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7a291083 JBT |
1 | /* |
2 | * linux/drivers/net/ehea/ehea_main.c | |
3 | * | |
4 | * eHEA ethernet device driver for IBM eServer System p | |
5 | * | |
6 | * (C) Copyright IBM Corp. 2006 | |
7 | * | |
8 | * Authors: | |
9 | * Christoph Raisch <raisch@de.ibm.com> | |
10 | * Jan-Bernd Themann <themann@de.ibm.com> | |
11 | * Thomas Klein <tklein@de.ibm.com> | |
12 | * | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #include <linux/in.h> | |
30 | #include <linux/ip.h> | |
31 | #include <linux/tcp.h> | |
32 | #include <linux/udp.h> | |
33 | #include <linux/if.h> | |
34 | #include <linux/list.h> | |
35 | #include <linux/if_ether.h> | |
36 | #include <net/ip.h> | |
37 | ||
38 | #include "ehea.h" | |
39 | #include "ehea_qmr.h" | |
40 | #include "ehea_phyp.h" | |
41 | ||
42 | ||
43 | MODULE_LICENSE("GPL"); | |
44 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
45 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
46 | MODULE_VERSION(DRV_VERSION); | |
47 | ||
48 | ||
49 | static int msg_level = -1; | |
50 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
51 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
52 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
53 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
18604c54 | 54 | static int use_mcs = 0; |
d4dc4ec9 JBT |
55 | static int use_lro = 0; |
56 | static int lro_max_aggr = EHEA_LRO_MAX_AGGR; | |
18604c54 | 57 | static int num_tx_qps = EHEA_NUM_TX_QP; |
8759cf76 | 58 | static int prop_carrier_state = 0; |
7a291083 JBT |
59 | |
60 | module_param(msg_level, int, 0); | |
61 | module_param(rq1_entries, int, 0); | |
62 | module_param(rq2_entries, int, 0); | |
63 | module_param(rq3_entries, int, 0); | |
64 | module_param(sq_entries, int, 0); | |
8759cf76 | 65 | module_param(prop_carrier_state, int, 0); |
18604c54 | 66 | module_param(use_mcs, int, 0); |
d4dc4ec9 JBT |
67 | module_param(use_lro, int, 0); |
68 | module_param(lro_max_aggr, int, 0); | |
18604c54 | 69 | module_param(num_tx_qps, int, 0); |
7a291083 | 70 | |
18604c54 | 71 | MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
7a291083 | 72 | MODULE_PARM_DESC(msg_level, "msg_level"); |
8759cf76 JBT |
73 | MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
74 | "port to stack. 1:yes, 0:no. Default = 0 "); | |
7a291083 JBT |
75 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
76 | "[2^x - 1], x = [6..14]. Default = " | |
77 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); | |
78 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
79 | "[2^x - 1], x = [6..14]. Default = " | |
80 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); | |
81 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
82 | "[2^x - 1], x = [6..14]. Default = " | |
83 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); | |
84 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
85 | "[2^x - 1], x = [6..14]. Default = " | |
86 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); | |
18072a5b | 87 | MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
7a291083 | 88 | |
d4dc4ec9 JBT |
89 | MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " |
90 | __MODULE_STRING(EHEA_LRO_MAX_AGGR)); | |
91 | MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " | |
92 | "Default = 0"); | |
93 | ||
d1dea38d | 94 | static int port_name_cnt = 0; |
44c82152 TK |
95 | static LIST_HEAD(adapter_list); |
96 | u64 ehea_driver_flags = 0; | |
44c82152 TK |
97 | struct work_struct ehea_rereg_mr_task; |
98 | ||
2c69448b | 99 | struct semaphore dlpar_mem_lock; |
d1dea38d | 100 | |
6b08f3ae | 101 | static int __devinit ehea_probe_adapter(struct of_device *dev, |
d1d25aab | 102 | const struct of_device_id *id); |
d1dea38d | 103 | |
6b08f3ae | 104 | static int __devexit ehea_remove(struct of_device *dev); |
d1dea38d TK |
105 | |
106 | static struct of_device_id ehea_device_table[] = { | |
107 | { | |
108 | .name = "lhea", | |
109 | .compatible = "IBM,lhea", | |
110 | }, | |
111 | {}, | |
112 | }; | |
113 | ||
6b08f3ae | 114 | static struct of_platform_driver ehea_driver = { |
d1dea38d | 115 | .name = "ehea", |
6b08f3ae | 116 | .match_table = ehea_device_table, |
d1dea38d TK |
117 | .probe = ehea_probe_adapter, |
118 | .remove = ehea_remove, | |
119 | }; | |
120 | ||
7a291083 JBT |
121 | void ehea_dump(void *adr, int len, char *msg) { |
122 | int x; | |
123 | unsigned char *deb = adr; | |
124 | for (x = 0; x < len; x += 16) { | |
d2db9eea | 125 | printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg, |
7a291083 JBT |
126 | deb, x, *((u64*)&deb[0]), *((u64*)&deb[8])); |
127 | deb += 16; | |
128 | } | |
129 | } | |
130 | ||
131 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) | |
132 | { | |
133 | struct ehea_port *port = netdev_priv(dev); | |
134 | struct net_device_stats *stats = &port->stats; | |
135 | struct hcp_ehea_port_cb2 *cb2; | |
136 | u64 hret, rx_packets; | |
137 | int i; | |
138 | ||
139 | memset(stats, 0, sizeof(*stats)); | |
140 | ||
a1d261c5 | 141 | cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
142 | if (!cb2) { |
143 | ehea_error("no mem for cb2"); | |
144 | goto out; | |
145 | } | |
146 | ||
147 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
148 | port->logical_port_id, | |
149 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
150 | if (hret != H_SUCCESS) { | |
151 | ehea_error("query_ehea_port failed"); | |
152 | goto out_herr; | |
153 | } | |
154 | ||
155 | if (netif_msg_hw(port)) | |
156 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
157 | ||
158 | rx_packets = 0; | |
159 | for (i = 0; i < port->num_def_qps; i++) | |
160 | rx_packets += port->port_res[i].rx_packets; | |
161 | ||
162 | stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp; | |
163 | stats->multicast = cb2->rxmcp; | |
164 | stats->rx_errors = cb2->rxuerr; | |
165 | stats->rx_bytes = cb2->rxo; | |
166 | stats->tx_bytes = cb2->txo; | |
167 | stats->rx_packets = rx_packets; | |
168 | ||
169 | out_herr: | |
170 | kfree(cb2); | |
171 | out: | |
172 | return stats; | |
173 | } | |
174 | ||
175 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
176 | { | |
177 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
178 | struct net_device *dev = pr->port->netdev; | |
179 | int max_index_mask = pr->rq1_skba.len - 1; | |
2c69448b JBT |
180 | int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
181 | int adder = 0; | |
7a291083 JBT |
182 | int i; |
183 | ||
2c69448b JBT |
184 | pr->rq1_skba.os_skbs = 0; |
185 | ||
186 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { | |
187 | pr->rq1_skba.index = index; | |
188 | pr->rq1_skba.os_skbs = fill_wqes; | |
7a291083 | 189 | return; |
2c69448b | 190 | } |
7a291083 | 191 | |
2c69448b | 192 | for (i = 0; i < fill_wqes; i++) { |
7a291083 JBT |
193 | if (!skb_arr_rq1[index]) { |
194 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
195 | EHEA_L_PKT_SIZE); | |
196 | if (!skb_arr_rq1[index]) { | |
2c69448b | 197 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
198 | ehea_error("%s: no mem for skb/%d wqes filled", |
199 | dev->name, i); | |
200 | break; | |
201 | } | |
202 | } | |
203 | index--; | |
204 | index &= max_index_mask; | |
2c69448b | 205 | adder++; |
7a291083 | 206 | } |
2c69448b JBT |
207 | |
208 | if (adder == 0) | |
209 | return; | |
210 | ||
7a291083 | 211 | /* Ring doorbell */ |
2c69448b | 212 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
213 | } |
214 | ||
215 | static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) | |
216 | { | |
217 | int ret = 0; | |
218 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
219 | struct net_device *dev = pr->port->netdev; | |
220 | int i; | |
221 | ||
222 | for (i = 0; i < pr->rq1_skba.len; i++) { | |
223 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); | |
224 | if (!skb_arr_rq1[i]) { | |
225 | ehea_error("%s: no mem for skb/%d wqes filled", | |
226 | dev->name, i); | |
227 | ret = -ENOMEM; | |
228 | goto out; | |
229 | } | |
230 | } | |
231 | /* Ring doorbell */ | |
232 | ehea_update_rq1a(pr->qp, nr_rq1a); | |
233 | out: | |
234 | return ret; | |
235 | } | |
236 | ||
237 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
238 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
239 | int num_wqes, int wqe_type, int packet_size) | |
240 | { | |
241 | struct net_device *dev = pr->port->netdev; | |
242 | struct ehea_qp *qp = pr->qp; | |
243 | struct sk_buff **skb_arr = q_skba->arr; | |
244 | struct ehea_rwqe *rwqe; | |
245 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 246 | int adder = 0; |
7a291083 JBT |
247 | int ret = 0; |
248 | ||
249 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 250 | q_skba->os_skbs = 0; |
7a291083 | 251 | |
2c69448b JBT |
252 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
253 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 254 | return ret; |
2c69448b | 255 | } |
7a291083 JBT |
256 | |
257 | index = q_skba->index; | |
258 | max_index_mask = q_skba->len - 1; | |
259 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 260 | u64 tmp_addr; |
7a291083 JBT |
261 | struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); |
262 | if (!skb) { | |
263 | ehea_error("%s: no mem for skb/%d wqes filled", | |
18604c54 | 264 | pr->port->netdev->name, i); |
7a291083 JBT |
265 | q_skba->os_skbs = fill_wqes - i; |
266 | ret = -ENOMEM; | |
267 | break; | |
268 | } | |
269 | skb_reserve(skb, NET_IP_ALIGN); | |
270 | ||
271 | skb_arr[index] = skb; | |
2c69448b JBT |
272 | tmp_addr = ehea_map_vaddr(skb->data); |
273 | if (tmp_addr == -1) { | |
274 | dev_kfree_skb(skb); | |
275 | q_skba->os_skbs = fill_wqes - i; | |
276 | ret = 0; | |
277 | break; | |
278 | } | |
7a291083 JBT |
279 | |
280 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
281 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 282 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 283 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 284 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
285 | rwqe->sg_list[0].len = packet_size; |
286 | rwqe->data_segments = 1; | |
287 | ||
288 | index++; | |
289 | index &= max_index_mask; | |
2c69448b | 290 | adder++; |
7a291083 | 291 | } |
44c82152 | 292 | |
7a291083 | 293 | q_skba->index = index; |
2c69448b JBT |
294 | if (adder == 0) |
295 | goto out; | |
7a291083 JBT |
296 | |
297 | /* Ring doorbell */ | |
298 | iosync(); | |
299 | if (rq_nr == 2) | |
2c69448b | 300 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 301 | else |
2c69448b | 302 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 303 | out: |
7a291083 JBT |
304 | return ret; |
305 | } | |
306 | ||
307 | ||
308 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
309 | { | |
310 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
311 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
312 | EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); | |
313 | } | |
314 | ||
315 | ||
316 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
317 | { | |
318 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
319 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
320 | EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); | |
321 | } | |
322 | ||
323 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
324 | { | |
325 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
326 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
327 | return 0; | |
328 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
329 | (cqe->header_length == 0)) | |
330 | return 0; | |
331 | return -EINVAL; | |
332 | } | |
333 | ||
334 | static inline void ehea_fill_skb(struct net_device *dev, | |
335 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
336 | { | |
337 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
338 | ||
339 | skb_put(skb, length); | |
340 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
341 | skb->protocol = eth_type_trans(skb, dev); | |
342 | } | |
343 | ||
344 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
345 | int arr_len, | |
346 | struct ehea_cqe *cqe) | |
347 | { | |
348 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
349 | struct sk_buff *skb; | |
350 | void *pref; | |
351 | int x; | |
352 | ||
353 | x = skb_index + 1; | |
354 | x &= (arr_len - 1); | |
355 | ||
356 | pref = skb_array[x]; | |
357 | prefetchw(pref); | |
358 | prefetchw(pref + EHEA_CACHE_LINE); | |
359 | ||
360 | pref = (skb_array[x]->data); | |
361 | prefetch(pref); | |
362 | prefetch(pref + EHEA_CACHE_LINE); | |
363 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
364 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
365 | skb = skb_array[skb_index]; | |
366 | skb_array[skb_index] = NULL; | |
367 | return skb; | |
368 | } | |
369 | ||
370 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
371 | int arr_len, int wqe_index) | |
372 | { | |
373 | struct sk_buff *skb; | |
374 | void *pref; | |
375 | int x; | |
376 | ||
377 | x = wqe_index + 1; | |
378 | x &= (arr_len - 1); | |
379 | ||
380 | pref = skb_array[x]; | |
381 | prefetchw(pref); | |
382 | prefetchw(pref + EHEA_CACHE_LINE); | |
383 | ||
384 | pref = (skb_array[x]->data); | |
385 | prefetchw(pref); | |
386 | prefetchw(pref + EHEA_CACHE_LINE); | |
387 | ||
388 | skb = skb_array[wqe_index]; | |
389 | skb_array[wqe_index] = NULL; | |
390 | return skb; | |
391 | } | |
392 | ||
393 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
394 | struct ehea_cqe *cqe, int *processed_rq2, | |
395 | int *processed_rq3) | |
396 | { | |
397 | struct sk_buff *skb; | |
398 | ||
acbddb59 JBT |
399 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
400 | pr->p_stats.err_tcp_cksum++; | |
401 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
402 | pr->p_stats.err_ip_cksum++; | |
403 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
404 | pr->p_stats.err_frame_crc++; | |
405 | ||
7a291083 JBT |
406 | if (netif_msg_rx_err(pr->port)) { |
407 | ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr); | |
408 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
409 | } | |
410 | ||
411 | if (rq == 2) { | |
412 | *processed_rq2 += 1; | |
413 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
414 | dev_kfree_skb(skb); | |
415 | } else if (rq == 3) { | |
416 | *processed_rq3 += 1; | |
417 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
418 | dev_kfree_skb(skb); | |
419 | } | |
420 | ||
421 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
422 | ehea_error("Critical receive error. Resetting port."); | |
3bf76b81 | 423 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
424 | return 1; |
425 | } | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
d4dc4ec9 JBT |
430 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
431 | void **tcph, u64 *hdr_flags, void *priv) | |
432 | { | |
433 | struct ehea_cqe *cqe = priv; | |
434 | unsigned int ip_len; | |
435 | struct iphdr *iph; | |
436 | ||
437 | /* non tcp/udp packets */ | |
438 | if (!cqe->header_length) | |
439 | return -1; | |
440 | ||
441 | /* non tcp packet */ | |
442 | skb_reset_network_header(skb); | |
443 | iph = ip_hdr(skb); | |
444 | if (iph->protocol != IPPROTO_TCP) | |
445 | return -1; | |
446 | ||
447 | ip_len = ip_hdrlen(skb); | |
448 | skb_set_transport_header(skb, ip_len); | |
449 | *tcph = tcp_hdr(skb); | |
450 | ||
451 | /* check if ip header and tcp header are complete */ | |
452 | if (iph->tot_len < ip_len + tcp_hdrlen(skb)) | |
453 | return -1; | |
454 | ||
455 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
456 | *iphdr = iph; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, | |
462 | struct sk_buff *skb) | |
463 | { | |
464 | int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) | |
465 | && pr->port->vgrp; | |
466 | ||
467 | if (use_lro) { | |
468 | if (vlan_extracted) | |
469 | lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, | |
470 | pr->port->vgrp, | |
471 | cqe->vlan_tag, | |
472 | cqe); | |
473 | else | |
474 | lro_receive_skb(&pr->lro_mgr, skb, cqe); | |
475 | } else { | |
476 | if (vlan_extracted) | |
477 | vlan_hwaccel_receive_skb(skb, pr->port->vgrp, | |
478 | cqe->vlan_tag); | |
479 | else | |
480 | netif_receive_skb(skb); | |
481 | } | |
482 | } | |
483 | ||
bea3348e SH |
484 | static int ehea_proc_rwqes(struct net_device *dev, |
485 | struct ehea_port_res *pr, | |
486 | int budget) | |
7a291083 | 487 | { |
18604c54 | 488 | struct ehea_port *port = pr->port; |
7a291083 JBT |
489 | struct ehea_qp *qp = pr->qp; |
490 | struct ehea_cqe *cqe; | |
491 | struct sk_buff *skb; | |
492 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
493 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
494 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
495 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
496 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
497 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
498 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
bea3348e | 499 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
500 | |
501 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
502 | last_wqe_index = 0; | |
7a291083 | 503 | |
7a291083 | 504 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 505 | while ((processed < budget) && cqe) { |
7a291083 JBT |
506 | ehea_inc_rq1(qp); |
507 | processed_rq1++; | |
508 | processed++; | |
7a291083 JBT |
509 | if (netif_msg_rx_status(port)) |
510 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
511 | ||
512 | last_wqe_index = wqe_index; | |
513 | rmb(); | |
514 | if (!ehea_check_cqe(cqe, &rq)) { | |
515 | if (rq == 1) { /* LL RQ1 */ | |
516 | skb = get_skb_by_index_ll(skb_arr_rq1, | |
517 | skb_arr_rq1_len, | |
518 | wqe_index); | |
519 | if (unlikely(!skb)) { | |
520 | if (netif_msg_rx_err(port)) | |
521 | ehea_error("LL rq1: skb=NULL"); | |
18604c54 | 522 | |
bea3348e | 523 | skb = netdev_alloc_skb(dev, |
7a291083 JBT |
524 | EHEA_L_PKT_SIZE); |
525 | if (!skb) | |
526 | break; | |
527 | } | |
27d7ff46 | 528 | skb_copy_to_linear_data(skb, ((char*)cqe) + 64, |
d1d25aab | 529 | cqe->num_bytes_transfered - 4); |
bea3348e | 530 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
531 | } else if (rq == 2) { /* RQ2 */ |
532 | skb = get_skb_by_index(skb_arr_rq2, | |
533 | skb_arr_rq2_len, cqe); | |
534 | if (unlikely(!skb)) { | |
535 | if (netif_msg_rx_err(port)) | |
536 | ehea_error("rq2: skb=NULL"); | |
537 | break; | |
538 | } | |
bea3348e | 539 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
540 | processed_rq2++; |
541 | } else { /* RQ3 */ | |
542 | skb = get_skb_by_index(skb_arr_rq3, | |
543 | skb_arr_rq3_len, cqe); | |
544 | if (unlikely(!skb)) { | |
545 | if (netif_msg_rx_err(port)) | |
546 | ehea_error("rq3: skb=NULL"); | |
547 | break; | |
548 | } | |
bea3348e | 549 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
550 | processed_rq3++; |
551 | } | |
552 | ||
d4dc4ec9 | 553 | ehea_proc_skb(pr, cqe, skb); |
bea3348e | 554 | dev->last_rx = jiffies; |
18604c54 | 555 | } else { |
acbddb59 | 556 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
557 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
558 | &processed_rq2, | |
559 | &processed_rq3); | |
560 | if (port_reset) | |
561 | break; | |
562 | } | |
563 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
564 | } | |
d4dc4ec9 JBT |
565 | if (use_lro) |
566 | lro_flush_all(&pr->lro_mgr); | |
7a291083 | 567 | |
7a291083 JBT |
568 | pr->rx_packets += processed; |
569 | ||
570 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
571 | ehea_refill_rq2(pr, processed_rq2); | |
572 | ehea_refill_rq3(pr, processed_rq3); | |
573 | ||
bea3348e | 574 | return processed; |
7a291083 JBT |
575 | } |
576 | ||
18604c54 | 577 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 578 | { |
acbddb59 | 579 | struct sk_buff *skb; |
7a291083 JBT |
580 | struct ehea_cq *send_cq = pr->send_cq; |
581 | struct ehea_cqe *cqe; | |
18604c54 | 582 | int quota = my_quota; |
7a291083 JBT |
583 | int cqe_counter = 0; |
584 | int swqe_av = 0; | |
acbddb59 | 585 | int index; |
7a291083 JBT |
586 | unsigned long flags; |
587 | ||
18604c54 JBT |
588 | cqe = ehea_poll_cq(send_cq); |
589 | while(cqe && (quota > 0)) { | |
590 | ehea_inc_cq(send_cq); | |
591 | ||
7a291083 JBT |
592 | cqe_counter++; |
593 | rmb(); | |
594 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { | |
595 | ehea_error("Send Completion Error: Resetting port"); | |
596 | if (netif_msg_tx_err(pr->port)) | |
597 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
3bf76b81 | 598 | schedule_work(&pr->port->reset_task); |
7a291083 JBT |
599 | break; |
600 | } | |
601 | ||
602 | if (netif_msg_tx_done(pr->port)) | |
603 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
604 | ||
605 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
606 | == EHEA_SWQE2_TYPE)) { |
607 | ||
608 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
609 | skb = pr->sq_skba.arr[index]; | |
610 | dev_kfree_skb(skb); | |
611 | pr->sq_skba.arr[index] = NULL; | |
612 | } | |
7a291083 JBT |
613 | |
614 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
615 | quota--; | |
18604c54 JBT |
616 | |
617 | cqe = ehea_poll_cq(send_cq); | |
618 | }; | |
7a291083 JBT |
619 | |
620 | ehea_update_feca(send_cq, cqe_counter); | |
621 | atomic_add(swqe_av, &pr->swqe_avail); | |
622 | ||
623 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 624 | |
7a291083 JBT |
625 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
626 | >= pr->swqe_refill_th)) { | |
627 | netif_wake_queue(pr->port->netdev); | |
628 | pr->queue_stopped = 0; | |
629 | } | |
630 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
631 | ||
18604c54 | 632 | return cqe; |
7a291083 JBT |
633 | } |
634 | ||
18604c54 | 635 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
bea3348e | 636 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 637 | |
bea3348e | 638 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 639 | { |
bea3348e SH |
640 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, napi); |
641 | struct net_device *dev = pr->port->netdev; | |
18604c54 JBT |
642 | struct ehea_cqe *cqe; |
643 | struct ehea_cqe *cqe_skb = NULL; | |
644 | int force_irq, wqe_index; | |
bea3348e | 645 | int rx = 0; |
18604c54 JBT |
646 | |
647 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
bea3348e SH |
648 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
649 | ||
650 | if (!force_irq) | |
651 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
18604c54 | 652 | |
bea3348e | 653 | while ((rx != budget) || force_irq) { |
18604c54 | 654 | pr->poll_counter = 0; |
bea3348e SH |
655 | force_irq = 0; |
656 | netif_rx_complete(dev, napi); | |
18604c54 JBT |
657 | ehea_reset_cq_ep(pr->recv_cq); |
658 | ehea_reset_cq_ep(pr->send_cq); | |
659 | ehea_reset_cq_n1(pr->recv_cq); | |
660 | ehea_reset_cq_n1(pr->send_cq); | |
661 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); | |
662 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
663 | ||
e542aa6b | 664 | if (!cqe && !cqe_skb) |
bea3348e | 665 | return rx; |
18604c54 | 666 | |
bea3348e SH |
667 | if (!netif_rx_reschedule(dev, napi)) |
668 | return rx; | |
18604c54 | 669 | |
bea3348e SH |
670 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
671 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
672 | } | |
e542aa6b | 673 | |
bea3348e SH |
674 | pr->poll_counter++; |
675 | return rx; | |
7a291083 JBT |
676 | } |
677 | ||
8d22c971 JBT |
678 | #ifdef CONFIG_NET_POLL_CONTROLLER |
679 | static void ehea_netpoll(struct net_device *dev) | |
680 | { | |
681 | struct ehea_port *port = netdev_priv(dev); | |
bea3348e | 682 | int i; |
8d22c971 | 683 | |
bea3348e SH |
684 | for (i = 0; i < port->num_def_qps; i++) |
685 | netif_rx_schedule(dev, &port->port_res[i].napi); | |
8d22c971 JBT |
686 | } |
687 | #endif | |
688 | ||
7d12e780 | 689 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
690 | { |
691 | struct ehea_port_res *pr = param; | |
18604c54 | 692 | |
bea3348e | 693 | netif_rx_schedule(pr->port->netdev, &pr->napi); |
18604c54 | 694 | |
7a291083 JBT |
695 | return IRQ_HANDLED; |
696 | } | |
697 | ||
7d12e780 | 698 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
699 | { |
700 | struct ehea_port *port = param; | |
701 | struct ehea_eqe *eqe; | |
d2db9eea | 702 | struct ehea_qp *qp; |
7a291083 JBT |
703 | u32 qp_token; |
704 | ||
705 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 706 | |
7a291083 | 707 | while (eqe) { |
7a291083 | 708 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
bb3a6449 TK |
709 | ehea_error("QP aff_err: entry=0x%lx, token=0x%x", |
710 | eqe->entry, qp_token); | |
d2db9eea JBT |
711 | |
712 | qp = port->port_res[qp_token].qp; | |
713 | ehea_error_data(port->adapter, qp->fw_handle); | |
bb3a6449 | 714 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
715 | } |
716 | ||
3bf76b81 | 717 | schedule_work(&port->reset_task); |
d2db9eea | 718 | |
7a291083 JBT |
719 | return IRQ_HANDLED; |
720 | } | |
721 | ||
722 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
723 | int logical_port) | |
724 | { | |
725 | int i; | |
726 | ||
1acf2318 | 727 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 728 | if (adapter->port[i]) |
d1d25aab | 729 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 730 | return adapter->port[i]; |
7a291083 JBT |
731 | return NULL; |
732 | } | |
733 | ||
734 | int ehea_sense_port_attr(struct ehea_port *port) | |
735 | { | |
736 | int ret; | |
737 | u64 hret; | |
738 | struct hcp_ehea_port_cb0 *cb0; | |
739 | ||
a1d261c5 TK |
740 | cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */ |
741 | if (!cb0) { /* ehea_neq_tasklet() */ | |
7a291083 JBT |
742 | ehea_error("no mem for cb0"); |
743 | ret = -ENOMEM; | |
744 | goto out; | |
745 | } | |
746 | ||
747 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
748 | port->logical_port_id, H_PORT_CB0, | |
749 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
750 | cb0); | |
751 | if (hret != H_SUCCESS) { | |
752 | ret = -EIO; | |
753 | goto out_free; | |
754 | } | |
755 | ||
756 | /* MAC address */ | |
757 | port->mac_addr = cb0->port_mac_addr << 16; | |
758 | ||
759 | if (!is_valid_ether_addr((u8*)&port->mac_addr)) { | |
760 | ret = -EADDRNOTAVAIL; | |
761 | goto out_free; | |
762 | } | |
763 | ||
764 | /* Port speed */ | |
765 | switch (cb0->port_speed) { | |
766 | case H_SPEED_10M_H: | |
767 | port->port_speed = EHEA_SPEED_10M; | |
768 | port->full_duplex = 0; | |
769 | break; | |
770 | case H_SPEED_10M_F: | |
771 | port->port_speed = EHEA_SPEED_10M; | |
772 | port->full_duplex = 1; | |
773 | break; | |
774 | case H_SPEED_100M_H: | |
775 | port->port_speed = EHEA_SPEED_100M; | |
776 | port->full_duplex = 0; | |
777 | break; | |
778 | case H_SPEED_100M_F: | |
779 | port->port_speed = EHEA_SPEED_100M; | |
780 | port->full_duplex = 1; | |
781 | break; | |
782 | case H_SPEED_1G_F: | |
783 | port->port_speed = EHEA_SPEED_1G; | |
784 | port->full_duplex = 1; | |
785 | break; | |
786 | case H_SPEED_10G_F: | |
787 | port->port_speed = EHEA_SPEED_10G; | |
788 | port->full_duplex = 1; | |
789 | break; | |
790 | default: | |
791 | port->port_speed = 0; | |
792 | port->full_duplex = 0; | |
793 | break; | |
794 | } | |
795 | ||
e919b593 | 796 | port->autoneg = 1; |
18604c54 | 797 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 798 | |
7a291083 | 799 | /* Number of default QPs */ |
18604c54 JBT |
800 | if (use_mcs) |
801 | port->num_def_qps = cb0->num_default_qps; | |
802 | else | |
803 | port->num_def_qps = 1; | |
7a291083 JBT |
804 | |
805 | if (!port->num_def_qps) { | |
806 | ret = -EINVAL; | |
807 | goto out_free; | |
808 | } | |
809 | ||
18604c54 JBT |
810 | port->num_tx_qps = num_tx_qps; |
811 | ||
812 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
813 | port->num_add_tx_qps = 0; |
814 | else | |
18604c54 | 815 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
816 | |
817 | ret = 0; | |
818 | out_free: | |
819 | if (ret || netif_msg_probe(port)) | |
820 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
821 | kfree(cb0); | |
822 | out: | |
823 | return ret; | |
824 | } | |
825 | ||
826 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
827 | { | |
828 | struct hcp_ehea_port_cb4 *cb4; | |
829 | u64 hret; | |
830 | int ret = 0; | |
831 | ||
a1d261c5 | 832 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
833 | if (!cb4) { |
834 | ehea_error("no mem for cb4"); | |
835 | ret = -ENOMEM; | |
836 | goto out; | |
837 | } | |
838 | ||
839 | cb4->port_speed = port_speed; | |
840 | ||
841 | netif_carrier_off(port->netdev); | |
842 | ||
843 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
844 | port->logical_port_id, | |
845 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
846 | if (hret == H_SUCCESS) { | |
847 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
848 | ||
849 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
850 | port->logical_port_id, | |
851 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
852 | cb4); | |
853 | if (hret == H_SUCCESS) { | |
854 | switch (cb4->port_speed) { | |
855 | case H_SPEED_10M_H: | |
856 | port->port_speed = EHEA_SPEED_10M; | |
857 | port->full_duplex = 0; | |
858 | break; | |
859 | case H_SPEED_10M_F: | |
860 | port->port_speed = EHEA_SPEED_10M; | |
861 | port->full_duplex = 1; | |
862 | break; | |
863 | case H_SPEED_100M_H: | |
864 | port->port_speed = EHEA_SPEED_100M; | |
865 | port->full_duplex = 0; | |
866 | break; | |
867 | case H_SPEED_100M_F: | |
868 | port->port_speed = EHEA_SPEED_100M; | |
869 | port->full_duplex = 1; | |
870 | break; | |
871 | case H_SPEED_1G_F: | |
872 | port->port_speed = EHEA_SPEED_1G; | |
873 | port->full_duplex = 1; | |
874 | break; | |
875 | case H_SPEED_10G_F: | |
876 | port->port_speed = EHEA_SPEED_10G; | |
877 | port->full_duplex = 1; | |
878 | break; | |
879 | default: | |
880 | port->port_speed = 0; | |
881 | port->full_duplex = 0; | |
882 | break; | |
883 | } | |
884 | } else { | |
885 | ehea_error("Failed sensing port speed"); | |
886 | ret = -EIO; | |
887 | } | |
888 | } else { | |
889 | if (hret == H_AUTHORITY) { | |
7674a588 | 890 | ehea_info("Hypervisor denied setting port speed"); |
7a291083 JBT |
891 | ret = -EPERM; |
892 | } else { | |
893 | ret = -EIO; | |
894 | ehea_error("Failed setting port speed"); | |
895 | } | |
896 | } | |
8759cf76 JBT |
897 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
898 | netif_carrier_on(port->netdev); | |
899 | ||
7a291083 JBT |
900 | kfree(cb4); |
901 | out: | |
902 | return ret; | |
903 | } | |
904 | ||
905 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
906 | { | |
907 | int ret; | |
908 | u8 ec; | |
909 | u8 portnum; | |
910 | struct ehea_port *port; | |
911 | ||
912 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
913 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
914 | port = ehea_get_port(adapter, portnum); | |
915 | ||
916 | switch (ec) { | |
917 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
918 | ||
919 | if (!port) { | |
920 | ehea_error("unknown portnum %x", portnum); | |
921 | break; | |
922 | } | |
923 | ||
924 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
925 | if (!netif_carrier_ok(port->netdev)) { | |
1e1675cc | 926 | ret = ehea_sense_port_attr(port); |
7a291083 JBT |
927 | if (ret) { |
928 | ehea_error("failed resensing port " | |
929 | "attributes"); | |
930 | break; | |
931 | } | |
932 | ||
933 | if (netif_msg_link(port)) | |
934 | ehea_info("%s: Logical port up: %dMbps " | |
935 | "%s Duplex", | |
936 | port->netdev->name, | |
937 | port->port_speed, | |
938 | port->full_duplex == | |
939 | 1 ? "Full" : "Half"); | |
940 | ||
941 | netif_carrier_on(port->netdev); | |
942 | netif_wake_queue(port->netdev); | |
943 | } | |
944 | } else | |
945 | if (netif_carrier_ok(port->netdev)) { | |
946 | if (netif_msg_link(port)) | |
947 | ehea_info("%s: Logical port down", | |
948 | port->netdev->name); | |
949 | netif_carrier_off(port->netdev); | |
950 | netif_stop_queue(port->netdev); | |
951 | } | |
952 | ||
953 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 954 | port->phy_link = EHEA_PHY_LINK_UP; |
7a291083 JBT |
955 | if (netif_msg_link(port)) |
956 | ehea_info("%s: Physical port up", | |
957 | port->netdev->name); | |
8759cf76 JBT |
958 | if (prop_carrier_state) |
959 | netif_carrier_on(port->netdev); | |
7a291083 | 960 | } else { |
8759cf76 | 961 | port->phy_link = EHEA_PHY_LINK_DOWN; |
7a291083 JBT |
962 | if (netif_msg_link(port)) |
963 | ehea_info("%s: Physical port down", | |
964 | port->netdev->name); | |
8759cf76 JBT |
965 | if (prop_carrier_state) |
966 | netif_carrier_off(port->netdev); | |
7a291083 JBT |
967 | } |
968 | ||
969 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
970 | ehea_info("External switch port is primary port"); | |
971 | else | |
972 | ehea_info("External switch port is backup port"); | |
973 | ||
974 | break; | |
975 | case EHEA_EC_ADAPTER_MALFUNC: | |
976 | ehea_error("Adapter malfunction"); | |
977 | break; | |
978 | case EHEA_EC_PORT_MALFUNC: | |
979 | ehea_info("Port malfunction: Device: %s", port->netdev->name); | |
980 | netif_carrier_off(port->netdev); | |
981 | netif_stop_queue(port->netdev); | |
982 | break; | |
983 | default: | |
bff0a55f | 984 | ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe); |
7a291083 JBT |
985 | break; |
986 | } | |
987 | } | |
988 | ||
989 | static void ehea_neq_tasklet(unsigned long data) | |
990 | { | |
991 | struct ehea_adapter *adapter = (struct ehea_adapter*)data; | |
992 | struct ehea_eqe *eqe; | |
993 | u64 event_mask; | |
994 | ||
995 | eqe = ehea_poll_eq(adapter->neq); | |
996 | ehea_debug("eqe=%p", eqe); | |
997 | ||
998 | while (eqe) { | |
999 | ehea_debug("*eqe=%lx", eqe->entry); | |
1000 | ehea_parse_eqe(adapter, eqe->entry); | |
1001 | eqe = ehea_poll_eq(adapter->neq); | |
1002 | ehea_debug("next eqe=%p", eqe); | |
1003 | } | |
1004 | ||
1005 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1006 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1007 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1008 | ||
1009 | ehea_h_reset_events(adapter->handle, | |
1010 | adapter->neq->fw_handle, event_mask); | |
1011 | } | |
1012 | ||
7d12e780 | 1013 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1014 | { |
1015 | struct ehea_adapter *adapter = param; | |
1016 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1017 | return IRQ_HANDLED; | |
1018 | } | |
1019 | ||
1020 | ||
1021 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1022 | { | |
1023 | int ret; | |
1024 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1025 | ||
1026 | ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 | |
1027 | - init_attr->act_nr_rwqes_rq2 | |
1028 | - init_attr->act_nr_rwqes_rq3 - 1); | |
1029 | ||
1030 | ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); | |
1031 | ||
1032 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
1033 | ||
1034 | return ret; | |
1035 | } | |
1036 | ||
1037 | static int ehea_reg_interrupts(struct net_device *dev) | |
1038 | { | |
1039 | struct ehea_port *port = netdev_priv(dev); | |
1040 | struct ehea_port_res *pr; | |
1041 | int i, ret; | |
1042 | ||
7a291083 JBT |
1043 | |
1044 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
1045 | dev->name); | |
1046 | ||
6b08f3ae | 1047 | ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
7a291083 | 1048 | ehea_qp_aff_irq_handler, |
38515e90 | 1049 | IRQF_DISABLED, port->int_aff_name, port); |
7a291083 JBT |
1050 | if (ret) { |
1051 | ehea_error("failed registering irq for qp_aff_irq_handler:" | |
1052 | "ist=%X", port->qp_eq->attr.ist1); | |
1053 | goto out_free_qpeq; | |
1054 | } | |
1055 | ||
1056 | if (netif_msg_ifup(port)) | |
1057 | ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " | |
1058 | "registered", port->qp_eq->attr.ist1); | |
1059 | ||
18604c54 | 1060 | |
7a291083 JBT |
1061 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1062 | pr = &port->port_res[i]; | |
1063 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 | 1064 | "%s-queue%d", dev->name, i); |
6b08f3ae | 1065 | ret = ibmebus_request_irq(pr->eq->attr.ist1, |
18604c54 | 1066 | ehea_recv_irq_handler, |
38515e90 | 1067 | IRQF_DISABLED, pr->int_send_name, |
7a291083 JBT |
1068 | pr); |
1069 | if (ret) { | |
18604c54 | 1070 | ehea_error("failed registering irq for ehea_queue " |
7a291083 | 1071 | "port_res_nr:%d, ist=%X", i, |
18604c54 | 1072 | pr->eq->attr.ist1); |
7a291083 JBT |
1073 | goto out_free_req; |
1074 | } | |
1075 | if (netif_msg_ifup(port)) | |
18604c54 JBT |
1076 | ehea_info("irq_handle 0x%X for function ehea_queue_int " |
1077 | "%d registered", pr->eq->attr.ist1, i); | |
7a291083 JBT |
1078 | } |
1079 | out: | |
1080 | return ret; | |
1081 | ||
18604c54 | 1082 | |
7a291083 JBT |
1083 | out_free_req: |
1084 | while (--i >= 0) { | |
18604c54 | 1085 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1086 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1087 | } |
18604c54 | 1088 | |
7a291083 | 1089 | out_free_qpeq: |
6b08f3ae | 1090 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1091 | i = port->num_def_qps; |
18604c54 | 1092 | |
7a291083 | 1093 | goto out; |
18604c54 | 1094 | |
7a291083 JBT |
1095 | } |
1096 | ||
1097 | static void ehea_free_interrupts(struct net_device *dev) | |
1098 | { | |
1099 | struct ehea_port *port = netdev_priv(dev); | |
1100 | struct ehea_port_res *pr; | |
1101 | int i; | |
1102 | ||
1103 | /* send */ | |
18604c54 | 1104 | |
7a291083 JBT |
1105 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1106 | pr = &port->port_res[i]; | |
6b08f3ae | 1107 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
7a291083 JBT |
1108 | if (netif_msg_intr(port)) |
1109 | ehea_info("free send irq for res %d with handle 0x%X", | |
18604c54 | 1110 | i, pr->eq->attr.ist1); |
7a291083 JBT |
1111 | } |
1112 | ||
1113 | /* associated events */ | |
6b08f3ae | 1114 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 JBT |
1115 | if (netif_msg_intr(port)) |
1116 | ehea_info("associated event interrupt for handle 0x%X freed", | |
1117 | port->qp_eq->attr.ist1); | |
1118 | } | |
1119 | ||
1120 | static int ehea_configure_port(struct ehea_port *port) | |
1121 | { | |
1122 | int ret, i; | |
1123 | u64 hret, mask; | |
1124 | struct hcp_ehea_port_cb0 *cb0; | |
1125 | ||
1126 | ret = -ENOMEM; | |
a1d261c5 | 1127 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1128 | if (!cb0) |
1129 | goto out; | |
1130 | ||
1131 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1132 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1133 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1134 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1135 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1136 | PXLY_RC_VLAN_FILTER) | |
1137 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1138 | ||
18604c54 JBT |
1139 | for (i = 0; i < port->num_mcs; i++) |
1140 | if (use_mcs) | |
1141 | cb0->default_qpn_arr[i] = | |
1142 | port->port_res[i].qp->init_attr.qp_nr; | |
1143 | else | |
1144 | cb0->default_qpn_arr[i] = | |
1145 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1146 | |
7a291083 JBT |
1147 | if (netif_msg_ifup(port)) |
1148 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1149 | ||
1150 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1151 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1152 | ||
1153 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1154 | port->logical_port_id, | |
1155 | H_PORT_CB0, mask, cb0); | |
1156 | ret = -EIO; | |
1157 | if (hret != H_SUCCESS) | |
1158 | goto out_free; | |
1159 | ||
1160 | ret = 0; | |
1161 | ||
1162 | out_free: | |
1163 | kfree(cb0); | |
1164 | out: | |
1165 | return ret; | |
1166 | } | |
1167 | ||
e542aa6b | 1168 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1169 | { |
e542aa6b | 1170 | int ret; |
7a291083 JBT |
1171 | struct ehea_adapter *adapter = pr->port->adapter; |
1172 | ||
e542aa6b JBT |
1173 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1174 | if (ret) | |
7a291083 JBT |
1175 | goto out; |
1176 | ||
e542aa6b JBT |
1177 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1178 | if (ret) | |
1179 | goto out_free; | |
7a291083 JBT |
1180 | |
1181 | return 0; | |
1182 | ||
e542aa6b JBT |
1183 | out_free: |
1184 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1185 | out: |
e542aa6b | 1186 | ehea_error("Generating SMRS failed\n"); |
7a291083 JBT |
1187 | return -EIO; |
1188 | } | |
1189 | ||
e542aa6b | 1190 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1191 | { |
e542aa6b JBT |
1192 | if ((ehea_rem_mr(&pr->send_mr)) |
1193 | || (ehea_rem_mr(&pr->recv_mr))) | |
1194 | return -EIO; | |
1195 | else | |
1196 | return 0; | |
7a291083 JBT |
1197 | } |
1198 | ||
1199 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1200 | { | |
1201 | int arr_size = sizeof(void*) * max_q_entries; | |
1202 | ||
1203 | q_skba->arr = vmalloc(arr_size); | |
1204 | if (!q_skba->arr) | |
1205 | return -ENOMEM; | |
1206 | ||
1207 | memset(q_skba->arr, 0, arr_size); | |
1208 | ||
1209 | q_skba->len = max_q_entries; | |
1210 | q_skba->index = 0; | |
1211 | q_skba->os_skbs = 0; | |
1212 | ||
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1217 | struct port_res_cfg *pr_cfg, int queue_token) | |
1218 | { | |
1219 | struct ehea_adapter *adapter = port->adapter; | |
1220 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1221 | struct ehea_qp_init_attr *init_attr = NULL; | |
1222 | int ret = -EIO; | |
1223 | ||
1224 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1225 | ||
1226 | pr->port = port; | |
7a291083 JBT |
1227 | spin_lock_init(&pr->xmit_lock); |
1228 | spin_lock_init(&pr->netif_queue); | |
1229 | ||
18604c54 JBT |
1230 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1231 | if (!pr->eq) { | |
1232 | ehea_error("create_eq failed (eq)"); | |
7a291083 JBT |
1233 | goto out_free; |
1234 | } | |
1235 | ||
1236 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1237 | pr->eq->fw_handle, |
7a291083 JBT |
1238 | port->logical_port_id); |
1239 | if (!pr->recv_cq) { | |
1240 | ehea_error("create_cq failed (cq_recv)"); | |
1241 | goto out_free; | |
1242 | } | |
1243 | ||
1244 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1245 | pr->eq->fw_handle, |
7a291083 JBT |
1246 | port->logical_port_id); |
1247 | if (!pr->send_cq) { | |
1248 | ehea_error("create_cq failed (cq_send)"); | |
1249 | goto out_free; | |
1250 | } | |
1251 | ||
1252 | if (netif_msg_ifup(port)) | |
1253 | ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", | |
1254 | pr->send_cq->attr.act_nr_of_cqes, | |
1255 | pr->recv_cq->attr.act_nr_of_cqes); | |
1256 | ||
1257 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1258 | if (!init_attr) { | |
1259 | ret = -ENOMEM; | |
1260 | ehea_error("no mem for ehea_qp_init_attr"); | |
1261 | goto out_free; | |
1262 | } | |
1263 | ||
1264 | init_attr->low_lat_rq1 = 1; | |
1265 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1266 | init_attr->rq_count = 3; | |
1267 | init_attr->qp_token = queue_token; | |
1268 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1269 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1270 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1271 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1272 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1273 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1274 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1275 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1276 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1277 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1278 | init_attr->port_nr = port->logical_port_id; | |
1279 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1280 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1281 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1282 | ||
1283 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1284 | if (!pr->qp) { | |
1285 | ehea_error("create_qp failed"); | |
1286 | ret = -EIO; | |
1287 | goto out_free; | |
1288 | } | |
1289 | ||
1290 | if (netif_msg_ifup(port)) | |
1291 | ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " | |
1292 | "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, | |
1293 | init_attr->act_nr_send_wqes, | |
1294 | init_attr->act_nr_rwqes_rq1, | |
1295 | init_attr->act_nr_rwqes_rq2, | |
1296 | init_attr->act_nr_rwqes_rq3); | |
1297 | ||
1298 | ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); | |
1299 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); | |
1300 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1301 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1302 | if (ret) | |
1303 | goto out_free; | |
1304 | ||
1305 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1306 | if (ehea_gen_smrs(pr) != 0) { | |
1307 | ret = -EIO; | |
1308 | goto out_free; | |
1309 | } | |
18604c54 | 1310 | |
7a291083 JBT |
1311 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1312 | ||
1313 | kfree(init_attr); | |
18604c54 | 1314 | |
bea3348e | 1315 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1316 | |
d4dc4ec9 JBT |
1317 | pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
1318 | pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; | |
1319 | pr->lro_mgr.lro_arr = pr->lro_desc; | |
1320 | pr->lro_mgr.get_skb_header = get_skb_hdr; | |
1321 | pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; | |
1322 | pr->lro_mgr.dev = port->netdev; | |
1323 | pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1324 | pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1325 | ||
7a291083 JBT |
1326 | ret = 0; |
1327 | goto out; | |
1328 | ||
1329 | out_free: | |
1330 | kfree(init_attr); | |
1331 | vfree(pr->sq_skba.arr); | |
1332 | vfree(pr->rq1_skba.arr); | |
1333 | vfree(pr->rq2_skba.arr); | |
1334 | vfree(pr->rq3_skba.arr); | |
1335 | ehea_destroy_qp(pr->qp); | |
1336 | ehea_destroy_cq(pr->send_cq); | |
1337 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1338 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1339 | out: |
1340 | return ret; | |
1341 | } | |
1342 | ||
1343 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1344 | { | |
1345 | int ret, i; | |
1346 | ||
1347 | ret = ehea_destroy_qp(pr->qp); | |
1348 | ||
1349 | if (!ret) { | |
1350 | ehea_destroy_cq(pr->send_cq); | |
1351 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1352 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1353 | |
1354 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1355 | if (pr->rq1_skba.arr[i]) | |
1356 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1357 | ||
1358 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1359 | if (pr->rq2_skba.arr[i]) | |
1360 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1361 | ||
1362 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1363 | if (pr->rq3_skba.arr[i]) | |
1364 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1365 | ||
1366 | for (i = 0; i < pr->sq_skba.len; i++) | |
1367 | if (pr->sq_skba.arr[i]) | |
1368 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1369 | ||
1370 | vfree(pr->rq1_skba.arr); | |
1371 | vfree(pr->rq2_skba.arr); | |
1372 | vfree(pr->rq3_skba.arr); | |
1373 | vfree(pr->sq_skba.arr); | |
1374 | ret = ehea_rem_smrs(pr); | |
1375 | } | |
1376 | return ret; | |
1377 | } | |
1378 | ||
1379 | /* | |
1380 | * The write_* functions store information in swqe which is used by | |
1381 | * the hardware to calculate the ip/tcp/udp checksum | |
1382 | */ | |
1383 | ||
1384 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1385 | const struct sk_buff *skb) | |
1386 | { | |
eddc9ec5 | 1387 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1388 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1389 | } |
1390 | ||
1391 | static inline void write_tcp_offset_end(struct ehea_swqe *swqe, | |
1392 | const struct sk_buff *skb) | |
1393 | { | |
1394 | swqe->tcp_offset = | |
1395 | (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); | |
1396 | ||
1397 | swqe->tcp_end = (u16)skb->len - 1; | |
1398 | } | |
1399 | ||
1400 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1401 | const struct sk_buff *skb) | |
1402 | { | |
1403 | swqe->tcp_offset = | |
1404 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1405 | ||
1406 | swqe->tcp_end = (u16)skb->len - 1; | |
1407 | } | |
1408 | ||
1409 | ||
1410 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1411 | struct ehea_swqe *swqe, u32 lkey) | |
1412 | { | |
1413 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1414 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1415 | int skb_data_size = skb->len - skb->data_len; | |
1416 | int headersize; | |
7a291083 JBT |
1417 | |
1418 | /* Packet is TCP with TSO enabled */ | |
1419 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1420 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1421 | /* copy only eth/ip/tcp headers to immediate data and | |
1422 | * the rest of skb->data to sg1entry | |
1423 | */ | |
ab6a5bb6 | 1424 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 JBT |
1425 | |
1426 | skb_data_size = skb->len - skb->data_len; | |
1427 | ||
1428 | if (skb_data_size >= headersize) { | |
1429 | /* copy immediate data */ | |
d626f62b | 1430 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1431 | swqe->immediate_data_length = headersize; |
1432 | ||
1433 | if (skb_data_size > headersize) { | |
1434 | /* set sg1entry data */ | |
1435 | sg1entry->l_key = lkey; | |
1436 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1437 | sg1entry->vaddr = |
1438 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1439 | swqe->descriptors++; |
1440 | } | |
1441 | } else | |
1442 | ehea_error("cannot handle fragmented headers"); | |
1443 | } | |
1444 | ||
1445 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1446 | struct ehea_swqe *swqe, u32 lkey) | |
1447 | { | |
1448 | int skb_data_size = skb->len - skb->data_len; | |
1449 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
1450 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1451 | |
1452 | /* Packet is any nonTSO type | |
1453 | * | |
1454 | * Copy as much as possible skb->data to immediate data and | |
1455 | * the rest to sg1entry | |
1456 | */ | |
1457 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1458 | /* copy immediate data */ | |
d626f62b | 1459 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1460 | |
1461 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1462 | ||
1463 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1464 | /* copy sg1entry data */ | |
1465 | sg1entry->l_key = lkey; | |
1466 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1467 | sg1entry->vaddr = |
1468 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1469 | swqe->descriptors++; |
1470 | } | |
1471 | } else { | |
d626f62b | 1472 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1473 | swqe->immediate_data_length = skb_data_size; |
1474 | } | |
1475 | } | |
1476 | ||
1477 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1478 | struct ehea_swqe *swqe, u32 lkey) | |
1479 | { | |
1480 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1481 | skb_frag_t *frag; | |
1482 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1483 | |
1484 | nfrags = skb_shinfo(skb)->nr_frags; | |
1485 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1486 | sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list; | |
1487 | swqe->descriptors = 0; | |
1488 | sg1entry_contains_frag_data = 0; | |
1489 | ||
1490 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1491 | write_swqe2_TSO(skb, swqe, lkey); | |
1492 | else | |
1493 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1494 | ||
1495 | /* write descriptors */ | |
1496 | if (nfrags > 0) { | |
1497 | if (swqe->descriptors == 0) { | |
1498 | /* sg1entry not yet used */ | |
1499 | frag = &skb_shinfo(skb)->frags[0]; | |
1500 | ||
1501 | /* copy sg1entry data */ | |
1502 | sg1entry->l_key = lkey; | |
1503 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1504 | sg1entry->vaddr = |
1505 | ehea_map_vaddr(page_address(frag->page) | |
1506 | + frag->page_offset); | |
7a291083 JBT |
1507 | swqe->descriptors++; |
1508 | sg1entry_contains_frag_data = 1; | |
1509 | } | |
1510 | ||
1511 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1512 | ||
1513 | frag = &skb_shinfo(skb)->frags[i]; | |
1514 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1515 | ||
1516 | sgentry->l_key = lkey; | |
1517 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1518 | sgentry->vaddr = |
1519 | ehea_map_vaddr(page_address(frag->page) | |
1520 | + frag->page_offset); | |
7a291083 JBT |
1521 | swqe->descriptors++; |
1522 | } | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1527 | { | |
1528 | int ret = 0; | |
1529 | u64 hret; | |
1530 | u8 reg_type; | |
1531 | ||
1532 | /* De/Register untagged packets */ | |
1533 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1534 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1535 | port->logical_port_id, | |
1536 | reg_type, port->mac_addr, 0, hcallid); | |
1537 | if (hret != H_SUCCESS) { | |
f9e29228 TK |
1538 | ehea_error("%sregistering bc address failed (tagged)", |
1539 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1540 | ret = -EIO; |
1541 | goto out_herr; | |
1542 | } | |
1543 | ||
1544 | /* De/Register VLAN packets */ | |
1545 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
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 TK |
1550 | ehea_error("%sregistering bc address failed (vlan)", |
1551 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1552 | ret = -EIO; |
1553 | } | |
1554 | out_herr: | |
1555 | return ret; | |
1556 | } | |
1557 | ||
1558 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1559 | { | |
1560 | struct ehea_port *port = netdev_priv(dev); | |
1561 | struct sockaddr *mac_addr = sa; | |
1562 | struct hcp_ehea_port_cb0 *cb0; | |
1563 | int ret; | |
1564 | u64 hret; | |
1565 | ||
1566 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1567 | ret = -EADDRNOTAVAIL; | |
1568 | goto out; | |
1569 | } | |
1570 | ||
a1d261c5 | 1571 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
1572 | if (!cb0) { |
1573 | ehea_error("no mem for cb0"); | |
1574 | ret = -ENOMEM; | |
1575 | goto out; | |
1576 | } | |
1577 | ||
1578 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1579 | ||
1580 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1581 | ||
1582 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1583 | port->logical_port_id, H_PORT_CB0, | |
1584 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1585 | if (hret != H_SUCCESS) { | |
1586 | ret = -EIO; | |
1587 | goto out_free; | |
1588 | } | |
1589 | ||
1590 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1591 | ||
1592 | /* Deregister old MAC in pHYP */ | |
1593 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1594 | if (ret) | |
1595 | goto out_free; | |
1596 | ||
1597 | port->mac_addr = cb0->port_mac_addr << 16; | |
1598 | ||
1599 | /* Register new MAC in pHYP */ | |
1600 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1601 | if (ret) | |
1602 | goto out_free; | |
1603 | ||
1604 | ret = 0; | |
1605 | out_free: | |
1606 | kfree(cb0); | |
1607 | out: | |
1608 | return ret; | |
1609 | } | |
1610 | ||
1611 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1612 | { | |
7674a588 TK |
1613 | if (hret == H_AUTHORITY) |
1614 | ehea_info("Hypervisor denied %sabling promiscuous mode", | |
1615 | enable == 1 ? "en" : "dis"); | |
1616 | else | |
1617 | ehea_error("failed %sabling promiscuous mode", | |
1618 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1619 | } |
1620 | ||
1621 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1622 | { | |
1623 | struct ehea_port *port = netdev_priv(dev); | |
1624 | struct hcp_ehea_port_cb7 *cb7; | |
1625 | u64 hret; | |
1626 | ||
1627 | if ((enable && port->promisc) || (!enable && !port->promisc)) | |
1628 | return; | |
1629 | ||
a1d261c5 | 1630 | cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
7a291083 JBT |
1631 | if (!cb7) { |
1632 | ehea_error("no mem for cb7"); | |
1633 | goto out; | |
1634 | } | |
1635 | ||
1636 | /* Modify Pxs_DUCQPN in CB7 */ | |
1637 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1638 | ||
1639 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1640 | port->logical_port_id, | |
1641 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1642 | if (hret) { | |
1643 | ehea_promiscuous_error(hret, enable); | |
1644 | goto out; | |
1645 | } | |
1646 | ||
1647 | port->promisc = enable; | |
1648 | out: | |
1649 | kfree(cb7); | |
1650 | return; | |
1651 | } | |
1652 | ||
1653 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1654 | u32 hcallid) | |
1655 | { | |
1656 | u64 hret; | |
1657 | u8 reg_type; | |
1658 | ||
1659 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1660 | | EHEA_BCMC_UNTAGGED; | |
1661 | ||
1662 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1663 | port->logical_port_id, | |
1664 | reg_type, mc_mac_addr, 0, hcallid); | |
1665 | if (hret) | |
1666 | goto out; | |
1667 | ||
1668 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1669 | | EHEA_BCMC_VLANID_ALL; | |
1670 | ||
1671 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1672 | port->logical_port_id, | |
1673 | reg_type, mc_mac_addr, 0, hcallid); | |
1674 | out: | |
1675 | return hret; | |
1676 | } | |
1677 | ||
1678 | static int ehea_drop_multicast_list(struct net_device *dev) | |
1679 | { | |
1680 | struct ehea_port *port = netdev_priv(dev); | |
1681 | struct ehea_mc_list *mc_entry = port->mc_list; | |
1682 | struct list_head *pos; | |
1683 | struct list_head *temp; | |
1684 | int ret = 0; | |
1685 | u64 hret; | |
1686 | ||
1687 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
1688 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
1689 | ||
1690 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
1691 | H_DEREG_BCMC); | |
1692 | if (hret) { | |
1693 | ehea_error("failed deregistering mcast MAC"); | |
1694 | ret = -EIO; | |
1695 | } | |
1696 | ||
1697 | list_del(pos); | |
1698 | kfree(mc_entry); | |
1699 | } | |
1700 | return ret; | |
1701 | } | |
1702 | ||
1703 | static void ehea_allmulti(struct net_device *dev, int enable) | |
1704 | { | |
1705 | struct ehea_port *port = netdev_priv(dev); | |
1706 | u64 hret; | |
1707 | ||
1708 | if (!port->allmulti) { | |
1709 | if (enable) { | |
1710 | /* Enable ALLMULTI */ | |
1711 | ehea_drop_multicast_list(dev); | |
1712 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
1713 | if (!hret) | |
1714 | port->allmulti = 1; | |
1715 | else | |
1716 | ehea_error("failed enabling IFF_ALLMULTI"); | |
1717 | } | |
1718 | } else | |
1719 | if (!enable) { | |
1720 | /* Disable ALLMULTI */ | |
1721 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
1722 | if (!hret) | |
1723 | port->allmulti = 0; | |
1724 | else | |
1725 | ehea_error("failed disabling IFF_ALLMULTI"); | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr) | |
1730 | { | |
1731 | struct ehea_mc_list *ehea_mcl_entry; | |
1732 | u64 hret; | |
1733 | ||
1e1675cc | 1734 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 JBT |
1735 | if (!ehea_mcl_entry) { |
1736 | ehea_error("no mem for mcl_entry"); | |
1737 | return; | |
1738 | } | |
1739 | ||
1740 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
1741 | ||
1742 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
1743 | ||
1744 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
1745 | H_REG_BCMC); | |
1746 | if (!hret) | |
1747 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
1748 | else { | |
1749 | ehea_error("failed registering mcast MAC"); | |
1750 | kfree(ehea_mcl_entry); | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | static void ehea_set_multicast_list(struct net_device *dev) | |
1755 | { | |
1756 | struct ehea_port *port = netdev_priv(dev); | |
1757 | struct dev_mc_list *k_mcl_entry; | |
1758 | int ret, i; | |
1759 | ||
1760 | if (dev->flags & IFF_PROMISC) { | |
1761 | ehea_promiscuous(dev, 1); | |
1762 | return; | |
1763 | } | |
1764 | ehea_promiscuous(dev, 0); | |
1765 | ||
1766 | if (dev->flags & IFF_ALLMULTI) { | |
1767 | ehea_allmulti(dev, 1); | |
1768 | return; | |
1769 | } | |
1770 | ehea_allmulti(dev, 0); | |
1771 | ||
1772 | if (dev->mc_count) { | |
1773 | ret = ehea_drop_multicast_list(dev); | |
1774 | if (ret) { | |
1775 | /* Dropping the current multicast list failed. | |
1776 | * Enabling ALL_MULTI is the best we can do. | |
1777 | */ | |
1778 | ehea_allmulti(dev, 1); | |
1779 | } | |
1780 | ||
1781 | if (dev->mc_count > port->adapter->max_mc_mac) { | |
1782 | ehea_info("Mcast registration limit reached (0x%lx). " | |
1783 | "Use ALLMULTI!", | |
1784 | port->adapter->max_mc_mac); | |
1785 | goto out; | |
1786 | } | |
1787 | ||
1788 | for (i = 0, k_mcl_entry = dev->mc_list; | |
1789 | i < dev->mc_count; | |
1790 | i++, k_mcl_entry = k_mcl_entry->next) { | |
1791 | ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); | |
1792 | } | |
1793 | } | |
1794 | out: | |
1795 | return; | |
1796 | } | |
1797 | ||
1798 | static int ehea_change_mtu(struct net_device *dev, int new_mtu) | |
1799 | { | |
1800 | if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) | |
1801 | return -EINVAL; | |
1802 | dev->mtu = new_mtu; | |
1803 | return 0; | |
1804 | } | |
1805 | ||
1806 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
1807 | struct ehea_swqe *swqe, u32 lkey) | |
1808 | { | |
1809 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1810 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1811 | |
7a291083 JBT |
1812 | /* IPv4 */ |
1813 | swqe->tx_control |= EHEA_SWQE_CRC | |
1814 | | EHEA_SWQE_IP_CHECKSUM | |
1815 | | EHEA_SWQE_TCP_CHECKSUM | |
1816 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1817 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1818 | ||
1819 | write_ip_start_end(swqe, skb); | |
1820 | ||
eddc9ec5 | 1821 | if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1822 | if ((iph->frag_off & IP_MF) |
1823 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1824 | /* IP fragment, so don't change cs */ |
1825 | swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; | |
1826 | else | |
1827 | write_udp_offset_end(swqe, skb); | |
eddc9ec5 | 1828 | } else if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1829 | write_tcp_offset_end(swqe, skb); |
1830 | } | |
1831 | ||
1832 | /* icmp (big data) and ip segmentation packets (all other ip | |
1833 | packets) do not require any special handling */ | |
1834 | ||
1835 | } else { | |
1836 | /* Other Ethernet Protocol */ | |
1837 | swqe->tx_control |= EHEA_SWQE_CRC | |
1838 | | EHEA_SWQE_IMM_DATA_PRESENT | |
1839 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1840 | } | |
1841 | ||
1842 | write_swqe2_data(skb, dev, swqe, lkey); | |
1843 | } | |
1844 | ||
1845 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
1846 | struct ehea_swqe *swqe) | |
1847 | { | |
1848 | int nfrags = skb_shinfo(skb)->nr_frags; | |
1849 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; | |
1850 | skb_frag_t *frag; | |
1851 | int i; | |
1852 | ||
1853 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 1854 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 1855 | |
7a291083 JBT |
1856 | /* IPv4 */ |
1857 | write_ip_start_end(swqe, skb); | |
1858 | ||
eddc9ec5 | 1859 | if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
1860 | swqe->tx_control |= EHEA_SWQE_CRC |
1861 | | EHEA_SWQE_IP_CHECKSUM | |
1862 | | EHEA_SWQE_TCP_CHECKSUM | |
1863 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1864 | ||
1865 | write_tcp_offset_end(swqe, skb); | |
1866 | ||
eddc9ec5 | 1867 | } else if (iph->protocol == IPPROTO_UDP) { |
d1d25aab JBT |
1868 | if ((iph->frag_off & IP_MF) |
1869 | || (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
1870 | /* IP fragment, so don't change cs */ |
1871 | swqe->tx_control |= EHEA_SWQE_CRC | |
1872 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1873 | else { | |
1874 | swqe->tx_control |= EHEA_SWQE_CRC | |
1875 | | EHEA_SWQE_IP_CHECKSUM | |
1876 | | EHEA_SWQE_TCP_CHECKSUM | |
1877 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1878 | ||
1879 | write_udp_offset_end(swqe, skb); | |
1880 | } | |
1881 | } else { | |
1882 | /* icmp (big data) and | |
1883 | ip segmentation packets (all other ip packets) */ | |
1884 | swqe->tx_control |= EHEA_SWQE_CRC | |
1885 | | EHEA_SWQE_IP_CHECKSUM | |
1886 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
1887 | } | |
1888 | } else { | |
1889 | /* Other Ethernet Protocol */ | |
1890 | swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; | |
1891 | } | |
1892 | /* copy (immediate) data */ | |
1893 | if (nfrags == 0) { | |
1894 | /* data is in a single piece */ | |
d626f62b | 1895 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
7a291083 JBT |
1896 | } else { |
1897 | /* first copy data from the skb->data buffer ... */ | |
d626f62b ACM |
1898 | skb_copy_from_linear_data(skb, imm_data, |
1899 | skb->len - skb->data_len); | |
7a291083 JBT |
1900 | imm_data += skb->len - skb->data_len; |
1901 | ||
1902 | /* ... then copy data from the fragments */ | |
1903 | for (i = 0; i < nfrags; i++) { | |
1904 | frag = &skb_shinfo(skb)->frags[i]; | |
1905 | memcpy(imm_data, | |
1906 | page_address(frag->page) + frag->page_offset, | |
1907 | frag->size); | |
1908 | imm_data += frag->size; | |
1909 | } | |
1910 | } | |
1911 | swqe->immediate_data_length = skb->len; | |
1912 | dev_kfree_skb(skb); | |
1913 | } | |
1914 | ||
18604c54 JBT |
1915 | static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
1916 | { | |
1917 | struct tcphdr *tcp; | |
1918 | u32 tmp; | |
1919 | ||
1920 | if ((skb->protocol == htons(ETH_P_IP)) && | |
88ca2d07 TK |
1921 | (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
1922 | tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4)); | |
18604c54 | 1923 | tmp = (tcp->source + (tcp->dest << 16)) % 31; |
88ca2d07 | 1924 | tmp += ip_hdr(skb)->daddr % 31; |
18604c54 JBT |
1925 | return tmp % num_qps; |
1926 | } | |
1927 | else | |
1928 | return 0; | |
1929 | } | |
1930 | ||
7a291083 JBT |
1931 | static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1932 | { | |
1933 | struct ehea_port *port = netdev_priv(dev); | |
1934 | struct ehea_swqe *swqe; | |
1935 | unsigned long flags; | |
1936 | u32 lkey; | |
1937 | int swqe_index; | |
18604c54 JBT |
1938 | struct ehea_port_res *pr; |
1939 | ||
1940 | pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; | |
1941 | ||
18604c54 JBT |
1942 | if (!spin_trylock(&pr->xmit_lock)) |
1943 | return NETDEV_TX_BUSY; | |
1944 | ||
1945 | if (pr->queue_stopped) { | |
1946 | spin_unlock(&pr->xmit_lock); | |
1947 | return NETDEV_TX_BUSY; | |
1948 | } | |
7a291083 JBT |
1949 | |
1950 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
1951 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
1952 | atomic_dec(&pr->swqe_avail); | |
1953 | ||
1954 | if (skb->len <= SWQE3_MAX_IMM) { | |
1955 | u32 sig_iv = port->sig_comp_iv; | |
1956 | u32 swqe_num = pr->swqe_id_counter; | |
1957 | ehea_xmit3(skb, dev, swqe); | |
1958 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
1959 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
1960 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
1961 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
1962 | sig_iv); | |
1963 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
1964 | pr->swqe_ll_count = 0; | |
1965 | } else | |
1966 | pr->swqe_ll_count += 1; | |
1967 | } else { | |
1968 | swqe->wr_id = | |
1969 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
1970 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 1971 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
1972 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
1973 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
1974 | ||
1975 | pr->sq_skba.index++; | |
1976 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
1977 | ||
1978 | lkey = pr->send_mr.lkey; | |
1979 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 1980 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
1981 | } |
1982 | pr->swqe_id_counter += 1; | |
1983 | ||
1984 | if (port->vgrp && vlan_tx_tag_present(skb)) { | |
1985 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; | |
1986 | swqe->vlan_tag = vlan_tx_tag_get(skb); | |
1987 | } | |
1988 | ||
1989 | if (netif_msg_tx_queued(port)) { | |
1990 | ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); | |
bff0a55f | 1991 | ehea_dump(swqe, 512, "swqe"); |
7a291083 JBT |
1992 | } |
1993 | ||
2c69448b JBT |
1994 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
1995 | netif_stop_queue(dev); | |
1996 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
1997 | } | |
44c82152 | 1998 | |
7a291083 | 1999 | ehea_post_swqe(pr->qp, swqe); |
7a291083 JBT |
2000 | |
2001 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
2002 | spin_lock_irqsave(&pr->netif_queue, flags); | |
2003 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
acbddb59 | 2004 | pr->p_stats.queue_stopped++; |
7a291083 JBT |
2005 | netif_stop_queue(dev); |
2006 | pr->queue_stopped = 1; | |
2007 | } | |
2008 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
2009 | } | |
2010 | dev->trans_start = jiffies; | |
2011 | spin_unlock(&pr->xmit_lock); | |
2c69448b | 2012 | |
7a291083 JBT |
2013 | return NETDEV_TX_OK; |
2014 | } | |
2015 | ||
2016 | static void ehea_vlan_rx_register(struct net_device *dev, | |
2017 | struct vlan_group *grp) | |
2018 | { | |
2019 | struct ehea_port *port = netdev_priv(dev); | |
2020 | struct ehea_adapter *adapter = port->adapter; | |
2021 | struct hcp_ehea_port_cb1 *cb1; | |
2022 | u64 hret; | |
2023 | ||
2024 | port->vgrp = grp; | |
2025 | ||
a1d261c5 | 2026 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2027 | if (!cb1) { |
2028 | ehea_error("no mem for cb1"); | |
2029 | goto out; | |
2030 | } | |
2031 | ||
dec590c1 | 2032 | memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); |
7a291083 JBT |
2033 | |
2034 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2035 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2036 | if (hret != H_SUCCESS) | |
2037 | ehea_error("modify_ehea_port failed"); | |
2038 | ||
2039 | kfree(cb1); | |
2040 | out: | |
2041 | return; | |
2042 | } | |
2043 | ||
2044 | static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
2045 | { | |
2046 | struct ehea_port *port = netdev_priv(dev); | |
2047 | struct ehea_adapter *adapter = port->adapter; | |
2048 | struct hcp_ehea_port_cb1 *cb1; | |
2049 | int index; | |
2050 | u64 hret; | |
2051 | ||
a1d261c5 | 2052 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2053 | if (!cb1) { |
2054 | ehea_error("no mem for cb1"); | |
2055 | goto out; | |
2056 | } | |
2057 | ||
2058 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2059 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2060 | if (hret != H_SUCCESS) { | |
2061 | ehea_error("query_ehea_port failed"); | |
2062 | goto out; | |
2063 | } | |
2064 | ||
2065 | index = (vid / 64); | |
dec590c1 | 2066 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2067 | |
2068 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2069 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2070 | if (hret != H_SUCCESS) | |
2071 | ehea_error("modify_ehea_port failed"); | |
2072 | out: | |
2073 | kfree(cb1); | |
2074 | return; | |
2075 | } | |
2076 | ||
2077 | static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
2078 | { | |
2079 | struct ehea_port *port = netdev_priv(dev); | |
2080 | struct ehea_adapter *adapter = port->adapter; | |
2081 | struct hcp_ehea_port_cb1 *cb1; | |
2082 | int index; | |
2083 | u64 hret; | |
2084 | ||
5c15bdec | 2085 | vlan_group_set_device(port->vgrp, vid, NULL); |
7a291083 | 2086 | |
a1d261c5 | 2087 | cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2088 | if (!cb1) { |
2089 | ehea_error("no mem for cb1"); | |
2090 | goto out; | |
2091 | } | |
2092 | ||
2093 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2094 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2095 | if (hret != H_SUCCESS) { | |
2096 | ehea_error("query_ehea_port failed"); | |
2097 | goto out; | |
2098 | } | |
2099 | ||
2100 | index = (vid / 64); | |
dec590c1 | 2101 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2102 | |
2103 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2104 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2105 | if (hret != H_SUCCESS) | |
2106 | ehea_error("modify_ehea_port failed"); | |
2107 | out: | |
2108 | kfree(cb1); | |
2109 | return; | |
2110 | } | |
2111 | ||
2112 | int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) | |
2113 | { | |
2114 | int ret = -EIO; | |
2115 | u64 hret; | |
2116 | u16 dummy16 = 0; | |
2117 | u64 dummy64 = 0; | |
2118 | struct hcp_modify_qp_cb0* cb0; | |
2119 | ||
a1d261c5 | 2120 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2121 | if (!cb0) { |
2122 | ret = -ENOMEM; | |
2123 | goto out; | |
2124 | } | |
2125 | ||
2126 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2127 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2128 | if (hret != H_SUCCESS) { | |
2129 | ehea_error("query_ehea_qp failed (1)"); | |
2130 | goto out; | |
2131 | } | |
2132 | ||
2133 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2134 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2135 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2136 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2137 | if (hret != H_SUCCESS) { | |
2138 | ehea_error("modify_ehea_qp failed (1)"); | |
2139 | goto out; | |
2140 | } | |
2141 | ||
2142 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2143 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2144 | if (hret != H_SUCCESS) { | |
2145 | ehea_error("query_ehea_qp failed (2)"); | |
2146 | goto out; | |
2147 | } | |
2148 | ||
2149 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2150 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2151 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2152 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2153 | if (hret != H_SUCCESS) { | |
2154 | ehea_error("modify_ehea_qp failed (2)"); | |
2155 | goto out; | |
2156 | } | |
2157 | ||
2158 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2159 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2160 | if (hret != H_SUCCESS) { | |
2161 | ehea_error("query_ehea_qp failed (3)"); | |
2162 | goto out; | |
2163 | } | |
2164 | ||
2165 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2166 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2167 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2168 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2169 | if (hret != H_SUCCESS) { | |
2170 | ehea_error("modify_ehea_qp failed (3)"); | |
2171 | goto out; | |
2172 | } | |
2173 | ||
2174 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2175 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2176 | if (hret != H_SUCCESS) { | |
2177 | ehea_error("query_ehea_qp failed (4)"); | |
2178 | goto out; | |
2179 | } | |
2180 | ||
2181 | ret = 0; | |
2182 | out: | |
2183 | kfree(cb0); | |
2184 | return ret; | |
2185 | } | |
2186 | ||
2187 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps, | |
2188 | int add_tx_qps) | |
2189 | { | |
2190 | int ret, i; | |
2191 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2192 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2193 | ||
2194 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2195 | EHEA_MAX_ENTRIES_EQ, 1); | |
2196 | if (!port->qp_eq) { | |
2197 | ret = -EINVAL; | |
2198 | ehea_error("ehea_create_eq failed (qp_eq)"); | |
2199 | goto out_kill_eq; | |
2200 | } | |
2201 | ||
2202 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2203 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2204 | pr_cfg.max_entries_sq = sq_entries; |
2205 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2206 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2207 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2208 | ||
2209 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2210 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2211 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2212 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2213 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2214 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2215 | ||
2216 | for (i = 0; i < def_qps; i++) { | |
2217 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2218 | if (ret) | |
2219 | goto out_clean_pr; | |
2220 | } | |
2221 | for (i = def_qps; i < def_qps + add_tx_qps; i++) { | |
2222 | ret = ehea_init_port_res(port, &port->port_res[i], | |
2223 | &pr_cfg_small_rx, i); | |
2224 | if (ret) | |
2225 | goto out_clean_pr; | |
2226 | } | |
2227 | ||
2228 | return 0; | |
2229 | ||
2230 | out_clean_pr: | |
2231 | while (--i >= 0) | |
2232 | ehea_clean_portres(port, &port->port_res[i]); | |
2233 | ||
2234 | out_kill_eq: | |
2235 | ehea_destroy_eq(port->qp_eq); | |
2236 | return ret; | |
2237 | } | |
2238 | ||
2239 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2240 | { | |
2241 | int ret = 0; | |
2242 | int i; | |
2243 | ||
2244 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) | |
2245 | ret |= ehea_clean_portres(port, &port->port_res[i]); | |
2246 | ||
2247 | ret |= ehea_destroy_eq(port->qp_eq); | |
2248 | ||
2249 | return ret; | |
2250 | } | |
2251 | ||
35cf2e2e | 2252 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2253 | { |
35cf2e2e TK |
2254 | if (adapter->active_ports) |
2255 | return; | |
1211bb6d TK |
2256 | |
2257 | ehea_rem_mr(&adapter->mr); | |
2258 | } | |
2259 | ||
35cf2e2e | 2260 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2261 | { |
35cf2e2e TK |
2262 | if (adapter->active_ports) |
2263 | return 0; | |
1211bb6d TK |
2264 | |
2265 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2266 | } | |
2267 | ||
7a291083 JBT |
2268 | static int ehea_up(struct net_device *dev) |
2269 | { | |
2270 | int ret, i; | |
2271 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2272 | |
2273 | if (port->state == EHEA_PORT_UP) | |
2274 | return 0; | |
2275 | ||
2276 | ret = ehea_port_res_setup(port, port->num_def_qps, | |
2277 | port->num_add_tx_qps); | |
2278 | if (ret) { | |
2279 | ehea_error("port_res_failed"); | |
2280 | goto out; | |
2281 | } | |
2282 | ||
2283 | /* Set default QP for this port */ | |
2284 | ret = ehea_configure_port(port); | |
2285 | if (ret) { | |
2286 | ehea_error("ehea_configure_port failed. ret:%d", ret); | |
2287 | goto out_clean_pr; | |
2288 | } | |
2289 | ||
7a291083 JBT |
2290 | ret = ehea_reg_interrupts(dev); |
2291 | if (ret) { | |
f9e29228 TK |
2292 | ehea_error("reg_interrupts failed. ret:%d", ret); |
2293 | goto out_clean_pr; | |
7a291083 JBT |
2294 | } |
2295 | ||
2296 | for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
2297 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); | |
2298 | if (ret) { | |
2299 | ehea_error("activate_qp failed"); | |
2300 | goto out_free_irqs; | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | for(i = 0; i < port->num_def_qps; i++) { | |
2305 | ret = ehea_fill_port_res(&port->port_res[i]); | |
2306 | if (ret) { | |
2307 | ehea_error("out_free_irqs"); | |
2308 | goto out_free_irqs; | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | ret = 0; | |
2313 | port->state = EHEA_PORT_UP; | |
2314 | goto out; | |
2315 | ||
2316 | out_free_irqs: | |
2317 | ehea_free_interrupts(dev); | |
2318 | ||
7a291083 JBT |
2319 | out_clean_pr: |
2320 | ehea_clean_all_portres(port); | |
2321 | out: | |
44c82152 TK |
2322 | if (ret) |
2323 | ehea_info("Failed starting %s. ret=%i", dev->name, ret); | |
2324 | ||
7a291083 JBT |
2325 | return ret; |
2326 | } | |
2327 | ||
bea3348e SH |
2328 | static void port_napi_disable(struct ehea_port *port) |
2329 | { | |
2330 | int i; | |
2331 | ||
2332 | for (i = 0; i < port->num_def_qps; i++) | |
2333 | napi_disable(&port->port_res[i].napi); | |
2334 | } | |
2335 | ||
2336 | static void port_napi_enable(struct ehea_port *port) | |
2337 | { | |
2338 | int i; | |
2339 | ||
2340 | for (i = 0; i < port->num_def_qps; i++) | |
2341 | napi_enable(&port->port_res[i].napi); | |
2342 | } | |
2343 | ||
7a291083 JBT |
2344 | static int ehea_open(struct net_device *dev) |
2345 | { | |
2346 | int ret; | |
2347 | struct ehea_port *port = netdev_priv(dev); | |
2348 | ||
2349 | down(&port->port_lock); | |
2350 | ||
2351 | if (netif_msg_ifup(port)) | |
2352 | ehea_info("enabling port %s", dev->name); | |
2353 | ||
2354 | ret = ehea_up(dev); | |
bea3348e SH |
2355 | if (!ret) { |
2356 | port_napi_enable(port); | |
7a291083 | 2357 | netif_start_queue(dev); |
bea3348e | 2358 | } |
7a291083 JBT |
2359 | |
2360 | up(&port->port_lock); | |
2361 | ||
2362 | return ret; | |
2363 | } | |
2364 | ||
2365 | static int ehea_down(struct net_device *dev) | |
2366 | { | |
bea3348e | 2367 | int ret; |
7a291083 JBT |
2368 | struct ehea_port *port = netdev_priv(dev); |
2369 | ||
2370 | if (port->state == EHEA_PORT_DOWN) | |
2371 | return 0; | |
2372 | ||
2373 | ehea_drop_multicast_list(dev); | |
2374 | ehea_free_interrupts(dev); | |
2375 | ||
bea3348e | 2376 | port_napi_disable(port); |
7a291083 | 2377 | |
7a291083 | 2378 | port->state = EHEA_PORT_DOWN; |
44c82152 TK |
2379 | |
2380 | ret = ehea_clean_all_portres(port); | |
2381 | if (ret) | |
2382 | ehea_info("Failed freeing resources for %s. ret=%i", | |
2383 | dev->name, ret); | |
2384 | ||
7a291083 JBT |
2385 | return ret; |
2386 | } | |
2387 | ||
2388 | static int ehea_stop(struct net_device *dev) | |
2389 | { | |
2390 | int ret; | |
2391 | struct ehea_port *port = netdev_priv(dev); | |
2392 | ||
2393 | if (netif_msg_ifdown(port)) | |
2394 | ehea_info("disabling port %s", dev->name); | |
2395 | ||
3bf76b81 | 2396 | flush_scheduled_work(); |
7a291083 JBT |
2397 | down(&port->port_lock); |
2398 | netif_stop_queue(dev); | |
2399 | ret = ehea_down(dev); | |
2400 | up(&port->port_lock); | |
2401 | return ret; | |
2402 | } | |
2403 | ||
2c69448b JBT |
2404 | void ehea_purge_sq(struct ehea_qp *orig_qp) |
2405 | { | |
2406 | struct ehea_qp qp = *orig_qp; | |
2407 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2408 | struct ehea_swqe *swqe; | |
2409 | int wqe_index; | |
2410 | int i; | |
2411 | ||
2412 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2413 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2414 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2415 | } | |
2416 | } | |
2417 | ||
2418 | int ehea_stop_qps(struct net_device *dev) | |
2419 | { | |
2420 | struct ehea_port *port = netdev_priv(dev); | |
2421 | struct ehea_adapter *adapter = port->adapter; | |
2422 | struct hcp_modify_qp_cb0* cb0; | |
2423 | int ret = -EIO; | |
2424 | int dret; | |
2425 | int i; | |
2426 | u64 hret; | |
2427 | u64 dummy64 = 0; | |
2428 | u16 dummy16 = 0; | |
2429 | ||
2430 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2431 | if (!cb0) { | |
2432 | ret = -ENOMEM; | |
2433 | goto out; | |
2434 | } | |
2435 | ||
2436 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2437 | struct ehea_port_res *pr = &port->port_res[i]; | |
2438 | struct ehea_qp *qp = pr->qp; | |
2439 | ||
2440 | /* Purge send queue */ | |
2441 | ehea_purge_sq(qp); | |
2442 | ||
2443 | /* Disable queue pair */ | |
2444 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2445 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2446 | cb0); | |
2447 | if (hret != H_SUCCESS) { | |
2448 | ehea_error("query_ehea_qp failed (1)"); | |
2449 | goto out; | |
2450 | } | |
2451 | ||
2452 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2453 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2454 | ||
2455 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2456 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2457 | 1), cb0, &dummy64, | |
2458 | &dummy64, &dummy16, &dummy16); | |
2459 | if (hret != H_SUCCESS) { | |
2460 | ehea_error("modify_ehea_qp failed (1)"); | |
2461 | goto out; | |
2462 | } | |
2463 | ||
2464 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2465 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2466 | cb0); | |
2467 | if (hret != H_SUCCESS) { | |
2468 | ehea_error("query_ehea_qp failed (2)"); | |
2469 | goto out; | |
2470 | } | |
2471 | ||
2472 | /* deregister shared memory regions */ | |
2473 | dret = ehea_rem_smrs(pr); | |
2474 | if (dret) { | |
2475 | ehea_error("unreg shared memory region failed"); | |
2476 | goto out; | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | ret = 0; | |
2481 | out: | |
2482 | kfree(cb0); | |
2483 | ||
2484 | return ret; | |
2485 | } | |
2486 | ||
2487 | void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res * pr) | |
2488 | { | |
2489 | struct ehea_qp qp = *orig_qp; | |
2490 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2491 | struct ehea_rwqe *rwqe; | |
2492 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2493 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2494 | struct sk_buff *skb; | |
2495 | u32 lkey = pr->recv_mr.lkey; | |
2496 | ||
2497 | ||
2498 | int i; | |
2499 | int index; | |
2500 | ||
2501 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2502 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2503 | rwqe->sg_list[0].l_key = lkey; | |
2504 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2505 | skb = skba_rq2[index]; | |
2506 | if (skb) | |
2507 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2508 | } | |
2509 | ||
2510 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2511 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2512 | rwqe->sg_list[0].l_key = lkey; | |
2513 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2514 | skb = skba_rq3[index]; | |
2515 | if (skb) | |
2516 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2517 | } | |
2518 | } | |
2519 | ||
2520 | int ehea_restart_qps(struct net_device *dev) | |
2521 | { | |
2522 | struct ehea_port *port = netdev_priv(dev); | |
2523 | struct ehea_adapter *adapter = port->adapter; | |
2524 | int ret = 0; | |
2525 | int i; | |
2526 | ||
2527 | struct hcp_modify_qp_cb0* cb0; | |
2528 | u64 hret; | |
2529 | u64 dummy64 = 0; | |
2530 | u16 dummy16 = 0; | |
2531 | ||
2532 | cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2533 | if (!cb0) { | |
2534 | ret = -ENOMEM; | |
2535 | goto out; | |
2536 | } | |
2537 | ||
2538 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2539 | struct ehea_port_res *pr = &port->port_res[i]; | |
2540 | struct ehea_qp *qp = pr->qp; | |
2541 | ||
2542 | ret = ehea_gen_smrs(pr); | |
2543 | if (ret) { | |
2544 | ehea_error("creation of shared memory regions failed"); | |
2545 | goto out; | |
2546 | } | |
2547 | ||
2548 | ehea_update_rqs(qp, pr); | |
2549 | ||
2550 | /* Enable queue pair */ | |
2551 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2552 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2553 | cb0); | |
2554 | if (hret != H_SUCCESS) { | |
2555 | ehea_error("query_ehea_qp failed (1)"); | |
2556 | goto out; | |
2557 | } | |
2558 | ||
2559 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2560 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2561 | ||
2562 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2563 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2564 | 1), cb0, &dummy64, | |
2565 | &dummy64, &dummy16, &dummy16); | |
2566 | if (hret != H_SUCCESS) { | |
2567 | ehea_error("modify_ehea_qp failed (1)"); | |
2568 | goto out; | |
2569 | } | |
2570 | ||
2571 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2572 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2573 | cb0); | |
2574 | if (hret != H_SUCCESS) { | |
2575 | ehea_error("query_ehea_qp failed (2)"); | |
2576 | goto out; | |
2577 | } | |
2578 | ||
2579 | /* refill entire queue */ | |
2580 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2581 | ehea_refill_rq2(pr, 0); | |
2582 | ehea_refill_rq3(pr, 0); | |
2583 | } | |
2584 | out: | |
2585 | kfree(cb0); | |
2586 | ||
2587 | return ret; | |
2588 | } | |
2589 | ||
c4028958 | 2590 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2591 | { |
2592 | int ret; | |
c4028958 DH |
2593 | struct ehea_port *port = |
2594 | container_of(work, struct ehea_port, reset_task); | |
2595 | struct net_device *dev = port->netdev; | |
7a291083 JBT |
2596 | |
2597 | port->resets++; | |
2598 | down(&port->port_lock); | |
2599 | netif_stop_queue(dev); | |
bea3348e SH |
2600 | |
2601 | port_napi_disable(port); | |
7a291083 | 2602 | |
44c82152 | 2603 | ehea_down(dev); |
7a291083 JBT |
2604 | |
2605 | ret = ehea_up(dev); | |
44c82152 | 2606 | if (ret) |
7a291083 | 2607 | goto out; |
7a291083 | 2608 | |
2c69448b JBT |
2609 | ehea_set_multicast_list(dev); |
2610 | ||
7a291083 JBT |
2611 | if (netif_msg_timer(port)) |
2612 | ehea_info("Device %s resetted successfully", dev->name); | |
2613 | ||
bea3348e SH |
2614 | port_napi_enable(port); |
2615 | ||
7a291083 JBT |
2616 | netif_wake_queue(dev); |
2617 | out: | |
2618 | up(&port->port_lock); | |
2619 | return; | |
2620 | } | |
2621 | ||
44c82152 TK |
2622 | static void ehea_rereg_mrs(struct work_struct *work) |
2623 | { | |
2624 | int ret, i; | |
2625 | struct ehea_adapter *adapter; | |
2626 | ||
2c69448b | 2627 | down(&dlpar_mem_lock); |
44c82152 TK |
2628 | ehea_info("LPAR memory enlarged - re-initializing driver"); |
2629 | ||
2630 | list_for_each_entry(adapter, &adapter_list, list) | |
2631 | if (adapter->active_ports) { | |
2632 | /* Shutdown all ports */ | |
2633 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2634 | struct ehea_port *port = adapter->port[i]; | |
2635 | ||
2636 | if (port) { | |
2637 | struct net_device *dev = port->netdev; | |
2638 | ||
2639 | if (dev->flags & IFF_UP) { | |
44c82152 TK |
2640 | down(&port->port_lock); |
2641 | netif_stop_queue(dev); | |
2c69448b JBT |
2642 | ret = ehea_stop_qps(dev); |
2643 | if (ret) { | |
2644 | up(&port->port_lock); | |
2645 | goto out; | |
2646 | } | |
bea3348e | 2647 | port_napi_disable(port); |
44c82152 TK |
2648 | up(&port->port_lock); |
2649 | } | |
2650 | } | |
2651 | } | |
2652 | ||
2653 | /* Unregister old memory region */ | |
2654 | ret = ehea_rem_mr(&adapter->mr); | |
2655 | if (ret) { | |
2656 | ehea_error("unregister MR failed - driver" | |
2657 | " inoperable!"); | |
2658 | goto out; | |
2659 | } | |
2660 | } | |
2661 | ||
2662 | ehea_destroy_busmap(); | |
44c82152 | 2663 | ret = ehea_create_busmap(); |
2c69448b JBT |
2664 | if (ret) { |
2665 | ehea_error("creating ehea busmap failed"); | |
44c82152 | 2666 | goto out; |
2c69448b | 2667 | } |
44c82152 TK |
2668 | |
2669 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
2670 | ||
2671 | list_for_each_entry(adapter, &adapter_list, list) | |
2672 | if (adapter->active_ports) { | |
2673 | /* Register new memory region */ | |
2674 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2675 | if (ret) { | |
2676 | ehea_error("register MR failed - driver" | |
2677 | " inoperable!"); | |
2678 | goto out; | |
2679 | } | |
2680 | ||
2681 | /* Restart all ports */ | |
2682 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2683 | struct ehea_port *port = adapter->port[i]; | |
2684 | ||
2685 | if (port) { | |
2686 | struct net_device *dev = port->netdev; | |
2687 | ||
2688 | if (dev->flags & IFF_UP) { | |
44c82152 | 2689 | down(&port->port_lock); |
2c69448b JBT |
2690 | port_napi_enable(port); |
2691 | ret = ehea_restart_qps(dev); | |
2692 | if (!ret) | |
44c82152 | 2693 | netif_wake_queue(dev); |
44c82152 TK |
2694 | up(&port->port_lock); |
2695 | } | |
2696 | } | |
2697 | } | |
2698 | } | |
2c69448b JBT |
2699 | up(&dlpar_mem_lock); |
2700 | ehea_info("re-initializing driver complete"); | |
44c82152 TK |
2701 | out: |
2702 | return; | |
2703 | } | |
2704 | ||
7a291083 JBT |
2705 | static void ehea_tx_watchdog(struct net_device *dev) |
2706 | { | |
2707 | struct ehea_port *port = netdev_priv(dev); | |
2708 | ||
2c69448b JBT |
2709 | if (netif_carrier_ok(dev) && |
2710 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
3bf76b81 | 2711 | schedule_work(&port->reset_task); |
7a291083 JBT |
2712 | } |
2713 | ||
2714 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
2715 | { | |
2716 | struct hcp_query_ehea *cb; | |
2717 | u64 hret; | |
2718 | int ret; | |
2719 | ||
a1d261c5 | 2720 | cb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2721 | if (!cb) { |
2722 | ret = -ENOMEM; | |
2723 | goto out; | |
2724 | } | |
2725 | ||
2726 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
2727 | ||
2728 | if (hret != H_SUCCESS) { | |
2729 | ret = -EIO; | |
2730 | goto out_herr; | |
2731 | } | |
2732 | ||
7a291083 JBT |
2733 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
2734 | ret = 0; | |
2735 | ||
2736 | out_herr: | |
2737 | kfree(cb); | |
2738 | out: | |
2739 | return ret; | |
2740 | } | |
2741 | ||
1acf2318 | 2742 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 2743 | { |
7a291083 | 2744 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
2745 | u64 hret; |
2746 | int ret = 0; | |
7a291083 | 2747 | |
1acf2318 | 2748 | *jumbo = 0; |
7a291083 | 2749 | |
1acf2318 | 2750 | /* (Try to) enable *jumbo frames */ |
a1d261c5 | 2751 | cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
7a291083 JBT |
2752 | if (!cb4) { |
2753 | ehea_error("no mem for cb4"); | |
1acf2318 JBT |
2754 | ret = -ENOMEM; |
2755 | goto out; | |
7a291083 | 2756 | } else { |
1acf2318 | 2757 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
2758 | port->logical_port_id, |
2759 | H_PORT_CB4, | |
2760 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
2761 | if (hret == H_SUCCESS) { |
2762 | if (cb4->jumbo_frame) | |
1acf2318 | 2763 | *jumbo = 1; |
9c750b7d TK |
2764 | else { |
2765 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
2766 | hret = ehea_h_modify_ehea_port(port->adapter-> |
2767 | handle, | |
9c750b7d | 2768 | port-> |
1acf2318 | 2769 | logical_port_id, |
9c750b7d TK |
2770 | H_PORT_CB4, |
2771 | H_PORT_CB4_JUMBO, | |
2772 | cb4); | |
2773 | if (hret == H_SUCCESS) | |
1acf2318 | 2774 | *jumbo = 1; |
9c750b7d | 2775 | } |
1acf2318 JBT |
2776 | } else |
2777 | ret = -EINVAL; | |
2778 | ||
7a291083 JBT |
2779 | kfree(cb4); |
2780 | } | |
1acf2318 JBT |
2781 | out: |
2782 | return ret; | |
2783 | } | |
2784 | ||
2785 | static ssize_t ehea_show_port_id(struct device *dev, | |
2786 | struct device_attribute *attr, char *buf) | |
2787 | { | |
2788 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 2789 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
2790 | } |
2791 | ||
2792 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
2793 | NULL); | |
2794 | ||
2795 | static void __devinit logical_port_release(struct device *dev) | |
2796 | { | |
2797 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
2798 | of_node_put(port->ofdev.node); | |
2799 | } | |
2800 | ||
d1dea38d | 2801 | static int ehea_driver_sysfs_add(struct device *dev, |
d1d25aab | 2802 | struct device_driver *driver) |
d1dea38d TK |
2803 | { |
2804 | int ret; | |
2805 | ||
2806 | ret = sysfs_create_link(&driver->kobj, &dev->kobj, | |
2807 | kobject_name(&dev->kobj)); | |
2808 | if (ret == 0) { | |
2809 | ret = sysfs_create_link(&dev->kobj, &driver->kobj, | |
2810 | "driver"); | |
2811 | if (ret) | |
2812 | sysfs_remove_link(&driver->kobj, | |
2813 | kobject_name(&dev->kobj)); | |
2814 | } | |
2815 | return ret; | |
2816 | } | |
2817 | ||
2818 | static void ehea_driver_sysfs_remove(struct device *dev, | |
d1d25aab | 2819 | struct device_driver *driver) |
d1dea38d TK |
2820 | { |
2821 | struct device_driver *drv = driver; | |
2822 | ||
2823 | if (drv) { | |
2824 | sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj)); | |
2825 | sysfs_remove_link(&dev->kobj, "driver"); | |
2826 | } | |
2827 | } | |
2828 | ||
1acf2318 JBT |
2829 | static struct device *ehea_register_port(struct ehea_port *port, |
2830 | struct device_node *dn) | |
2831 | { | |
2832 | int ret; | |
2833 | ||
2834 | port->ofdev.node = of_node_get(dn); | |
6b08f3ae | 2835 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 2836 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 2837 | |
d1dea38d | 2838 | sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++); |
1acf2318 JBT |
2839 | port->ofdev.dev.release = logical_port_release; |
2840 | ||
2841 | ret = of_device_register(&port->ofdev); | |
2842 | if (ret) { | |
2843 | ehea_error("failed to register device. ret=%d", ret); | |
2844 | goto out; | |
2845 | } | |
2846 | ||
2847 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 2848 | if (ret) { |
1acf2318 JBT |
2849 | ehea_error("failed to register attributes, ret=%d", ret); |
2850 | goto out_unreg_of_dev; | |
2851 | } | |
e542aa6b | 2852 | |
d1dea38d TK |
2853 | ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver); |
2854 | if (ret) { | |
2855 | ehea_error("failed to register sysfs driver link"); | |
2856 | goto out_rem_dev_file; | |
2857 | } | |
2858 | ||
1acf2318 JBT |
2859 | return &port->ofdev.dev; |
2860 | ||
d1dea38d TK |
2861 | out_rem_dev_file: |
2862 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
1acf2318 JBT |
2863 | out_unreg_of_dev: |
2864 | of_device_unregister(&port->ofdev); | |
2865 | out: | |
2866 | return NULL; | |
2867 | } | |
2868 | ||
2869 | static void ehea_unregister_port(struct ehea_port *port) | |
2870 | { | |
d1dea38d | 2871 | ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver); |
1acf2318 JBT |
2872 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); |
2873 | of_device_unregister(&port->ofdev); | |
2874 | } | |
2875 | ||
2876 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, | |
2877 | u32 logical_port_id, | |
2878 | struct device_node *dn) | |
2879 | { | |
2880 | int ret; | |
2881 | struct net_device *dev; | |
2882 | struct ehea_port *port; | |
2883 | struct device *port_dev; | |
2884 | int jumbo; | |
2885 | ||
2886 | /* allocate memory for the port structures */ | |
2887 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
2888 | ||
2889 | if (!dev) { | |
2890 | ehea_error("no mem for net_device"); | |
2891 | ret = -ENOMEM; | |
2892 | goto out_err; | |
2893 | } | |
2894 | ||
2895 | port = netdev_priv(dev); | |
2896 | ||
2897 | sema_init(&port->port_lock, 1); | |
2898 | port->state = EHEA_PORT_DOWN; | |
2899 | port->sig_comp_iv = sq_entries / 10; | |
2900 | ||
2901 | port->adapter = adapter; | |
2902 | port->netdev = dev; | |
2903 | port->logical_port_id = logical_port_id; | |
2904 | ||
2905 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
2906 | ||
2907 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
2908 | if (!port->mc_list) { | |
2909 | ret = -ENOMEM; | |
2910 | goto out_free_ethdev; | |
2911 | } | |
2912 | ||
2913 | INIT_LIST_HEAD(&port->mc_list->list); | |
2914 | ||
2915 | ret = ehea_sense_port_attr(port); | |
2916 | if (ret) | |
2917 | goto out_free_mc_list; | |
2918 | ||
2919 | port_dev = ehea_register_port(port, dn); | |
2920 | if (!port_dev) | |
2921 | goto out_free_mc_list; | |
2922 | ||
2923 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
2924 | |
2925 | /* initialize net_device structure */ | |
7a291083 JBT |
2926 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
2927 | ||
2928 | dev->open = ehea_open; | |
8d22c971 JBT |
2929 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2930 | dev->poll_controller = ehea_netpoll; | |
2931 | #endif | |
7a291083 JBT |
2932 | dev->stop = ehea_stop; |
2933 | dev->hard_start_xmit = ehea_start_xmit; | |
2934 | dev->get_stats = ehea_get_stats; | |
2935 | dev->set_multicast_list = ehea_set_multicast_list; | |
2936 | dev->set_mac_address = ehea_set_mac_addr; | |
2937 | dev->change_mtu = ehea_change_mtu; | |
2938 | dev->vlan_rx_register = ehea_vlan_rx_register; | |
2939 | dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; | |
2940 | dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; | |
2941 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO | |
2942 | | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX | |
2943 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER | |
2944 | | NETIF_F_LLTX; | |
2945 | dev->tx_timeout = &ehea_tx_watchdog; | |
2946 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; | |
2947 | ||
c4028958 | 2948 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 | 2949 | |
f9e29228 TK |
2950 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2951 | if (ret) { | |
2952 | ret = -EIO; | |
2953 | goto out_unreg_port; | |
2954 | } | |
2955 | ||
7a291083 JBT |
2956 | ehea_set_ethtool_ops(dev); |
2957 | ||
2958 | ret = register_netdev(dev); | |
2959 | if (ret) { | |
2960 | ehea_error("register_netdev failed. ret=%d", ret); | |
f9e29228 | 2961 | goto out_dereg_bc; |
7a291083 JBT |
2962 | } |
2963 | ||
d4dc4ec9 JBT |
2964 | port->lro_max_aggr = lro_max_aggr; |
2965 | ||
1acf2318 | 2966 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 2967 | if (ret) |
1acf2318 JBT |
2968 | ehea_error("failed determining jumbo frame status for %s", |
2969 | port->netdev->name); | |
2970 | ||
9c750b7d TK |
2971 | ehea_info("%s: Jumbo frames are %sabled", dev->name, |
2972 | jumbo == 1 ? "en" : "dis"); | |
2973 | ||
44c82152 TK |
2974 | adapter->active_ports++; |
2975 | ||
1acf2318 | 2976 | return port; |
7a291083 | 2977 | |
f9e29228 TK |
2978 | out_dereg_bc: |
2979 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
2980 | ||
1acf2318 JBT |
2981 | out_unreg_port: |
2982 | ehea_unregister_port(port); | |
2983 | ||
2984 | out_free_mc_list: | |
7a291083 | 2985 | kfree(port->mc_list); |
1acf2318 JBT |
2986 | |
2987 | out_free_ethdev: | |
2988 | free_netdev(dev); | |
2989 | ||
2990 | out_err: | |
2991 | ehea_error("setting up logical port with id=%d failed, ret=%d", | |
2992 | logical_port_id, ret); | |
2993 | return NULL; | |
2994 | } | |
2995 | ||
2996 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
2997 | { | |
2998 | unregister_netdev(port->netdev); | |
2999 | ehea_unregister_port(port); | |
f9e29228 | 3000 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
1acf2318 JBT |
3001 | kfree(port->mc_list); |
3002 | free_netdev(port->netdev); | |
44c82152 | 3003 | port->adapter->active_ports--; |
7a291083 JBT |
3004 | } |
3005 | ||
3006 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
3007 | { | |
1acf2318 JBT |
3008 | struct device_node *lhea_dn; |
3009 | struct device_node *eth_dn = NULL; | |
d1d25aab | 3010 | |
9f9a3b8a | 3011 | const u32 *dn_log_port_id; |
1acf2318 JBT |
3012 | int i = 0; |
3013 | ||
6b08f3ae | 3014 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 3015 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3016 | |
40cd3a45 | 3017 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3018 | NULL); |
1acf2318 JBT |
3019 | if (!dn_log_port_id) { |
3020 | ehea_error("bad device node: eth_dn name=%s", | |
3021 | eth_dn->full_name); | |
3022 | continue; | |
3023 | } | |
7a291083 | 3024 | |
1211bb6d TK |
3025 | if (ehea_add_adapter_mr(adapter)) { |
3026 | ehea_error("creating MR failed"); | |
3027 | of_node_put(eth_dn); | |
3028 | return -EIO; | |
3029 | } | |
3030 | ||
1acf2318 JBT |
3031 | adapter->port[i] = ehea_setup_single_port(adapter, |
3032 | *dn_log_port_id, | |
3033 | eth_dn); | |
7a291083 | 3034 | if (adapter->port[i]) |
1acf2318 | 3035 | ehea_info("%s -> logical port id #%d", |
e542aa6b | 3036 | adapter->port[i]->netdev->name, |
1acf2318 | 3037 | *dn_log_port_id); |
1211bb6d TK |
3038 | else |
3039 | ehea_remove_adapter_mr(adapter); | |
3040 | ||
1acf2318 | 3041 | i++; |
1eef4e04 | 3042 | }; |
7a291083 | 3043 | |
1211bb6d | 3044 | return 0; |
1acf2318 JBT |
3045 | } |
3046 | ||
e542aa6b JBT |
3047 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3048 | u32 logical_port_id) | |
1acf2318 JBT |
3049 | { |
3050 | struct device_node *lhea_dn; | |
3051 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3052 | const u32 *dn_log_port_id; |
1acf2318 | 3053 | |
6b08f3ae | 3054 | lhea_dn = adapter->ofdev->node; |
1eef4e04 | 3055 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3056 | |
40cd3a45 | 3057 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3058 | NULL); |
1acf2318 JBT |
3059 | if (dn_log_port_id) |
3060 | if (*dn_log_port_id == logical_port_id) | |
3061 | return eth_dn; | |
1eef4e04 | 3062 | }; |
1acf2318 JBT |
3063 | |
3064 | return NULL; | |
3065 | } | |
3066 | ||
3067 | static ssize_t ehea_probe_port(struct device *dev, | |
3068 | struct device_attribute *attr, | |
3069 | const char *buf, size_t count) | |
3070 | { | |
3071 | struct ehea_adapter *adapter = dev->driver_data; | |
3072 | struct ehea_port *port; | |
3073 | struct device_node *eth_dn = NULL; | |
3074 | int i; | |
3075 | ||
3076 | u32 logical_port_id; | |
3077 | ||
a8e34fda | 3078 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3079 | |
3080 | port = ehea_get_port(adapter, logical_port_id); | |
3081 | ||
3082 | if (port) { | |
3083 | ehea_info("adding port with logical port id=%d failed. port " | |
3084 | "already configured as %s.", logical_port_id, | |
3085 | port->netdev->name); | |
3086 | return -EINVAL; | |
7a291083 | 3087 | } |
e542aa6b | 3088 | |
1acf2318 | 3089 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3090 | |
1acf2318 JBT |
3091 | if (!eth_dn) { |
3092 | ehea_info("no logical port with id %d found", logical_port_id); | |
3093 | return -EINVAL; | |
3094 | } | |
e542aa6b | 3095 | |
1211bb6d TK |
3096 | if (ehea_add_adapter_mr(adapter)) { |
3097 | ehea_error("creating MR failed"); | |
3098 | return -EIO; | |
3099 | } | |
3100 | ||
1acf2318 | 3101 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3102 | |
1eef4e04 JBT |
3103 | of_node_put(eth_dn); |
3104 | ||
1acf2318 JBT |
3105 | if (port) { |
3106 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
3107 | if (!adapter->port[i]) { | |
3108 | adapter->port[i] = port; | |
3109 | break; | |
3110 | } | |
7a291083 | 3111 | |
1acf2318 JBT |
3112 | ehea_info("added %s (logical port id=%d)", port->netdev->name, |
3113 | logical_port_id); | |
1211bb6d TK |
3114 | } else { |
3115 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3116 | return -EIO; |
1211bb6d | 3117 | } |
7a291083 | 3118 | |
1acf2318 JBT |
3119 | return (ssize_t) count; |
3120 | } | |
3121 | ||
3122 | static ssize_t ehea_remove_port(struct device *dev, | |
3123 | struct device_attribute *attr, | |
3124 | const char *buf, size_t count) | |
3125 | { | |
3126 | struct ehea_adapter *adapter = dev->driver_data; | |
3127 | struct ehea_port *port; | |
3128 | int i; | |
3129 | u32 logical_port_id; | |
3130 | ||
a8e34fda | 3131 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3132 | |
3133 | port = ehea_get_port(adapter, logical_port_id); | |
3134 | ||
3135 | if (port) { | |
3136 | ehea_info("removed %s (logical port id=%d)", port->netdev->name, | |
3137 | logical_port_id); | |
3138 | ||
3139 | ehea_shutdown_single_port(port); | |
3140 | ||
3141 | for (i=0; i < EHEA_MAX_PORTS; i++) | |
3142 | if (adapter->port[i] == port) { | |
3143 | adapter->port[i] = NULL; | |
3144 | break; | |
3145 | } | |
3146 | } else { | |
3147 | ehea_error("removing port with logical port id=%d failed. port " | |
3148 | "not configured.", logical_port_id); | |
3149 | return -EINVAL; | |
3150 | } | |
3151 | ||
1211bb6d TK |
3152 | ehea_remove_adapter_mr(adapter); |
3153 | ||
1acf2318 JBT |
3154 | return (ssize_t) count; |
3155 | } | |
3156 | ||
3157 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
3158 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
3159 | ||
6b08f3ae | 3160 | int ehea_create_device_sysfs(struct of_device *dev) |
1acf2318 | 3161 | { |
6b08f3ae | 3162 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3163 | if (ret) |
3164 | goto out; | |
3165 | ||
6b08f3ae | 3166 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3167 | out: |
7a291083 JBT |
3168 | return ret; |
3169 | } | |
3170 | ||
6b08f3ae | 3171 | void ehea_remove_device_sysfs(struct of_device *dev) |
1acf2318 | 3172 | { |
6b08f3ae JF |
3173 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3174 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3175 | } |
3176 | ||
6b08f3ae | 3177 | static int __devinit ehea_probe_adapter(struct of_device *dev, |
1acf2318 | 3178 | const struct of_device_id *id) |
7a291083 JBT |
3179 | { |
3180 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3181 | const u64 *adapter_handle; |
7a291083 JBT |
3182 | int ret; |
3183 | ||
6b08f3ae | 3184 | if (!dev || !dev->node) { |
1eef4e04 JBT |
3185 | ehea_error("Invalid ibmebus device probed"); |
3186 | return -EINVAL; | |
3187 | } | |
3188 | ||
7a291083 JBT |
3189 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
3190 | if (!adapter) { | |
3191 | ret = -ENOMEM; | |
6b08f3ae | 3192 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3193 | goto out; |
3194 | } | |
3195 | ||
44c82152 TK |
3196 | list_add(&adapter->list, &adapter_list); |
3197 | ||
6b08f3ae | 3198 | adapter->ofdev = dev; |
1acf2318 | 3199 | |
6b08f3ae | 3200 | adapter_handle = of_get_property(dev->node, "ibm,hea-handle", |
d1d25aab | 3201 | NULL); |
061bf3cd TK |
3202 | if (adapter_handle) |
3203 | adapter->handle = *adapter_handle; | |
3204 | ||
3205 | if (!adapter->handle) { | |
6b08f3ae JF |
3206 | dev_err(&dev->dev, "failed getting handle for adapter" |
3207 | " '%s'\n", dev->node->full_name); | |
7a291083 JBT |
3208 | ret = -ENODEV; |
3209 | goto out_free_ad; | |
3210 | } | |
3211 | ||
7a291083 JBT |
3212 | adapter->pd = EHEA_PD_ID; |
3213 | ||
6b08f3ae | 3214 | dev->dev.driver_data = adapter; |
7a291083 | 3215 | |
7a291083 JBT |
3216 | |
3217 | /* initialize adapter and ports */ | |
3218 | /* get adapter properties */ | |
3219 | ret = ehea_sense_adapter_attr(adapter); | |
3220 | if (ret) { | |
898eb71c | 3221 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3222 | goto out_free_ad; |
7a291083 | 3223 | } |
7a291083 JBT |
3224 | |
3225 | adapter->neq = ehea_create_eq(adapter, | |
3226 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3227 | if (!adapter->neq) { | |
1eef4e04 | 3228 | ret = -EIO; |
898eb71c | 3229 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3230 | goto out_free_ad; |
7a291083 JBT |
3231 | } |
3232 | ||
3233 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3234 | (unsigned long)adapter); | |
3235 | ||
6b08f3ae | 3236 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
38515e90 | 3237 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
3238 | "ehea_neq", adapter); |
3239 | if (ret) { | |
898eb71c | 3240 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
7a291083 JBT |
3241 | goto out_kill_eq; |
3242 | } | |
3243 | ||
1eef4e04 JBT |
3244 | ret = ehea_create_device_sysfs(dev); |
3245 | if (ret) | |
3bf76b81 | 3246 | goto out_free_irq; |
1acf2318 | 3247 | |
7a291083 JBT |
3248 | ret = ehea_setup_ports(adapter); |
3249 | if (ret) { | |
898eb71c | 3250 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3251 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3252 | } |
3253 | ||
3254 | ret = 0; | |
3255 | goto out; | |
3256 | ||
1acf2318 JBT |
3257 | out_rem_dev_sysfs: |
3258 | ehea_remove_device_sysfs(dev); | |
3259 | ||
7a291083 | 3260 | out_free_irq: |
6b08f3ae | 3261 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
7a291083 JBT |
3262 | |
3263 | out_kill_eq: | |
3264 | ehea_destroy_eq(adapter->neq); | |
3265 | ||
7a291083 JBT |
3266 | out_free_ad: |
3267 | kfree(adapter); | |
3268 | out: | |
3269 | return ret; | |
3270 | } | |
3271 | ||
6b08f3ae | 3272 | static int __devexit ehea_remove(struct of_device *dev) |
7a291083 | 3273 | { |
6b08f3ae | 3274 | struct ehea_adapter *adapter = dev->dev.driver_data; |
7a291083 JBT |
3275 | int i; |
3276 | ||
1acf2318 | 3277 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3278 | if (adapter->port[i]) { |
3279 | ehea_shutdown_single_port(adapter->port[i]); | |
3280 | adapter->port[i] = NULL; | |
3281 | } | |
1acf2318 JBT |
3282 | |
3283 | ehea_remove_device_sysfs(dev); | |
3284 | ||
3bf76b81 | 3285 | flush_scheduled_work(); |
7a291083 | 3286 | |
6b08f3ae | 3287 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3288 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3289 | |
3290 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3291 | ehea_remove_adapter_mr(adapter); |
44c82152 TK |
3292 | list_del(&adapter->list); |
3293 | ||
7a291083 | 3294 | kfree(adapter); |
44c82152 | 3295 | |
7a291083 JBT |
3296 | return 0; |
3297 | } | |
3298 | ||
3299 | static int check_module_parm(void) | |
3300 | { | |
3301 | int ret = 0; | |
3302 | ||
3303 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3304 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
3305 | ehea_info("Bad parameter: rq1_entries"); | |
3306 | ret = -EINVAL; | |
3307 | } | |
3308 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3309 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
3310 | ehea_info("Bad parameter: rq2_entries"); | |
3311 | ret = -EINVAL; | |
3312 | } | |
3313 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3314 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
3315 | ehea_info("Bad parameter: rq3_entries"); | |
3316 | ret = -EINVAL; | |
3317 | } | |
3318 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3319 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
3320 | ehea_info("Bad parameter: sq_entries"); | |
3321 | ret = -EINVAL; | |
3322 | } | |
3323 | ||
3324 | return ret; | |
3325 | } | |
3326 | ||
4c3ca4da JBT |
3327 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3328 | char *buf) | |
3329 | { | |
3330 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3331 | } | |
3332 | ||
3333 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3334 | ehea_show_capabilities, NULL); | |
3335 | ||
7a291083 JBT |
3336 | int __init ehea_module_init(void) |
3337 | { | |
3338 | int ret; | |
3339 | ||
3340 | printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", | |
3341 | DRV_VERSION); | |
3342 | ||
44c82152 TK |
3343 | |
3344 | INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); | |
2c69448b | 3345 | sema_init(&dlpar_mem_lock, 1); |
44c82152 | 3346 | |
7a291083 JBT |
3347 | ret = check_module_parm(); |
3348 | if (ret) | |
3349 | goto out; | |
44c82152 TK |
3350 | |
3351 | ret = ehea_create_busmap(); | |
3352 | if (ret) | |
3353 | goto out; | |
3354 | ||
7a291083 | 3355 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3356 | if (ret) { |
7a291083 | 3357 | ehea_error("failed registering eHEA device driver on ebus"); |
4c3ca4da JBT |
3358 | goto out; |
3359 | } | |
3360 | ||
3361 | ret = driver_create_file(&ehea_driver.driver, | |
3362 | &driver_attr_capabilities); | |
3363 | if (ret) { | |
3364 | ehea_error("failed to register capabilities attribute, ret=%d", | |
3365 | ret); | |
3366 | ibmebus_unregister_driver(&ehea_driver); | |
3367 | goto out; | |
3368 | } | |
7a291083 JBT |
3369 | |
3370 | out: | |
3371 | return ret; | |
3372 | } | |
3373 | ||
3374 | static void __exit ehea_module_exit(void) | |
3375 | { | |
3bf76b81 | 3376 | flush_scheduled_work(); |
4c3ca4da | 3377 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3378 | ibmebus_unregister_driver(&ehea_driver); |
44c82152 | 3379 | ehea_destroy_busmap(); |
7a291083 JBT |
3380 | } |
3381 | ||
3382 | module_init(ehea_module_init); | |
3383 | module_exit(ehea_module_exit); |