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Commit | Line | Data |
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7a291083 JBT |
1 | /* |
2 | * linux/drivers/net/ehea/ehea_main.c | |
3 | * | |
4 | * eHEA ethernet device driver for IBM eServer System p | |
5 | * | |
6 | * (C) Copyright IBM Corp. 2006 | |
7 | * | |
8 | * Authors: | |
508d2b5d DM |
9 | * Christoph Raisch <raisch@de.ibm.com> |
10 | * Jan-Bernd Themann <themann@de.ibm.com> | |
11 | * Thomas Klein <tklein@de.ibm.com> | |
7a291083 JBT |
12 | * |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
8c4877a4 JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
7a291083 JBT |
31 | #include <linux/in.h> |
32 | #include <linux/ip.h> | |
33 | #include <linux/tcp.h> | |
34 | #include <linux/udp.h> | |
35 | #include <linux/if.h> | |
36 | #include <linux/list.h> | |
5a0e3ad6 | 37 | #include <linux/slab.h> |
7a291083 | 38 | #include <linux/if_ether.h> |
2a6f4e49 JBT |
39 | #include <linux/notifier.h> |
40 | #include <linux/reboot.h> | |
48cfb14f | 41 | #include <linux/memory.h> |
21eee2dd | 42 | #include <asm/kexec.h> |
06f89edf | 43 | #include <linux/mutex.h> |
268bb0ce | 44 | #include <linux/prefetch.h> |
2a6f4e49 | 45 | |
7a291083 JBT |
46 | #include <net/ip.h> |
47 | ||
48 | #include "ehea.h" | |
49 | #include "ehea_qmr.h" | |
50 | #include "ehea_phyp.h" | |
51 | ||
52 | ||
53 | MODULE_LICENSE("GPL"); | |
54 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
55 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
56 | MODULE_VERSION(DRV_VERSION); | |
57 | ||
58 | ||
59 | static int msg_level = -1; | |
60 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
61 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
62 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
63 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
508d2b5d DM |
64 | static int use_mcs; |
65 | static int use_lro; | |
d4dc4ec9 | 66 | static int lro_max_aggr = EHEA_LRO_MAX_AGGR; |
18604c54 | 67 | static int num_tx_qps = EHEA_NUM_TX_QP; |
508d2b5d | 68 | static int prop_carrier_state; |
7a291083 JBT |
69 | |
70 | module_param(msg_level, int, 0); | |
71 | module_param(rq1_entries, int, 0); | |
72 | module_param(rq2_entries, int, 0); | |
73 | module_param(rq3_entries, int, 0); | |
74 | module_param(sq_entries, int, 0); | |
8759cf76 | 75 | module_param(prop_carrier_state, int, 0); |
18604c54 | 76 | module_param(use_mcs, int, 0); |
d4dc4ec9 JBT |
77 | module_param(use_lro, int, 0); |
78 | module_param(lro_max_aggr, int, 0); | |
18604c54 | 79 | module_param(num_tx_qps, int, 0); |
7a291083 | 80 | |
18604c54 | 81 | MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
7a291083 | 82 | MODULE_PARM_DESC(msg_level, "msg_level"); |
8759cf76 JBT |
83 | MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
84 | "port to stack. 1:yes, 0:no. Default = 0 "); | |
7a291083 JBT |
85 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
86 | "[2^x - 1], x = [6..14]. Default = " | |
87 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); | |
88 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
89 | "[2^x - 1], x = [6..14]. Default = " | |
90 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); | |
91 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
92 | "[2^x - 1], x = [6..14]. Default = " | |
93 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); | |
94 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
95 | "[2^x - 1], x = [6..14]. Default = " | |
96 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); | |
18072a5b | 97 | MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
7a291083 | 98 | |
d4dc4ec9 JBT |
99 | MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " |
100 | __MODULE_STRING(EHEA_LRO_MAX_AGGR)); | |
101 | MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " | |
102 | "Default = 0"); | |
103 | ||
508d2b5d | 104 | static int port_name_cnt; |
44c82152 | 105 | static LIST_HEAD(adapter_list); |
48e4cc77 | 106 | static unsigned long ehea_driver_flags; |
06f89edf | 107 | static DEFINE_MUTEX(dlpar_mem_lock); |
21eee2dd TK |
108 | struct ehea_fw_handle_array ehea_fw_handles; |
109 | struct ehea_bcmc_reg_array ehea_bcmc_regs; | |
110 | ||
d1dea38d | 111 | |
2dc11581 | 112 | static int __devinit ehea_probe_adapter(struct platform_device *dev, |
d1d25aab | 113 | const struct of_device_id *id); |
d1dea38d | 114 | |
2dc11581 | 115 | static int __devexit ehea_remove(struct platform_device *dev); |
d1dea38d TK |
116 | |
117 | static struct of_device_id ehea_device_table[] = { | |
118 | { | |
119 | .name = "lhea", | |
120 | .compatible = "IBM,lhea", | |
121 | }, | |
122 | {}, | |
123 | }; | |
b0afffe8 | 124 | MODULE_DEVICE_TABLE(of, ehea_device_table); |
d1dea38d | 125 | |
6b08f3ae | 126 | static struct of_platform_driver ehea_driver = { |
4018294b GL |
127 | .driver = { |
128 | .name = "ehea", | |
129 | .owner = THIS_MODULE, | |
130 | .of_match_table = ehea_device_table, | |
131 | }, | |
d1dea38d TK |
132 | .probe = ehea_probe_adapter, |
133 | .remove = ehea_remove, | |
134 | }; | |
135 | ||
508d2b5d DM |
136 | void ehea_dump(void *adr, int len, char *msg) |
137 | { | |
7a291083 JBT |
138 | int x; |
139 | unsigned char *deb = adr; | |
140 | for (x = 0; x < len; x += 16) { | |
8c4877a4 JP |
141 | pr_info("%s adr=%p ofs=%04x %016llx %016llx\n", |
142 | msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8])); | |
7a291083 JBT |
143 | deb += 16; |
144 | } | |
145 | } | |
146 | ||
2f69ae01 JBT |
147 | void ehea_schedule_port_reset(struct ehea_port *port) |
148 | { | |
149 | if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags)) | |
150 | schedule_work(&port->reset_task); | |
151 | } | |
152 | ||
21eee2dd TK |
153 | static void ehea_update_firmware_handles(void) |
154 | { | |
155 | struct ehea_fw_handle_entry *arr = NULL; | |
156 | struct ehea_adapter *adapter; | |
157 | int num_adapters = 0; | |
158 | int num_ports = 0; | |
159 | int num_portres = 0; | |
160 | int i = 0; | |
161 | int num_fw_handles, k, l; | |
162 | ||
163 | /* Determine number of handles */ | |
52e21b1b JBT |
164 | mutex_lock(&ehea_fw_handles.lock); |
165 | ||
21eee2dd TK |
166 | list_for_each_entry(adapter, &adapter_list, list) { |
167 | num_adapters++; | |
168 | ||
169 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
170 | struct ehea_port *port = adapter->port[k]; | |
171 | ||
172 | if (!port || (port->state != EHEA_PORT_UP)) | |
173 | continue; | |
174 | ||
175 | num_ports++; | |
176 | num_portres += port->num_def_qps + port->num_add_tx_qps; | |
177 | } | |
178 | } | |
179 | ||
180 | num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES + | |
181 | num_ports * EHEA_NUM_PORT_FW_HANDLES + | |
182 | num_portres * EHEA_NUM_PORTRES_FW_HANDLES; | |
183 | ||
184 | if (num_fw_handles) { | |
baeb2ffa | 185 | arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL); |
21eee2dd | 186 | if (!arr) |
52e21b1b | 187 | goto out; /* Keep the existing array */ |
21eee2dd TK |
188 | } else |
189 | goto out_update; | |
190 | ||
191 | list_for_each_entry(adapter, &adapter_list, list) { | |
52e21b1b JBT |
192 | if (num_adapters == 0) |
193 | break; | |
194 | ||
21eee2dd TK |
195 | for (k = 0; k < EHEA_MAX_PORTS; k++) { |
196 | struct ehea_port *port = adapter->port[k]; | |
197 | ||
8e95a202 JP |
198 | if (!port || (port->state != EHEA_PORT_UP) || |
199 | (num_ports == 0)) | |
21eee2dd TK |
200 | continue; |
201 | ||
202 | for (l = 0; | |
203 | l < port->num_def_qps + port->num_add_tx_qps; | |
204 | l++) { | |
205 | struct ehea_port_res *pr = &port->port_res[l]; | |
206 | ||
207 | arr[i].adh = adapter->handle; | |
208 | arr[i++].fwh = pr->qp->fw_handle; | |
209 | arr[i].adh = adapter->handle; | |
210 | arr[i++].fwh = pr->send_cq->fw_handle; | |
211 | arr[i].adh = adapter->handle; | |
212 | arr[i++].fwh = pr->recv_cq->fw_handle; | |
213 | arr[i].adh = adapter->handle; | |
214 | arr[i++].fwh = pr->eq->fw_handle; | |
215 | arr[i].adh = adapter->handle; | |
216 | arr[i++].fwh = pr->send_mr.handle; | |
217 | arr[i].adh = adapter->handle; | |
218 | arr[i++].fwh = pr->recv_mr.handle; | |
219 | } | |
220 | arr[i].adh = adapter->handle; | |
221 | arr[i++].fwh = port->qp_eq->fw_handle; | |
52e21b1b | 222 | num_ports--; |
21eee2dd TK |
223 | } |
224 | ||
225 | arr[i].adh = adapter->handle; | |
226 | arr[i++].fwh = adapter->neq->fw_handle; | |
227 | ||
228 | if (adapter->mr.handle) { | |
229 | arr[i].adh = adapter->handle; | |
230 | arr[i++].fwh = adapter->mr.handle; | |
231 | } | |
52e21b1b | 232 | num_adapters--; |
21eee2dd TK |
233 | } |
234 | ||
235 | out_update: | |
236 | kfree(ehea_fw_handles.arr); | |
237 | ehea_fw_handles.arr = arr; | |
238 | ehea_fw_handles.num_entries = i; | |
52e21b1b JBT |
239 | out: |
240 | mutex_unlock(&ehea_fw_handles.lock); | |
21eee2dd TK |
241 | } |
242 | ||
243 | static void ehea_update_bcmc_registrations(void) | |
244 | { | |
52e21b1b | 245 | unsigned long flags; |
21eee2dd TK |
246 | struct ehea_bcmc_reg_entry *arr = NULL; |
247 | struct ehea_adapter *adapter; | |
248 | struct ehea_mc_list *mc_entry; | |
249 | int num_registrations = 0; | |
250 | int i = 0; | |
251 | int k; | |
252 | ||
52e21b1b JBT |
253 | spin_lock_irqsave(&ehea_bcmc_regs.lock, flags); |
254 | ||
21eee2dd TK |
255 | /* Determine number of registrations */ |
256 | list_for_each_entry(adapter, &adapter_list, list) | |
257 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
258 | struct ehea_port *port = adapter->port[k]; | |
259 | ||
260 | if (!port || (port->state != EHEA_PORT_UP)) | |
261 | continue; | |
262 | ||
263 | num_registrations += 2; /* Broadcast registrations */ | |
264 | ||
265 | list_for_each_entry(mc_entry, &port->mc_list->list,list) | |
266 | num_registrations += 2; | |
267 | } | |
268 | ||
269 | if (num_registrations) { | |
baeb2ffa | 270 | arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC); |
21eee2dd | 271 | if (!arr) |
52e21b1b | 272 | goto out; /* Keep the existing array */ |
21eee2dd TK |
273 | } else |
274 | goto out_update; | |
275 | ||
276 | list_for_each_entry(adapter, &adapter_list, list) { | |
277 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
278 | struct ehea_port *port = adapter->port[k]; | |
279 | ||
280 | if (!port || (port->state != EHEA_PORT_UP)) | |
281 | continue; | |
282 | ||
52e21b1b JBT |
283 | if (num_registrations == 0) |
284 | goto out_update; | |
285 | ||
21eee2dd TK |
286 | arr[i].adh = adapter->handle; |
287 | arr[i].port_id = port->logical_port_id; | |
288 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
289 | EHEA_BCMC_UNTAGGED; | |
290 | arr[i++].macaddr = port->mac_addr; | |
291 | ||
292 | arr[i].adh = adapter->handle; | |
293 | arr[i].port_id = port->logical_port_id; | |
294 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
295 | EHEA_BCMC_VLANID_ALL; | |
296 | arr[i++].macaddr = port->mac_addr; | |
52e21b1b | 297 | num_registrations -= 2; |
21eee2dd TK |
298 | |
299 | list_for_each_entry(mc_entry, | |
300 | &port->mc_list->list, list) { | |
52e21b1b JBT |
301 | if (num_registrations == 0) |
302 | goto out_update; | |
303 | ||
21eee2dd TK |
304 | arr[i].adh = adapter->handle; |
305 | arr[i].port_id = port->logical_port_id; | |
306 | arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | | |
307 | EHEA_BCMC_MULTICAST | | |
308 | EHEA_BCMC_UNTAGGED; | |
309 | arr[i++].macaddr = mc_entry->macaddr; | |
310 | ||
311 | arr[i].adh = adapter->handle; | |
312 | arr[i].port_id = port->logical_port_id; | |
313 | arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | | |
314 | EHEA_BCMC_MULTICAST | | |
315 | EHEA_BCMC_VLANID_ALL; | |
316 | arr[i++].macaddr = mc_entry->macaddr; | |
52e21b1b | 317 | num_registrations -= 2; |
21eee2dd TK |
318 | } |
319 | } | |
320 | } | |
321 | ||
322 | out_update: | |
323 | kfree(ehea_bcmc_regs.arr); | |
324 | ehea_bcmc_regs.arr = arr; | |
325 | ehea_bcmc_regs.num_entries = i; | |
52e21b1b JBT |
326 | out: |
327 | spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags); | |
21eee2dd TK |
328 | } |
329 | ||
7a291083 JBT |
330 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) |
331 | { | |
332 | struct ehea_port *port = netdev_priv(dev); | |
333 | struct net_device_stats *stats = &port->stats; | |
334 | struct hcp_ehea_port_cb2 *cb2; | |
ce45b873 | 335 | u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0; |
7a291083 JBT |
336 | int i; |
337 | ||
338 | memset(stats, 0, sizeof(*stats)); | |
339 | ||
3d8009c7 | 340 | cb2 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 341 | if (!cb2) { |
8c4877a4 | 342 | netdev_err(dev, "no mem for cb2\n"); |
7a291083 JBT |
343 | goto out; |
344 | } | |
345 | ||
346 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
347 | port->logical_port_id, | |
348 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
349 | if (hret != H_SUCCESS) { | |
8c4877a4 | 350 | netdev_err(dev, "query_ehea_port failed\n"); |
7a291083 JBT |
351 | goto out_herr; |
352 | } | |
353 | ||
354 | if (netif_msg_hw(port)) | |
355 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
356 | ||
357 | rx_packets = 0; | |
ce45b873 | 358 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 | 359 | rx_packets += port->port_res[i].rx_packets; |
ce45b873 BL |
360 | rx_bytes += port->port_res[i].rx_bytes; |
361 | } | |
7a291083 | 362 | |
7393b87c | 363 | tx_packets = 0; |
ce45b873 | 364 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
7393b87c | 365 | tx_packets += port->port_res[i].tx_packets; |
ce45b873 BL |
366 | tx_bytes += port->port_res[i].tx_bytes; |
367 | } | |
7393b87c TK |
368 | |
369 | stats->tx_packets = tx_packets; | |
7a291083 JBT |
370 | stats->multicast = cb2->rxmcp; |
371 | stats->rx_errors = cb2->rxuerr; | |
ce45b873 BL |
372 | stats->rx_bytes = rx_bytes; |
373 | stats->tx_bytes = tx_bytes; | |
7a291083 JBT |
374 | stats->rx_packets = rx_packets; |
375 | ||
376 | out_herr: | |
3faf2693 | 377 | free_page((unsigned long)cb2); |
7a291083 JBT |
378 | out: |
379 | return stats; | |
380 | } | |
381 | ||
382 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
383 | { | |
384 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
385 | struct net_device *dev = pr->port->netdev; | |
386 | int max_index_mask = pr->rq1_skba.len - 1; | |
2c69448b JBT |
387 | int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
388 | int adder = 0; | |
7a291083 JBT |
389 | int i; |
390 | ||
2c69448b JBT |
391 | pr->rq1_skba.os_skbs = 0; |
392 | ||
393 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { | |
44fb3126 TK |
394 | if (nr_of_wqes > 0) |
395 | pr->rq1_skba.index = index; | |
2c69448b | 396 | pr->rq1_skba.os_skbs = fill_wqes; |
7a291083 | 397 | return; |
2c69448b | 398 | } |
7a291083 | 399 | |
2c69448b | 400 | for (i = 0; i < fill_wqes; i++) { |
7a291083 JBT |
401 | if (!skb_arr_rq1[index]) { |
402 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
403 | EHEA_L_PKT_SIZE); | |
404 | if (!skb_arr_rq1[index]) { | |
8c4877a4 | 405 | netdev_info(dev, "Unable to allocate enough skb in the array\n"); |
2c69448b | 406 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
407 | break; |
408 | } | |
409 | } | |
410 | index--; | |
411 | index &= max_index_mask; | |
2c69448b | 412 | adder++; |
7a291083 | 413 | } |
2c69448b JBT |
414 | |
415 | if (adder == 0) | |
416 | return; | |
417 | ||
7a291083 | 418 | /* Ring doorbell */ |
2c69448b | 419 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
420 | } |
421 | ||
e2878806 | 422 | static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) |
7a291083 | 423 | { |
7a291083 JBT |
424 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
425 | struct net_device *dev = pr->port->netdev; | |
426 | int i; | |
427 | ||
5c7e57f7 | 428 | if (nr_rq1a > pr->rq1_skba.len) { |
8c4877a4 | 429 | netdev_err(dev, "NR_RQ1A bigger than skb array len\n"); |
5c7e57f7 BL |
430 | return; |
431 | } | |
432 | ||
433 | for (i = 0; i < nr_rq1a; i++) { | |
7a291083 | 434 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); |
5c7e57f7 | 435 | if (!skb_arr_rq1[i]) { |
8c4877a4 | 436 | netdev_info(dev, "Not enough memory to allocate skb array\n"); |
e2878806 | 437 | break; |
5c7e57f7 | 438 | } |
7a291083 JBT |
439 | } |
440 | /* Ring doorbell */ | |
f76957fc | 441 | ehea_update_rq1a(pr->qp, i - 1); |
7a291083 JBT |
442 | } |
443 | ||
444 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
445 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
446 | int num_wqes, int wqe_type, int packet_size) | |
447 | { | |
448 | struct net_device *dev = pr->port->netdev; | |
449 | struct ehea_qp *qp = pr->qp; | |
450 | struct sk_buff **skb_arr = q_skba->arr; | |
451 | struct ehea_rwqe *rwqe; | |
452 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 453 | int adder = 0; |
7a291083 JBT |
454 | int ret = 0; |
455 | ||
456 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 457 | q_skba->os_skbs = 0; |
7a291083 | 458 | |
2c69448b JBT |
459 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
460 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 461 | return ret; |
2c69448b | 462 | } |
7a291083 JBT |
463 | |
464 | index = q_skba->index; | |
465 | max_index_mask = q_skba->len - 1; | |
466 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 467 | u64 tmp_addr; |
89d71a66 ED |
468 | struct sk_buff *skb; |
469 | ||
470 | skb = netdev_alloc_skb_ip_align(dev, packet_size); | |
7a291083 | 471 | if (!skb) { |
7a291083 | 472 | q_skba->os_skbs = fill_wqes - i; |
e2878806 | 473 | if (q_skba->os_skbs == q_skba->len - 2) { |
8c4877a4 JP |
474 | netdev_info(pr->port->netdev, |
475 | "rq%i ran dry - no mem for skb\n", | |
476 | rq_nr); | |
e2878806 TK |
477 | ret = -ENOMEM; |
478 | } | |
7a291083 JBT |
479 | break; |
480 | } | |
7a291083 JBT |
481 | |
482 | skb_arr[index] = skb; | |
2c69448b JBT |
483 | tmp_addr = ehea_map_vaddr(skb->data); |
484 | if (tmp_addr == -1) { | |
485 | dev_kfree_skb(skb); | |
486 | q_skba->os_skbs = fill_wqes - i; | |
487 | ret = 0; | |
488 | break; | |
489 | } | |
7a291083 JBT |
490 | |
491 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
492 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 493 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 494 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 495 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
496 | rwqe->sg_list[0].len = packet_size; |
497 | rwqe->data_segments = 1; | |
498 | ||
499 | index++; | |
500 | index &= max_index_mask; | |
2c69448b | 501 | adder++; |
7a291083 | 502 | } |
44c82152 | 503 | |
7a291083 | 504 | q_skba->index = index; |
2c69448b JBT |
505 | if (adder == 0) |
506 | goto out; | |
7a291083 JBT |
507 | |
508 | /* Ring doorbell */ | |
509 | iosync(); | |
510 | if (rq_nr == 2) | |
2c69448b | 511 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 512 | else |
2c69448b | 513 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 514 | out: |
7a291083 JBT |
515 | return ret; |
516 | } | |
517 | ||
518 | ||
519 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
520 | { | |
521 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
522 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
89d71a66 | 523 | EHEA_RQ2_PKT_SIZE); |
7a291083 JBT |
524 | } |
525 | ||
526 | ||
527 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
528 | { | |
529 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
530 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
89d71a66 | 531 | EHEA_MAX_PACKET_SIZE); |
7a291083 JBT |
532 | } |
533 | ||
534 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
535 | { | |
536 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
537 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
538 | return 0; | |
539 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
540 | (cqe->header_length == 0)) | |
541 | return 0; | |
542 | return -EINVAL; | |
543 | } | |
544 | ||
545 | static inline void ehea_fill_skb(struct net_device *dev, | |
546 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
547 | { | |
548 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
549 | ||
550 | skb_put(skb, length); | |
7a291083 | 551 | skb->protocol = eth_type_trans(skb, dev); |
71085ce8 BL |
552 | |
553 | /* The packet was not an IPV4 packet so a complemented checksum was | |
554 | calculated. The value is found in the Internet Checksum field. */ | |
555 | if (cqe->status & EHEA_CQE_BLIND_CKSUM) { | |
556 | skb->ip_summed = CHECKSUM_COMPLETE; | |
557 | skb->csum = csum_unfold(~cqe->inet_checksum_value); | |
558 | } else | |
559 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
7a291083 JBT |
560 | } |
561 | ||
562 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
563 | int arr_len, | |
564 | struct ehea_cqe *cqe) | |
565 | { | |
566 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
567 | struct sk_buff *skb; | |
568 | void *pref; | |
569 | int x; | |
570 | ||
571 | x = skb_index + 1; | |
572 | x &= (arr_len - 1); | |
573 | ||
574 | pref = skb_array[x]; | |
0b2febf3 HH |
575 | if (pref) { |
576 | prefetchw(pref); | |
577 | prefetchw(pref + EHEA_CACHE_LINE); | |
578 | ||
579 | pref = (skb_array[x]->data); | |
580 | prefetch(pref); | |
581 | prefetch(pref + EHEA_CACHE_LINE); | |
582 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
583 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
584 | } | |
585 | ||
7a291083 JBT |
586 | skb = skb_array[skb_index]; |
587 | skb_array[skb_index] = NULL; | |
588 | return skb; | |
589 | } | |
590 | ||
591 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
592 | int arr_len, int wqe_index) | |
593 | { | |
594 | struct sk_buff *skb; | |
595 | void *pref; | |
596 | int x; | |
597 | ||
598 | x = wqe_index + 1; | |
599 | x &= (arr_len - 1); | |
600 | ||
601 | pref = skb_array[x]; | |
0b2febf3 HH |
602 | if (pref) { |
603 | prefetchw(pref); | |
604 | prefetchw(pref + EHEA_CACHE_LINE); | |
7a291083 | 605 | |
0b2febf3 HH |
606 | pref = (skb_array[x]->data); |
607 | prefetchw(pref); | |
608 | prefetchw(pref + EHEA_CACHE_LINE); | |
609 | } | |
7a291083 JBT |
610 | |
611 | skb = skb_array[wqe_index]; | |
612 | skb_array[wqe_index] = NULL; | |
613 | return skb; | |
614 | } | |
615 | ||
616 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
617 | struct ehea_cqe *cqe, int *processed_rq2, | |
618 | int *processed_rq3) | |
619 | { | |
620 | struct sk_buff *skb; | |
621 | ||
acbddb59 JBT |
622 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
623 | pr->p_stats.err_tcp_cksum++; | |
624 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
625 | pr->p_stats.err_ip_cksum++; | |
626 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
627 | pr->p_stats.err_frame_crc++; | |
628 | ||
7a291083 JBT |
629 | if (rq == 2) { |
630 | *processed_rq2 += 1; | |
631 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
632 | dev_kfree_skb(skb); | |
633 | } else if (rq == 3) { | |
634 | *processed_rq3 += 1; | |
635 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
636 | dev_kfree_skb(skb); | |
637 | } | |
638 | ||
639 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
58dd8258 | 640 | if (netif_msg_rx_err(pr->port)) { |
8c4877a4 JP |
641 | pr_err("Critical receive error for QP %d. Resetting port.\n", |
642 | pr->qp->init_attr.qp_nr); | |
58dd8258 TK |
643 | ehea_dump(cqe, sizeof(*cqe), "CQE"); |
644 | } | |
2f69ae01 | 645 | ehea_schedule_port_reset(pr->port); |
7a291083 JBT |
646 | return 1; |
647 | } | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
d4dc4ec9 JBT |
652 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
653 | void **tcph, u64 *hdr_flags, void *priv) | |
654 | { | |
655 | struct ehea_cqe *cqe = priv; | |
656 | unsigned int ip_len; | |
657 | struct iphdr *iph; | |
658 | ||
659 | /* non tcp/udp packets */ | |
660 | if (!cqe->header_length) | |
661 | return -1; | |
662 | ||
663 | /* non tcp packet */ | |
664 | skb_reset_network_header(skb); | |
665 | iph = ip_hdr(skb); | |
666 | if (iph->protocol != IPPROTO_TCP) | |
667 | return -1; | |
668 | ||
669 | ip_len = ip_hdrlen(skb); | |
670 | skb_set_transport_header(skb, ip_len); | |
671 | *tcph = tcp_hdr(skb); | |
672 | ||
673 | /* check if ip header and tcp header are complete */ | |
3ff2cd23 | 674 | if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb)) |
d4dc4ec9 JBT |
675 | return -1; |
676 | ||
677 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
678 | *iphdr = iph; | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
683 | static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, | |
684 | struct sk_buff *skb) | |
685 | { | |
8e95a202 JP |
686 | int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) && |
687 | pr->port->vgrp); | |
d4dc4ec9 | 688 | |
c7757fdb | 689 | if (skb->dev->features & NETIF_F_LRO) { |
d4dc4ec9 JBT |
690 | if (vlan_extracted) |
691 | lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, | |
692 | pr->port->vgrp, | |
693 | cqe->vlan_tag, | |
694 | cqe); | |
695 | else | |
696 | lro_receive_skb(&pr->lro_mgr, skb, cqe); | |
697 | } else { | |
698 | if (vlan_extracted) | |
699 | vlan_hwaccel_receive_skb(skb, pr->port->vgrp, | |
700 | cqe->vlan_tag); | |
701 | else | |
702 | netif_receive_skb(skb); | |
703 | } | |
704 | } | |
705 | ||
bea3348e SH |
706 | static int ehea_proc_rwqes(struct net_device *dev, |
707 | struct ehea_port_res *pr, | |
708 | int budget) | |
7a291083 | 709 | { |
18604c54 | 710 | struct ehea_port *port = pr->port; |
7a291083 JBT |
711 | struct ehea_qp *qp = pr->qp; |
712 | struct ehea_cqe *cqe; | |
713 | struct sk_buff *skb; | |
714 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
715 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
716 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
717 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
718 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
719 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
720 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
ce45b873 | 721 | u64 processed_bytes = 0; |
bea3348e | 722 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
723 | |
724 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
725 | last_wqe_index = 0; | |
7a291083 | 726 | |
7a291083 | 727 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 728 | while ((processed < budget) && cqe) { |
7a291083 JBT |
729 | ehea_inc_rq1(qp); |
730 | processed_rq1++; | |
731 | processed++; | |
7a291083 JBT |
732 | if (netif_msg_rx_status(port)) |
733 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
734 | ||
735 | last_wqe_index = wqe_index; | |
736 | rmb(); | |
737 | if (!ehea_check_cqe(cqe, &rq)) { | |
508d2b5d DM |
738 | if (rq == 1) { |
739 | /* LL RQ1 */ | |
7a291083 JBT |
740 | skb = get_skb_by_index_ll(skb_arr_rq1, |
741 | skb_arr_rq1_len, | |
742 | wqe_index); | |
743 | if (unlikely(!skb)) { | |
782615ae | 744 | netif_info(port, rx_err, dev, |
8c4877a4 | 745 | "LL rq1: skb=NULL\n"); |
18604c54 | 746 | |
bea3348e | 747 | skb = netdev_alloc_skb(dev, |
7a291083 | 748 | EHEA_L_PKT_SIZE); |
5c7e57f7 | 749 | if (!skb) { |
782615ae | 750 | netdev_err(dev, "Not enough memory to allocate skb\n"); |
7a291083 | 751 | break; |
5c7e57f7 | 752 | } |
7a291083 | 753 | } |
508d2b5d | 754 | skb_copy_to_linear_data(skb, ((char *)cqe) + 64, |
d1d25aab | 755 | cqe->num_bytes_transfered - 4); |
bea3348e | 756 | ehea_fill_skb(dev, skb, cqe); |
508d2b5d DM |
757 | } else if (rq == 2) { |
758 | /* RQ2 */ | |
7a291083 JBT |
759 | skb = get_skb_by_index(skb_arr_rq2, |
760 | skb_arr_rq2_len, cqe); | |
761 | if (unlikely(!skb)) { | |
8c4877a4 JP |
762 | netif_err(port, rx_err, dev, |
763 | "rq2: skb=NULL\n"); | |
7a291083 JBT |
764 | break; |
765 | } | |
bea3348e | 766 | ehea_fill_skb(dev, skb, cqe); |
7a291083 | 767 | processed_rq2++; |
508d2b5d DM |
768 | } else { |
769 | /* RQ3 */ | |
7a291083 JBT |
770 | skb = get_skb_by_index(skb_arr_rq3, |
771 | skb_arr_rq3_len, cqe); | |
772 | if (unlikely(!skb)) { | |
8c4877a4 JP |
773 | netif_err(port, rx_err, dev, |
774 | "rq3: skb=NULL\n"); | |
7a291083 JBT |
775 | break; |
776 | } | |
bea3348e | 777 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
778 | processed_rq3++; |
779 | } | |
780 | ||
ce45b873 | 781 | processed_bytes += skb->len; |
d4dc4ec9 | 782 | ehea_proc_skb(pr, cqe, skb); |
18604c54 | 783 | } else { |
acbddb59 | 784 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
785 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
786 | &processed_rq2, | |
787 | &processed_rq3); | |
788 | if (port_reset) | |
789 | break; | |
790 | } | |
791 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
792 | } | |
c7757fdb | 793 | if (dev->features & NETIF_F_LRO) |
d4dc4ec9 | 794 | lro_flush_all(&pr->lro_mgr); |
7a291083 | 795 | |
7a291083 | 796 | pr->rx_packets += processed; |
ce45b873 | 797 | pr->rx_bytes += processed_bytes; |
7a291083 JBT |
798 | |
799 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
800 | ehea_refill_rq2(pr, processed_rq2); | |
801 | ehea_refill_rq3(pr, processed_rq3); | |
802 | ||
bea3348e | 803 | return processed; |
7a291083 JBT |
804 | } |
805 | ||
2928db4c AD |
806 | #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull |
807 | ||
808 | static void reset_sq_restart_flag(struct ehea_port *port) | |
809 | { | |
810 | int i; | |
811 | ||
812 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
813 | struct ehea_port_res *pr = &port->port_res[i]; | |
814 | pr->sq_restart_flag = 0; | |
815 | } | |
a8bb69f7 | 816 | wake_up(&port->restart_wq); |
2928db4c AD |
817 | } |
818 | ||
819 | static void check_sqs(struct ehea_port *port) | |
820 | { | |
821 | struct ehea_swqe *swqe; | |
822 | int swqe_index; | |
823 | int i, k; | |
824 | ||
825 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
826 | struct ehea_port_res *pr = &port->port_res[i]; | |
a8bb69f7 | 827 | int ret; |
2928db4c AD |
828 | k = 0; |
829 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
830 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
831 | atomic_dec(&pr->swqe_avail); | |
832 | ||
833 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
834 | swqe->wr_id = SWQE_RESTART_CHECK; | |
835 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
836 | swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT; | |
837 | swqe->immediate_data_length = 80; | |
838 | ||
839 | ehea_post_swqe(pr->qp, swqe); | |
840 | ||
a8bb69f7 BL |
841 | ret = wait_event_timeout(port->restart_wq, |
842 | pr->sq_restart_flag == 0, | |
843 | msecs_to_jiffies(100)); | |
844 | ||
845 | if (!ret) { | |
8c4877a4 | 846 | pr_err("HW/SW queues out of sync\n"); |
a8bb69f7 BL |
847 | ehea_schedule_port_reset(pr->port); |
848 | return; | |
2928db4c AD |
849 | } |
850 | } | |
2928db4c AD |
851 | } |
852 | ||
853 | ||
18604c54 | 854 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 855 | { |
acbddb59 | 856 | struct sk_buff *skb; |
7a291083 JBT |
857 | struct ehea_cq *send_cq = pr->send_cq; |
858 | struct ehea_cqe *cqe; | |
18604c54 | 859 | int quota = my_quota; |
7a291083 JBT |
860 | int cqe_counter = 0; |
861 | int swqe_av = 0; | |
acbddb59 | 862 | int index; |
7a291083 JBT |
863 | unsigned long flags; |
864 | ||
18604c54 | 865 | cqe = ehea_poll_cq(send_cq); |
508d2b5d | 866 | while (cqe && (quota > 0)) { |
18604c54 JBT |
867 | ehea_inc_cq(send_cq); |
868 | ||
7a291083 JBT |
869 | cqe_counter++; |
870 | rmb(); | |
2928db4c AD |
871 | |
872 | if (cqe->wr_id == SWQE_RESTART_CHECK) { | |
873 | pr->sq_restart_flag = 1; | |
874 | swqe_av++; | |
875 | break; | |
876 | } | |
877 | ||
7a291083 | 878 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { |
8c4877a4 JP |
879 | pr_err("Bad send completion status=0x%04X\n", |
880 | cqe->status); | |
ea96ceac | 881 | |
7a291083 JBT |
882 | if (netif_msg_tx_err(pr->port)) |
883 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
ea96ceac TK |
884 | |
885 | if (cqe->status & EHEA_CQE_STAT_RESET_MASK) { | |
8c4877a4 | 886 | pr_err("Resetting port\n"); |
ea96ceac TK |
887 | ehea_schedule_port_reset(pr->port); |
888 | break; | |
889 | } | |
7a291083 JBT |
890 | } |
891 | ||
892 | if (netif_msg_tx_done(pr->port)) | |
893 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
894 | ||
895 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
896 | == EHEA_SWQE2_TYPE)) { |
897 | ||
898 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
899 | skb = pr->sq_skba.arr[index]; | |
900 | dev_kfree_skb(skb); | |
901 | pr->sq_skba.arr[index] = NULL; | |
902 | } | |
7a291083 JBT |
903 | |
904 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
905 | quota--; | |
18604c54 JBT |
906 | |
907 | cqe = ehea_poll_cq(send_cq); | |
ee289b64 | 908 | } |
7a291083 JBT |
909 | |
910 | ehea_update_feca(send_cq, cqe_counter); | |
911 | atomic_add(swqe_av, &pr->swqe_avail); | |
912 | ||
913 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 914 | |
7a291083 JBT |
915 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
916 | >= pr->swqe_refill_th)) { | |
917 | netif_wake_queue(pr->port->netdev); | |
918 | pr->queue_stopped = 0; | |
919 | } | |
920 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
5b27d427 | 921 | wake_up(&pr->port->swqe_avail_wq); |
7a291083 | 922 | |
18604c54 | 923 | return cqe; |
7a291083 JBT |
924 | } |
925 | ||
18604c54 | 926 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
bea3348e | 927 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 928 | |
bea3348e | 929 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 930 | { |
508d2b5d DM |
931 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, |
932 | napi); | |
bea3348e | 933 | struct net_device *dev = pr->port->netdev; |
18604c54 JBT |
934 | struct ehea_cqe *cqe; |
935 | struct ehea_cqe *cqe_skb = NULL; | |
936 | int force_irq, wqe_index; | |
bea3348e | 937 | int rx = 0; |
18604c54 JBT |
938 | |
939 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
bea3348e SH |
940 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
941 | ||
942 | if (!force_irq) | |
943 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
18604c54 | 944 | |
bea3348e | 945 | while ((rx != budget) || force_irq) { |
18604c54 | 946 | pr->poll_counter = 0; |
bea3348e | 947 | force_irq = 0; |
288379f0 | 948 | napi_complete(napi); |
18604c54 JBT |
949 | ehea_reset_cq_ep(pr->recv_cq); |
950 | ehea_reset_cq_ep(pr->send_cq); | |
951 | ehea_reset_cq_n1(pr->recv_cq); | |
952 | ehea_reset_cq_n1(pr->send_cq); | |
a91fb143 | 953 | rmb(); |
18604c54 JBT |
954 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); |
955 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
956 | ||
e542aa6b | 957 | if (!cqe && !cqe_skb) |
bea3348e | 958 | return rx; |
18604c54 | 959 | |
288379f0 | 960 | if (!napi_reschedule(napi)) |
bea3348e | 961 | return rx; |
18604c54 | 962 | |
bea3348e SH |
963 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
964 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
965 | } | |
e542aa6b | 966 | |
bea3348e SH |
967 | pr->poll_counter++; |
968 | return rx; | |
7a291083 JBT |
969 | } |
970 | ||
8d22c971 JBT |
971 | #ifdef CONFIG_NET_POLL_CONTROLLER |
972 | static void ehea_netpoll(struct net_device *dev) | |
973 | { | |
974 | struct ehea_port *port = netdev_priv(dev); | |
bea3348e | 975 | int i; |
8d22c971 | 976 | |
bea3348e | 977 | for (i = 0; i < port->num_def_qps; i++) |
288379f0 | 978 | napi_schedule(&port->port_res[i].napi); |
8d22c971 JBT |
979 | } |
980 | #endif | |
981 | ||
7d12e780 | 982 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
983 | { |
984 | struct ehea_port_res *pr = param; | |
18604c54 | 985 | |
288379f0 | 986 | napi_schedule(&pr->napi); |
18604c54 | 987 | |
7a291083 JBT |
988 | return IRQ_HANDLED; |
989 | } | |
990 | ||
7d12e780 | 991 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
992 | { |
993 | struct ehea_port *port = param; | |
994 | struct ehea_eqe *eqe; | |
d2db9eea | 995 | struct ehea_qp *qp; |
7a291083 | 996 | u32 qp_token; |
ea96ceac TK |
997 | u64 resource_type, aer, aerr; |
998 | int reset_port = 0; | |
7a291083 JBT |
999 | |
1000 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 1001 | |
7a291083 | 1002 | while (eqe) { |
7a291083 | 1003 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
8c4877a4 JP |
1004 | pr_err("QP aff_err: entry=0x%llx, token=0x%x\n", |
1005 | eqe->entry, qp_token); | |
d2db9eea JBT |
1006 | |
1007 | qp = port->port_res[qp_token].qp; | |
ea96ceac TK |
1008 | |
1009 | resource_type = ehea_error_data(port->adapter, qp->fw_handle, | |
1010 | &aer, &aerr); | |
1011 | ||
1012 | if (resource_type == EHEA_AER_RESTYPE_QP) { | |
1013 | if ((aer & EHEA_AER_RESET_MASK) || | |
1014 | (aerr & EHEA_AERR_RESET_MASK)) | |
1015 | reset_port = 1; | |
1016 | } else | |
1017 | reset_port = 1; /* Reset in case of CQ or EQ error */ | |
1018 | ||
bb3a6449 | 1019 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
1020 | } |
1021 | ||
ea96ceac | 1022 | if (reset_port) { |
8c4877a4 | 1023 | pr_err("Resetting port\n"); |
ea96ceac TK |
1024 | ehea_schedule_port_reset(port); |
1025 | } | |
d2db9eea | 1026 | |
7a291083 JBT |
1027 | return IRQ_HANDLED; |
1028 | } | |
1029 | ||
1030 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
1031 | int logical_port) | |
1032 | { | |
1033 | int i; | |
1034 | ||
1acf2318 | 1035 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 1036 | if (adapter->port[i]) |
d1d25aab | 1037 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 1038 | return adapter->port[i]; |
7a291083 JBT |
1039 | return NULL; |
1040 | } | |
1041 | ||
1042 | int ehea_sense_port_attr(struct ehea_port *port) | |
1043 | { | |
1044 | int ret; | |
1045 | u64 hret; | |
1046 | struct hcp_ehea_port_cb0 *cb0; | |
1047 | ||
508d2b5d | 1048 | /* may be called via ehea_neq_tasklet() */ |
3faf2693 | 1049 | cb0 = (void *)get_zeroed_page(GFP_ATOMIC); |
508d2b5d | 1050 | if (!cb0) { |
8c4877a4 | 1051 | pr_err("no mem for cb0\n"); |
7a291083 JBT |
1052 | ret = -ENOMEM; |
1053 | goto out; | |
1054 | } | |
1055 | ||
1056 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
1057 | port->logical_port_id, H_PORT_CB0, | |
1058 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
1059 | cb0); | |
1060 | if (hret != H_SUCCESS) { | |
1061 | ret = -EIO; | |
1062 | goto out_free; | |
1063 | } | |
1064 | ||
1065 | /* MAC address */ | |
1066 | port->mac_addr = cb0->port_mac_addr << 16; | |
1067 | ||
508d2b5d | 1068 | if (!is_valid_ether_addr((u8 *)&port->mac_addr)) { |
7a291083 JBT |
1069 | ret = -EADDRNOTAVAIL; |
1070 | goto out_free; | |
1071 | } | |
1072 | ||
1073 | /* Port speed */ | |
1074 | switch (cb0->port_speed) { | |
1075 | case H_SPEED_10M_H: | |
1076 | port->port_speed = EHEA_SPEED_10M; | |
1077 | port->full_duplex = 0; | |
1078 | break; | |
1079 | case H_SPEED_10M_F: | |
1080 | port->port_speed = EHEA_SPEED_10M; | |
1081 | port->full_duplex = 1; | |
1082 | break; | |
1083 | case H_SPEED_100M_H: | |
1084 | port->port_speed = EHEA_SPEED_100M; | |
1085 | port->full_duplex = 0; | |
1086 | break; | |
1087 | case H_SPEED_100M_F: | |
1088 | port->port_speed = EHEA_SPEED_100M; | |
1089 | port->full_duplex = 1; | |
1090 | break; | |
1091 | case H_SPEED_1G_F: | |
1092 | port->port_speed = EHEA_SPEED_1G; | |
1093 | port->full_duplex = 1; | |
1094 | break; | |
1095 | case H_SPEED_10G_F: | |
1096 | port->port_speed = EHEA_SPEED_10G; | |
1097 | port->full_duplex = 1; | |
1098 | break; | |
1099 | default: | |
1100 | port->port_speed = 0; | |
1101 | port->full_duplex = 0; | |
1102 | break; | |
1103 | } | |
1104 | ||
e919b593 | 1105 | port->autoneg = 1; |
18604c54 | 1106 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 1107 | |
7a291083 | 1108 | /* Number of default QPs */ |
18604c54 JBT |
1109 | if (use_mcs) |
1110 | port->num_def_qps = cb0->num_default_qps; | |
1111 | else | |
1112 | port->num_def_qps = 1; | |
7a291083 JBT |
1113 | |
1114 | if (!port->num_def_qps) { | |
1115 | ret = -EINVAL; | |
1116 | goto out_free; | |
1117 | } | |
1118 | ||
18604c54 JBT |
1119 | port->num_tx_qps = num_tx_qps; |
1120 | ||
1121 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
1122 | port->num_add_tx_qps = 0; |
1123 | else | |
18604c54 | 1124 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
1125 | |
1126 | ret = 0; | |
1127 | out_free: | |
1128 | if (ret || netif_msg_probe(port)) | |
1129 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
3faf2693 | 1130 | free_page((unsigned long)cb0); |
7a291083 JBT |
1131 | out: |
1132 | return ret; | |
1133 | } | |
1134 | ||
1135 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
1136 | { | |
1137 | struct hcp_ehea_port_cb4 *cb4; | |
1138 | u64 hret; | |
1139 | int ret = 0; | |
1140 | ||
3faf2693 | 1141 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1142 | if (!cb4) { |
8c4877a4 | 1143 | pr_err("no mem for cb4\n"); |
7a291083 JBT |
1144 | ret = -ENOMEM; |
1145 | goto out; | |
1146 | } | |
1147 | ||
1148 | cb4->port_speed = port_speed; | |
1149 | ||
1150 | netif_carrier_off(port->netdev); | |
1151 | ||
1152 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1153 | port->logical_port_id, | |
1154 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
1155 | if (hret == H_SUCCESS) { | |
1156 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
1157 | ||
1158 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
1159 | port->logical_port_id, | |
1160 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
1161 | cb4); | |
1162 | if (hret == H_SUCCESS) { | |
1163 | switch (cb4->port_speed) { | |
1164 | case H_SPEED_10M_H: | |
1165 | port->port_speed = EHEA_SPEED_10M; | |
1166 | port->full_duplex = 0; | |
1167 | break; | |
1168 | case H_SPEED_10M_F: | |
1169 | port->port_speed = EHEA_SPEED_10M; | |
1170 | port->full_duplex = 1; | |
1171 | break; | |
1172 | case H_SPEED_100M_H: | |
1173 | port->port_speed = EHEA_SPEED_100M; | |
1174 | port->full_duplex = 0; | |
1175 | break; | |
1176 | case H_SPEED_100M_F: | |
1177 | port->port_speed = EHEA_SPEED_100M; | |
1178 | port->full_duplex = 1; | |
1179 | break; | |
1180 | case H_SPEED_1G_F: | |
1181 | port->port_speed = EHEA_SPEED_1G; | |
1182 | port->full_duplex = 1; | |
1183 | break; | |
1184 | case H_SPEED_10G_F: | |
1185 | port->port_speed = EHEA_SPEED_10G; | |
1186 | port->full_duplex = 1; | |
1187 | break; | |
1188 | default: | |
1189 | port->port_speed = 0; | |
1190 | port->full_duplex = 0; | |
1191 | break; | |
1192 | } | |
1193 | } else { | |
8c4877a4 | 1194 | pr_err("Failed sensing port speed\n"); |
7a291083 JBT |
1195 | ret = -EIO; |
1196 | } | |
1197 | } else { | |
1198 | if (hret == H_AUTHORITY) { | |
8c4877a4 | 1199 | pr_info("Hypervisor denied setting port speed\n"); |
7a291083 JBT |
1200 | ret = -EPERM; |
1201 | } else { | |
1202 | ret = -EIO; | |
8c4877a4 | 1203 | pr_err("Failed setting port speed\n"); |
7a291083 JBT |
1204 | } |
1205 | } | |
8759cf76 JBT |
1206 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
1207 | netif_carrier_on(port->netdev); | |
1208 | ||
3faf2693 | 1209 | free_page((unsigned long)cb4); |
7a291083 JBT |
1210 | out: |
1211 | return ret; | |
1212 | } | |
1213 | ||
1214 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
1215 | { | |
1216 | int ret; | |
1217 | u8 ec; | |
1218 | u8 portnum; | |
1219 | struct ehea_port *port; | |
8c4877a4 | 1220 | struct net_device *dev; |
7a291083 JBT |
1221 | |
1222 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
1223 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
1224 | port = ehea_get_port(adapter, portnum); | |
8c4877a4 | 1225 | dev = port->netdev; |
7a291083 JBT |
1226 | |
1227 | switch (ec) { | |
1228 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
1229 | ||
1230 | if (!port) { | |
8c4877a4 | 1231 | netdev_err(dev, "unknown portnum %x\n", portnum); |
7a291083 JBT |
1232 | break; |
1233 | } | |
1234 | ||
1235 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
8c4877a4 | 1236 | if (!netif_carrier_ok(dev)) { |
1e1675cc | 1237 | ret = ehea_sense_port_attr(port); |
7a291083 | 1238 | if (ret) { |
8c4877a4 | 1239 | netdev_err(dev, "failed resensing port attributes\n"); |
7a291083 JBT |
1240 | break; |
1241 | } | |
1242 | ||
8c4877a4 JP |
1243 | netif_info(port, link, dev, |
1244 | "Logical port up: %dMbps %s Duplex\n", | |
1245 | port->port_speed, | |
1246 | port->full_duplex == 1 ? | |
1247 | "Full" : "Half"); | |
7a291083 | 1248 | |
8c4877a4 JP |
1249 | netif_carrier_on(dev); |
1250 | netif_wake_queue(dev); | |
7a291083 JBT |
1251 | } |
1252 | } else | |
8c4877a4 JP |
1253 | if (netif_carrier_ok(dev)) { |
1254 | netif_info(port, link, dev, | |
1255 | "Logical port down\n"); | |
1256 | netif_carrier_off(dev); | |
1257 | netif_stop_queue(dev); | |
7a291083 JBT |
1258 | } |
1259 | ||
1260 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 1261 | port->phy_link = EHEA_PHY_LINK_UP; |
8c4877a4 JP |
1262 | netif_info(port, link, dev, |
1263 | "Physical port up\n"); | |
8759cf76 | 1264 | if (prop_carrier_state) |
8c4877a4 | 1265 | netif_carrier_on(dev); |
7a291083 | 1266 | } else { |
8759cf76 | 1267 | port->phy_link = EHEA_PHY_LINK_DOWN; |
8c4877a4 JP |
1268 | netif_info(port, link, dev, |
1269 | "Physical port down\n"); | |
8759cf76 | 1270 | if (prop_carrier_state) |
8c4877a4 | 1271 | netif_carrier_off(dev); |
7a291083 JBT |
1272 | } |
1273 | ||
1274 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
8c4877a4 JP |
1275 | netdev_info(dev, |
1276 | "External switch port is primary port\n"); | |
7a291083 | 1277 | else |
8c4877a4 JP |
1278 | netdev_info(dev, |
1279 | "External switch port is backup port\n"); | |
7a291083 JBT |
1280 | |
1281 | break; | |
1282 | case EHEA_EC_ADAPTER_MALFUNC: | |
8c4877a4 | 1283 | netdev_err(dev, "Adapter malfunction\n"); |
7a291083 JBT |
1284 | break; |
1285 | case EHEA_EC_PORT_MALFUNC: | |
8c4877a4 JP |
1286 | netdev_info(dev, "Port malfunction\n"); |
1287 | netif_carrier_off(dev); | |
1288 | netif_stop_queue(dev); | |
7a291083 JBT |
1289 | break; |
1290 | default: | |
8c4877a4 | 1291 | netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe); |
7a291083 JBT |
1292 | break; |
1293 | } | |
1294 | } | |
1295 | ||
1296 | static void ehea_neq_tasklet(unsigned long data) | |
1297 | { | |
508d2b5d | 1298 | struct ehea_adapter *adapter = (struct ehea_adapter *)data; |
7a291083 JBT |
1299 | struct ehea_eqe *eqe; |
1300 | u64 event_mask; | |
1301 | ||
1302 | eqe = ehea_poll_eq(adapter->neq); | |
8c4877a4 | 1303 | pr_debug("eqe=%p\n", eqe); |
7a291083 JBT |
1304 | |
1305 | while (eqe) { | |
8c4877a4 | 1306 | pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry); |
7a291083 JBT |
1307 | ehea_parse_eqe(adapter, eqe->entry); |
1308 | eqe = ehea_poll_eq(adapter->neq); | |
8c4877a4 | 1309 | pr_debug("next eqe=%p\n", eqe); |
7a291083 JBT |
1310 | } |
1311 | ||
1312 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1313 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1314 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1315 | ||
1316 | ehea_h_reset_events(adapter->handle, | |
1317 | adapter->neq->fw_handle, event_mask); | |
1318 | } | |
1319 | ||
7d12e780 | 1320 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1321 | { |
1322 | struct ehea_adapter *adapter = param; | |
1323 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1324 | return IRQ_HANDLED; | |
1325 | } | |
1326 | ||
1327 | ||
1328 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1329 | { | |
1330 | int ret; | |
1331 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1332 | ||
f76957fc | 1333 | ehea_init_fill_rq1(pr, pr->rq1_skba.len); |
7a291083 | 1334 | |
e2878806 | 1335 | ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); |
7a291083 JBT |
1336 | |
1337 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
1338 | ||
1339 | return ret; | |
1340 | } | |
1341 | ||
1342 | static int ehea_reg_interrupts(struct net_device *dev) | |
1343 | { | |
1344 | struct ehea_port *port = netdev_priv(dev); | |
1345 | struct ehea_port_res *pr; | |
1346 | int i, ret; | |
1347 | ||
7a291083 JBT |
1348 | |
1349 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
1350 | dev->name); | |
1351 | ||
6b08f3ae | 1352 | ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
7a291083 | 1353 | ehea_qp_aff_irq_handler, |
38515e90 | 1354 | IRQF_DISABLED, port->int_aff_name, port); |
7a291083 | 1355 | if (ret) { |
8c4877a4 JP |
1356 | netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n", |
1357 | port->qp_eq->attr.ist1); | |
7a291083 JBT |
1358 | goto out_free_qpeq; |
1359 | } | |
1360 | ||
8c4877a4 JP |
1361 | netif_info(port, ifup, dev, |
1362 | "irq_handle 0x%X for function qp_aff_irq_handler registered\n", | |
1363 | port->qp_eq->attr.ist1); | |
7a291083 | 1364 | |
18604c54 | 1365 | |
7a291083 JBT |
1366 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1367 | pr = &port->port_res[i]; | |
1368 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 | 1369 | "%s-queue%d", dev->name, i); |
6b08f3ae | 1370 | ret = ibmebus_request_irq(pr->eq->attr.ist1, |
18604c54 | 1371 | ehea_recv_irq_handler, |
38515e90 | 1372 | IRQF_DISABLED, pr->int_send_name, |
7a291083 JBT |
1373 | pr); |
1374 | if (ret) { | |
8c4877a4 JP |
1375 | netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n", |
1376 | i, pr->eq->attr.ist1); | |
7a291083 JBT |
1377 | goto out_free_req; |
1378 | } | |
8c4877a4 JP |
1379 | netif_info(port, ifup, dev, |
1380 | "irq_handle 0x%X for function ehea_queue_int %d registered\n", | |
1381 | pr->eq->attr.ist1, i); | |
7a291083 JBT |
1382 | } |
1383 | out: | |
1384 | return ret; | |
1385 | ||
18604c54 | 1386 | |
7a291083 JBT |
1387 | out_free_req: |
1388 | while (--i >= 0) { | |
18604c54 | 1389 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1390 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1391 | } |
18604c54 | 1392 | |
7a291083 | 1393 | out_free_qpeq: |
6b08f3ae | 1394 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1395 | i = port->num_def_qps; |
18604c54 | 1396 | |
7a291083 | 1397 | goto out; |
18604c54 | 1398 | |
7a291083 JBT |
1399 | } |
1400 | ||
1401 | static void ehea_free_interrupts(struct net_device *dev) | |
1402 | { | |
1403 | struct ehea_port *port = netdev_priv(dev); | |
1404 | struct ehea_port_res *pr; | |
1405 | int i; | |
1406 | ||
1407 | /* send */ | |
18604c54 | 1408 | |
7a291083 JBT |
1409 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1410 | pr = &port->port_res[i]; | |
6b08f3ae | 1411 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
8c4877a4 JP |
1412 | netif_info(port, intr, dev, |
1413 | "free send irq for res %d with handle 0x%X\n", | |
1414 | i, pr->eq->attr.ist1); | |
7a291083 JBT |
1415 | } |
1416 | ||
1417 | /* associated events */ | |
6b08f3ae | 1418 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
8c4877a4 JP |
1419 | netif_info(port, intr, dev, |
1420 | "associated event interrupt for handle 0x%X freed\n", | |
1421 | port->qp_eq->attr.ist1); | |
7a291083 JBT |
1422 | } |
1423 | ||
1424 | static int ehea_configure_port(struct ehea_port *port) | |
1425 | { | |
1426 | int ret, i; | |
1427 | u64 hret, mask; | |
1428 | struct hcp_ehea_port_cb0 *cb0; | |
1429 | ||
1430 | ret = -ENOMEM; | |
3faf2693 | 1431 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
1432 | if (!cb0) |
1433 | goto out; | |
1434 | ||
1435 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1436 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1437 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1438 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1439 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1440 | PXLY_RC_VLAN_FILTER) | |
1441 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1442 | ||
18604c54 JBT |
1443 | for (i = 0; i < port->num_mcs; i++) |
1444 | if (use_mcs) | |
1445 | cb0->default_qpn_arr[i] = | |
1446 | port->port_res[i].qp->init_attr.qp_nr; | |
1447 | else | |
1448 | cb0->default_qpn_arr[i] = | |
1449 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1450 | |
7a291083 JBT |
1451 | if (netif_msg_ifup(port)) |
1452 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1453 | ||
1454 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1455 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1456 | ||
1457 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1458 | port->logical_port_id, | |
1459 | H_PORT_CB0, mask, cb0); | |
1460 | ret = -EIO; | |
1461 | if (hret != H_SUCCESS) | |
1462 | goto out_free; | |
1463 | ||
1464 | ret = 0; | |
1465 | ||
1466 | out_free: | |
3faf2693 | 1467 | free_page((unsigned long)cb0); |
7a291083 JBT |
1468 | out: |
1469 | return ret; | |
1470 | } | |
1471 | ||
e542aa6b | 1472 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1473 | { |
e542aa6b | 1474 | int ret; |
7a291083 JBT |
1475 | struct ehea_adapter *adapter = pr->port->adapter; |
1476 | ||
e542aa6b JBT |
1477 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1478 | if (ret) | |
7a291083 JBT |
1479 | goto out; |
1480 | ||
e542aa6b JBT |
1481 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1482 | if (ret) | |
1483 | goto out_free; | |
7a291083 JBT |
1484 | |
1485 | return 0; | |
1486 | ||
e542aa6b JBT |
1487 | out_free: |
1488 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1489 | out: |
8c4877a4 | 1490 | pr_err("Generating SMRS failed\n"); |
7a291083 JBT |
1491 | return -EIO; |
1492 | } | |
1493 | ||
e542aa6b | 1494 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1495 | { |
8e95a202 JP |
1496 | if ((ehea_rem_mr(&pr->send_mr)) || |
1497 | (ehea_rem_mr(&pr->recv_mr))) | |
e542aa6b JBT |
1498 | return -EIO; |
1499 | else | |
1500 | return 0; | |
7a291083 JBT |
1501 | } |
1502 | ||
1503 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1504 | { | |
508d2b5d | 1505 | int arr_size = sizeof(void *) * max_q_entries; |
7a291083 | 1506 | |
89bf67f1 | 1507 | q_skba->arr = vzalloc(arr_size); |
7a291083 JBT |
1508 | if (!q_skba->arr) |
1509 | return -ENOMEM; | |
1510 | ||
7a291083 JBT |
1511 | q_skba->len = max_q_entries; |
1512 | q_skba->index = 0; | |
1513 | q_skba->os_skbs = 0; | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
1518 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1519 | struct port_res_cfg *pr_cfg, int queue_token) | |
1520 | { | |
1521 | struct ehea_adapter *adapter = port->adapter; | |
1522 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1523 | struct ehea_qp_init_attr *init_attr = NULL; | |
1524 | int ret = -EIO; | |
ce45b873 BL |
1525 | u64 tx_bytes, rx_bytes, tx_packets, rx_packets; |
1526 | ||
1527 | tx_bytes = pr->tx_bytes; | |
1528 | tx_packets = pr->tx_packets; | |
1529 | rx_bytes = pr->rx_bytes; | |
1530 | rx_packets = pr->rx_packets; | |
7a291083 JBT |
1531 | |
1532 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1533 | ||
ce45b873 BL |
1534 | pr->tx_bytes = rx_bytes; |
1535 | pr->tx_packets = tx_packets; | |
1536 | pr->rx_bytes = rx_bytes; | |
1537 | pr->rx_packets = rx_packets; | |
1538 | ||
7a291083 | 1539 | pr->port = port; |
7a291083 JBT |
1540 | spin_lock_init(&pr->xmit_lock); |
1541 | spin_lock_init(&pr->netif_queue); | |
1542 | ||
18604c54 JBT |
1543 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1544 | if (!pr->eq) { | |
8c4877a4 | 1545 | pr_err("create_eq failed (eq)\n"); |
7a291083 JBT |
1546 | goto out_free; |
1547 | } | |
1548 | ||
1549 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1550 | pr->eq->fw_handle, |
7a291083 JBT |
1551 | port->logical_port_id); |
1552 | if (!pr->recv_cq) { | |
8c4877a4 | 1553 | pr_err("create_cq failed (cq_recv)\n"); |
7a291083 JBT |
1554 | goto out_free; |
1555 | } | |
1556 | ||
1557 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1558 | pr->eq->fw_handle, |
7a291083 JBT |
1559 | port->logical_port_id); |
1560 | if (!pr->send_cq) { | |
8c4877a4 | 1561 | pr_err("create_cq failed (cq_send)\n"); |
7a291083 JBT |
1562 | goto out_free; |
1563 | } | |
1564 | ||
1565 | if (netif_msg_ifup(port)) | |
8c4877a4 JP |
1566 | pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n", |
1567 | pr->send_cq->attr.act_nr_of_cqes, | |
1568 | pr->recv_cq->attr.act_nr_of_cqes); | |
7a291083 JBT |
1569 | |
1570 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1571 | if (!init_attr) { | |
1572 | ret = -ENOMEM; | |
8c4877a4 | 1573 | pr_err("no mem for ehea_qp_init_attr\n"); |
7a291083 JBT |
1574 | goto out_free; |
1575 | } | |
1576 | ||
1577 | init_attr->low_lat_rq1 = 1; | |
1578 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1579 | init_attr->rq_count = 3; | |
1580 | init_attr->qp_token = queue_token; | |
1581 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1582 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1583 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1584 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1585 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1586 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1587 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1588 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1589 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1590 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1591 | init_attr->port_nr = port->logical_port_id; | |
1592 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1593 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1594 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1595 | ||
1596 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1597 | if (!pr->qp) { | |
8c4877a4 | 1598 | pr_err("create_qp failed\n"); |
7a291083 JBT |
1599 | ret = -EIO; |
1600 | goto out_free; | |
1601 | } | |
1602 | ||
1603 | if (netif_msg_ifup(port)) | |
8c4877a4 JP |
1604 | pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n", |
1605 | init_attr->qp_nr, | |
1606 | init_attr->act_nr_send_wqes, | |
1607 | init_attr->act_nr_rwqes_rq1, | |
1608 | init_attr->act_nr_rwqes_rq2, | |
1609 | init_attr->act_nr_rwqes_rq3); | |
7a291083 | 1610 | |
44fb3126 TK |
1611 | pr->sq_skba_size = init_attr->act_nr_send_wqes + 1; |
1612 | ||
1613 | ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size); | |
7a291083 JBT |
1614 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); |
1615 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1616 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1617 | if (ret) | |
1618 | goto out_free; | |
1619 | ||
1620 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1621 | if (ehea_gen_smrs(pr) != 0) { | |
1622 | ret = -EIO; | |
1623 | goto out_free; | |
1624 | } | |
18604c54 | 1625 | |
7a291083 JBT |
1626 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1627 | ||
1628 | kfree(init_attr); | |
18604c54 | 1629 | |
bea3348e | 1630 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1631 | |
d4dc4ec9 JBT |
1632 | pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
1633 | pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; | |
1634 | pr->lro_mgr.lro_arr = pr->lro_desc; | |
1635 | pr->lro_mgr.get_skb_header = get_skb_hdr; | |
1636 | pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; | |
1637 | pr->lro_mgr.dev = port->netdev; | |
1638 | pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1639 | pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1640 | ||
7a291083 JBT |
1641 | ret = 0; |
1642 | goto out; | |
1643 | ||
1644 | out_free: | |
1645 | kfree(init_attr); | |
1646 | vfree(pr->sq_skba.arr); | |
1647 | vfree(pr->rq1_skba.arr); | |
1648 | vfree(pr->rq2_skba.arr); | |
1649 | vfree(pr->rq3_skba.arr); | |
1650 | ehea_destroy_qp(pr->qp); | |
1651 | ehea_destroy_cq(pr->send_cq); | |
1652 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1653 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1654 | out: |
1655 | return ret; | |
1656 | } | |
1657 | ||
1658 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1659 | { | |
1660 | int ret, i; | |
1661 | ||
357eb46d HH |
1662 | if (pr->qp) |
1663 | netif_napi_del(&pr->napi); | |
1664 | ||
7a291083 JBT |
1665 | ret = ehea_destroy_qp(pr->qp); |
1666 | ||
1667 | if (!ret) { | |
1668 | ehea_destroy_cq(pr->send_cq); | |
1669 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1670 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1671 | |
1672 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1673 | if (pr->rq1_skba.arr[i]) | |
1674 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1675 | ||
1676 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1677 | if (pr->rq2_skba.arr[i]) | |
1678 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1679 | ||
1680 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1681 | if (pr->rq3_skba.arr[i]) | |
1682 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1683 | ||
1684 | for (i = 0; i < pr->sq_skba.len; i++) | |
1685 | if (pr->sq_skba.arr[i]) | |
1686 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1687 | ||
1688 | vfree(pr->rq1_skba.arr); | |
1689 | vfree(pr->rq2_skba.arr); | |
1690 | vfree(pr->rq3_skba.arr); | |
1691 | vfree(pr->sq_skba.arr); | |
1692 | ret = ehea_rem_smrs(pr); | |
1693 | } | |
1694 | return ret; | |
1695 | } | |
1696 | ||
1697 | /* | |
1698 | * The write_* functions store information in swqe which is used by | |
1699 | * the hardware to calculate the ip/tcp/udp checksum | |
1700 | */ | |
1701 | ||
1702 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1703 | const struct sk_buff *skb) | |
1704 | { | |
eddc9ec5 | 1705 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1706 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1707 | } |
1708 | ||
1709 | static inline void write_tcp_offset_end(struct ehea_swqe *swqe, | |
1710 | const struct sk_buff *skb) | |
1711 | { | |
1712 | swqe->tcp_offset = | |
1713 | (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); | |
1714 | ||
1715 | swqe->tcp_end = (u16)skb->len - 1; | |
1716 | } | |
1717 | ||
1718 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1719 | const struct sk_buff *skb) | |
1720 | { | |
1721 | swqe->tcp_offset = | |
1722 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1723 | ||
1724 | swqe->tcp_end = (u16)skb->len - 1; | |
1725 | } | |
1726 | ||
1727 | ||
1728 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1729 | struct ehea_swqe *swqe, u32 lkey) | |
1730 | { | |
1731 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1732 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
e743d313 | 1733 | int skb_data_size = skb_headlen(skb); |
7a291083 | 1734 | int headersize; |
7a291083 JBT |
1735 | |
1736 | /* Packet is TCP with TSO enabled */ | |
1737 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1738 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1739 | /* copy only eth/ip/tcp headers to immediate data and | |
1740 | * the rest of skb->data to sg1entry | |
1741 | */ | |
ab6a5bb6 | 1742 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 | 1743 | |
e743d313 | 1744 | skb_data_size = skb_headlen(skb); |
7a291083 JBT |
1745 | |
1746 | if (skb_data_size >= headersize) { | |
1747 | /* copy immediate data */ | |
d626f62b | 1748 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1749 | swqe->immediate_data_length = headersize; |
1750 | ||
1751 | if (skb_data_size > headersize) { | |
1752 | /* set sg1entry data */ | |
1753 | sg1entry->l_key = lkey; | |
1754 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1755 | sg1entry->vaddr = |
1756 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1757 | swqe->descriptors++; |
1758 | } | |
1759 | } else | |
8c4877a4 | 1760 | pr_err("cannot handle fragmented headers\n"); |
7a291083 JBT |
1761 | } |
1762 | ||
1763 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1764 | struct ehea_swqe *swqe, u32 lkey) | |
1765 | { | |
e743d313 | 1766 | int skb_data_size = skb_headlen(skb); |
7a291083 JBT |
1767 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; |
1768 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1769 | |
1770 | /* Packet is any nonTSO type | |
1771 | * | |
1772 | * Copy as much as possible skb->data to immediate data and | |
1773 | * the rest to sg1entry | |
1774 | */ | |
1775 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1776 | /* copy immediate data */ | |
d626f62b | 1777 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1778 | |
1779 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1780 | ||
1781 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1782 | /* copy sg1entry data */ | |
1783 | sg1entry->l_key = lkey; | |
1784 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1785 | sg1entry->vaddr = |
1786 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1787 | swqe->descriptors++; |
1788 | } | |
1789 | } else { | |
d626f62b | 1790 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1791 | swqe->immediate_data_length = skb_data_size; |
1792 | } | |
1793 | } | |
1794 | ||
1795 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1796 | struct ehea_swqe *swqe, u32 lkey) | |
1797 | { | |
1798 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1799 | skb_frag_t *frag; | |
1800 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1801 | |
1802 | nfrags = skb_shinfo(skb)->nr_frags; | |
1803 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
508d2b5d | 1804 | sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; |
7a291083 JBT |
1805 | swqe->descriptors = 0; |
1806 | sg1entry_contains_frag_data = 0; | |
1807 | ||
1808 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1809 | write_swqe2_TSO(skb, swqe, lkey); | |
1810 | else | |
1811 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1812 | ||
1813 | /* write descriptors */ | |
1814 | if (nfrags > 0) { | |
1815 | if (swqe->descriptors == 0) { | |
1816 | /* sg1entry not yet used */ | |
1817 | frag = &skb_shinfo(skb)->frags[0]; | |
1818 | ||
1819 | /* copy sg1entry data */ | |
1820 | sg1entry->l_key = lkey; | |
1821 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1822 | sg1entry->vaddr = |
1823 | ehea_map_vaddr(page_address(frag->page) | |
1824 | + frag->page_offset); | |
7a291083 JBT |
1825 | swqe->descriptors++; |
1826 | sg1entry_contains_frag_data = 1; | |
1827 | } | |
1828 | ||
1829 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1830 | ||
1831 | frag = &skb_shinfo(skb)->frags[i]; | |
1832 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1833 | ||
1834 | sgentry->l_key = lkey; | |
1835 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1836 | sgentry->vaddr = |
1837 | ehea_map_vaddr(page_address(frag->page) | |
1838 | + frag->page_offset); | |
7a291083 JBT |
1839 | swqe->descriptors++; |
1840 | } | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1845 | { | |
1846 | int ret = 0; | |
1847 | u64 hret; | |
1848 | u8 reg_type; | |
1849 | ||
1850 | /* De/Register untagged packets */ | |
1851 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1852 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1853 | port->logical_port_id, | |
1854 | reg_type, port->mac_addr, 0, hcallid); | |
1855 | if (hret != H_SUCCESS) { | |
8c4877a4 JP |
1856 | pr_err("%sregistering bc address failed (tagged)\n", |
1857 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1858 | ret = -EIO; |
1859 | goto out_herr; | |
1860 | } | |
1861 | ||
1862 | /* De/Register VLAN packets */ | |
1863 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1864 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1865 | port->logical_port_id, | |
1866 | reg_type, port->mac_addr, 0, hcallid); | |
1867 | if (hret != H_SUCCESS) { | |
8c4877a4 JP |
1868 | pr_err("%sregistering bc address failed (vlan)\n", |
1869 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1870 | ret = -EIO; |
1871 | } | |
1872 | out_herr: | |
1873 | return ret; | |
1874 | } | |
1875 | ||
1876 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1877 | { | |
1878 | struct ehea_port *port = netdev_priv(dev); | |
1879 | struct sockaddr *mac_addr = sa; | |
1880 | struct hcp_ehea_port_cb0 *cb0; | |
1881 | int ret; | |
1882 | u64 hret; | |
1883 | ||
1884 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1885 | ret = -EADDRNOTAVAIL; | |
1886 | goto out; | |
1887 | } | |
1888 | ||
3faf2693 | 1889 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1890 | if (!cb0) { |
8c4877a4 | 1891 | pr_err("no mem for cb0\n"); |
7a291083 JBT |
1892 | ret = -ENOMEM; |
1893 | goto out; | |
1894 | } | |
1895 | ||
1896 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1897 | ||
1898 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1899 | ||
1900 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1901 | port->logical_port_id, H_PORT_CB0, | |
1902 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1903 | if (hret != H_SUCCESS) { | |
1904 | ret = -EIO; | |
1905 | goto out_free; | |
1906 | } | |
1907 | ||
1908 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1909 | ||
1910 | /* Deregister old MAC in pHYP */ | |
00aaea2f JBT |
1911 | if (port->state == EHEA_PORT_UP) { |
1912 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1913 | if (ret) | |
1914 | goto out_upregs; | |
1915 | } | |
7a291083 JBT |
1916 | |
1917 | port->mac_addr = cb0->port_mac_addr << 16; | |
1918 | ||
1919 | /* Register new MAC in pHYP */ | |
00aaea2f JBT |
1920 | if (port->state == EHEA_PORT_UP) { |
1921 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1922 | if (ret) | |
1923 | goto out_upregs; | |
1924 | } | |
7a291083 JBT |
1925 | |
1926 | ret = 0; | |
21eee2dd TK |
1927 | |
1928 | out_upregs: | |
1929 | ehea_update_bcmc_registrations(); | |
7a291083 | 1930 | out_free: |
3faf2693 | 1931 | free_page((unsigned long)cb0); |
7a291083 JBT |
1932 | out: |
1933 | return ret; | |
1934 | } | |
1935 | ||
1936 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1937 | { | |
7674a588 | 1938 | if (hret == H_AUTHORITY) |
8c4877a4 JP |
1939 | pr_info("Hypervisor denied %sabling promiscuous mode\n", |
1940 | enable == 1 ? "en" : "dis"); | |
7674a588 | 1941 | else |
8c4877a4 JP |
1942 | pr_err("failed %sabling promiscuous mode\n", |
1943 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1944 | } |
1945 | ||
1946 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1947 | { | |
1948 | struct ehea_port *port = netdev_priv(dev); | |
1949 | struct hcp_ehea_port_cb7 *cb7; | |
1950 | u64 hret; | |
1951 | ||
aa3bc6c6 | 1952 | if (enable == port->promisc) |
7a291083 JBT |
1953 | return; |
1954 | ||
3faf2693 | 1955 | cb7 = (void *)get_zeroed_page(GFP_ATOMIC); |
7a291083 | 1956 | if (!cb7) { |
8c4877a4 | 1957 | pr_err("no mem for cb7\n"); |
7a291083 JBT |
1958 | goto out; |
1959 | } | |
1960 | ||
1961 | /* Modify Pxs_DUCQPN in CB7 */ | |
1962 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1963 | ||
1964 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1965 | port->logical_port_id, | |
1966 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1967 | if (hret) { | |
1968 | ehea_promiscuous_error(hret, enable); | |
1969 | goto out; | |
1970 | } | |
1971 | ||
1972 | port->promisc = enable; | |
1973 | out: | |
3faf2693 | 1974 | free_page((unsigned long)cb7); |
7a291083 JBT |
1975 | } |
1976 | ||
1977 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1978 | u32 hcallid) | |
1979 | { | |
1980 | u64 hret; | |
1981 | u8 reg_type; | |
1982 | ||
1983 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1984 | | EHEA_BCMC_UNTAGGED; | |
1985 | ||
1986 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1987 | port->logical_port_id, | |
1988 | reg_type, mc_mac_addr, 0, hcallid); | |
1989 | if (hret) | |
1990 | goto out; | |
1991 | ||
1992 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1993 | | EHEA_BCMC_VLANID_ALL; | |
1994 | ||
1995 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1996 | port->logical_port_id, | |
1997 | reg_type, mc_mac_addr, 0, hcallid); | |
1998 | out: | |
1999 | return hret; | |
2000 | } | |
2001 | ||
2002 | static int ehea_drop_multicast_list(struct net_device *dev) | |
2003 | { | |
2004 | struct ehea_port *port = netdev_priv(dev); | |
2005 | struct ehea_mc_list *mc_entry = port->mc_list; | |
2006 | struct list_head *pos; | |
2007 | struct list_head *temp; | |
2008 | int ret = 0; | |
2009 | u64 hret; | |
2010 | ||
2011 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
2012 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
2013 | ||
2014 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
2015 | H_DEREG_BCMC); | |
2016 | if (hret) { | |
8c4877a4 | 2017 | pr_err("failed deregistering mcast MAC\n"); |
7a291083 JBT |
2018 | ret = -EIO; |
2019 | } | |
2020 | ||
2021 | list_del(pos); | |
2022 | kfree(mc_entry); | |
2023 | } | |
2024 | return ret; | |
2025 | } | |
2026 | ||
2027 | static void ehea_allmulti(struct net_device *dev, int enable) | |
2028 | { | |
2029 | struct ehea_port *port = netdev_priv(dev); | |
2030 | u64 hret; | |
2031 | ||
2032 | if (!port->allmulti) { | |
2033 | if (enable) { | |
2034 | /* Enable ALLMULTI */ | |
2035 | ehea_drop_multicast_list(dev); | |
2036 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
2037 | if (!hret) | |
2038 | port->allmulti = 1; | |
2039 | else | |
8c4877a4 JP |
2040 | netdev_err(dev, |
2041 | "failed enabling IFF_ALLMULTI\n"); | |
7a291083 JBT |
2042 | } |
2043 | } else | |
2044 | if (!enable) { | |
2045 | /* Disable ALLMULTI */ | |
2046 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
2047 | if (!hret) | |
2048 | port->allmulti = 0; | |
2049 | else | |
8c4877a4 JP |
2050 | netdev_err(dev, |
2051 | "failed disabling IFF_ALLMULTI\n"); | |
7a291083 JBT |
2052 | } |
2053 | } | |
2054 | ||
508d2b5d | 2055 | static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) |
7a291083 JBT |
2056 | { |
2057 | struct ehea_mc_list *ehea_mcl_entry; | |
2058 | u64 hret; | |
2059 | ||
1e1675cc | 2060 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 | 2061 | if (!ehea_mcl_entry) { |
8c4877a4 | 2062 | pr_err("no mem for mcl_entry\n"); |
7a291083 JBT |
2063 | return; |
2064 | } | |
2065 | ||
2066 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
2067 | ||
2068 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
2069 | ||
2070 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
2071 | H_REG_BCMC); | |
2072 | if (!hret) | |
2073 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
2074 | else { | |
8c4877a4 | 2075 | pr_err("failed registering mcast MAC\n"); |
7a291083 JBT |
2076 | kfree(ehea_mcl_entry); |
2077 | } | |
2078 | } | |
2079 | ||
2080 | static void ehea_set_multicast_list(struct net_device *dev) | |
2081 | { | |
2082 | struct ehea_port *port = netdev_priv(dev); | |
22bedad3 | 2083 | struct netdev_hw_addr *ha; |
48e2f183 | 2084 | int ret; |
7a291083 JBT |
2085 | |
2086 | if (dev->flags & IFF_PROMISC) { | |
2087 | ehea_promiscuous(dev, 1); | |
2088 | return; | |
2089 | } | |
2090 | ehea_promiscuous(dev, 0); | |
2091 | ||
2092 | if (dev->flags & IFF_ALLMULTI) { | |
2093 | ehea_allmulti(dev, 1); | |
21eee2dd | 2094 | goto out; |
7a291083 JBT |
2095 | } |
2096 | ehea_allmulti(dev, 0); | |
2097 | ||
4cd24eaf | 2098 | if (!netdev_mc_empty(dev)) { |
7a291083 JBT |
2099 | ret = ehea_drop_multicast_list(dev); |
2100 | if (ret) { | |
2101 | /* Dropping the current multicast list failed. | |
2102 | * Enabling ALL_MULTI is the best we can do. | |
2103 | */ | |
2104 | ehea_allmulti(dev, 1); | |
2105 | } | |
2106 | ||
4cd24eaf | 2107 | if (netdev_mc_count(dev) > port->adapter->max_mc_mac) { |
8c4877a4 JP |
2108 | pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n", |
2109 | port->adapter->max_mc_mac); | |
7a291083 JBT |
2110 | goto out; |
2111 | } | |
2112 | ||
22bedad3 JP |
2113 | netdev_for_each_mc_addr(ha, dev) |
2114 | ehea_add_multicast_entry(port, ha->addr); | |
508d2b5d | 2115 | |
7a291083 JBT |
2116 | } |
2117 | out: | |
21eee2dd | 2118 | ehea_update_bcmc_registrations(); |
7a291083 JBT |
2119 | } |
2120 | ||
2121 | static int ehea_change_mtu(struct net_device *dev, int new_mtu) | |
2122 | { | |
2123 | if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) | |
2124 | return -EINVAL; | |
2125 | dev->mtu = new_mtu; | |
2126 | return 0; | |
2127 | } | |
2128 | ||
2129 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
2130 | struct ehea_swqe *swqe, u32 lkey) | |
2131 | { | |
2132 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 2133 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 2134 | |
7a291083 JBT |
2135 | /* IPv4 */ |
2136 | swqe->tx_control |= EHEA_SWQE_CRC | |
2137 | | EHEA_SWQE_IP_CHECKSUM | |
2138 | | EHEA_SWQE_TCP_CHECKSUM | |
2139 | | EHEA_SWQE_IMM_DATA_PRESENT | |
2140 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
2141 | ||
2142 | write_ip_start_end(swqe, skb); | |
2143 | ||
eddc9ec5 | 2144 | if (iph->protocol == IPPROTO_UDP) { |
8e95a202 JP |
2145 | if ((iph->frag_off & IP_MF) || |
2146 | (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
2147 | /* IP fragment, so don't change cs */ |
2148 | swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; | |
2149 | else | |
2150 | write_udp_offset_end(swqe, skb); | |
eddc9ec5 | 2151 | } else if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
2152 | write_tcp_offset_end(swqe, skb); |
2153 | } | |
2154 | ||
2155 | /* icmp (big data) and ip segmentation packets (all other ip | |
2156 | packets) do not require any special handling */ | |
2157 | ||
2158 | } else { | |
2159 | /* Other Ethernet Protocol */ | |
2160 | swqe->tx_control |= EHEA_SWQE_CRC | |
2161 | | EHEA_SWQE_IMM_DATA_PRESENT | |
2162 | | EHEA_SWQE_DESCRIPTORS_PRESENT; | |
2163 | } | |
2164 | ||
2165 | write_swqe2_data(skb, dev, swqe, lkey); | |
2166 | } | |
2167 | ||
2168 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
2169 | struct ehea_swqe *swqe) | |
2170 | { | |
2171 | int nfrags = skb_shinfo(skb)->nr_frags; | |
2172 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; | |
2173 | skb_frag_t *frag; | |
2174 | int i; | |
2175 | ||
2176 | if (skb->protocol == htons(ETH_P_IP)) { | |
eddc9ec5 | 2177 | const struct iphdr *iph = ip_hdr(skb); |
d1d25aab | 2178 | |
7a291083 JBT |
2179 | /* IPv4 */ |
2180 | write_ip_start_end(swqe, skb); | |
2181 | ||
eddc9ec5 | 2182 | if (iph->protocol == IPPROTO_TCP) { |
7a291083 JBT |
2183 | swqe->tx_control |= EHEA_SWQE_CRC |
2184 | | EHEA_SWQE_IP_CHECKSUM | |
2185 | | EHEA_SWQE_TCP_CHECKSUM | |
2186 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
2187 | ||
2188 | write_tcp_offset_end(swqe, skb); | |
2189 | ||
eddc9ec5 | 2190 | } else if (iph->protocol == IPPROTO_UDP) { |
8e95a202 JP |
2191 | if ((iph->frag_off & IP_MF) || |
2192 | (iph->frag_off & IP_OFFSET)) | |
7a291083 JBT |
2193 | /* IP fragment, so don't change cs */ |
2194 | swqe->tx_control |= EHEA_SWQE_CRC | |
2195 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
2196 | else { | |
2197 | swqe->tx_control |= EHEA_SWQE_CRC | |
2198 | | EHEA_SWQE_IP_CHECKSUM | |
2199 | | EHEA_SWQE_TCP_CHECKSUM | |
2200 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
2201 | ||
2202 | write_udp_offset_end(swqe, skb); | |
2203 | } | |
2204 | } else { | |
2205 | /* icmp (big data) and | |
2206 | ip segmentation packets (all other ip packets) */ | |
2207 | swqe->tx_control |= EHEA_SWQE_CRC | |
2208 | | EHEA_SWQE_IP_CHECKSUM | |
2209 | | EHEA_SWQE_IMM_DATA_PRESENT; | |
2210 | } | |
2211 | } else { | |
2212 | /* Other Ethernet Protocol */ | |
2213 | swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; | |
2214 | } | |
2215 | /* copy (immediate) data */ | |
2216 | if (nfrags == 0) { | |
2217 | /* data is in a single piece */ | |
d626f62b | 2218 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
7a291083 JBT |
2219 | } else { |
2220 | /* first copy data from the skb->data buffer ... */ | |
d626f62b | 2221 | skb_copy_from_linear_data(skb, imm_data, |
e743d313 ED |
2222 | skb_headlen(skb)); |
2223 | imm_data += skb_headlen(skb); | |
7a291083 JBT |
2224 | |
2225 | /* ... then copy data from the fragments */ | |
2226 | for (i = 0; i < nfrags; i++) { | |
2227 | frag = &skb_shinfo(skb)->frags[i]; | |
2228 | memcpy(imm_data, | |
2229 | page_address(frag->page) + frag->page_offset, | |
2230 | frag->size); | |
2231 | imm_data += frag->size; | |
2232 | } | |
2233 | } | |
2234 | swqe->immediate_data_length = skb->len; | |
2235 | dev_kfree_skb(skb); | |
2236 | } | |
2237 | ||
18604c54 JBT |
2238 | static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
2239 | { | |
2240 | struct tcphdr *tcp; | |
2241 | u32 tmp; | |
2242 | ||
2243 | if ((skb->protocol == htons(ETH_P_IP)) && | |
88ca2d07 | 2244 | (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
508d2b5d DM |
2245 | tcp = (struct tcphdr *)(skb_network_header(skb) + |
2246 | (ip_hdr(skb)->ihl * 4)); | |
18604c54 | 2247 | tmp = (tcp->source + (tcp->dest << 16)) % 31; |
88ca2d07 | 2248 | tmp += ip_hdr(skb)->daddr % 31; |
18604c54 | 2249 | return tmp % num_qps; |
508d2b5d | 2250 | } else |
18604c54 JBT |
2251 | return 0; |
2252 | } | |
2253 | ||
7a291083 JBT |
2254 | static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
2255 | { | |
2256 | struct ehea_port *port = netdev_priv(dev); | |
2257 | struct ehea_swqe *swqe; | |
2258 | unsigned long flags; | |
2259 | u32 lkey; | |
2260 | int swqe_index; | |
18604c54 JBT |
2261 | struct ehea_port_res *pr; |
2262 | ||
2263 | pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; | |
2264 | ||
18604c54 JBT |
2265 | if (!spin_trylock(&pr->xmit_lock)) |
2266 | return NETDEV_TX_BUSY; | |
2267 | ||
2268 | if (pr->queue_stopped) { | |
2269 | spin_unlock(&pr->xmit_lock); | |
2270 | return NETDEV_TX_BUSY; | |
2271 | } | |
7a291083 JBT |
2272 | |
2273 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
2274 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
2275 | atomic_dec(&pr->swqe_avail); | |
2276 | ||
e5ccd961 ED |
2277 | if (vlan_tx_tag_present(skb)) { |
2278 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; | |
2279 | swqe->vlan_tag = vlan_tx_tag_get(skb); | |
2280 | } | |
2281 | ||
ce45b873 BL |
2282 | pr->tx_packets++; |
2283 | pr->tx_bytes += skb->len; | |
2284 | ||
7a291083 JBT |
2285 | if (skb->len <= SWQE3_MAX_IMM) { |
2286 | u32 sig_iv = port->sig_comp_iv; | |
2287 | u32 swqe_num = pr->swqe_id_counter; | |
2288 | ehea_xmit3(skb, dev, swqe); | |
2289 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
2290 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
2291 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
2292 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
2293 | sig_iv); | |
2294 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
2295 | pr->swqe_ll_count = 0; | |
2296 | } else | |
2297 | pr->swqe_ll_count += 1; | |
2298 | } else { | |
2299 | swqe->wr_id = | |
2300 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
2301 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 2302 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
2303 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
2304 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
2305 | ||
2306 | pr->sq_skba.index++; | |
2307 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
2308 | ||
2309 | lkey = pr->send_mr.lkey; | |
2310 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 2311 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
2312 | } |
2313 | pr->swqe_id_counter += 1; | |
2314 | ||
8c4877a4 JP |
2315 | netif_info(port, tx_queued, dev, |
2316 | "post swqe on QP %d\n", pr->qp->init_attr.qp_nr); | |
2317 | if (netif_msg_tx_queued(port)) | |
bff0a55f | 2318 | ehea_dump(swqe, 512, "swqe"); |
7a291083 | 2319 | |
2c69448b JBT |
2320 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
2321 | netif_stop_queue(dev); | |
2322 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2323 | } | |
44c82152 | 2324 | |
7a291083 | 2325 | ehea_post_swqe(pr->qp, swqe); |
7a291083 JBT |
2326 | |
2327 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
2328 | spin_lock_irqsave(&pr->netif_queue, flags); | |
2329 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
acbddb59 | 2330 | pr->p_stats.queue_stopped++; |
7a291083 JBT |
2331 | netif_stop_queue(dev); |
2332 | pr->queue_stopped = 1; | |
2333 | } | |
2334 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
2335 | } | |
1ae5dc34 | 2336 | dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */ |
7a291083 | 2337 | spin_unlock(&pr->xmit_lock); |
2c69448b | 2338 | |
7a291083 JBT |
2339 | return NETDEV_TX_OK; |
2340 | } | |
2341 | ||
2342 | static void ehea_vlan_rx_register(struct net_device *dev, | |
2343 | struct vlan_group *grp) | |
2344 | { | |
2345 | struct ehea_port *port = netdev_priv(dev); | |
2346 | struct ehea_adapter *adapter = port->adapter; | |
2347 | struct hcp_ehea_port_cb1 *cb1; | |
2348 | u64 hret; | |
2349 | ||
2350 | port->vgrp = grp; | |
2351 | ||
3faf2693 | 2352 | cb1 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2353 | if (!cb1) { |
8c4877a4 | 2354 | pr_err("no mem for cb1\n"); |
7a291083 JBT |
2355 | goto out; |
2356 | } | |
2357 | ||
7a291083 JBT |
2358 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, |
2359 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2360 | if (hret != H_SUCCESS) | |
8c4877a4 | 2361 | pr_err("modify_ehea_port failed\n"); |
7a291083 | 2362 | |
3faf2693 | 2363 | free_page((unsigned long)cb1); |
7a291083 JBT |
2364 | out: |
2365 | return; | |
2366 | } | |
2367 | ||
2368 | static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
2369 | { | |
2370 | struct ehea_port *port = netdev_priv(dev); | |
2371 | struct ehea_adapter *adapter = port->adapter; | |
2372 | struct hcp_ehea_port_cb1 *cb1; | |
2373 | int index; | |
2374 | u64 hret; | |
2375 | ||
3faf2693 | 2376 | cb1 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2377 | if (!cb1) { |
8c4877a4 | 2378 | pr_err("no mem for cb1\n"); |
7a291083 JBT |
2379 | goto out; |
2380 | } | |
2381 | ||
2382 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2383 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2384 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2385 | pr_err("query_ehea_port failed\n"); |
7a291083 JBT |
2386 | goto out; |
2387 | } | |
2388 | ||
2389 | index = (vid / 64); | |
dec590c1 | 2390 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2391 | |
2392 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2393 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2394 | if (hret != H_SUCCESS) | |
8c4877a4 | 2395 | pr_err("modify_ehea_port failed\n"); |
7a291083 | 2396 | out: |
3faf2693 | 2397 | free_page((unsigned long)cb1); |
7a291083 JBT |
2398 | return; |
2399 | } | |
2400 | ||
2401 | static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
2402 | { | |
2403 | struct ehea_port *port = netdev_priv(dev); | |
2404 | struct ehea_adapter *adapter = port->adapter; | |
2405 | struct hcp_ehea_port_cb1 *cb1; | |
2406 | int index; | |
2407 | u64 hret; | |
2408 | ||
5c15bdec | 2409 | vlan_group_set_device(port->vgrp, vid, NULL); |
7a291083 | 2410 | |
3faf2693 | 2411 | cb1 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2412 | if (!cb1) { |
8c4877a4 | 2413 | pr_err("no mem for cb1\n"); |
7a291083 JBT |
2414 | goto out; |
2415 | } | |
2416 | ||
2417 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2418 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2419 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2420 | pr_err("query_ehea_port failed\n"); |
7a291083 JBT |
2421 | goto out; |
2422 | } | |
2423 | ||
2424 | index = (vid / 64); | |
dec590c1 | 2425 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2426 | |
2427 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2428 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2429 | if (hret != H_SUCCESS) | |
8c4877a4 | 2430 | pr_err("modify_ehea_port failed\n"); |
7a291083 | 2431 | out: |
3faf2693 | 2432 | free_page((unsigned long)cb1); |
7a291083 JBT |
2433 | } |
2434 | ||
2435 | int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) | |
2436 | { | |
2437 | int ret = -EIO; | |
2438 | u64 hret; | |
2439 | u16 dummy16 = 0; | |
2440 | u64 dummy64 = 0; | |
508d2b5d | 2441 | struct hcp_modify_qp_cb0 *cb0; |
7a291083 | 2442 | |
3faf2693 | 2443 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
2444 | if (!cb0) { |
2445 | ret = -ENOMEM; | |
2446 | goto out; | |
2447 | } | |
2448 | ||
2449 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2450 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2451 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2452 | pr_err("query_ehea_qp failed (1)\n"); |
7a291083 JBT |
2453 | goto out; |
2454 | } | |
2455 | ||
2456 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2457 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2458 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2459 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2460 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2461 | pr_err("modify_ehea_qp failed (1)\n"); |
7a291083 JBT |
2462 | goto out; |
2463 | } | |
2464 | ||
2465 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2466 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2467 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2468 | pr_err("query_ehea_qp failed (2)\n"); |
7a291083 JBT |
2469 | goto out; |
2470 | } | |
2471 | ||
2472 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2473 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2474 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2475 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2476 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2477 | pr_err("modify_ehea_qp failed (2)\n"); |
7a291083 JBT |
2478 | goto out; |
2479 | } | |
2480 | ||
2481 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2482 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2483 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2484 | pr_err("query_ehea_qp failed (3)\n"); |
7a291083 JBT |
2485 | goto out; |
2486 | } | |
2487 | ||
2488 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2489 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2490 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2491 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2492 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2493 | pr_err("modify_ehea_qp failed (3)\n"); |
7a291083 JBT |
2494 | goto out; |
2495 | } | |
2496 | ||
2497 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2498 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2499 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2500 | pr_err("query_ehea_qp failed (4)\n"); |
7a291083 JBT |
2501 | goto out; |
2502 | } | |
2503 | ||
2504 | ret = 0; | |
2505 | out: | |
3faf2693 | 2506 | free_page((unsigned long)cb0); |
7a291083 JBT |
2507 | return ret; |
2508 | } | |
2509 | ||
2510 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps, | |
2511 | int add_tx_qps) | |
2512 | { | |
2513 | int ret, i; | |
2514 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2515 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2516 | ||
2517 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2518 | EHEA_MAX_ENTRIES_EQ, 1); | |
2519 | if (!port->qp_eq) { | |
2520 | ret = -EINVAL; | |
8c4877a4 | 2521 | pr_err("ehea_create_eq failed (qp_eq)\n"); |
7a291083 JBT |
2522 | goto out_kill_eq; |
2523 | } | |
2524 | ||
2525 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2526 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2527 | pr_cfg.max_entries_sq = sq_entries; |
2528 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2529 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2530 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2531 | ||
2532 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2533 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2534 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2535 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2536 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2537 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2538 | ||
2539 | for (i = 0; i < def_qps; i++) { | |
2540 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2541 | if (ret) | |
2542 | goto out_clean_pr; | |
2543 | } | |
2544 | for (i = def_qps; i < def_qps + add_tx_qps; i++) { | |
2545 | ret = ehea_init_port_res(port, &port->port_res[i], | |
2546 | &pr_cfg_small_rx, i); | |
2547 | if (ret) | |
2548 | goto out_clean_pr; | |
2549 | } | |
2550 | ||
2551 | return 0; | |
2552 | ||
2553 | out_clean_pr: | |
2554 | while (--i >= 0) | |
2555 | ehea_clean_portres(port, &port->port_res[i]); | |
2556 | ||
2557 | out_kill_eq: | |
2558 | ehea_destroy_eq(port->qp_eq); | |
2559 | return ret; | |
2560 | } | |
2561 | ||
2562 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2563 | { | |
2564 | int ret = 0; | |
2565 | int i; | |
2566 | ||
508d2b5d | 2567 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
7a291083 JBT |
2568 | ret |= ehea_clean_portres(port, &port->port_res[i]); |
2569 | ||
2570 | ret |= ehea_destroy_eq(port->qp_eq); | |
2571 | ||
2572 | return ret; | |
2573 | } | |
2574 | ||
35cf2e2e | 2575 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2576 | { |
35cf2e2e TK |
2577 | if (adapter->active_ports) |
2578 | return; | |
1211bb6d TK |
2579 | |
2580 | ehea_rem_mr(&adapter->mr); | |
2581 | } | |
2582 | ||
35cf2e2e | 2583 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2584 | { |
35cf2e2e TK |
2585 | if (adapter->active_ports) |
2586 | return 0; | |
1211bb6d TK |
2587 | |
2588 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2589 | } | |
2590 | ||
7a291083 JBT |
2591 | static int ehea_up(struct net_device *dev) |
2592 | { | |
2593 | int ret, i; | |
2594 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2595 | |
2596 | if (port->state == EHEA_PORT_UP) | |
2597 | return 0; | |
2598 | ||
2599 | ret = ehea_port_res_setup(port, port->num_def_qps, | |
2600 | port->num_add_tx_qps); | |
2601 | if (ret) { | |
8c4877a4 | 2602 | netdev_err(dev, "port_res_failed\n"); |
7a291083 JBT |
2603 | goto out; |
2604 | } | |
2605 | ||
2606 | /* Set default QP for this port */ | |
2607 | ret = ehea_configure_port(port); | |
2608 | if (ret) { | |
8c4877a4 | 2609 | netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret); |
7a291083 JBT |
2610 | goto out_clean_pr; |
2611 | } | |
2612 | ||
7a291083 JBT |
2613 | ret = ehea_reg_interrupts(dev); |
2614 | if (ret) { | |
8c4877a4 | 2615 | netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret); |
f9e29228 | 2616 | goto out_clean_pr; |
7a291083 JBT |
2617 | } |
2618 | ||
508d2b5d | 2619 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
7a291083 JBT |
2620 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); |
2621 | if (ret) { | |
8c4877a4 | 2622 | netdev_err(dev, "activate_qp failed\n"); |
7a291083 JBT |
2623 | goto out_free_irqs; |
2624 | } | |
2625 | } | |
2626 | ||
508d2b5d | 2627 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 JBT |
2628 | ret = ehea_fill_port_res(&port->port_res[i]); |
2629 | if (ret) { | |
8c4877a4 | 2630 | netdev_err(dev, "out_free_irqs\n"); |
7a291083 JBT |
2631 | goto out_free_irqs; |
2632 | } | |
2633 | } | |
2634 | ||
21eee2dd TK |
2635 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2636 | if (ret) { | |
2637 | ret = -EIO; | |
2638 | goto out_free_irqs; | |
2639 | } | |
2640 | ||
7a291083 | 2641 | port->state = EHEA_PORT_UP; |
21eee2dd TK |
2642 | |
2643 | ret = 0; | |
7a291083 JBT |
2644 | goto out; |
2645 | ||
2646 | out_free_irqs: | |
2647 | ehea_free_interrupts(dev); | |
2648 | ||
7a291083 JBT |
2649 | out_clean_pr: |
2650 | ehea_clean_all_portres(port); | |
2651 | out: | |
44c82152 | 2652 | if (ret) |
8c4877a4 | 2653 | netdev_info(dev, "Failed starting. ret=%i\n", ret); |
44c82152 | 2654 | |
21eee2dd | 2655 | ehea_update_bcmc_registrations(); |
21eee2dd | 2656 | ehea_update_firmware_handles(); |
21eee2dd | 2657 | |
7a291083 JBT |
2658 | return ret; |
2659 | } | |
2660 | ||
bea3348e SH |
2661 | static void port_napi_disable(struct ehea_port *port) |
2662 | { | |
2663 | int i; | |
2664 | ||
0173b793 | 2665 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2666 | napi_disable(&port->port_res[i].napi); |
2667 | } | |
2668 | ||
2669 | static void port_napi_enable(struct ehea_port *port) | |
2670 | { | |
2671 | int i; | |
2672 | ||
0173b793 | 2673 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
bea3348e SH |
2674 | napi_enable(&port->port_res[i].napi); |
2675 | } | |
2676 | ||
7a291083 JBT |
2677 | static int ehea_open(struct net_device *dev) |
2678 | { | |
2679 | int ret; | |
2680 | struct ehea_port *port = netdev_priv(dev); | |
2681 | ||
a5af6ad3 | 2682 | mutex_lock(&port->port_lock); |
7a291083 | 2683 | |
8c4877a4 | 2684 | netif_info(port, ifup, dev, "enabling port\n"); |
7a291083 JBT |
2685 | |
2686 | ret = ehea_up(dev); | |
bea3348e SH |
2687 | if (!ret) { |
2688 | port_napi_enable(port); | |
7a291083 | 2689 | netif_start_queue(dev); |
bea3348e | 2690 | } |
7a291083 | 2691 | |
a5af6ad3 | 2692 | mutex_unlock(&port->port_lock); |
7a291083 JBT |
2693 | |
2694 | return ret; | |
2695 | } | |
2696 | ||
2697 | static int ehea_down(struct net_device *dev) | |
2698 | { | |
bea3348e | 2699 | int ret; |
7a291083 JBT |
2700 | struct ehea_port *port = netdev_priv(dev); |
2701 | ||
2702 | if (port->state == EHEA_PORT_DOWN) | |
2703 | return 0; | |
2704 | ||
2705 | ehea_drop_multicast_list(dev); | |
21eee2dd TK |
2706 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
2707 | ||
7a291083 JBT |
2708 | ehea_free_interrupts(dev); |
2709 | ||
7a291083 | 2710 | port->state = EHEA_PORT_DOWN; |
44c82152 | 2711 | |
21eee2dd | 2712 | ehea_update_bcmc_registrations(); |
21eee2dd | 2713 | |
44c82152 TK |
2714 | ret = ehea_clean_all_portres(port); |
2715 | if (ret) | |
8c4877a4 | 2716 | netdev_info(dev, "Failed freeing resources. ret=%i\n", ret); |
44c82152 | 2717 | |
21eee2dd | 2718 | ehea_update_firmware_handles(); |
21eee2dd | 2719 | |
7a291083 JBT |
2720 | return ret; |
2721 | } | |
2722 | ||
2723 | static int ehea_stop(struct net_device *dev) | |
2724 | { | |
2725 | int ret; | |
2726 | struct ehea_port *port = netdev_priv(dev); | |
2727 | ||
8c4877a4 | 2728 | netif_info(port, ifdown, dev, "disabling port\n"); |
7a291083 | 2729 | |
2f69ae01 | 2730 | set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
4bb073c0 | 2731 | cancel_work_sync(&port->reset_task); |
a5af6ad3 | 2732 | mutex_lock(&port->port_lock); |
7a291083 | 2733 | netif_stop_queue(dev); |
0173b793 | 2734 | port_napi_disable(port); |
7a291083 | 2735 | ret = ehea_down(dev); |
a5af6ad3 | 2736 | mutex_unlock(&port->port_lock); |
2f69ae01 | 2737 | clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
7a291083 JBT |
2738 | return ret; |
2739 | } | |
2740 | ||
22559c5d | 2741 | static void ehea_purge_sq(struct ehea_qp *orig_qp) |
2c69448b JBT |
2742 | { |
2743 | struct ehea_qp qp = *orig_qp; | |
2744 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2745 | struct ehea_swqe *swqe; | |
2746 | int wqe_index; | |
2747 | int i; | |
2748 | ||
2749 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2750 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2751 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2752 | } | |
2753 | } | |
2754 | ||
22559c5d | 2755 | static void ehea_flush_sq(struct ehea_port *port) |
44fb3126 TK |
2756 | { |
2757 | int i; | |
2758 | ||
2759 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
2760 | struct ehea_port_res *pr = &port->port_res[i]; | |
2761 | int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count; | |
5b27d427 BL |
2762 | int ret; |
2763 | ||
2764 | ret = wait_event_timeout(port->swqe_avail_wq, | |
2765 | atomic_read(&pr->swqe_avail) >= swqe_max, | |
2766 | msecs_to_jiffies(100)); | |
2767 | ||
2768 | if (!ret) { | |
8c4877a4 | 2769 | pr_err("WARNING: sq not flushed completely\n"); |
5b27d427 | 2770 | break; |
44fb3126 TK |
2771 | } |
2772 | } | |
2773 | } | |
2774 | ||
2c69448b JBT |
2775 | int ehea_stop_qps(struct net_device *dev) |
2776 | { | |
2777 | struct ehea_port *port = netdev_priv(dev); | |
2778 | struct ehea_adapter *adapter = port->adapter; | |
508d2b5d | 2779 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2780 | int ret = -EIO; |
2781 | int dret; | |
2782 | int i; | |
2783 | u64 hret; | |
2784 | u64 dummy64 = 0; | |
2785 | u16 dummy16 = 0; | |
2786 | ||
3faf2693 | 2787 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2788 | if (!cb0) { |
2789 | ret = -ENOMEM; | |
2790 | goto out; | |
2791 | } | |
2792 | ||
2793 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2794 | struct ehea_port_res *pr = &port->port_res[i]; | |
2795 | struct ehea_qp *qp = pr->qp; | |
2796 | ||
2797 | /* Purge send queue */ | |
2798 | ehea_purge_sq(qp); | |
2799 | ||
2800 | /* Disable queue pair */ | |
2801 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2802 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2803 | cb0); | |
2804 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2805 | pr_err("query_ehea_qp failed (1)\n"); |
2c69448b JBT |
2806 | goto out; |
2807 | } | |
2808 | ||
2809 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2810 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2811 | ||
2812 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2813 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2814 | 1), cb0, &dummy64, | |
2815 | &dummy64, &dummy16, &dummy16); | |
2816 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2817 | pr_err("modify_ehea_qp failed (1)\n"); |
2c69448b JBT |
2818 | goto out; |
2819 | } | |
2820 | ||
2821 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2822 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2823 | cb0); | |
2824 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2825 | pr_err("query_ehea_qp failed (2)\n"); |
2c69448b JBT |
2826 | goto out; |
2827 | } | |
2828 | ||
2829 | /* deregister shared memory regions */ | |
2830 | dret = ehea_rem_smrs(pr); | |
2831 | if (dret) { | |
8c4877a4 | 2832 | pr_err("unreg shared memory region failed\n"); |
2c69448b JBT |
2833 | goto out; |
2834 | } | |
2835 | } | |
2836 | ||
2837 | ret = 0; | |
2838 | out: | |
3faf2693 | 2839 | free_page((unsigned long)cb0); |
2c69448b JBT |
2840 | |
2841 | return ret; | |
2842 | } | |
2843 | ||
508d2b5d | 2844 | void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr) |
2c69448b JBT |
2845 | { |
2846 | struct ehea_qp qp = *orig_qp; | |
2847 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2848 | struct ehea_rwqe *rwqe; | |
2849 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2850 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2851 | struct sk_buff *skb; | |
2852 | u32 lkey = pr->recv_mr.lkey; | |
2853 | ||
2854 | ||
2855 | int i; | |
2856 | int index; | |
2857 | ||
2858 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2859 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2860 | rwqe->sg_list[0].l_key = lkey; | |
2861 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2862 | skb = skba_rq2[index]; | |
2863 | if (skb) | |
2864 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2865 | } | |
2866 | ||
2867 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2868 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2869 | rwqe->sg_list[0].l_key = lkey; | |
2870 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2871 | skb = skba_rq3[index]; | |
2872 | if (skb) | |
2873 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2874 | } | |
2875 | } | |
2876 | ||
2877 | int ehea_restart_qps(struct net_device *dev) | |
2878 | { | |
2879 | struct ehea_port *port = netdev_priv(dev); | |
2880 | struct ehea_adapter *adapter = port->adapter; | |
2881 | int ret = 0; | |
2882 | int i; | |
2883 | ||
508d2b5d | 2884 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2885 | u64 hret; |
2886 | u64 dummy64 = 0; | |
2887 | u16 dummy16 = 0; | |
2888 | ||
3faf2693 | 2889 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2890 | if (!cb0) { |
2891 | ret = -ENOMEM; | |
2892 | goto out; | |
2893 | } | |
2894 | ||
2895 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2896 | struct ehea_port_res *pr = &port->port_res[i]; | |
2897 | struct ehea_qp *qp = pr->qp; | |
2898 | ||
2899 | ret = ehea_gen_smrs(pr); | |
2900 | if (ret) { | |
8c4877a4 | 2901 | netdev_err(dev, "creation of shared memory regions failed\n"); |
2c69448b JBT |
2902 | goto out; |
2903 | } | |
2904 | ||
2905 | ehea_update_rqs(qp, pr); | |
2906 | ||
2907 | /* Enable queue pair */ | |
2908 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2909 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2910 | cb0); | |
2911 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2912 | netdev_err(dev, "query_ehea_qp failed (1)\n"); |
2c69448b JBT |
2913 | goto out; |
2914 | } | |
2915 | ||
2916 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2917 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2918 | ||
2919 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2920 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2921 | 1), cb0, &dummy64, | |
2922 | &dummy64, &dummy16, &dummy16); | |
2923 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2924 | netdev_err(dev, "modify_ehea_qp failed (1)\n"); |
2c69448b JBT |
2925 | goto out; |
2926 | } | |
2927 | ||
2928 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2929 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2930 | cb0); | |
2931 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2932 | netdev_err(dev, "query_ehea_qp failed (2)\n"); |
2c69448b JBT |
2933 | goto out; |
2934 | } | |
2935 | ||
2936 | /* refill entire queue */ | |
2937 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2938 | ehea_refill_rq2(pr, 0); | |
2939 | ehea_refill_rq3(pr, 0); | |
2940 | } | |
2941 | out: | |
3faf2693 | 2942 | free_page((unsigned long)cb0); |
2c69448b JBT |
2943 | |
2944 | return ret; | |
2945 | } | |
2946 | ||
c4028958 | 2947 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2948 | { |
2949 | int ret; | |
c4028958 DH |
2950 | struct ehea_port *port = |
2951 | container_of(work, struct ehea_port, reset_task); | |
2952 | struct net_device *dev = port->netdev; | |
7a291083 | 2953 | |
099473c1 | 2954 | mutex_lock(&dlpar_mem_lock); |
7a291083 | 2955 | port->resets++; |
a5af6ad3 | 2956 | mutex_lock(&port->port_lock); |
7a291083 | 2957 | netif_stop_queue(dev); |
bea3348e SH |
2958 | |
2959 | port_napi_disable(port); | |
7a291083 | 2960 | |
44c82152 | 2961 | ehea_down(dev); |
7a291083 JBT |
2962 | |
2963 | ret = ehea_up(dev); | |
44c82152 | 2964 | if (ret) |
7a291083 | 2965 | goto out; |
7a291083 | 2966 | |
2c69448b JBT |
2967 | ehea_set_multicast_list(dev); |
2968 | ||
8c4877a4 | 2969 | netif_info(port, timer, dev, "reset successful\n"); |
7a291083 | 2970 | |
bea3348e SH |
2971 | port_napi_enable(port); |
2972 | ||
7a291083 JBT |
2973 | netif_wake_queue(dev); |
2974 | out: | |
a5af6ad3 | 2975 | mutex_unlock(&port->port_lock); |
099473c1 | 2976 | mutex_unlock(&dlpar_mem_lock); |
7a291083 JBT |
2977 | } |
2978 | ||
3d6b892b | 2979 | static void ehea_rereg_mrs(void) |
44c82152 TK |
2980 | { |
2981 | int ret, i; | |
2982 | struct ehea_adapter *adapter; | |
2983 | ||
8c4877a4 | 2984 | pr_info("LPAR memory changed - re-initializing driver\n"); |
44c82152 TK |
2985 | |
2986 | list_for_each_entry(adapter, &adapter_list, list) | |
2987 | if (adapter->active_ports) { | |
2988 | /* Shutdown all ports */ | |
2989 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2990 | struct ehea_port *port = adapter->port[i]; | |
a5af6ad3 | 2991 | struct net_device *dev; |
44c82152 | 2992 | |
a5af6ad3 DW |
2993 | if (!port) |
2994 | continue; | |
44c82152 | 2995 | |
a5af6ad3 DW |
2996 | dev = port->netdev; |
2997 | ||
2998 | if (dev->flags & IFF_UP) { | |
2999 | mutex_lock(&port->port_lock); | |
3000 | netif_stop_queue(dev); | |
df39e8ba | 3001 | ehea_flush_sq(port); |
a5af6ad3 DW |
3002 | ret = ehea_stop_qps(dev); |
3003 | if (ret) { | |
3004 | mutex_unlock(&port->port_lock); | |
3005 | goto out; | |
44c82152 | 3006 | } |
a5af6ad3 DW |
3007 | port_napi_disable(port); |
3008 | mutex_unlock(&port->port_lock); | |
44c82152 | 3009 | } |
2928db4c | 3010 | reset_sq_restart_flag(port); |
44c82152 TK |
3011 | } |
3012 | ||
3013 | /* Unregister old memory region */ | |
3014 | ret = ehea_rem_mr(&adapter->mr); | |
3015 | if (ret) { | |
8c4877a4 | 3016 | pr_err("unregister MR failed - driver inoperable!\n"); |
44c82152 TK |
3017 | goto out; |
3018 | } | |
3019 | } | |
3020 | ||
44c82152 TK |
3021 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
3022 | ||
3023 | list_for_each_entry(adapter, &adapter_list, list) | |
3024 | if (adapter->active_ports) { | |
3025 | /* Register new memory region */ | |
3026 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
3027 | if (ret) { | |
8c4877a4 | 3028 | pr_err("register MR failed - driver inoperable!\n"); |
44c82152 TK |
3029 | goto out; |
3030 | } | |
3031 | ||
3032 | /* Restart all ports */ | |
3033 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
3034 | struct ehea_port *port = adapter->port[i]; | |
3035 | ||
3036 | if (port) { | |
3037 | struct net_device *dev = port->netdev; | |
3038 | ||
3039 | if (dev->flags & IFF_UP) { | |
a5af6ad3 | 3040 | mutex_lock(&port->port_lock); |
2c69448b | 3041 | ret = ehea_restart_qps(dev); |
6f4d6dc1 BL |
3042 | if (!ret) { |
3043 | check_sqs(port); | |
3044 | port_napi_enable(port); | |
44c82152 | 3045 | netif_wake_queue(dev); |
6f4d6dc1 BL |
3046 | } else { |
3047 | netdev_err(dev, "Unable to restart QPS\n"); | |
3048 | } | |
a5af6ad3 | 3049 | mutex_unlock(&port->port_lock); |
44c82152 TK |
3050 | } |
3051 | } | |
3052 | } | |
3053 | } | |
8c4877a4 | 3054 | pr_info("re-initializing driver complete\n"); |
44c82152 TK |
3055 | out: |
3056 | return; | |
3057 | } | |
3058 | ||
7a291083 JBT |
3059 | static void ehea_tx_watchdog(struct net_device *dev) |
3060 | { | |
3061 | struct ehea_port *port = netdev_priv(dev); | |
3062 | ||
2c69448b JBT |
3063 | if (netif_carrier_ok(dev) && |
3064 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
2f69ae01 | 3065 | ehea_schedule_port_reset(port); |
7a291083 JBT |
3066 | } |
3067 | ||
3068 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
3069 | { | |
3070 | struct hcp_query_ehea *cb; | |
3071 | u64 hret; | |
3072 | int ret; | |
3073 | ||
3faf2693 | 3074 | cb = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
3075 | if (!cb) { |
3076 | ret = -ENOMEM; | |
3077 | goto out; | |
3078 | } | |
3079 | ||
3080 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
3081 | ||
3082 | if (hret != H_SUCCESS) { | |
3083 | ret = -EIO; | |
3084 | goto out_herr; | |
3085 | } | |
3086 | ||
7a291083 JBT |
3087 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
3088 | ret = 0; | |
3089 | ||
3090 | out_herr: | |
3faf2693 | 3091 | free_page((unsigned long)cb); |
7a291083 JBT |
3092 | out: |
3093 | return ret; | |
3094 | } | |
3095 | ||
1acf2318 | 3096 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 3097 | { |
7a291083 | 3098 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
3099 | u64 hret; |
3100 | int ret = 0; | |
7a291083 | 3101 | |
1acf2318 | 3102 | *jumbo = 0; |
7a291083 | 3103 | |
1acf2318 | 3104 | /* (Try to) enable *jumbo frames */ |
3faf2693 | 3105 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 3106 | if (!cb4) { |
8c4877a4 | 3107 | pr_err("no mem for cb4\n"); |
1acf2318 JBT |
3108 | ret = -ENOMEM; |
3109 | goto out; | |
7a291083 | 3110 | } else { |
1acf2318 | 3111 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
3112 | port->logical_port_id, |
3113 | H_PORT_CB4, | |
3114 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
3115 | if (hret == H_SUCCESS) { |
3116 | if (cb4->jumbo_frame) | |
1acf2318 | 3117 | *jumbo = 1; |
9c750b7d TK |
3118 | else { |
3119 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
3120 | hret = ehea_h_modify_ehea_port(port->adapter-> |
3121 | handle, | |
9c750b7d | 3122 | port-> |
1acf2318 | 3123 | logical_port_id, |
9c750b7d TK |
3124 | H_PORT_CB4, |
3125 | H_PORT_CB4_JUMBO, | |
3126 | cb4); | |
3127 | if (hret == H_SUCCESS) | |
1acf2318 | 3128 | *jumbo = 1; |
9c750b7d | 3129 | } |
1acf2318 JBT |
3130 | } else |
3131 | ret = -EINVAL; | |
3132 | ||
3faf2693 | 3133 | free_page((unsigned long)cb4); |
7a291083 | 3134 | } |
1acf2318 JBT |
3135 | out: |
3136 | return ret; | |
3137 | } | |
3138 | ||
3139 | static ssize_t ehea_show_port_id(struct device *dev, | |
3140 | struct device_attribute *attr, char *buf) | |
3141 | { | |
3142 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 3143 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
3144 | } |
3145 | ||
3146 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
3147 | NULL); | |
3148 | ||
3149 | static void __devinit logical_port_release(struct device *dev) | |
3150 | { | |
3151 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
61c7a080 | 3152 | of_node_put(port->ofdev.dev.of_node); |
1acf2318 JBT |
3153 | } |
3154 | ||
3155 | static struct device *ehea_register_port(struct ehea_port *port, | |
3156 | struct device_node *dn) | |
3157 | { | |
3158 | int ret; | |
3159 | ||
61c7a080 | 3160 | port->ofdev.dev.of_node = of_node_get(dn); |
6b08f3ae | 3161 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 3162 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 3163 | |
db1d7bf7 | 3164 | dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++); |
1acf2318 JBT |
3165 | port->ofdev.dev.release = logical_port_release; |
3166 | ||
3167 | ret = of_device_register(&port->ofdev); | |
3168 | if (ret) { | |
8c4877a4 | 3169 | pr_err("failed to register device. ret=%d\n", ret); |
1acf2318 JBT |
3170 | goto out; |
3171 | } | |
3172 | ||
3173 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 3174 | if (ret) { |
8c4877a4 | 3175 | pr_err("failed to register attributes, ret=%d\n", ret); |
1acf2318 JBT |
3176 | goto out_unreg_of_dev; |
3177 | } | |
e542aa6b | 3178 | |
1acf2318 JBT |
3179 | return &port->ofdev.dev; |
3180 | ||
3181 | out_unreg_of_dev: | |
3182 | of_device_unregister(&port->ofdev); | |
3183 | out: | |
3184 | return NULL; | |
3185 | } | |
3186 | ||
3187 | static void ehea_unregister_port(struct ehea_port *port) | |
3188 | { | |
3189 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
3190 | of_device_unregister(&port->ofdev); | |
3191 | } | |
3192 | ||
086c1b2c TK |
3193 | static const struct net_device_ops ehea_netdev_ops = { |
3194 | .ndo_open = ehea_open, | |
3195 | .ndo_stop = ehea_stop, | |
3196 | .ndo_start_xmit = ehea_start_xmit, | |
3197 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3198 | .ndo_poll_controller = ehea_netpoll, | |
3199 | #endif | |
3200 | .ndo_get_stats = ehea_get_stats, | |
3201 | .ndo_set_mac_address = ehea_set_mac_addr, | |
240c102d | 3202 | .ndo_validate_addr = eth_validate_addr, |
086c1b2c TK |
3203 | .ndo_set_multicast_list = ehea_set_multicast_list, |
3204 | .ndo_change_mtu = ehea_change_mtu, | |
3205 | .ndo_vlan_rx_register = ehea_vlan_rx_register, | |
3206 | .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid, | |
32e8f9a8 AB |
3207 | .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid, |
3208 | .ndo_tx_timeout = ehea_tx_watchdog, | |
086c1b2c TK |
3209 | }; |
3210 | ||
1acf2318 JBT |
3211 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, |
3212 | u32 logical_port_id, | |
3213 | struct device_node *dn) | |
3214 | { | |
3215 | int ret; | |
3216 | struct net_device *dev; | |
3217 | struct ehea_port *port; | |
3218 | struct device *port_dev; | |
3219 | int jumbo; | |
3220 | ||
3221 | /* allocate memory for the port structures */ | |
3222 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
3223 | ||
3224 | if (!dev) { | |
8c4877a4 | 3225 | pr_err("no mem for net_device\n"); |
1acf2318 JBT |
3226 | ret = -ENOMEM; |
3227 | goto out_err; | |
3228 | } | |
3229 | ||
3230 | port = netdev_priv(dev); | |
3231 | ||
a5af6ad3 | 3232 | mutex_init(&port->port_lock); |
1acf2318 JBT |
3233 | port->state = EHEA_PORT_DOWN; |
3234 | port->sig_comp_iv = sq_entries / 10; | |
3235 | ||
3236 | port->adapter = adapter; | |
3237 | port->netdev = dev; | |
3238 | port->logical_port_id = logical_port_id; | |
3239 | ||
3240 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
3241 | ||
3242 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
3243 | if (!port->mc_list) { | |
3244 | ret = -ENOMEM; | |
3245 | goto out_free_ethdev; | |
3246 | } | |
3247 | ||
3248 | INIT_LIST_HEAD(&port->mc_list->list); | |
3249 | ||
3250 | ret = ehea_sense_port_attr(port); | |
3251 | if (ret) | |
3252 | goto out_free_mc_list; | |
3253 | ||
3254 | port_dev = ehea_register_port(port, dn); | |
3255 | if (!port_dev) | |
3256 | goto out_free_mc_list; | |
3257 | ||
3258 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
3259 | |
3260 | /* initialize net_device structure */ | |
7a291083 JBT |
3261 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
3262 | ||
086c1b2c TK |
3263 | dev->netdev_ops = &ehea_netdev_ops; |
3264 | ehea_set_ethtool_ops(dev); | |
3265 | ||
7a291083 | 3266 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO |
dc01c447 | 3267 | | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX |
7a291083 JBT |
3268 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER |
3269 | | NETIF_F_LLTX; | |
7a291083 JBT |
3270 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; |
3271 | ||
c7757fdb BL |
3272 | if (use_lro) |
3273 | dev->features |= NETIF_F_LRO; | |
3274 | ||
c4028958 | 3275 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 | 3276 | |
21ccc793 AB |
3277 | init_waitqueue_head(&port->swqe_avail_wq); |
3278 | init_waitqueue_head(&port->restart_wq); | |
3279 | ||
7a291083 JBT |
3280 | ret = register_netdev(dev); |
3281 | if (ret) { | |
8c4877a4 | 3282 | pr_err("register_netdev failed. ret=%d\n", ret); |
21eee2dd | 3283 | goto out_unreg_port; |
7a291083 JBT |
3284 | } |
3285 | ||
d4dc4ec9 JBT |
3286 | port->lro_max_aggr = lro_max_aggr; |
3287 | ||
1acf2318 | 3288 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 3289 | if (ret) |
8c4877a4 | 3290 | netdev_err(dev, "failed determining jumbo frame status\n"); |
1acf2318 | 3291 | |
8c4877a4 JP |
3292 | netdev_info(dev, "Jumbo frames are %sabled\n", |
3293 | jumbo == 1 ? "en" : "dis"); | |
9c750b7d | 3294 | |
44c82152 TK |
3295 | adapter->active_ports++; |
3296 | ||
1acf2318 | 3297 | return port; |
7a291083 | 3298 | |
1acf2318 JBT |
3299 | out_unreg_port: |
3300 | ehea_unregister_port(port); | |
3301 | ||
3302 | out_free_mc_list: | |
7a291083 | 3303 | kfree(port->mc_list); |
1acf2318 JBT |
3304 | |
3305 | out_free_ethdev: | |
3306 | free_netdev(dev); | |
3307 | ||
3308 | out_err: | |
8c4877a4 JP |
3309 | pr_err("setting up logical port with id=%d failed, ret=%d\n", |
3310 | logical_port_id, ret); | |
1acf2318 JBT |
3311 | return NULL; |
3312 | } | |
3313 | ||
3314 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
3315 | { | |
7fb1c2ac | 3316 | struct ehea_adapter *adapter = port->adapter; |
f5c35cc1 TH |
3317 | |
3318 | cancel_work_sync(&port->reset_task); | |
1acf2318 JBT |
3319 | unregister_netdev(port->netdev); |
3320 | ehea_unregister_port(port); | |
3321 | kfree(port->mc_list); | |
3322 | free_netdev(port->netdev); | |
7fb1c2ac | 3323 | adapter->active_ports--; |
7a291083 JBT |
3324 | } |
3325 | ||
3326 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
3327 | { | |
1acf2318 JBT |
3328 | struct device_node *lhea_dn; |
3329 | struct device_node *eth_dn = NULL; | |
d1d25aab | 3330 | |
9f9a3b8a | 3331 | const u32 *dn_log_port_id; |
1acf2318 JBT |
3332 | int i = 0; |
3333 | ||
61c7a080 | 3334 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3335 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3336 | |
40cd3a45 | 3337 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3338 | NULL); |
1acf2318 | 3339 | if (!dn_log_port_id) { |
8c4877a4 JP |
3340 | pr_err("bad device node: eth_dn name=%s\n", |
3341 | eth_dn->full_name); | |
1acf2318 JBT |
3342 | continue; |
3343 | } | |
7a291083 | 3344 | |
1211bb6d | 3345 | if (ehea_add_adapter_mr(adapter)) { |
8c4877a4 | 3346 | pr_err("creating MR failed\n"); |
1211bb6d TK |
3347 | of_node_put(eth_dn); |
3348 | return -EIO; | |
3349 | } | |
3350 | ||
1acf2318 JBT |
3351 | adapter->port[i] = ehea_setup_single_port(adapter, |
3352 | *dn_log_port_id, | |
3353 | eth_dn); | |
7a291083 | 3354 | if (adapter->port[i]) |
8c4877a4 JP |
3355 | netdev_info(adapter->port[i]->netdev, |
3356 | "logical port id #%d\n", *dn_log_port_id); | |
1211bb6d TK |
3357 | else |
3358 | ehea_remove_adapter_mr(adapter); | |
3359 | ||
1acf2318 | 3360 | i++; |
ee289b64 | 3361 | } |
1211bb6d | 3362 | return 0; |
1acf2318 JBT |
3363 | } |
3364 | ||
e542aa6b JBT |
3365 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3366 | u32 logical_port_id) | |
1acf2318 JBT |
3367 | { |
3368 | struct device_node *lhea_dn; | |
3369 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3370 | const u32 *dn_log_port_id; |
1acf2318 | 3371 | |
61c7a080 | 3372 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3373 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3374 | |
40cd3a45 | 3375 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3376 | NULL); |
1acf2318 JBT |
3377 | if (dn_log_port_id) |
3378 | if (*dn_log_port_id == logical_port_id) | |
3379 | return eth_dn; | |
ee289b64 | 3380 | } |
1acf2318 JBT |
3381 | |
3382 | return NULL; | |
3383 | } | |
3384 | ||
3385 | static ssize_t ehea_probe_port(struct device *dev, | |
3386 | struct device_attribute *attr, | |
3387 | const char *buf, size_t count) | |
3388 | { | |
c7ae011d | 3389 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3390 | struct ehea_port *port; |
3391 | struct device_node *eth_dn = NULL; | |
3392 | int i; | |
3393 | ||
3394 | u32 logical_port_id; | |
3395 | ||
a8e34fda | 3396 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3397 | |
3398 | port = ehea_get_port(adapter, logical_port_id); | |
3399 | ||
3400 | if (port) { | |
8c4877a4 JP |
3401 | netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n", |
3402 | logical_port_id); | |
1acf2318 | 3403 | return -EINVAL; |
7a291083 | 3404 | } |
e542aa6b | 3405 | |
1acf2318 | 3406 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3407 | |
1acf2318 | 3408 | if (!eth_dn) { |
8c4877a4 | 3409 | pr_info("no logical port with id %d found\n", logical_port_id); |
1acf2318 JBT |
3410 | return -EINVAL; |
3411 | } | |
e542aa6b | 3412 | |
1211bb6d | 3413 | if (ehea_add_adapter_mr(adapter)) { |
8c4877a4 | 3414 | pr_err("creating MR failed\n"); |
1211bb6d TK |
3415 | return -EIO; |
3416 | } | |
3417 | ||
1acf2318 | 3418 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3419 | |
1eef4e04 JBT |
3420 | of_node_put(eth_dn); |
3421 | ||
1acf2318 | 3422 | if (port) { |
508d2b5d | 3423 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3424 | if (!adapter->port[i]) { |
3425 | adapter->port[i] = port; | |
3426 | break; | |
3427 | } | |
7a291083 | 3428 | |
8c4877a4 JP |
3429 | netdev_info(port->netdev, "added: (logical port id=%d)\n", |
3430 | logical_port_id); | |
1211bb6d TK |
3431 | } else { |
3432 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3433 | return -EIO; |
1211bb6d | 3434 | } |
7a291083 | 3435 | |
1acf2318 JBT |
3436 | return (ssize_t) count; |
3437 | } | |
3438 | ||
3439 | static ssize_t ehea_remove_port(struct device *dev, | |
3440 | struct device_attribute *attr, | |
3441 | const char *buf, size_t count) | |
3442 | { | |
c7ae011d | 3443 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3444 | struct ehea_port *port; |
3445 | int i; | |
3446 | u32 logical_port_id; | |
3447 | ||
a8e34fda | 3448 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3449 | |
3450 | port = ehea_get_port(adapter, logical_port_id); | |
3451 | ||
3452 | if (port) { | |
8c4877a4 JP |
3453 | netdev_info(port->netdev, "removed: (logical port id=%d)\n", |
3454 | logical_port_id); | |
1acf2318 JBT |
3455 | |
3456 | ehea_shutdown_single_port(port); | |
3457 | ||
508d2b5d | 3458 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3459 | if (adapter->port[i] == port) { |
3460 | adapter->port[i] = NULL; | |
3461 | break; | |
3462 | } | |
3463 | } else { | |
8c4877a4 JP |
3464 | pr_err("removing port with logical port id=%d failed. port not configured.\n", |
3465 | logical_port_id); | |
1acf2318 JBT |
3466 | return -EINVAL; |
3467 | } | |
3468 | ||
1211bb6d TK |
3469 | ehea_remove_adapter_mr(adapter); |
3470 | ||
1acf2318 JBT |
3471 | return (ssize_t) count; |
3472 | } | |
3473 | ||
3474 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
3475 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
3476 | ||
2dc11581 | 3477 | int ehea_create_device_sysfs(struct platform_device *dev) |
1acf2318 | 3478 | { |
6b08f3ae | 3479 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3480 | if (ret) |
3481 | goto out; | |
3482 | ||
6b08f3ae | 3483 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3484 | out: |
7a291083 JBT |
3485 | return ret; |
3486 | } | |
3487 | ||
2dc11581 | 3488 | void ehea_remove_device_sysfs(struct platform_device *dev) |
1acf2318 | 3489 | { |
6b08f3ae JF |
3490 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3491 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3492 | } |
3493 | ||
2dc11581 | 3494 | static int __devinit ehea_probe_adapter(struct platform_device *dev, |
1acf2318 | 3495 | const struct of_device_id *id) |
7a291083 JBT |
3496 | { |
3497 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3498 | const u64 *adapter_handle; |
7a291083 JBT |
3499 | int ret; |
3500 | ||
61c7a080 | 3501 | if (!dev || !dev->dev.of_node) { |
8c4877a4 | 3502 | pr_err("Invalid ibmebus device probed\n"); |
1eef4e04 JBT |
3503 | return -EINVAL; |
3504 | } | |
3505 | ||
7a291083 JBT |
3506 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
3507 | if (!adapter) { | |
3508 | ret = -ENOMEM; | |
6b08f3ae | 3509 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3510 | goto out; |
3511 | } | |
3512 | ||
44c82152 TK |
3513 | list_add(&adapter->list, &adapter_list); |
3514 | ||
6b08f3ae | 3515 | adapter->ofdev = dev; |
1acf2318 | 3516 | |
61c7a080 | 3517 | adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle", |
d1d25aab | 3518 | NULL); |
061bf3cd TK |
3519 | if (adapter_handle) |
3520 | adapter->handle = *adapter_handle; | |
3521 | ||
3522 | if (!adapter->handle) { | |
6b08f3ae | 3523 | dev_err(&dev->dev, "failed getting handle for adapter" |
61c7a080 | 3524 | " '%s'\n", dev->dev.of_node->full_name); |
7a291083 JBT |
3525 | ret = -ENODEV; |
3526 | goto out_free_ad; | |
3527 | } | |
3528 | ||
7a291083 JBT |
3529 | adapter->pd = EHEA_PD_ID; |
3530 | ||
c7ae011d | 3531 | dev_set_drvdata(&dev->dev, adapter); |
7a291083 | 3532 | |
7a291083 JBT |
3533 | |
3534 | /* initialize adapter and ports */ | |
3535 | /* get adapter properties */ | |
3536 | ret = ehea_sense_adapter_attr(adapter); | |
3537 | if (ret) { | |
898eb71c | 3538 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3539 | goto out_free_ad; |
7a291083 | 3540 | } |
7a291083 JBT |
3541 | |
3542 | adapter->neq = ehea_create_eq(adapter, | |
3543 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3544 | if (!adapter->neq) { | |
1eef4e04 | 3545 | ret = -EIO; |
898eb71c | 3546 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3547 | goto out_free_ad; |
7a291083 JBT |
3548 | } |
3549 | ||
3550 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3551 | (unsigned long)adapter); | |
3552 | ||
6b08f3ae | 3553 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
38515e90 | 3554 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
3555 | "ehea_neq", adapter); |
3556 | if (ret) { | |
898eb71c | 3557 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
7a291083 JBT |
3558 | goto out_kill_eq; |
3559 | } | |
3560 | ||
1eef4e04 JBT |
3561 | ret = ehea_create_device_sysfs(dev); |
3562 | if (ret) | |
3bf76b81 | 3563 | goto out_free_irq; |
1acf2318 | 3564 | |
7a291083 JBT |
3565 | ret = ehea_setup_ports(adapter); |
3566 | if (ret) { | |
898eb71c | 3567 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3568 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3569 | } |
3570 | ||
3571 | ret = 0; | |
3572 | goto out; | |
3573 | ||
1acf2318 JBT |
3574 | out_rem_dev_sysfs: |
3575 | ehea_remove_device_sysfs(dev); | |
3576 | ||
7a291083 | 3577 | out_free_irq: |
6b08f3ae | 3578 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
7a291083 JBT |
3579 | |
3580 | out_kill_eq: | |
3581 | ehea_destroy_eq(adapter->neq); | |
3582 | ||
7a291083 | 3583 | out_free_ad: |
51621fbd | 3584 | list_del(&adapter->list); |
7a291083 | 3585 | kfree(adapter); |
21eee2dd | 3586 | |
7a291083 | 3587 | out: |
21eee2dd | 3588 | ehea_update_firmware_handles(); |
52e21b1b | 3589 | |
7a291083 JBT |
3590 | return ret; |
3591 | } | |
3592 | ||
2dc11581 | 3593 | static int __devexit ehea_remove(struct platform_device *dev) |
7a291083 | 3594 | { |
c7ae011d | 3595 | struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev); |
7a291083 JBT |
3596 | int i; |
3597 | ||
1acf2318 | 3598 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3599 | if (adapter->port[i]) { |
3600 | ehea_shutdown_single_port(adapter->port[i]); | |
3601 | adapter->port[i] = NULL; | |
3602 | } | |
1acf2318 JBT |
3603 | |
3604 | ehea_remove_device_sysfs(dev); | |
3605 | ||
6b08f3ae | 3606 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3607 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3608 | |
3609 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3610 | ehea_remove_adapter_mr(adapter); |
44c82152 | 3611 | list_del(&adapter->list); |
7a291083 | 3612 | kfree(adapter); |
44c82152 | 3613 | |
21eee2dd | 3614 | ehea_update_firmware_handles(); |
21eee2dd | 3615 | |
7a291083 JBT |
3616 | return 0; |
3617 | } | |
3618 | ||
21eee2dd TK |
3619 | void ehea_crash_handler(void) |
3620 | { | |
3621 | int i; | |
3622 | ||
3623 | if (ehea_fw_handles.arr) | |
3624 | for (i = 0; i < ehea_fw_handles.num_entries; i++) | |
3625 | ehea_h_free_resource(ehea_fw_handles.arr[i].adh, | |
3626 | ehea_fw_handles.arr[i].fwh, | |
3627 | FORCE_FREE); | |
3628 | ||
3629 | if (ehea_bcmc_regs.arr) | |
3630 | for (i = 0; i < ehea_bcmc_regs.num_entries; i++) | |
3631 | ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh, | |
3632 | ehea_bcmc_regs.arr[i].port_id, | |
3633 | ehea_bcmc_regs.arr[i].reg_type, | |
3634 | ehea_bcmc_regs.arr[i].macaddr, | |
3635 | 0, H_DEREG_BCMC); | |
3636 | } | |
3637 | ||
48cfb14f HH |
3638 | static int ehea_mem_notifier(struct notifier_block *nb, |
3639 | unsigned long action, void *data) | |
3640 | { | |
a7c561f2 | 3641 | int ret = NOTIFY_BAD; |
d4f12daf | 3642 | struct memory_notify *arg = data; |
a7c561f2 | 3643 | |
099473c1 | 3644 | mutex_lock(&dlpar_mem_lock); |
a7c561f2 | 3645 | |
48cfb14f | 3646 | switch (action) { |
d4f12daf | 3647 | case MEM_CANCEL_OFFLINE: |
8c4877a4 | 3648 | pr_info("memory offlining canceled"); |
d4f12daf HH |
3649 | /* Readd canceled memory block */ |
3650 | case MEM_ONLINE: | |
8c4877a4 | 3651 | pr_info("memory is going online"); |
3876732c | 3652 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
d4f12daf | 3653 | if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages)) |
a7c561f2 | 3654 | goto out_unlock; |
3d6b892b | 3655 | ehea_rereg_mrs(); |
d4f12daf HH |
3656 | break; |
3657 | case MEM_GOING_OFFLINE: | |
8c4877a4 | 3658 | pr_info("memory is going offline"); |
3876732c | 3659 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
d4f12daf | 3660 | if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages)) |
a7c561f2 | 3661 | goto out_unlock; |
3d6b892b | 3662 | ehea_rereg_mrs(); |
48cfb14f HH |
3663 | break; |
3664 | default: | |
3665 | break; | |
3666 | } | |
52e21b1b JBT |
3667 | |
3668 | ehea_update_firmware_handles(); | |
a7c561f2 | 3669 | ret = NOTIFY_OK; |
52e21b1b | 3670 | |
a7c561f2 TK |
3671 | out_unlock: |
3672 | mutex_unlock(&dlpar_mem_lock); | |
a7c561f2 | 3673 | return ret; |
48cfb14f HH |
3674 | } |
3675 | ||
3676 | static struct notifier_block ehea_mem_nb = { | |
3677 | .notifier_call = ehea_mem_notifier, | |
3678 | }; | |
3679 | ||
2a6f4e49 JBT |
3680 | static int ehea_reboot_notifier(struct notifier_block *nb, |
3681 | unsigned long action, void *unused) | |
3682 | { | |
3683 | if (action == SYS_RESTART) { | |
8c4877a4 | 3684 | pr_info("Reboot: freeing all eHEA resources\n"); |
2a6f4e49 JBT |
3685 | ibmebus_unregister_driver(&ehea_driver); |
3686 | } | |
3687 | return NOTIFY_DONE; | |
3688 | } | |
3689 | ||
3690 | static struct notifier_block ehea_reboot_nb = { | |
508d2b5d | 3691 | .notifier_call = ehea_reboot_notifier, |
2a6f4e49 JBT |
3692 | }; |
3693 | ||
7a291083 JBT |
3694 | static int check_module_parm(void) |
3695 | { | |
3696 | int ret = 0; | |
3697 | ||
3698 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3699 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
8c4877a4 | 3700 | pr_info("Bad parameter: rq1_entries\n"); |
7a291083 JBT |
3701 | ret = -EINVAL; |
3702 | } | |
3703 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3704 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
8c4877a4 | 3705 | pr_info("Bad parameter: rq2_entries\n"); |
7a291083 JBT |
3706 | ret = -EINVAL; |
3707 | } | |
3708 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3709 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
8c4877a4 | 3710 | pr_info("Bad parameter: rq3_entries\n"); |
7a291083 JBT |
3711 | ret = -EINVAL; |
3712 | } | |
3713 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3714 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
8c4877a4 | 3715 | pr_info("Bad parameter: sq_entries\n"); |
7a291083 JBT |
3716 | ret = -EINVAL; |
3717 | } | |
3718 | ||
3719 | return ret; | |
3720 | } | |
3721 | ||
4c3ca4da JBT |
3722 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3723 | char *buf) | |
3724 | { | |
3725 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3726 | } | |
3727 | ||
3728 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3729 | ehea_show_capabilities, NULL); | |
3730 | ||
7a291083 JBT |
3731 | int __init ehea_module_init(void) |
3732 | { | |
3733 | int ret; | |
3734 | ||
8c4877a4 | 3735 | pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION); |
7a291083 | 3736 | |
21eee2dd TK |
3737 | memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles)); |
3738 | memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs)); | |
3739 | ||
9f71a568 | 3740 | mutex_init(&ehea_fw_handles.lock); |
5c2cec14 | 3741 | spin_lock_init(&ehea_bcmc_regs.lock); |
44c82152 | 3742 | |
7a291083 JBT |
3743 | ret = check_module_parm(); |
3744 | if (ret) | |
3745 | goto out; | |
44c82152 TK |
3746 | |
3747 | ret = ehea_create_busmap(); | |
3748 | if (ret) | |
3749 | goto out; | |
3750 | ||
21eee2dd TK |
3751 | ret = register_reboot_notifier(&ehea_reboot_nb); |
3752 | if (ret) | |
8c4877a4 | 3753 | pr_info("failed registering reboot notifier\n"); |
21eee2dd | 3754 | |
48cfb14f HH |
3755 | ret = register_memory_notifier(&ehea_mem_nb); |
3756 | if (ret) | |
8c4877a4 | 3757 | pr_info("failed registering memory remove notifier\n"); |
48cfb14f | 3758 | |
c061b18d | 3759 | ret = crash_shutdown_register(ehea_crash_handler); |
21eee2dd | 3760 | if (ret) |
8c4877a4 | 3761 | pr_info("failed registering crash handler\n"); |
2a6f4e49 | 3762 | |
7a291083 | 3763 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3764 | if (ret) { |
8c4877a4 | 3765 | pr_err("failed registering eHEA device driver on ebus\n"); |
21eee2dd | 3766 | goto out2; |
4c3ca4da JBT |
3767 | } |
3768 | ||
3769 | ret = driver_create_file(&ehea_driver.driver, | |
3770 | &driver_attr_capabilities); | |
3771 | if (ret) { | |
8c4877a4 JP |
3772 | pr_err("failed to register capabilities attribute, ret=%d\n", |
3773 | ret); | |
21eee2dd | 3774 | goto out3; |
4c3ca4da | 3775 | } |
7a291083 | 3776 | |
21eee2dd TK |
3777 | return ret; |
3778 | ||
3779 | out3: | |
3780 | ibmebus_unregister_driver(&ehea_driver); | |
3781 | out2: | |
48cfb14f | 3782 | unregister_memory_notifier(&ehea_mem_nb); |
21eee2dd | 3783 | unregister_reboot_notifier(&ehea_reboot_nb); |
c061b18d | 3784 | crash_shutdown_unregister(ehea_crash_handler); |
7a291083 JBT |
3785 | out: |
3786 | return ret; | |
3787 | } | |
3788 | ||
3789 | static void __exit ehea_module_exit(void) | |
3790 | { | |
21eee2dd TK |
3791 | int ret; |
3792 | ||
4c3ca4da | 3793 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3794 | ibmebus_unregister_driver(&ehea_driver); |
2a6f4e49 | 3795 | unregister_reboot_notifier(&ehea_reboot_nb); |
c061b18d | 3796 | ret = crash_shutdown_unregister(ehea_crash_handler); |
21eee2dd | 3797 | if (ret) |
8c4877a4 | 3798 | pr_info("failed unregistering crash handler\n"); |
48cfb14f | 3799 | unregister_memory_notifier(&ehea_mem_nb); |
21eee2dd TK |
3800 | kfree(ehea_fw_handles.arr); |
3801 | kfree(ehea_bcmc_regs.arr); | |
44c82152 | 3802 | ehea_destroy_busmap(); |
7a291083 JBT |
3803 | } |
3804 | ||
3805 | module_init(ehea_module_init); | |
3806 | module_exit(ehea_module_exit); |