip segmentation packets (all other ip packets) */ | |
1895 | swqe->tx_control |= EHEA_SWQE_CRC | |
1896 | | EHEA_SWQE_IP_CHECKSUM | |
1897 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1898 | } | |
1899 | } else { | |
1900 | /* Other Ethernet Protocol */ | |
1901 | swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; | |
1902 | } | |
1903 | /* copy (immediate) data */ | |
1904 | if (nfrags == 0) { | |
1905 | /* data is in a single piece */ | |
d626f62b | 1906 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
7a291083 JBT |
1907 | } else { |
1908 | /* first copy data from the skb->data buffer ... */ | |
d626f62b ACM |
1909 | skb_copy_from_linear_data(skb, imm_data, |
1910 | skb->len - skb->data_len); | |
7a291083 JBT |
1911 | imm_data += skb->len - skb->data_len; |
1912 | ||
1913 | /* ... then copy data from the fragments */ | |
1914 | for (i = 0; i < nfrags; i++) { | |
1915 | frag = &skb_shinfo(skb)->frags[i]; | |
1916 | memcpy(imm_data, | |
1917 | page_address(frag->page) + frag->page_offset, | |
1918 | frag->size); | |
1919 | imm_data += frag->size; | |
1920 | } | |
1921 | } | |
1922 | swqe->immediate_data_length = skb->len; | |
1923 | dev_kfree_skb(skb); | |
1924 | } | |
1925 | ||
18604c54 JBT |
1926 | static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
1927 | { | |
1928 | struct tcphdr *tcp; | |
1929 | u32 tmp; | |
1930 | ||
1931 | if ((skb->protocol == htons(ETH_P_IP)) && | |
88ca2d07 | 1932 | (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
508d2b5d DM |
1933 | tcp = (struct tcphdr *)(skb_network_header(skb) + |
1934 | (ip_hdr(skb)->ihl * 4)); | |
18604c54 | 1935 | tmp = (tcp->source + (tcp->dest << 16)) % 31; |
88ca2d07 | 1936 | tmp += ip_hdr(skb)->daddr % 31; |
18604c54 | 1937 | return tmp % num_qps; |
508d2b5d | 1938 | } else |
18604c54 JBT |
1939 | return 0; |
1940 | } | |
1941 | ||
7a291083 JBT |
1942 | static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1943 | { | |
1944 | struct ehea_port *port = netdev_priv(dev); | |
1945 | struct ehea_swqe *swqe; | |
1946 | unsigned long flags; | |
1947 | u32 lkey; | |
1948 | int swqe_index; | |
18604c54 JBT |
1949 | struct ehea_port_res *pr; |
1950 | ||
1951 | pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; | |
1952 | ||
18604c54 JBT |
1953 | if (!spin_trylock(&pr->xmit_lock)) |
1954 | return NETDEV_TX_BUSY; | |
1955 | ||
1956 | if (pr->queue_stopped) { | |
1957 | spin_unlock(&pr->xmit_lock); | |
1958 | return NETDEV_TX_BUSY; | |
1959 | } | |
7a291083 JBT |
1960 | |
1961 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
1962 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
1963 | atomic_dec(&pr->swqe_avail); | |
1964 | ||
1965 | if (skb->len <= SWQE3_MAX_IMM) { | |
1966 | u32 sig_iv = port->sig_comp_iv; | |
1967 | u32 swqe_num = pr->swqe_id_counter; | |
1968 | ehea_xmit3(skb, dev, swqe); | |
1969 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
1970 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
1971 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
1972 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
1973 | sig_iv); | |
1974 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
1975 | pr->swqe_ll_count = 0; | |
1976 | } else | |
1977 | pr->swqe_ll_count += 1; | |
1978 | } else { | |
1979 | swqe->wr_id = | |
1980 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
1981 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 1982 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
1983 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
1984 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
1985 | ||
1986 | pr->sq_skba.index++; | |
1987 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
1988 | ||
1989 | lkey = pr->send_mr.lkey; | |
1990 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 1991 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
1992 | } |
1993 | pr->swqe_id_counter += 1; | |
1994 | ||
1995 | if (port->vgrp && vlan_tx_tag_present(skb)) { | |
1996 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; | |
1997 | swqe->vlan_tag = vlan_tx_tag_get(skb); | |
1998 | } | |
1999 | ||
2000 | if (netif_msg_tx_queued(port)) { | |
2001 | ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); | |
bff0a55f | 2002 | ehea_dump(swqe, 512, "swqe"); |
7a291083 JBT |
2003 | } |
2004 | ||
2c69448b JBT |
2005 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
2006 | netif_stop_queue(dev); | |
2007 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2008 | } | |
44c82152 | 2009 | |
7a291083 | 2010 | ehea_post_swqe(pr->qp, swqe); |
7393b87c | 2011 | pr->tx_packets++; |
7a291083 JBT |
2012 | |
2013 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
2014 | spin_lock_irqsave(&pr->netif_queue, flags); | |
2015 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
acbddb59 | 2016 | pr->p_stats.queue_stopped++; |
7a291083 JBT |
2017 | netif_stop_queue(dev); |
2018 | pr->queue_stopped = 1; | |
2019 | } | |
2020 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
2021 | } | |
2022 | dev->trans_start = jiffies; | |
2023 | spin_unlock(&pr->xmit_lock); | |
2c69448b | 2024 | |
7a291083 JBT |
2025 | return NETDEV_TX_OK; |
2026 | } | |
2027 | ||
2028 | static void ehea_vlan_rx_register(struct net_device *dev, | |
2029 | struct vlan_group *grp) | |
2030 | { | |
2031 | struct ehea_port *port = netdev_priv(dev); | |
2032 | struct ehea_adapter *adapter = port->adapter; | |
2033 | struct hcp_ehea_port_cb1 *cb1; | |
2034 | u64 hret; | |
2035 | ||
2036 | port->vgrp = grp; | |
2037 | ||
a1d261c5 | 2038 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2039 | if (!cb1) { |
2040 | ehea_error("no mem for cb1"); | |
2041 | goto out; | |
2042 | } | |
2043 | ||
dec590c1 | 2044 | memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); |
7a291083 JBT |
2045 | |
2046 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2047 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2048 | if (hret != H_SUCCESS) | |
2049 | ehea_error("modify_ehea_port failed"); | |
2050 | ||
2051 | kfree(cb1); | |
2052 | out: | |
2053 | return; | |
2054 | } | |
2055 | ||
2056 | static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
2057 | { | |
2058 | struct ehea_port *port = netdev_priv(dev); | |
2059 | struct ehea_adapter *adapter = port->adapter; | |
2060 | struct hcp_ehea_port_cb1 *cb1; | |
2061 | int index; | |
2062 | u64 hret; | |
2063 | ||
a1d261c5 | 2064 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2065 | if (!cb1) { |
2066 | ehea_error("no mem for cb1"); | |
2067 | goto out; | |
2068 | } | |
2069 | ||
2070 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2071 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2072 | if (hret != H_SUCCESS) { | |
2073 | ehea_error("query_ehea_port failed"); | |
2074 | goto out; | |
2075 | } | |
2076 | ||
2077 | index = (vid / 64); | |
dec590c1 | 2078 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2079 | |
2080 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2081 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2082 | if (hret != H_SUCCESS) | |
2083 | ehea_error("modify_ehea_port failed"); | |
2084 | out: | |
2085 | kfree(cb1); | |
2086 | return; | |
2087 | } | |
2088 | ||
2089 | static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
2090 | { | |
2091 | struct ehea_port *port = netdev_priv(dev); | |
2092 | struct ehea_adapter *adapter = port->adapter; | |
2093 | struct hcp_ehea_port_cb1 *cb1; | |
2094 | int index; | |
2095 | u64 hret; | |
2096 | ||
5c15bdec | 2097 | vlan_group_set_device(port->vgrp, vid, NULL); |
7a291083 | 2098 | |
a1d261c5 | 2099 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2100 | if (!cb1) { |
2101 | ehea_error("no mem for cb1"); | |
2102 | goto out; | |
2103 | } | |
2104 | ||
2105 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2106 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2107 | if (hret != H_SUCCESS) { | |
2108 | ehea_error("query_ehea_port failed"); | |
2109 | goto out; | |
2110 | } | |
2111 | ||
2112 | index = (vid / 64); | |
dec590c1 | 2113 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2114 | |
2115 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2116 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2117 | if (hret != H_SUCCESS) | |
2118 | ehea_error("modify_ehea_port failed"); | |
2119 | out: | |
2120 | kfree(cb1); | |
2121 | return; | |
2122 | } | |
2123 | ||
2124 | int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) | |
2125 | { | |
2126 | int ret = -EIO; | |
2127 | u64 hret; | |
2128 | u16 dummy16 = 0; | |
2129 | u64 dummy64 = 0; | |
508d2b5d | 2130 | struct hcp_modify_qp_cb0 *cb0; |
7a291083 | 2131 | |
a1d261c5 | 2132 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2133 | if (!cb0) { |
2134 | ret = -ENOMEM; | |
2135 | goto out; | |
2136 | } | |
2137 | ||
2138 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2139 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2140 | if (hret != H_SUCCESS) { | |
2141 | ehea_error("query_ehea_qp failed (1)"); | |
2142 | goto out; | |
2143 | } | |
2144 | ||
2145 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2146 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2147 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2148 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2149 | if (hret != H_SUCCESS) { | |
2150 | ehea_error("modify_ehea_qp failed (1)"); | |
2151 | goto out; | |
2152 | } | |
2153 | ||
2154 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2155 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2156 | if (hret != H_SUCCESS) { | |
2157 | ehea_error("query_ehea_qp failed (2)"); | |
2158 | goto out; | |
2159 | } | |
2160 | ||
2161 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2162 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2163 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2164 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2165 | if (hret != H_SUCCESS) { | |
2166 | ehea_error("modify_ehea_qp failed (2)"); | |
2167 | goto out; | |
2168 | } | |
2169 | ||
2170 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2171 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2172 | if (hret != H_SUCCESS) { | |
2173 | ehea_error("query_ehea_qp failed (3)"); | |
2174 | goto out; | |
2175 | } | |
2176 | ||
2177 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2178 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2179 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2180 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2181 | if (hret != H_SUCCESS) { | |
2182 | ehea_error("modify_ehea_qp failed (3)"); | |
2183 | goto out; | |
2184 | } | |
2185 | ||
2186 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2187 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2188 | if (hret != H_SUCCESS) { | |
2189 | ehea_error("query_ehea_qp failed (4)"); | |
2190 | goto out; | |
2191 | } | |
2192 | ||
2193 | ret = 0; | |
2194 | out: | |
2195 | kfree(cb0); | |
2196 | return ret; | |
2197 | } | |
2198 | ||
2199 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps, | |
2200 | int add_tx_qps) | |
2201 | { | |
2202 | int ret, i; | |
2203 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2204 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2205 | ||
2206 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2207 | EHEA_MAX_ENTRIES_EQ, 1); | |
2208 | if (!port->qp_eq) { | |
2209 | ret = -EINVAL; | |
2210 | ehea_error("ehea_create_eq failed (qp_eq)"); | |
2211 | goto out_kill_eq; | |
2212 | } | |
2213 | ||
2214 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2215 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2216 | pr_cfg.max_entries_sq = sq_entries; |
2217 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2218 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2219 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2220 | ||
2221 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2222 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2223 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2224 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2225 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2226 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2227 | ||
2228 | for (i = 0; i < def_qps; i++) { | |
2229 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2230 | if (ret) | |
2231 | goto out_clean_pr; | |
2232 | } | |
2233 | for (i = def_qps; i < def_qps + add_tx_qps; i++) { | |
2234 | ret = ehea_init_port_res(port, &port->port_res[i], | |
2235 | &pr_cfg_small_rx, i); | |
2236 | if (ret) | |
2237 | goto out_clean_pr; | |
2238 | } | |
2239 | ||
2240 | return 0; | |
2241 | ||
2242 | out_clean_pr: | |
2243 | while (--i >= 0) | |
2244 | ehea_clean_portres(port, &port->port_res[i]); | |
2245 | ||
2246 | out_kill_eq: | |
2247 | ehea_destroy_eq(port->qp_eq); | |
2248 | return ret; | |
2249 | } | |
2250 | ||
2251 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2252 | { | |
2253 | int ret = 0; | |
2254 | int i; | |
2255 | ||
508d2b5d | 2256 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
7a291083 JBT |
2257 | ret |= ehea_clean_portres(port, &port->port_res[i]); |
2258 | ||
2259 | ret |= ehea_destroy_eq(port->qp_eq); | |
2260 | ||
2261 | return ret; | |
2262 | } | |
2263 | ||
35cf2e2e | 2264 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2265 | { |
35cf2e2e TK |
2266 | if (adapter->active_ports) |
2267 | return; | |
1211bb6d TK |
2268 | |
2269 | ehea_rem_mr(&adapter->mr); | |
2270 | } | |
2271 | ||
35cf2e2e | 2272 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2273 | { |
35cf2e2e TK |
2274 | if (adapter->active_ports) |
2275 | return 0; | |
1211bb6d TK |
2276 | |
2277 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2278 | } | |
2279 | ||
7a291083 JBT |
2280 | static int ehea_up(struct net_device *dev) |
2281 | { | |
2282 | int ret, i; | |
2283 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2284 | |
2285 | if (port->state == EHEA_PORT_UP) | |
2286 | return 0; | |
2287 | ||
2288 | ret = ehea_port_res_setup(port, port->num_def_qps, | |
2289 | port->num_add_tx_qps); | |
2290 | if (ret) { | |
2291 | ehea_error("port_res_failed"); | |
2292 | goto out; | |
2293 | } | |
2294 | ||
2295 | /* Set default QP for this port */ | |
2296 | ret = ehea_configure_port(port); | |
2297 | if (ret) { | |
2298 | ehea_error("ehea_configure_port failed. ret:%d", ret); | |
2299 | goto out_clean_pr; | |
2300 | } | |
2301 | ||
7a291083 JBT |
2302 | ret = ehea_reg_interrupts(dev); |
2303 | if (ret) { | |
f9e29228 TK |
2304 | ehea_error("reg_interrupts failed. ret:%d", ret); |
2305 | goto out_clean_pr; | |
7a291083 JBT |
2306 | } |
2307 | ||
508d2b5d | 2308 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
7a291083 JBT |
2309 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); |
2310 | if (ret) { | |
2311 | ehea_error("activate_qp failed"); | |
2312 | goto out_free_irqs; | |
2313 | } | |
2314 | } | |
2315 | ||
508d2b5d | 2316 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 JBT |
2317 | ret = ehea_fill_port_res(&port->port_res[i]); |
2318 | if (ret) { | |
2319 | ehea_error("out_free_irqs"); | |
2320 | goto out_free_irqs; | |
2321 | } | |
2322 | } | |
2323 | ||
2324 | ret = 0; | |
2325 | port->state = EHEA_PORT_UP; | |
2326 | goto out; | |
2327 | ||
2328 | out_free_irqs: | |
2329 | ehea_free_interrupts(dev); | |
2330 | ||
7a291083 JBT |
2331 | out_clean_pr: |
2332 | ehea_clean_all_portres(port); | |
2333 | out: | |
44c82152 TK |
2334 | if (ret) |
2335 | ehea_info("Failed starting %s. ret=%i", dev->name, ret); | |
2336 | ||
7a291083 JBT |
2337 | return ret; |
2338 | } | |
2339 | ||
bea3348e SH |
2340 | static void port_napi_disable(struct ehea_port *port) |
2341 | { | |
2342 | int i; | |
2343 | ||
0173b793 | 2344 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2345 | napi_disable(&port->port_res[i].napi); |
2346 | } | |
2347 | ||
2348 | static void port_napi_enable(struct ehea_port *port) | |
2349 | { | |
2350 | int i; | |
2351 | ||
0173b793 | 2352 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2353 | napi_enable(&port->port_res[i].napi); |
2354 | } | |
2355 | ||
7a291083 JBT |
2356 | static int ehea_open(struct net_device *dev) |
2357 | { | |
2358 | int ret; | |
2359 | struct ehea_port *port = netdev_priv(dev); | |
2360 | ||
2361 | down(&port->port_lock); | |
2362 | ||
2363 | if (netif_msg_ifup(port)) | |
2364 | ehea_info("enabling port %s", dev->name); | |
2365 | ||
2366 | ret = ehea_up(dev); | |
bea3348e SH |
2367 | if (!ret) { |
2368 | port_napi_enable(port); | |
7a291083 | 2369 | netif_start_queue(dev); |
bea3348e | 2370 | } |
7a291083 JBT |
2371 | |
2372 | up(&port->port_lock); | |
2373 | ||
2374 | return ret; | |
2375 | } | |
2376 | ||
2377 | static int ehea_down(struct net_device *dev) | |
2378 | { | |
bea3348e | 2379 | int ret; |
7a291083 JBT |
2380 | struct ehea_port *port = netdev_priv(dev); |
2381 | ||
2382 | if (port->state == EHEA_PORT_DOWN) | |
2383 | return 0; | |
2384 | ||
2385 | ehea_drop_multicast_list(dev); | |
2386 | ehea_free_interrupts(dev); | |
2387 | ||
7a291083 | 2388 | port->state = EHEA_PORT_DOWN; |
44c82152 TK |
2389 | |
2390 | ret = ehea_clean_all_portres(port); | |
2391 | if (ret) | |
2392 | ehea_info("Failed freeing resources for %s. ret=%i", | |
2393 | dev->name, ret); | |
2394 | ||
7a291083 JBT |
2395 | return ret; |
2396 | } | |
2397 | ||
2398 | static int ehea_stop(struct net_device *dev) | |
2399 | { | |
2400 | int ret; | |
2401 | struct ehea_port *port = netdev_priv(dev); | |
2402 | ||
2403 | if (netif_msg_ifdown(port)) | |
2404 | ehea_info("disabling port %s", dev->name); | |
2405 | ||
3bf76b81 | 2406 | flush_scheduled_work(); |
7a291083 JBT |
2407 | down(&port->port_lock); |
2408 | netif_stop_queue(dev); | |
0173b793 | 2409 | port_napi_disable(port); |
7a291083 JBT |
2410 | ret = ehea_down(dev); |
2411 | up(&port->port_lock); | |
2412 | return ret; | |
2413 | } | |
2414 | ||
2c69448b JBT |
2415 | void ehea_purge_sq(struct ehea_qp *orig_qp) |
2416 | { | |
2417 | struct ehea_qp qp = *orig_qp; | |
2418 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2419 | struct ehea_swqe *swqe; | |
2420 | int wqe_index; | |
2421 | int i; | |
2422 | ||
2423 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2424 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2425 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | int ehea_stop_qps(struct net_device *dev) | |
2430 | { | |
2431 | struct ehea_port *port = netdev_priv(dev); | |
2432 | struct ehea_adapter *adapter = port->adapter; | |
508d2b5d | 2433 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2434 | int ret = -EIO; |
2435 | int dret; | |
2436 | int i; | |
2437 | u64 hret; | |
2438 | u64 dummy64 = 0; | |
2439 | u16 dummy16 = 0; | |
2440 | ||
2441 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2442 | if (!cb0) { | |
2443 | ret = -ENOMEM; | |
2444 | goto out; | |
2445 | } | |
2446 | ||
2447 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2448 | struct ehea_port_res *pr = &port->port_res[i]; | |
2449 | struct ehea_qp *qp = pr->qp; | |
2450 | ||
2451 | /* Purge send queue */ | |
2452 | ehea_purge_sq(qp); | |
2453 | ||
2454 | /* Disable queue pair */ | |
2455 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2456 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2457 | cb0); | |
2458 | if (hret != H_SUCCESS) { | |
2459 | ehea_error("query_ehea_qp failed (1)"); | |
2460 | goto out; | |
2461 | } | |
2462 | ||
2463 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2464 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2465 | ||
2466 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2467 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2468 | 1), cb0, &dummy64, | |
2469 | &dummy64, &dummy16, &dummy16); | |
2470 | if (hret != H_SUCCESS) { | |
2471 | ehea_error("modify_ehea_qp failed (1)"); | |
2472 | goto out; | |
2473 | } | |
2474 | ||
2475 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2476 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2477 | cb0); | |
2478 | if (hret != H_SUCCESS) { | |
2479 | ehea_error("query_ehea_qp failed (2)"); | |
2480 | goto out; | |
2481 | } | |
2482 | ||
2483 | /* deregister shared memory regions */ | |
2484 | dret = ehea_rem_smrs(pr); | |
2485 | if (dret) { | |
2486 | ehea_error("unreg shared memory region failed"); | |
2487 | goto out; | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | ret = 0; | |
2492 | out: | |
2493 | kfree(cb0); | |
2494 | ||
2495 | return ret; | |
2496 | } | |
2497 | ||
508d2b5d | 2498 | void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr) |
2c69448b JBT |
2499 | { |
2500 | struct ehea_qp qp = *orig_qp; | |
2501 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2502 | struct ehea_rwqe *rwqe; | |
2503 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2504 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2505 | struct sk_buff *skb; | |
2506 | u32 lkey = pr->recv_mr.lkey; | |
2507 | ||
2508 | ||
2509 | int i; | |
2510 | int index; | |
2511 | ||
2512 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2513 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2514 | rwqe->sg_list[0].l_key = lkey; | |
2515 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2516 | skb = skba_rq2[index]; | |
2517 | if (skb) | |
2518 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2519 | } | |
2520 | ||
2521 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2522 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2523 | rwqe->sg_list[0].l_key = lkey; | |
2524 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2525 | skb = skba_rq3[index]; | |
2526 | if (skb) | |
2527 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | int ehea_restart_qps(struct net_device *dev) | |
2532 | { | |
2533 | struct ehea_port *port = netdev_priv(dev); | |
2534 | struct ehea_adapter *adapter = port->adapter; | |
2535 | int ret = 0; | |
2536 | int i; | |
2537 | ||
508d2b5d | 2538 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2539 | u64 hret; |
2540 | u64 dummy64 = 0; | |
2541 | u16 dummy16 = 0; | |
2542 | ||
2543 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2544 | if (!cb0) { | |
2545 | ret = -ENOMEM; | |
2546 | goto out; | |
2547 | } | |
2548 | ||
2549 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2550 | struct ehea_port_res *pr = &port->port_res[i]; | |
2551 | struct ehea_qp *qp = pr->qp; | |
2552 | ||
2553 | ret = ehea_gen_smrs(pr); | |
2554 | if (ret) { | |
2555 | ehea_error("creation of shared memory regions failed"); | |
2556 | goto out; | |
2557 | } | |
2558 | ||
2559 | ehea_update_rqs(qp, pr); | |
2560 | ||
2561 | /* Enable queue pair */ | |
2562 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2563 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2564 | cb0); | |
2565 | if (hret != H_SUCCESS) { | |
2566 | ehea_error("query_ehea_qp failed (1)"); | |
2567 | goto out; | |
2568 | } | |
2569 | ||
2570 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2571 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2572 | ||
2573 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2574 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2575 | 1), cb0, &dummy64, | |
2576 | &dummy64, &dummy16, &dummy16); | |
2577 | if (hret != H_SUCCESS) { | |
2578 | ehea_error("modify_ehea_qp failed (1)"); | |
2579 | goto out; | |
2580 | } | |
2581 | ||
2582 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2583 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2584 | cb0); | |
2585 | if (hret != H_SUCCESS) { | |
2586 | ehea_error("query_ehea_qp failed (2)"); | |
2587 | goto out; | |
2588 | } | |
2589 | ||
2590 | /* refill entire queue */ | |
2591 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2592 | ehea_refill_rq2(pr, 0); | |
2593 | ehea_refill_rq3(pr, 0); | |
2594 | } | |
2595 | out: | |
2596 | kfree(cb0); | |
2597 | ||
2598 | return ret; | |
2599 | } | |
2600 | ||
c4028958 | 2601 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2602 | { |
2603 | int ret; | |
c4028958 DH |
2604 | struct ehea_port *port = |
2605 | container_of(work, struct ehea_port, reset_task); | |
2606 | struct net_device *dev = port->netdev; | |
7a291083 JBT |
2607 | |
2608 | port->resets++; | |
2609 | down(&port->port_lock); | |
2610 | netif_stop_queue(dev); | |
bea3348e SH |
2611 | |
2612 | port_napi_disable(port); | |
7a291083 | 2613 | |
44c82152 | 2614 | ehea_down(dev); |
7a291083 JBT |
2615 | |
2616 | ret = ehea_up(dev); | |
44c82152 | 2617 | if (ret) |
7a291083 | 2618 | goto out; |
7a291083 | 2619 | |
2c69448b JBT |
2620 | ehea_set_multicast_list(dev); |
2621 | ||
7a291083 JBT |
2622 | if (netif_msg_timer(port)) |
2623 | ehea_info("Device %s resetted successfully", dev->name); | |
2624 | ||
bea3348e SH |
2625 | port_napi_enable(port); |
2626 | ||
7a291083 JBT |
2627 | netif_wake_queue(dev); |
2628 | out: | |
2629 | up(&port->port_lock); | |
2630 | return; | |
2631 | } | |
2632 | ||
44c82152 TK |
2633 | static void ehea_rereg_mrs(struct work_struct *work) |
2634 | { | |
2635 | int ret, i; | |
2636 | struct ehea_adapter *adapter; | |
2637 | ||
2c69448b | 2638 | down(&dlpar_mem_lock); |
44c82152 TK |
2639 | ehea_info("LPAR memory enlarged - re-initializing driver"); |
2640 | ||
2641 | list_for_each_entry(adapter, &adapter_list, list) | |
2642 | if (adapter->active_ports) { | |
2643 | /* Shutdown all ports */ | |
2644 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2645 | struct ehea_port *port = adapter->port[i]; | |
2646 | ||
2647 | if (port) { | |
2648 | struct net_device *dev = port->netdev; | |
2649 | ||
2650 | if (dev->flags & IFF_UP) { | |
44c82152 TK |
2651 | down(&port->port_lock); |
2652 | netif_stop_queue(dev); | |
2c69448b JBT |
2653 | ret = ehea_stop_qps(dev); |
2654 | if (ret) { | |
2655 | up(&port->port_lock); | |
2656 | goto out; | |
2657 | } | |
bea3348e | 2658 | port_napi_disable(port); |
44c82152 TK |
2659 | up(&port->port_lock); |
2660 | } | |
2661 | } | |
2662 | } | |
2663 | ||
2664 | /* Unregister old memory region */ | |
2665 | ret = ehea_rem_mr(&adapter->mr); | |
2666 | if (ret) { | |
2667 | ehea_error("unregister MR failed - driver" | |
2668 | " inoperable!"); | |
2669 | goto out; | |
2670 | } | |
2671 | } | |
2672 | ||
2673 | ehea_destroy_busmap(); | |
44c82152 | 2674 | ret = ehea_create_busmap(); |
2c69448b JBT |
2675 | if (ret) { |
2676 | ehea_error("creating ehea busmap failed"); | |
44c82152 | 2677 | goto out; |
2c69448b | 2678 | } |
44c82152 TK |
2679 | |
2680 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
2681 | ||
2682 | list_for_each_entry(adapter, &adapter_list, list) | |
2683 | if (adapter->active_ports) { | |
2684 | /* Register new memory region */ | |
2685 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2686 | if (ret) { | |
2687 | ehea_error("register MR failed - driver" | |
2688 | " inoperable!"); | |
2689 | goto out; | |
2690 | } | |
2691 | ||
2692 | /* Restart all ports */ | |
2693 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2694 | struct ehea_port *port = adapter->port[i]; | |
2695 | ||
2696 | if (port) { | |
2697 | struct net_device *dev = port->netdev; | |
2698 | ||
2699 | if (dev->flags & IFF_UP) { | |
44c82152 | 2700 | down(&port->port_lock); |
2c69448b JBT |
2701 | port_napi_enable(port); |
2702 | ret = ehea_restart_qps(dev); | |
2703 | if (!ret) | |
44c82152 | 2704 | netif_wake_queue(dev); |
44c82152 TK |
2705 | up(&port->port_lock); |
2706 | } | |
2707 | } | |
2708 | } | |
2709 | } | |
2c69448b JBT |
2710 | up(&dlpar_mem_lock); |
2711 | ehea_info("re-initializing driver complete"); | |
44c82152 TK |
2712 | out: |
2713 | return; | |
2714 | } | |
2715 | ||
7a291083 JBT |
2716 | static void ehea_tx_watchdog(struct net_device *dev) |
2717 | { | |
2718 | struct ehea_port *port = netdev_priv(dev); | |
2719 | ||
2c69448b JBT |
2720 | if (netif_carrier_ok(dev) && |
2721 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
3bf76b81 | 2722 | schedule_work(&port->reset_task); |
7a291083 JBT |
2723 | } |
2724 | ||
2725 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
2726 | { | |
2727 | struct hcp_query_ehea *cb; | |
2728 | u64 hret; | |
2729 | int ret; | |
2730 | ||
a1d261c5 | 2731 | cb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2732 | if (!cb) { |
2733 | ret = -ENOMEM; | |
2734 | goto out; | |
2735 | } | |
2736 | ||
2737 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
2738 | ||
2739 | if (hret != H_SUCCESS) { | |
2740 | ret = -EIO; | |
2741 | goto out_herr; | |
2742 | } | |
2743 | ||
7a291083 JBT |
2744 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
2745 | ret = 0; | |
2746 | ||
2747 | out_herr: | |
2748 | kfree(cb); | |
2749 | out: | |
2750 | return ret; | |
2751 | } | |
2752 | ||
1acf2318 | 2753 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 2754 | { |
7a291083 | 2755 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
2756 | u64 hret; |
2757 | int ret = 0; | |
7a291083 | 2758 | |
1acf2318 | 2759 | *jumbo = 0; |
7a291083 | 2760 | |
1acf2318 | 2761 | /* (Try to) enable *jumbo frames */ |
a1d261c5 | 2762 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2763 | if (!cb4) { |
2764 | ehea_error("no mem for cb4"); | |
1acf2318 JBT |
2765 | ret = -ENOMEM; |
2766 | goto out; | |
7a291083 | 2767 | } else { |
1acf2318 | 2768 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
2769 | port->logical_port_id, |
2770 | H_PORT_CB4, | |
2771 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
2772 | if (hret == H_SUCCESS) { |
2773 | if (cb4->jumbo_frame) | |
1acf2318 | 2774 | *jumbo = 1; |
9c750b7d TK |
2775 | else { |
2776 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
2777 | hret = ehea_h_modify_ehea_port(port->adapter-> |
2778 | handle, | |
9c750b7d | 2779 | port-> |
1acf2318 | 2780 | logical_port_id, |
9c750b7d TK |
2781 | H_PORT_CB4, |
2782 | H_PORT_CB4_JUMBO, | |
2783 | cb4); | |
2784 | if (hret == H_SUCCESS) | |
1acf2318 | 2785 | *jumbo = 1; |
9c750b7d | 2786 | } |
1acf2318 JBT |
2787 | } else |
2788 | ret = -EINVAL; | |
2789 | ||
7a291083 JBT |
2790 | kfree(cb4); |
2791 | } | |
1acf2318 JBT |
2792 | out: |
2793 | return ret; | |
2794 | } | |
2795 | ||
2796 | static ssize_t ehea_show_port_id(struct device *dev, | |
2797 | struct device_attribute *attr, char *buf) | |
2798 | { | |
2799 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 2800 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
2801 | } |
2802 | ||
2803 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
2804 | NULL); | |
2805 | ||
2806 | static void __devinit logical_port_release(struct device *dev) | |
2807 | { | |
2808 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
2809 | of_node_put(port->ofdev.node); | |
2810 | } | |
2811 | ||
2812 | static struct device *ehea_register_port(struct ehea_port *port, | |
2813 | struct device_node *dn) | |
2814 | { | |
2815 | int ret; | |
2816 | ||
2817 | port->ofdev.node = of_node_get(dn); | |
6b08f3ae | 2818 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 2819 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 2820 | |
d1dea38d | 2821 | sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++); |
1acf2318 JBT |
2822 | port->ofdev.dev.release = logical_port_release; |
2823 | ||
2824 | ret = of_device_register(&port->ofdev); | |
2825 | if (ret) { | |
2826 | ehea_error("failed to register device. ret=%d", ret); | |
2827 | goto out; | |
2828 | } | |
2829 | ||
2830 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 2831 | if (ret) { |
1acf2318 JBT |
2832 | ehea_error("failed to register attributes, ret=%d", ret); |
2833 | goto out_unreg_of_dev; | |
2834 | } | |
e542aa6b | 2835 | |
1acf2318 JBT |
2836 | return &port->ofdev.dev; |
2837 | ||
2838 | out_unreg_of_dev: | |
2839 | of_device_unregister(&port->ofdev); | |
2840 | out: | |
2841 | return NULL; | |
2842 | } | |
2843 | ||
2844 | static void ehea_unregister_port(struct ehea_port *port) | |
2845 | { | |
2846 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
2847 | of_device_unregister(&port->ofdev); | |
2848 | } | |
2849 | ||
2850 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, | |
2851 | u32 logical_port_id, | |
2852 | struct device_node *dn) | |
2853 | { | |
2854 | int ret; | |
2855 | struct net_device *dev; | |
2856 | struct ehea_port *port; | |
2857 | struct device *port_dev; | |
2858 | int jumbo; | |
2859 | ||
2860 | /* allocate memory for the port structures */ | |
2861 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
2862 | ||
2863 | if (!dev) { | |
2864 | ehea_error("no mem for net_device"); | |
2865 | ret = -ENOMEM; | |
2866 | goto out_err; | |
2867 | } | |
2868 | ||
2869 | port = netdev_priv(dev); | |
2870 | ||
2871 | sema_init(&port->port_lock, 1); | |
2872 | port->state = EHEA_PORT_DOWN; | |
2873 | port->sig_comp_iv = sq_entries / 10; | |
2874 | ||
2875 | port->adapter = adapter; | |
2876 | port->netdev = dev; | |
2877 | port->logical_port_id = logical_port_id; | |
2878 | ||
2879 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
2880 | ||
2881 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
2882 | if (!port->mc_list) { | |
2883 | ret = -ENOMEM; | |
2884 | goto out_free_ethdev; | |
2885 | } | |
2886 | ||
2887 | INIT_LIST_HEAD(&port->mc_list->list); | |
2888 | ||
2889 | ret = ehea_sense_port_attr(port); | |
2890 | if (ret) | |
2891 | goto out_free_mc_list; | |
2892 | ||
2893 | port_dev = ehea_register_port(port, dn); | |
2894 | if (!port_dev) | |
2895 | goto out_free_mc_list; | |
2896 | ||
2897 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
2898 | |
2899 | /* initialize net_device structure */ | |
7a291083 JBT |
2900 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
2901 | ||
2902 | dev->open = ehea_open; | |
8d22c971 JBT |
2903 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2904 | dev->poll_controller = ehea_netpoll; | |
2905 | #endif | |
7a291083 JBT |
2906 | dev->stop = ehea_stop; |
2907 | dev->hard_start_xmit = ehea_start_xmit; | |
2908 | dev->get_stats = ehea_get_stats; | |
2909 | dev->set_multicast_list = ehea_set_multicast_list; | |
2910 | dev->set_mac_address = ehea_set_mac_addr; | |
2911 | dev->change_mtu = ehea_change_mtu; | |
2912 | dev->vlan_rx_register = ehea_vlan_rx_register; | |
2913 | dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; | |
2914 | dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; | |
2915 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO | |
2916 | | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX | |
2917 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER | |
2918 | | NETIF_F_LLTX; | |
2919 | dev->tx_timeout = &ehea_tx_watchdog; | |
2920 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; | |
2921 | ||
c4028958 | 2922 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 | 2923 | |
f9e29228 TK |
2924 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2925 | if (ret) { | |
2926 | ret = -EIO; | |
2927 | goto out_unreg_port; | |
2928 | } | |
2929 | ||
7a291083 JBT |
2930 | ehea_set_ethtool_ops(dev); |
2931 | ||
2932 | ret = register_netdev(dev); | |
2933 | if (ret) { | |
2934 | ehea_error("register_netdev failed. ret=%d", ret); | |
f9e29228 | 2935 | goto out_dereg_bc; |
7a291083 JBT |
2936 | } |
2937 | ||
d4dc4ec9 JBT |
2938 | port->lro_max_aggr = lro_max_aggr; |
2939 | ||
1acf2318 | 2940 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 2941 | if (ret) |
1acf2318 JBT |
2942 | ehea_error("failed determining jumbo frame status for %s", |
2943 | port->netdev->name); | |
2944 | ||
9c750b7d TK |
2945 | ehea_info("%s: Jumbo frames are %sabled", dev->name, |
2946 | jumbo == 1 ? "en" : "dis"); | |
2947 | ||
44c82152 TK |
2948 | adapter->active_ports++; |
2949 | ||
1acf2318 | 2950 | return port; |
7a291083 | 2951 | |
f9e29228 TK |
2952 | out_dereg_bc: |
2953 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
2954 | ||
1acf2318 JBT |
2955 | out_unreg_port: |
2956 | ehea_unregister_port(port); | |
2957 | ||
2958 | out_free_mc_list: | |
7a291083 | 2959 | kfree(port->mc_list); |
1acf2318 JBT |
2960 | |
2961 | out_free_ethdev: | |
2962 | free_netdev(dev); | |
2963 | ||
2964 | out_err: | |
2965 | ehea_error("setting up logical port with id=%d failed, ret=%d", | |
2966 | logical_port_id, ret); | |
2967 | return NULL; | |
2968 | } | |
2969 | ||
2970 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
2971 | { | |
2972 | unregister_netdev(port->netdev); | |
2973 | ehea_unregister_port(port); | |
f9e29228 | 2974 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
1acf2318 JBT |
2975 | kfree(port->mc_list); |
2976 | free_netdev(port->netdev); | |
44c82152 | 2977 | port->adapter->active_ports--; |
7a291083 JBT |
2978 | } |
2979 | ||
2980 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
2981 | { | |
1acf2318 JBT |
2982 | struct device_node *lhea_dn; |
2983 | struct device_node *eth_dn = NULL; | |
d1d25aab | 2984 | |
9f9a3b8a | 2985 | const u32 *dn_log_port_id; |
1acf2318 JBT |
2986 | int i = 0; |
2987 | ||
6b08f3ae | 2988 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 2989 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 2990 | |
40cd3a45 | 2991 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 2992 | NULL); |
1acf2318 JBT |
2993 | if (!dn_log_port_id) { |
2994 | ehea_error("bad device node: eth_dn name=%s", | |
2995 | eth_dn->full_name); | |
2996 | continue; | |
2997 | } | |
7a291083 | 2998 | |
1211bb6d TK |
2999 | if (ehea_add_adapter_mr(adapter)) { |
3000 | ehea_error("creating MR failed"); | |
3001 | of_node_put(eth_dn); | |
3002 | return -EIO; | |
3003 | } | |
3004 | ||
1acf2318 JBT |
3005 | adapter->port[i] = ehea_setup_single_port(adapter, |
3006 | *dn_log_port_id, | |
3007 | eth_dn); | |
7a291083 | 3008 | if (adapter->port[i]) |
1acf2318 | 3009 | ehea_info("%s -> logical port id #%d", |
e542aa6b | 3010 | adapter->port[i]->netdev->name, |
1acf2318 | 3011 | *dn_log_port_id); |
1211bb6d TK |
3012 | else |
3013 | ehea_remove_adapter_mr(adapter); | |
3014 | ||
1acf2318 | 3015 | i++; |
1eef4e04 | 3016 | }; |
7a291083 | 3017 | |
1211bb6d | 3018 | return 0; |
1acf2318 JBT |
3019 | } |
3020 | ||
e542aa6b JBT |
3021 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3022 | u32 logical_port_id) | |
1acf2318 JBT |
3023 | { |
3024 | struct device_node *lhea_dn; | |
3025 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3026 | const u32 *dn_log_port_id; |
1acf2318 | 3027 | |
6b08f3ae | 3028 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 3029 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3030 | |
40cd3a45 | 3031 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3032 | NULL); |
1acf2318 JBT |
3033 | if (dn_log_port_id) |
3034 | if (*dn_log_port_id == logical_port_id) | |
3035 | return eth_dn; | |
1eef4e04 | 3036 | }; |
1acf2318 JBT |
3037 | |
3038 | return NULL; | |
3039 | } | |
3040 | ||
3041 | static ssize_t ehea_probe_port(struct device *dev, | |
3042 | struct device_attribute *attr, | |
3043 | const char *buf, size_t count) | |
3044 | { | |
3045 | struct ehea_adapter *adapter = dev->driver_data; | |
3046 | struct ehea_port *port; | |
3047 | struct device_node *eth_dn = NULL; | |
3048 | int i; | |
3049 | ||
3050 | u32 logical_port_id; | |
3051 | ||
a8e34fda | 3052 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3053 | |
3054 | port = ehea_get_port(adapter, logical_port_id); | |
3055 | ||
3056 | if (port) { | |
3057 | ehea_info("adding port with logical port id=%d failed. port " | |
3058 | "already configured as %s.", logical_port_id, | |
3059 | port->netdev->name); | |
3060 | return -EINVAL; | |
7a291083 | 3061 | } |
e542aa6b | 3062 | |
1acf2318 | 3063 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3064 | |
1acf2318 JBT |
3065 | if (!eth_dn) { |
3066 | ehea_info("no logical port with id %d found", logical_port_id); | |
3067 | return -EINVAL; | |
3068 | } | |
e542aa6b | 3069 | |
1211bb6d TK |
3070 | if (ehea_add_adapter_mr(adapter)) { |
3071 | ehea_error("creating MR failed"); | |
3072 | return -EIO; | |
3073 | } | |
3074 | ||
1acf2318 | 3075 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3076 | |
1eef4e04 JBT |
3077 | of_node_put(eth_dn); |
3078 | ||
1acf2318 | 3079 | if (port) { |
508d2b5d | 3080 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3081 | if (!adapter->port[i]) { |
3082 | adapter->port[i] = port; | |
3083 | break; | |
3084 | } | |
7a291083 | 3085 | |
1acf2318 JBT |
3086 | ehea_info("added %s (logical port id=%d)", port->netdev->name, |
3087 | logical_port_id); | |
1211bb6d TK |
3088 | } else { |
3089 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3090 | return -EIO; |
1211bb6d | 3091 | } |
7a291083 | 3092 | |
1acf2318 JBT |
3093 | return (ssize_t) count; |
3094 | } | |
3095 | ||
3096 | static ssize_t ehea_remove_port(struct device *dev, | |
3097 | struct device_attribute *attr, | |
3098 | const char *buf, size_t count) | |
3099 | { | |
3100 | struct ehea_adapter *adapter = dev->driver_data; | |
3101 | struct ehea_port *port; | |
3102 | int i; | |
3103 | u32 logical_port_id; | |
3104 | ||
a8e34fda | 3105 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3106 | |
3107 | port = ehea_get_port(adapter, logical_port_id); | |
3108 | ||
3109 | if (port) { | |
3110 | ehea_info("removed %s (logical port id=%d)", port->netdev->name, | |
3111 | logical_port_id); | |
3112 | ||
3113 | ehea_shutdown_single_port(port); | |
3114 | ||
508d2b5d | 3115 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3116 | if (adapter->port[i] == port) { |
3117 | adapter->port[i] = NULL; | |
3118 | break; | |
3119 | } | |
3120 | } else { | |
3121 | ehea_error("removing port with logical port id=%d failed. port " | |
3122 | "not configured.", logical_port_id); | |
3123 | return -EINVAL; | |
3124 | } | |
3125 | ||
1211bb6d TK |
3126 | ehea_remove_adapter_mr(adapter); |
3127 | ||
1acf2318 JBT |
3128 | return (ssize_t) count; |
3129 | } | |
3130 | ||
3131 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
3132 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
3133 | ||
6b08f3ae | 3134 | int ehea_create_device_sysfs(struct of_device *dev) |
1acf2318 | 3135 | { |
6b08f3ae | 3136 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3137 | if (ret) |
3138 | goto out; | |
3139 | ||
6b08f3ae | 3140 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3141 | out: |
7a291083 JBT |
3142 | return ret; |
3143 | } | |
3144 | ||
6b08f3ae | 3145 | void ehea_remove_device_sysfs(struct of_device *dev) |
1acf2318 | 3146 | { |
6b08f3ae JF |
3147 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3148 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3149 | } |
3150 | ||
6b08f3ae | 3151 | static int __devinit ehea_probe_adapter(struct of_device *dev, |
1acf2318 | 3152 | const struct of_device_id *id) |
7a291083 JBT |
3153 | { |
3154 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3155 | const u64 *adapter_handle; |
7a291083 JBT |
3156 | int ret; |
3157 | ||
6b08f3ae | 3158 | if (!dev || !dev->node) { |
1eef4e04 JBT |
3159 | ehea_error("Invalid ibmebus device probed"); |
3160 | return -EINVAL; | |
3161 | } | |
3162 | ||
7a291083 JBT |
3163 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
3164 | if (!adapter) { | |
3165 | ret = -ENOMEM; | |
6b08f3ae | 3166 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3167 | goto out; |
3168 | } | |
3169 | ||
44c82152 TK |
3170 | list_add(&adapter->list, &adapter_list); |
3171 | ||
6b08f3ae | 3172 | adapter->ofdev = dev; |
1acf2318 | 3173 | |
6b08f3ae | 3174 | adapter_handle = of_get_property(dev->node, "ibm,hea-handle", |
d1d25aab | 3175 | NULL); |
061bf3cd TK |
3176 | if (adapter_handle) |
3177 | adapter->handle = *adapter_handle; | |
3178 | ||
3179 | if (!adapter->handle) { | |
6b08f3ae JF |
3180 | dev_err(&dev->dev, "failed getting handle for adapter" |
3181 | " '%s'\n", dev->node->full_name); | |
7a291083 JBT |
3182 | ret = -ENODEV; |
3183 | goto out_free_ad; | |
3184 | } | |
3185 | ||
7a291083 JBT |
3186 | adapter->pd = EHEA_PD_ID; |
3187 | ||
6b08f3ae | 3188 | dev->dev.driver_data = adapter; |
7a291083 | 3189 | |
7a291083 JBT |
3190 | |
3191 | /* initialize adapter and ports */ | |
3192 | /* get adapter properties */ | |
3193 | ret = ehea_sense_adapter_attr(adapter); | |
3194 | if (ret) { | |
898eb71c | 3195 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3196 | goto out_free_ad; |
7a291083 | 3197 | } |
7a291083 JBT |
3198 | |
3199 | adapter->neq = ehea_create_eq(adapter, | |
3200 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3201 | if (!adapter->neq) { | |
1eef4e04 | 3202 | ret = -EIO; |
898eb71c | 3203 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3204 | goto out_free_ad; |
7a291083 JBT |
3205 | } |
3206 | ||
3207 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3208 | (unsigned long)adapter); | |
3209 | ||
6b08f3ae | 3210 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
38515e90 | 3211 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
3212 | "ehea_neq", adapter); |
3213 | if (ret) { | |
898eb71c | 3214 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
7a291083 JBT |
3215 | goto out_kill_eq; |
3216 | } | |
3217 | ||
1eef4e04 JBT |
3218 | ret = ehea_create_device_sysfs(dev); |
3219 | if (ret) | |
3bf76b81 | 3220 | goto out_free_irq; |
1acf2318 | 3221 | |
7a291083 JBT |
3222 | ret = ehea_setup_ports(adapter); |
3223 | if (ret) { | |
898eb71c | 3224 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3225 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3226 | } |
3227 | ||
3228 | ret = 0; | |
3229 | goto out; | |
3230 | ||
1acf2318 JBT |
3231 | out_rem_dev_sysfs: |
3232 | ehea_remove_device_sysfs(dev); | |
3233 | ||
7a291083 | 3234 | out_free_irq: |
6b08f3ae | 3235 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
7a291083 JBT |
3236 | |
3237 | out_kill_eq: | |
3238 | ehea_destroy_eq(adapter->neq); | |
3239 | ||
7a291083 JBT |
3240 | out_free_ad: |
3241 | kfree(adapter); | |
3242 | out: | |
3243 | return ret; | |
3244 | } | |
3245 | ||
6b08f3ae | 3246 | static int __devexit ehea_remove(struct of_device *dev) |
7a291083 | 3247 | { |
6b08f3ae | 3248 | struct ehea_adapter *adapter = dev->dev.driver_data; |
7a291083 JBT |
3249 | int i; |
3250 | ||
1acf2318 | 3251 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3252 | if (adapter->port[i]) { |
3253 | ehea_shutdown_single_port(adapter->port[i]); | |
3254 | adapter->port[i] = NULL; | |
3255 | } | |
1acf2318 JBT |
3256 | |
3257 | ehea_remove_device_sysfs(dev); | |
3258 | ||
3bf76b81 | 3259 | flush_scheduled_work(); |
7a291083 | 3260 | |
6b08f3ae | 3261 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3262 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3263 | |
3264 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3265 | ehea_remove_adapter_mr(adapter); |
44c82152 TK |
3266 | list_del(&adapter->list); |
3267 | ||
7a291083 | 3268 | kfree(adapter); |
44c82152 | 3269 | |
7a291083 JBT |
3270 | return 0; |
3271 | } | |
3272 | ||
2a6f4e49 JBT |
3273 | static int ehea_reboot_notifier(struct notifier_block *nb, |
3274 | unsigned long action, void *unused) | |
3275 | { | |
3276 | if (action == SYS_RESTART) { | |
3277 | ehea_info("Reboot: freeing all eHEA resources"); | |
3278 | ibmebus_unregister_driver(&ehea_driver); | |
3279 | } | |
3280 | return NOTIFY_DONE; | |
3281 | } | |
3282 | ||
3283 | static struct notifier_block ehea_reboot_nb = { | |
508d2b5d | 3284 | .notifier_call = ehea_reboot_notifier, |
2a6f4e49 JBT |
3285 | }; |
3286 | ||
7a291083 JBT |
3287 | static int check_module_parm(void) |
3288 | { | |
3289 | int ret = 0; | |
3290 | ||
3291 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3292 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
3293 | ehea_info("Bad parameter: rq1_entries"); | |
3294 | ret = -EINVAL; | |
3295 | } | |
3296 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3297 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
3298 | ehea_info("Bad parameter: rq2_entries"); | |
3299 | ret = -EINVAL; | |
3300 | } | |
3301 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3302 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
3303 | ehea_info("Bad parameter: rq3_entries"); | |
3304 | ret = -EINVAL; | |
3305 | } | |
3306 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3307 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
3308 | ehea_info("Bad parameter: sq_entries"); | |
3309 | ret = -EINVAL; | |
3310 | } | |
3311 | ||
3312 | return ret; | |
3313 | } | |
3314 | ||
4c3ca4da JBT |
3315 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3316 | char *buf) | |
3317 | { | |
3318 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3319 | } | |
3320 | ||
3321 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3322 | ehea_show_capabilities, NULL); | |
3323 | ||
7a291083 JBT |
3324 | int __init ehea_module_init(void) |
3325 | { | |
3326 | int ret; | |
3327 | ||
3328 | printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", | |
3329 | DRV_VERSION); | |
3330 | ||
44c82152 TK |
3331 | |
3332 | INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); | |
2c69448b | 3333 | sema_init(&dlpar_mem_lock, 1); |
44c82152 | 3334 | |
7a291083 JBT |
3335 | ret = check_module_parm(); |
3336 | if (ret) | |
3337 | goto out; | |
44c82152 TK |
3338 | |
3339 | ret = ehea_create_busmap(); | |
3340 | if (ret) | |
3341 | goto out; | |
3342 | ||
2a6f4e49 JBT |
3343 | register_reboot_notifier(&ehea_reboot_nb); |
3344 | ||
7a291083 | 3345 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3346 | if (ret) { |
7a291083 | 3347 | ehea_error("failed registering eHEA device driver on ebus"); |
4c3ca4da JBT |
3348 | goto out; |
3349 | } | |
3350 | ||
3351 | ret = driver_create_file(&ehea_driver.driver, | |
3352 | &driver_attr_capabilities); | |
3353 | if (ret) { | |
3354 | ehea_error("failed to register capabilities attribute, ret=%d", | |
3355 | ret); | |
2a6f4e49 | 3356 | unregister_reboot_notifier(&ehea_reboot_nb); |
4c3ca4da JBT |
3357 | ibmebus_unregister_driver(&ehea_driver); |
3358 | goto out; | |
3359 | } | |
7a291083 JBT |
3360 | |
3361 | out: | |
3362 | return ret; | |
3363 | } | |
3364 | ||
3365 | static void __exit ehea_module_exit(void) | |
3366 | { | |
3bf76b81 | 3367 | flush_scheduled_work(); |
4c3ca4da | 3368 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3369 | ibmebus_unregister_driver(&ehea_driver); |
2a6f4e49 | 3370 | unregister_reboot_notifier(&ehea_reboot_nb); |
44c82152 | 3371 | ehea_destroy_busmap(); |
7a291083 JBT |
3372 | } |
3373 | ||
3374 | module_init(ehea_module_init); | |
3375 | module_exit(ehea_module_exit); |