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 | ||
29 | #include <linux/in.h> | |
30 | #include <linux/ip.h> | |
31 | #include <linux/tcp.h> | |
32 | #include <linux/udp.h> | |
33 | #include <linux/if.h> | |
34 | #include <linux/list.h> | |
5a0e3ad6 | 35 | #include <linux/slab.h> |
7a291083 | 36 | #include <linux/if_ether.h> |
2a6f4e49 JBT |
37 | #include <linux/notifier.h> |
38 | #include <linux/reboot.h> | |
48cfb14f | 39 | #include <linux/memory.h> |
21eee2dd | 40 | #include <asm/kexec.h> |
06f89edf | 41 | #include <linux/mutex.h> |
2a6f4e49 | 42 | |
7a291083 JBT |
43 | #include <net/ip.h> |
44 | ||
45 | #include "ehea.h" | |
46 | #include "ehea_qmr.h" | |
47 | #include "ehea_phyp.h" | |
48 | ||
49 | ||
50 | MODULE_LICENSE("GPL"); | |
51 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
52 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
53 | MODULE_VERSION(DRV_VERSION); | |
54 | ||
55 | ||
56 | static int msg_level = -1; | |
57 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
58 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
59 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
60 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
508d2b5d DM |
61 | static int use_mcs; |
62 | static int use_lro; | |
d4dc4ec9 | 63 | static int lro_max_aggr = EHEA_LRO_MAX_AGGR; |
18604c54 | 64 | static int num_tx_qps = EHEA_NUM_TX_QP; |
508d2b5d | 65 | static int prop_carrier_state; |
7a291083 JBT |
66 | |
67 | module_param(msg_level, int, 0); | |
68 | module_param(rq1_entries, int, 0); | |
69 | module_param(rq2_entries, int, 0); | |
70 | module_param(rq3_entries, int, 0); | |
71 | module_param(sq_entries, int, 0); | |
8759cf76 | 72 | module_param(prop_carrier_state, int, 0); |
18604c54 | 73 | module_param(use_mcs, int, 0); |
d4dc4ec9 JBT |
74 | module_param(use_lro, int, 0); |
75 | module_param(lro_max_aggr, int, 0); | |
18604c54 | 76 | module_param(num_tx_qps, int, 0); |
7a291083 | 77 | |
18604c54 | 78 | MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
7a291083 | 79 | MODULE_PARM_DESC(msg_level, "msg_level"); |
8759cf76 JBT |
80 | MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
81 | "port to stack. 1:yes, 0:no. Default = 0 "); | |
7a291083 JBT |
82 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
83 | "[2^x - 1], x = [6..14]. Default = " | |
84 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); | |
85 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
86 | "[2^x - 1], x = [6..14]. Default = " | |
87 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); | |
88 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
89 | "[2^x - 1], x = [6..14]. Default = " | |
90 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); | |
91 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
92 | "[2^x - 1], x = [6..14]. Default = " | |
93 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); | |
18072a5b | 94 | MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
7a291083 | 95 | |
d4dc4ec9 JBT |
96 | MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " |
97 | __MODULE_STRING(EHEA_LRO_MAX_AGGR)); | |
98 | MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " | |
99 | "Default = 0"); | |
100 | ||
508d2b5d | 101 | static int port_name_cnt; |
44c82152 | 102 | static LIST_HEAD(adapter_list); |
48e4cc77 | 103 | static unsigned long ehea_driver_flags; |
06f89edf | 104 | static DEFINE_MUTEX(dlpar_mem_lock); |
21eee2dd TK |
105 | struct ehea_fw_handle_array ehea_fw_handles; |
106 | struct ehea_bcmc_reg_array ehea_bcmc_regs; | |
107 | ||
d1dea38d | 108 | |
2dc11581 | 109 | static int __devinit ehea_probe_adapter(struct platform_device *dev, |
d1d25aab | 110 | const struct of_device_id *id); |
d1dea38d | 111 | |
2dc11581 | 112 | static int __devexit ehea_remove(struct platform_device *dev); |
d1dea38d TK |
113 | |
114 | static struct of_device_id ehea_device_table[] = { | |
115 | { | |
116 | .name = "lhea", | |
117 | .compatible = "IBM,lhea", | |
118 | }, | |
119 | {}, | |
120 | }; | |
b0afffe8 | 121 | MODULE_DEVICE_TABLE(of, ehea_device_table); |
d1dea38d | 122 | |
6b08f3ae | 123 | static struct of_platform_driver ehea_driver = { |
4018294b GL |
124 | .driver = { |
125 | .name = "ehea", | |
126 | .owner = THIS_MODULE, | |
127 | .of_match_table = ehea_device_table, | |
128 | }, | |
d1dea38d TK |
129 | .probe = ehea_probe_adapter, |
130 | .remove = ehea_remove, | |
131 | }; | |
132 | ||
508d2b5d DM |
133 | void ehea_dump(void *adr, int len, char *msg) |
134 | { | |
7a291083 JBT |
135 | int x; |
136 | unsigned char *deb = adr; | |
137 | for (x = 0; x < len; x += 16) { | |
cfa969e3 DM |
138 | printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg, |
139 | deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8])); | |
7a291083 JBT |
140 | deb += 16; |
141 | } | |
142 | } | |
143 | ||
2f69ae01 JBT |
144 | void ehea_schedule_port_reset(struct ehea_port *port) |
145 | { | |
146 | if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags)) | |
147 | schedule_work(&port->reset_task); | |
148 | } | |
149 | ||
21eee2dd TK |
150 | static void ehea_update_firmware_handles(void) |
151 | { | |
152 | struct ehea_fw_handle_entry *arr = NULL; | |
153 | struct ehea_adapter *adapter; | |
154 | int num_adapters = 0; | |
155 | int num_ports = 0; | |
156 | int num_portres = 0; | |
157 | int i = 0; | |
158 | int num_fw_handles, k, l; | |
159 | ||
160 | /* Determine number of handles */ | |
52e21b1b JBT |
161 | mutex_lock(&ehea_fw_handles.lock); |
162 | ||
21eee2dd TK |
163 | list_for_each_entry(adapter, &adapter_list, list) { |
164 | num_adapters++; | |
165 | ||
166 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
167 | struct ehea_port *port = adapter->port[k]; | |
168 | ||
169 | if (!port || (port->state != EHEA_PORT_UP)) | |
170 | continue; | |
171 | ||
172 | num_ports++; | |
173 | num_portres += port->num_def_qps + port->num_add_tx_qps; | |
174 | } | |
175 | } | |
176 | ||
177 | num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES + | |
178 | num_ports * EHEA_NUM_PORT_FW_HANDLES + | |
179 | num_portres * EHEA_NUM_PORTRES_FW_HANDLES; | |
180 | ||
181 | if (num_fw_handles) { | |
baeb2ffa | 182 | arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL); |
21eee2dd | 183 | if (!arr) |
52e21b1b | 184 | goto out; /* Keep the existing array */ |
21eee2dd TK |
185 | } else |
186 | goto out_update; | |
187 | ||
188 | list_for_each_entry(adapter, &adapter_list, list) { | |
52e21b1b JBT |
189 | if (num_adapters == 0) |
190 | break; | |
191 | ||
21eee2dd TK |
192 | for (k = 0; k < EHEA_MAX_PORTS; k++) { |
193 | struct ehea_port *port = adapter->port[k]; | |
194 | ||
8e95a202 JP |
195 | if (!port || (port->state != EHEA_PORT_UP) || |
196 | (num_ports == 0)) | |
21eee2dd TK |
197 | continue; |
198 | ||
199 | for (l = 0; | |
200 | l < port->num_def_qps + port->num_add_tx_qps; | |
201 | l++) { | |
202 | struct ehea_port_res *pr = &port->port_res[l]; | |
203 | ||
204 | arr[i].adh = adapter->handle; | |
205 | arr[i++].fwh = pr->qp->fw_handle; | |
206 | arr[i].adh = adapter->handle; | |
207 | arr[i++].fwh = pr->send_cq->fw_handle; | |
208 | arr[i].adh = adapter->handle; | |
209 | arr[i++].fwh = pr->recv_cq->fw_handle; | |
210 | arr[i].adh = adapter->handle; | |
211 | arr[i++].fwh = pr->eq->fw_handle; | |
212 | arr[i].adh = adapter->handle; | |
213 | arr[i++].fwh = pr->send_mr.handle; | |
214 | arr[i].adh = adapter->handle; | |
215 | arr[i++].fwh = pr->recv_mr.handle; | |
216 | } | |
217 | arr[i].adh = adapter->handle; | |
218 | arr[i++].fwh = port->qp_eq->fw_handle; | |
52e21b1b | 219 | num_ports--; |
21eee2dd TK |
220 | } |
221 | ||
222 | arr[i].adh = adapter->handle; | |
223 | arr[i++].fwh = adapter->neq->fw_handle; | |
224 | ||
225 | if (adapter->mr.handle) { | |
226 | arr[i].adh = adapter->handle; | |
227 | arr[i++].fwh = adapter->mr.handle; | |
228 | } | |
52e21b1b | 229 | num_adapters--; |
21eee2dd TK |
230 | } |
231 | ||
232 | out_update: | |
233 | kfree(ehea_fw_handles.arr); | |
234 | ehea_fw_handles.arr = arr; | |
235 | ehea_fw_handles.num_entries = i; | |
52e21b1b JBT |
236 | out: |
237 | mutex_unlock(&ehea_fw_handles.lock); | |
21eee2dd TK |
238 | } |
239 | ||
240 | static void ehea_update_bcmc_registrations(void) | |
241 | { | |
52e21b1b | 242 | unsigned long flags; |
21eee2dd TK |
243 | struct ehea_bcmc_reg_entry *arr = NULL; |
244 | struct ehea_adapter *adapter; | |
245 | struct ehea_mc_list *mc_entry; | |
246 | int num_registrations = 0; | |
247 | int i = 0; | |
248 | int k; | |
249 | ||
52e21b1b JBT |
250 | spin_lock_irqsave(&ehea_bcmc_regs.lock, flags); |
251 | ||
21eee2dd TK |
252 | /* Determine number of registrations */ |
253 | list_for_each_entry(adapter, &adapter_list, list) | |
254 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
255 | struct ehea_port *port = adapter->port[k]; | |
256 | ||
257 | if (!port || (port->state != EHEA_PORT_UP)) | |
258 | continue; | |
259 | ||
260 | num_registrations += 2; /* Broadcast registrations */ | |
261 | ||
262 | list_for_each_entry(mc_entry, &port->mc_list->list,list) | |
263 | num_registrations += 2; | |
264 | } | |
265 | ||
266 | if (num_registrations) { | |
baeb2ffa | 267 | arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC); |
21eee2dd | 268 | if (!arr) |
52e21b1b | 269 | goto out; /* Keep the existing array */ |
21eee2dd TK |
270 | } else |
271 | goto out_update; | |
272 | ||
273 | list_for_each_entry(adapter, &adapter_list, list) { | |
274 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
275 | struct ehea_port *port = adapter->port[k]; | |
276 | ||
277 | if (!port || (port->state != EHEA_PORT_UP)) | |
278 | continue; | |
279 | ||
52e21b1b JBT |
280 | if (num_registrations == 0) |
281 | goto out_update; | |
282 | ||
21eee2dd TK |
283 | arr[i].adh = adapter->handle; |
284 | arr[i].port_id = port->logical_port_id; | |
285 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
286 | EHEA_BCMC_UNTAGGED; | |
287 | arr[i++].macaddr = port->mac_addr; | |
288 | ||
289 | arr[i].adh = adapter->handle; | |
290 | arr[i].port_id = port->logical_port_id; | |
291 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
292 | EHEA_BCMC_VLANID_ALL; | |
293 | arr[i++].macaddr = port->mac_addr; | |
52e21b1b | 294 | num_registrations -= 2; |
21eee2dd TK |
295 | |
296 | list_for_each_entry(mc_entry, | |
297 | &port->mc_list->list, list) { | |
52e21b1b JBT |
298 | if (num_registrations == 0) |
299 | goto out_update; | |
300 | ||
21eee2dd TK |
301 | arr[i].adh = adapter->handle; |
302 | arr[i].port_id = port->logical_port_id; | |
303 | arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | | |
304 | EHEA_BCMC_MULTICAST | | |
305 | EHEA_BCMC_UNTAGGED; | |
306 | arr[i++].macaddr = mc_entry->macaddr; | |
307 | ||
308 | arr[i].adh = adapter->handle; | |
309 | arr[i].port_id = port->logical_port_id; | |
310 | arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | | |
311 | EHEA_BCMC_MULTICAST | | |
312 | EHEA_BCMC_VLANID_ALL; | |
313 | arr[i++].macaddr = mc_entry->macaddr; | |
52e21b1b | 314 | num_registrations -= 2; |
21eee2dd TK |
315 | } |
316 | } | |
317 | } | |
318 | ||
319 | out_update: | |
320 | kfree(ehea_bcmc_regs.arr); | |
321 | ehea_bcmc_regs.arr = arr; | |
322 | ehea_bcmc_regs.num_entries = i; | |
52e21b1b JBT |
323 | out: |
324 | spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags); | |
21eee2dd TK |
325 | } |
326 | ||
7a291083 JBT |
327 | static struct net_device_stats *ehea_get_stats(struct net_device *dev) |
328 | { | |
329 | struct ehea_port *port = netdev_priv(dev); | |
330 | struct net_device_stats *stats = &port->stats; | |
331 | struct hcp_ehea_port_cb2 *cb2; | |
ce45b873 | 332 | u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0; |
7a291083 JBT |
333 | int i; |
334 | ||
335 | memset(stats, 0, sizeof(*stats)); | |
336 | ||
3d8009c7 | 337 | cb2 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 338 | if (!cb2) { |
cfa969e3 | 339 | ehea_error("no mem for cb2"); |
7a291083 JBT |
340 | goto out; |
341 | } | |
342 | ||
343 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
344 | port->logical_port_id, | |
345 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
346 | if (hret != H_SUCCESS) { | |
cfa969e3 | 347 | ehea_error("query_ehea_port failed"); |
7a291083 JBT |
348 | goto out_herr; |
349 | } | |
350 | ||
351 | if (netif_msg_hw(port)) | |
352 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
353 | ||
354 | rx_packets = 0; | |
ce45b873 | 355 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 | 356 | rx_packets += port->port_res[i].rx_packets; |
ce45b873 BL |
357 | rx_bytes += port->port_res[i].rx_bytes; |
358 | } | |
7a291083 | 359 | |
7393b87c | 360 | tx_packets = 0; |
ce45b873 | 361 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
7393b87c | 362 | tx_packets += port->port_res[i].tx_packets; |
ce45b873 BL |
363 | tx_bytes += port->port_res[i].tx_bytes; |
364 | } | |
7393b87c TK |
365 | |
366 | stats->tx_packets = tx_packets; | |
7a291083 JBT |
367 | stats->multicast = cb2->rxmcp; |
368 | stats->rx_errors = cb2->rxuerr; | |
ce45b873 BL |
369 | stats->rx_bytes = rx_bytes; |
370 | stats->tx_bytes = tx_bytes; | |
7a291083 JBT |
371 | stats->rx_packets = rx_packets; |
372 | ||
373 | out_herr: | |
3faf2693 | 374 | free_page((unsigned long)cb2); |
7a291083 JBT |
375 | out: |
376 | return stats; | |
377 | } | |
378 | ||
379 | static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) | |
380 | { | |
381 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
382 | struct net_device *dev = pr->port->netdev; | |
383 | int max_index_mask = pr->rq1_skba.len - 1; | |
2c69448b JBT |
384 | int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
385 | int adder = 0; | |
7a291083 JBT |
386 | int i; |
387 | ||
2c69448b JBT |
388 | pr->rq1_skba.os_skbs = 0; |
389 | ||
390 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { | |
44fb3126 TK |
391 | if (nr_of_wqes > 0) |
392 | pr->rq1_skba.index = index; | |
2c69448b | 393 | pr->rq1_skba.os_skbs = fill_wqes; |
7a291083 | 394 | return; |
2c69448b | 395 | } |
7a291083 | 396 | |
2c69448b | 397 | for (i = 0; i < fill_wqes; i++) { |
7a291083 JBT |
398 | if (!skb_arr_rq1[index]) { |
399 | skb_arr_rq1[index] = netdev_alloc_skb(dev, | |
400 | EHEA_L_PKT_SIZE); | |
401 | if (!skb_arr_rq1[index]) { | |
5c7e57f7 | 402 | ehea_info("Unable to allocate enough skb in the array\n"); |
2c69448b | 403 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
404 | break; |
405 | } | |
406 | } | |
407 | index--; | |
408 | index &= max_index_mask; | |
2c69448b | 409 | adder++; |
7a291083 | 410 | } |
2c69448b JBT |
411 | |
412 | if (adder == 0) | |
413 | return; | |
414 | ||
7a291083 | 415 | /* Ring doorbell */ |
2c69448b | 416 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
417 | } |
418 | ||
e2878806 | 419 | static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) |
7a291083 | 420 | { |
7a291083 JBT |
421 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
422 | struct net_device *dev = pr->port->netdev; | |
423 | int i; | |
424 | ||
5c7e57f7 BL |
425 | if (nr_rq1a > pr->rq1_skba.len) { |
426 | ehea_error("NR_RQ1A bigger than skb array len\n"); | |
427 | return; | |
428 | } | |
429 | ||
430 | for (i = 0; i < nr_rq1a; i++) { | |
7a291083 | 431 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); |
5c7e57f7 BL |
432 | if (!skb_arr_rq1[i]) { |
433 | ehea_info("No enough memory to allocate skb array\n"); | |
e2878806 | 434 | break; |
5c7e57f7 | 435 | } |
7a291083 JBT |
436 | } |
437 | /* Ring doorbell */ | |
5c7e57f7 | 438 | ehea_update_rq1a(pr->qp, i); |
7a291083 JBT |
439 | } |
440 | ||
441 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
442 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
443 | int num_wqes, int wqe_type, int packet_size) | |
444 | { | |
445 | struct net_device *dev = pr->port->netdev; | |
446 | struct ehea_qp *qp = pr->qp; | |
447 | struct sk_buff **skb_arr = q_skba->arr; | |
448 | struct ehea_rwqe *rwqe; | |
449 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 450 | int adder = 0; |
7a291083 JBT |
451 | int ret = 0; |
452 | ||
453 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 454 | q_skba->os_skbs = 0; |
7a291083 | 455 | |
2c69448b JBT |
456 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
457 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 458 | return ret; |
2c69448b | 459 | } |
7a291083 JBT |
460 | |
461 | index = q_skba->index; | |
462 | max_index_mask = q_skba->len - 1; | |
463 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 464 | u64 tmp_addr; |
89d71a66 ED |
465 | struct sk_buff *skb; |
466 | ||
467 | skb = netdev_alloc_skb_ip_align(dev, packet_size); | |
7a291083 | 468 | if (!skb) { |
7a291083 | 469 | q_skba->os_skbs = fill_wqes - i; |
e2878806 | 470 | if (q_skba->os_skbs == q_skba->len - 2) { |
cfa969e3 DM |
471 | ehea_info("%s: rq%i ran dry - no mem for skb", |
472 | pr->port->netdev->name, rq_nr); | |
e2878806 TK |
473 | ret = -ENOMEM; |
474 | } | |
7a291083 JBT |
475 | break; |
476 | } | |
7a291083 JBT |
477 | |
478 | skb_arr[index] = skb; | |
2c69448b JBT |
479 | tmp_addr = ehea_map_vaddr(skb->data); |
480 | if (tmp_addr == -1) { | |
481 | dev_kfree_skb(skb); | |
482 | q_skba->os_skbs = fill_wqes - i; | |
483 | ret = 0; | |
484 | break; | |
485 | } | |
7a291083 JBT |
486 | |
487 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
488 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 489 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 490 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 491 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
492 | rwqe->sg_list[0].len = packet_size; |
493 | rwqe->data_segments = 1; | |
494 | ||
495 | index++; | |
496 | index &= max_index_mask; | |
2c69448b | 497 | adder++; |
7a291083 | 498 | } |
44c82152 | 499 | |
7a291083 | 500 | q_skba->index = index; |
2c69448b JBT |
501 | if (adder == 0) |
502 | goto out; | |
7a291083 JBT |
503 | |
504 | /* Ring doorbell */ | |
505 | iosync(); | |
506 | if (rq_nr == 2) | |
2c69448b | 507 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 508 | else |
2c69448b | 509 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 510 | out: |
7a291083 JBT |
511 | return ret; |
512 | } | |
513 | ||
514 | ||
515 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
516 | { | |
517 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
518 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
89d71a66 | 519 | EHEA_RQ2_PKT_SIZE); |
7a291083 JBT |
520 | } |
521 | ||
522 | ||
523 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
524 | { | |
525 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
526 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
89d71a66 | 527 | EHEA_MAX_PACKET_SIZE); |
7a291083 JBT |
528 | } |
529 | ||
530 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
531 | { | |
532 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
533 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
534 | return 0; | |
535 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
536 | (cqe->header_length == 0)) | |
537 | return 0; | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | static inline void ehea_fill_skb(struct net_device *dev, | |
542 | struct sk_buff *skb, struct ehea_cqe *cqe) | |
543 | { | |
544 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
545 | ||
546 | skb_put(skb, length); | |
7a291083 | 547 | skb->protocol = eth_type_trans(skb, dev); |
71085ce8 BL |
548 | |
549 | /* The packet was not an IPV4 packet so a complemented checksum was | |
550 | calculated. The value is found in the Internet Checksum field. */ | |
551 | if (cqe->status & EHEA_CQE_BLIND_CKSUM) { | |
552 | skb->ip_summed = CHECKSUM_COMPLETE; | |
553 | skb->csum = csum_unfold(~cqe->inet_checksum_value); | |
554 | } else | |
555 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
7a291083 JBT |
556 | } |
557 | ||
558 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
559 | int arr_len, | |
560 | struct ehea_cqe *cqe) | |
561 | { | |
562 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
563 | struct sk_buff *skb; | |
564 | void *pref; | |
565 | int x; | |
566 | ||
567 | x = skb_index + 1; | |
568 | x &= (arr_len - 1); | |
569 | ||
570 | pref = skb_array[x]; | |
0b2febf3 HH |
571 | if (pref) { |
572 | prefetchw(pref); | |
573 | prefetchw(pref + EHEA_CACHE_LINE); | |
574 | ||
575 | pref = (skb_array[x]->data); | |
576 | prefetch(pref); | |
577 | prefetch(pref + EHEA_CACHE_LINE); | |
578 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
579 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
580 | } | |
581 | ||
7a291083 JBT |
582 | skb = skb_array[skb_index]; |
583 | skb_array[skb_index] = NULL; | |
584 | return skb; | |
585 | } | |
586 | ||
587 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
588 | int arr_len, int wqe_index) | |
589 | { | |
590 | struct sk_buff *skb; | |
591 | void *pref; | |
592 | int x; | |
593 | ||
594 | x = wqe_index + 1; | |
595 | x &= (arr_len - 1); | |
596 | ||
597 | pref = skb_array[x]; | |
0b2febf3 HH |
598 | if (pref) { |
599 | prefetchw(pref); | |
600 | prefetchw(pref + EHEA_CACHE_LINE); | |
7a291083 | 601 | |
0b2febf3 HH |
602 | pref = (skb_array[x]->data); |
603 | prefetchw(pref); | |
604 | prefetchw(pref + EHEA_CACHE_LINE); | |
605 | } | |
7a291083 JBT |
606 | |
607 | skb = skb_array[wqe_index]; | |
608 | skb_array[wqe_index] = NULL; | |
609 | return skb; | |
610 | } | |
611 | ||
612 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
613 | struct ehea_cqe *cqe, int *processed_rq2, | |
614 | int *processed_rq3) | |
615 | { | |
616 | struct sk_buff *skb; | |
617 | ||
acbddb59 JBT |
618 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
619 | pr->p_stats.err_tcp_cksum++; | |
620 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
621 | pr->p_stats.err_ip_cksum++; | |
622 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
623 | pr->p_stats.err_frame_crc++; | |
624 | ||
7a291083 JBT |
625 | if (rq == 2) { |
626 | *processed_rq2 += 1; | |
627 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
628 | dev_kfree_skb(skb); | |
629 | } else if (rq == 3) { | |
630 | *processed_rq3 += 1; | |
631 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
632 | dev_kfree_skb(skb); | |
633 | } | |
634 | ||
635 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
58dd8258 | 636 | if (netif_msg_rx_err(pr->port)) { |
cfa969e3 DM |
637 | ehea_error("Critical receive error for QP %d. " |
638 | "Resetting port.", pr->qp->init_attr.qp_nr); | |
58dd8258 TK |
639 | ehea_dump(cqe, sizeof(*cqe), "CQE"); |
640 | } | |
2f69ae01 | 641 | ehea_schedule_port_reset(pr->port); |
7a291083 JBT |
642 | return 1; |
643 | } | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
d4dc4ec9 JBT |
648 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
649 | void **tcph, u64 *hdr_flags, void *priv) | |
650 | { | |
651 | struct ehea_cqe *cqe = priv; | |
652 | unsigned int ip_len; | |
653 | struct iphdr *iph; | |
654 | ||
655 | /* non tcp/udp packets */ | |
656 | if (!cqe->header_length) | |
657 | return -1; | |
658 | ||
659 | /* non tcp packet */ | |
660 | skb_reset_network_header(skb); | |
661 | iph = ip_hdr(skb); | |
662 | if (iph->protocol != IPPROTO_TCP) | |
663 | return -1; | |
664 | ||
665 | ip_len = ip_hdrlen(skb); | |
666 | skb_set_transport_header(skb, ip_len); | |
667 | *tcph = tcp_hdr(skb); | |
668 | ||
669 | /* check if ip header and tcp header are complete */ | |
3ff2cd23 | 670 | if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb)) |
d4dc4ec9 JBT |
671 | return -1; |
672 | ||
673 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
674 | *iphdr = iph; | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
679 | static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, | |
680 | struct sk_buff *skb) | |
681 | { | |
8e95a202 JP |
682 | int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) && |
683 | pr->port->vgrp); | |
d4dc4ec9 | 684 | |
c7757fdb | 685 | if (skb->dev->features & NETIF_F_LRO) { |
d4dc4ec9 JBT |
686 | if (vlan_extracted) |
687 | lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, | |
688 | pr->port->vgrp, | |
689 | cqe->vlan_tag, | |
690 | cqe); | |
691 | else | |
692 | lro_receive_skb(&pr->lro_mgr, skb, cqe); | |
693 | } else { | |
694 | if (vlan_extracted) | |
695 | vlan_hwaccel_receive_skb(skb, pr->port->vgrp, | |
696 | cqe->vlan_tag); | |
697 | else | |
698 | netif_receive_skb(skb); | |
699 | } | |
700 | } | |
701 | ||
bea3348e SH |
702 | static int ehea_proc_rwqes(struct net_device *dev, |
703 | struct ehea_port_res *pr, | |
704 | int budget) | |
7a291083 | 705 | { |
18604c54 | 706 | struct ehea_port *port = pr->port; |
7a291083 JBT |
707 | struct ehea_qp *qp = pr->qp; |
708 | struct ehea_cqe *cqe; | |
709 | struct sk_buff *skb; | |
710 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
711 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
712 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
713 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
714 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
715 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
716 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
ce45b873 | 717 | u64 processed_bytes = 0; |
bea3348e | 718 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
719 | |
720 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
721 | last_wqe_index = 0; | |
7a291083 | 722 | |
7a291083 | 723 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 724 | while ((processed < budget) && cqe) { |
7a291083 JBT |
725 | ehea_inc_rq1(qp); |
726 | processed_rq1++; | |
727 | processed++; | |
7a291083 JBT |
728 | if (netif_msg_rx_status(port)) |
729 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
730 | ||
731 | last_wqe_index = wqe_index; | |
732 | rmb(); | |
733 | if (!ehea_check_cqe(cqe, &rq)) { | |
508d2b5d DM |
734 | if (rq == 1) { |
735 | /* LL RQ1 */ | |
7a291083 JBT |
736 | skb = get_skb_by_index_ll(skb_arr_rq1, |
737 | skb_arr_rq1_len, | |
738 | wqe_index); | |
739 | if (unlikely(!skb)) { | |
cfa969e3 DM |
740 | if (netif_msg_rx_err(port)) |
741 | ehea_error("LL rq1: skb=NULL"); | |
18604c54 | 742 | |
bea3348e | 743 | skb = netdev_alloc_skb(dev, |
7a291083 | 744 | EHEA_L_PKT_SIZE); |
5c7e57f7 BL |
745 | if (!skb) { |
746 | ehea_info("Not enough memory to allocate skb\n"); | |
7a291083 | 747 | break; |
5c7e57f7 | 748 | } |
7a291083 | 749 | } |
508d2b5d | 750 | skb_copy_to_linear_data(skb, ((char *)cqe) + 64, |
d1d25aab | 751 | cqe->num_bytes_transfered - 4); |
bea3348e | 752 | ehea_fill_skb(dev, skb, cqe); |
508d2b5d DM |
753 | } else if (rq == 2) { |
754 | /* RQ2 */ | |
7a291083 JBT |
755 | skb = get_skb_by_index(skb_arr_rq2, |
756 | skb_arr_rq2_len, cqe); | |
757 | if (unlikely(!skb)) { | |
cfa969e3 DM |
758 | if (netif_msg_rx_err(port)) |
759 | ehea_error("rq2: skb=NULL"); | |
7a291083 JBT |
760 | break; |
761 | } | |
bea3348e | 762 | ehea_fill_skb(dev, skb, cqe); |
7a291083 | 763 | processed_rq2++; |
508d2b5d DM |
764 | } else { |
765 | /* RQ3 */ | |
7a291083 JBT |
766 | skb = get_skb_by_index(skb_arr_rq3, |
767 | skb_arr_rq3_len, cqe); | |
768 | if (unlikely(!skb)) { | |
cfa969e3 DM |
769 | if (netif_msg_rx_err(port)) |
770 | ehea_error("rq3: skb=NULL"); | |
7a291083 JBT |
771 | break; |
772 | } | |
bea3348e | 773 | ehea_fill_skb(dev, skb, cqe); |
7a291083 JBT |
774 | processed_rq3++; |
775 | } | |
776 | ||
ce45b873 | 777 | processed_bytes += skb->len; |
d4dc4ec9 | 778 | ehea_proc_skb(pr, cqe, skb); |
18604c54 | 779 | } else { |
acbddb59 | 780 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
781 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
782 | &processed_rq2, | |
783 | &processed_rq3); | |
784 | if (port_reset) | |
785 | break; | |
786 | } | |
787 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
788 | } | |
c7757fdb | 789 | if (dev->features & NETIF_F_LRO) |
d4dc4ec9 | 790 | lro_flush_all(&pr->lro_mgr); |
7a291083 | 791 | |
7a291083 | 792 | pr->rx_packets += processed; |
ce45b873 | 793 | pr->rx_bytes += processed_bytes; |
7a291083 JBT |
794 | |
795 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
796 | ehea_refill_rq2(pr, processed_rq2); | |
797 | ehea_refill_rq3(pr, processed_rq3); | |
798 | ||
bea3348e | 799 | return processed; |
7a291083 JBT |
800 | } |
801 | ||
2928db4c AD |
802 | #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull |
803 | ||
804 | static void reset_sq_restart_flag(struct ehea_port *port) | |
805 | { | |
806 | int i; | |
807 | ||
808 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
809 | struct ehea_port_res *pr = &port->port_res[i]; | |
810 | pr->sq_restart_flag = 0; | |
811 | } | |
a8bb69f7 | 812 | wake_up(&port->restart_wq); |
2928db4c AD |
813 | } |
814 | ||
815 | static void check_sqs(struct ehea_port *port) | |
816 | { | |
817 | struct ehea_swqe *swqe; | |
818 | int swqe_index; | |
819 | int i, k; | |
820 | ||
821 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
822 | struct ehea_port_res *pr = &port->port_res[i]; | |
a8bb69f7 | 823 | int ret; |
2928db4c AD |
824 | k = 0; |
825 | swqe = ehea_get_swqe(pr->qp, &swqe_index); | |
826 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
827 | atomic_dec(&pr->swqe_avail); | |
828 | ||
829 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
830 | swqe->wr_id = SWQE_RESTART_CHECK; | |
831 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
832 | swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT; | |
833 | swqe->immediate_data_length = 80; | |
834 | ||
835 | ehea_post_swqe(pr->qp, swqe); | |
836 | ||
a8bb69f7 BL |
837 | ret = wait_event_timeout(port->restart_wq, |
838 | pr->sq_restart_flag == 0, | |
839 | msecs_to_jiffies(100)); | |
840 | ||
841 | if (!ret) { | |
cfa969e3 | 842 | ehea_error("HW/SW queues out of sync"); |
a8bb69f7 BL |
843 | ehea_schedule_port_reset(pr->port); |
844 | return; | |
2928db4c AD |
845 | } |
846 | } | |
2928db4c AD |
847 | } |
848 | ||
849 | ||
18604c54 | 850 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 851 | { |
acbddb59 | 852 | struct sk_buff *skb; |
7a291083 JBT |
853 | struct ehea_cq *send_cq = pr->send_cq; |
854 | struct ehea_cqe *cqe; | |
18604c54 | 855 | int quota = my_quota; |
7a291083 JBT |
856 | int cqe_counter = 0; |
857 | int swqe_av = 0; | |
acbddb59 | 858 | int index; |
7a291083 JBT |
859 | unsigned long flags; |
860 | ||
18604c54 | 861 | cqe = ehea_poll_cq(send_cq); |
508d2b5d | 862 | while (cqe && (quota > 0)) { |
18604c54 JBT |
863 | ehea_inc_cq(send_cq); |
864 | ||
7a291083 JBT |
865 | cqe_counter++; |
866 | rmb(); | |
2928db4c AD |
867 | |
868 | if (cqe->wr_id == SWQE_RESTART_CHECK) { | |
869 | pr->sq_restart_flag = 1; | |
870 | swqe_av++; | |
871 | break; | |
872 | } | |
873 | ||
7a291083 | 874 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { |
cfa969e3 DM |
875 | ehea_error("Bad send completion status=0x%04X", |
876 | cqe->status); | |
ea96ceac | 877 | |
7a291083 JBT |
878 | if (netif_msg_tx_err(pr->port)) |
879 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
ea96ceac TK |
880 | |
881 | if (cqe->status & EHEA_CQE_STAT_RESET_MASK) { | |
cfa969e3 | 882 | ehea_error("Resetting port"); |
ea96ceac TK |
883 | ehea_schedule_port_reset(pr->port); |
884 | break; | |
885 | } | |
7a291083 JBT |
886 | } |
887 | ||
888 | if (netif_msg_tx_done(pr->port)) | |
889 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
890 | ||
891 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
892 | == EHEA_SWQE2_TYPE)) { |
893 | ||
894 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
895 | skb = pr->sq_skba.arr[index]; | |
896 | dev_kfree_skb(skb); | |
897 | pr->sq_skba.arr[index] = NULL; | |
898 | } | |
7a291083 JBT |
899 | |
900 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
901 | quota--; | |
18604c54 JBT |
902 | |
903 | cqe = ehea_poll_cq(send_cq); | |
ee289b64 | 904 | } |
7a291083 JBT |
905 | |
906 | ehea_update_feca(send_cq, cqe_counter); | |
907 | atomic_add(swqe_av, &pr->swqe_avail); | |
908 | ||
909 | spin_lock_irqsave(&pr->netif_queue, flags); | |
18604c54 | 910 | |
7a291083 JBT |
911 | if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
912 | >= pr->swqe_refill_th)) { | |
913 | netif_wake_queue(pr->port->netdev); | |
914 | pr->queue_stopped = 0; | |
915 | } | |
916 | spin_unlock_irqrestore(&pr->netif_queue, flags); | |
5b27d427 | 917 | wake_up(&pr->port->swqe_avail_wq); |
7a291083 | 918 | |
18604c54 | 919 | return cqe; |
7a291083 JBT |
920 | } |
921 | ||
18604c54 | 922 | #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
bea3348e | 923 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 924 | |
bea3348e | 925 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 926 | { |
508d2b5d DM |
927 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, |
928 | napi); | |
bea3348e | 929 | struct net_device *dev = pr->port->netdev; |
18604c54 JBT |
930 | struct ehea_cqe *cqe; |
931 | struct ehea_cqe *cqe_skb = NULL; | |
932 | int force_irq, wqe_index; | |
bea3348e | 933 | int rx = 0; |
18604c54 JBT |
934 | |
935 | force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); | |
bea3348e SH |
936 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
937 | ||
938 | if (!force_irq) | |
939 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
18604c54 | 940 | |
bea3348e | 941 | while ((rx != budget) || force_irq) { |
18604c54 | 942 | pr->poll_counter = 0; |
bea3348e | 943 | force_irq = 0; |
288379f0 | 944 | napi_complete(napi); |
18604c54 JBT |
945 | ehea_reset_cq_ep(pr->recv_cq); |
946 | ehea_reset_cq_ep(pr->send_cq); | |
947 | ehea_reset_cq_n1(pr->recv_cq); | |
948 | ehea_reset_cq_n1(pr->send_cq); | |
a91fb143 | 949 | rmb(); |
18604c54 JBT |
950 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); |
951 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
952 | ||
e542aa6b | 953 | if (!cqe && !cqe_skb) |
bea3348e | 954 | return rx; |
18604c54 | 955 | |
288379f0 | 956 | if (!napi_reschedule(napi)) |
bea3348e | 957 | return rx; |
18604c54 | 958 | |
bea3348e SH |
959 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
960 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
961 | } | |
e542aa6b | 962 | |
bea3348e SH |
963 | pr->poll_counter++; |
964 | return rx; | |
7a291083 JBT |
965 | } |
966 | ||
8d22c971 JBT |
967 | #ifdef CONFIG_NET_POLL_CONTROLLER |
968 | static void ehea_netpoll(struct net_device *dev) | |
969 | { | |
970 | struct ehea_port *port = netdev_priv(dev); | |
bea3348e | 971 | int i; |
8d22c971 | 972 | |
bea3348e | 973 | for (i = 0; i < port->num_def_qps; i++) |
288379f0 | 974 | napi_schedule(&port->port_res[i].napi); |
8d22c971 JBT |
975 | } |
976 | #endif | |
977 | ||
7d12e780 | 978 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
979 | { |
980 | struct ehea_port_res *pr = param; | |
18604c54 | 981 | |
288379f0 | 982 | napi_schedule(&pr->napi); |
18604c54 | 983 | |
7a291083 JBT |
984 | return IRQ_HANDLED; |
985 | } | |
986 | ||
7d12e780 | 987 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
988 | { |
989 | struct ehea_port *port = param; | |
990 | struct ehea_eqe *eqe; | |
d2db9eea | 991 | struct ehea_qp *qp; |
7a291083 | 992 | u32 qp_token; |
ea96ceac TK |
993 | u64 resource_type, aer, aerr; |
994 | int reset_port = 0; | |
7a291083 JBT |
995 | |
996 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 997 | |
7a291083 | 998 | while (eqe) { |
7a291083 | 999 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
cfa969e3 DM |
1000 | ehea_error("QP aff_err: entry=0x%llx, token=0x%x", |
1001 | eqe->entry, qp_token); | |
d2db9eea JBT |
1002 | |
1003 | qp = port->port_res[qp_token].qp; | |
ea96ceac TK |
1004 | |
1005 | resource_type = ehea_error_data(port->adapter, qp->fw_handle, | |
1006 | &aer, &aerr); | |
1007 | ||
1008 | if (resource_type == EHEA_AER_RESTYPE_QP) { | |
1009 | if ((aer & EHEA_AER_RESET_MASK) || | |
1010 | (aerr & EHEA_AERR_RESET_MASK)) | |
1011 | reset_port = 1; | |
1012 | } else | |
1013 | reset_port = 1; /* Reset in case of CQ or EQ error */ | |
1014 | ||
bb3a6449 | 1015 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
1016 | } |
1017 | ||
ea96ceac | 1018 | if (reset_port) { |
cfa969e3 | 1019 | ehea_error("Resetting port"); |
ea96ceac TK |
1020 | ehea_schedule_port_reset(port); |
1021 | } | |
d2db9eea | 1022 | |
7a291083 JBT |
1023 | return IRQ_HANDLED; |
1024 | } | |
1025 | ||
1026 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
1027 | int logical_port) | |
1028 | { | |
1029 | int i; | |
1030 | ||
1acf2318 | 1031 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 1032 | if (adapter->port[i]) |
d1d25aab | 1033 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 1034 | return adapter->port[i]; |
7a291083 JBT |
1035 | return NULL; |
1036 | } | |
1037 | ||
1038 | int ehea_sense_port_attr(struct ehea_port *port) | |
1039 | { | |
1040 | int ret; | |
1041 | u64 hret; | |
1042 | struct hcp_ehea_port_cb0 *cb0; | |
1043 | ||
508d2b5d | 1044 | /* may be called via ehea_neq_tasklet() */ |
3faf2693 | 1045 | cb0 = (void *)get_zeroed_page(GFP_ATOMIC); |
508d2b5d | 1046 | if (!cb0) { |
cfa969e3 | 1047 | ehea_error("no mem for cb0"); |
7a291083 JBT |
1048 | ret = -ENOMEM; |
1049 | goto out; | |
1050 | } | |
1051 | ||
1052 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
1053 | port->logical_port_id, H_PORT_CB0, | |
1054 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
1055 | cb0); | |
1056 | if (hret != H_SUCCESS) { | |
1057 | ret = -EIO; | |
1058 | goto out_free; | |
1059 | } | |
1060 | ||
1061 | /* MAC address */ | |
1062 | port->mac_addr = cb0->port_mac_addr << 16; | |
1063 | ||
508d2b5d | 1064 | if (!is_valid_ether_addr((u8 *)&port->mac_addr)) { |
7a291083 JBT |
1065 | ret = -EADDRNOTAVAIL; |
1066 | goto out_free; | |
1067 | } | |
1068 | ||
1069 | /* Port speed */ | |
1070 | switch (cb0->port_speed) { | |
1071 | case H_SPEED_10M_H: | |
1072 | port->port_speed = EHEA_SPEED_10M; | |
1073 | port->full_duplex = 0; | |
1074 | break; | |
1075 | case H_SPEED_10M_F: | |
1076 | port->port_speed = EHEA_SPEED_10M; | |
1077 | port->full_duplex = 1; | |
1078 | break; | |
1079 | case H_SPEED_100M_H: | |
1080 | port->port_speed = EHEA_SPEED_100M; | |
1081 | port->full_duplex = 0; | |
1082 | break; | |
1083 | case H_SPEED_100M_F: | |
1084 | port->port_speed = EHEA_SPEED_100M; | |
1085 | port->full_duplex = 1; | |
1086 | break; | |
1087 | case H_SPEED_1G_F: | |
1088 | port->port_speed = EHEA_SPEED_1G; | |
1089 | port->full_duplex = 1; | |
1090 | break; | |
1091 | case H_SPEED_10G_F: | |
1092 | port->port_speed = EHEA_SPEED_10G; | |
1093 | port->full_duplex = 1; | |
1094 | break; | |
1095 | default: | |
1096 | port->port_speed = 0; | |
1097 | port->full_duplex = 0; | |
1098 | break; | |
1099 | } | |
1100 | ||
e919b593 | 1101 | port->autoneg = 1; |
18604c54 | 1102 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 1103 | |
7a291083 | 1104 | /* Number of default QPs */ |
18604c54 JBT |
1105 | if (use_mcs) |
1106 | port->num_def_qps = cb0->num_default_qps; | |
1107 | else | |
1108 | port->num_def_qps = 1; | |
7a291083 JBT |
1109 | |
1110 | if (!port->num_def_qps) { | |
1111 | ret = -EINVAL; | |
1112 | goto out_free; | |
1113 | } | |
1114 | ||
18604c54 JBT |
1115 | port->num_tx_qps = num_tx_qps; |
1116 | ||
1117 | if (port->num_def_qps >= port->num_tx_qps) | |
7a291083 JBT |
1118 | port->num_add_tx_qps = 0; |
1119 | else | |
18604c54 | 1120 | port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
7a291083 JBT |
1121 | |
1122 | ret = 0; | |
1123 | out_free: | |
1124 | if (ret || netif_msg_probe(port)) | |
1125 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
3faf2693 | 1126 | free_page((unsigned long)cb0); |
7a291083 JBT |
1127 | out: |
1128 | return ret; | |
1129 | } | |
1130 | ||
1131 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
1132 | { | |
1133 | struct hcp_ehea_port_cb4 *cb4; | |
1134 | u64 hret; | |
1135 | int ret = 0; | |
1136 | ||
3faf2693 | 1137 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1138 | if (!cb4) { |
cfa969e3 | 1139 | ehea_error("no mem for cb4"); |
7a291083 JBT |
1140 | ret = -ENOMEM; |
1141 | goto out; | |
1142 | } | |
1143 | ||
1144 | cb4->port_speed = port_speed; | |
1145 | ||
1146 | netif_carrier_off(port->netdev); | |
1147 | ||
1148 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1149 | port->logical_port_id, | |
1150 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
1151 | if (hret == H_SUCCESS) { | |
1152 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
1153 | ||
1154 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
1155 | port->logical_port_id, | |
1156 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
1157 | cb4); | |
1158 | if (hret == H_SUCCESS) { | |
1159 | switch (cb4->port_speed) { | |
1160 | case H_SPEED_10M_H: | |
1161 | port->port_speed = EHEA_SPEED_10M; | |
1162 | port->full_duplex = 0; | |
1163 | break; | |
1164 | case H_SPEED_10M_F: | |
1165 | port->port_speed = EHEA_SPEED_10M; | |
1166 | port->full_duplex = 1; | |
1167 | break; | |
1168 | case H_SPEED_100M_H: | |
1169 | port->port_speed = EHEA_SPEED_100M; | |
1170 | port->full_duplex = 0; | |
1171 | break; | |
1172 | case H_SPEED_100M_F: | |
1173 | port->port_speed = EHEA_SPEED_100M; | |
1174 | port->full_duplex = 1; | |
1175 | break; | |
1176 | case H_SPEED_1G_F: | |
1177 | port->port_speed = EHEA_SPEED_1G; | |
1178 | port->full_duplex = 1; | |
1179 | break; | |
1180 | case H_SPEED_10G_F: | |
1181 | port->port_speed = EHEA_SPEED_10G; | |
1182 | port->full_duplex = 1; | |
1183 | break; | |
1184 | default: | |
1185 | port->port_speed = 0; | |
1186 | port->full_duplex = 0; | |
1187 | break; | |
1188 | } | |
1189 | } else { | |
cfa969e3 | 1190 | ehea_error("Failed sensing port speed"); |
7a291083 JBT |
1191 | ret = -EIO; |
1192 | } | |
1193 | } else { | |
1194 | if (hret == H_AUTHORITY) { | |
cfa969e3 | 1195 | ehea_info("Hypervisor denied setting port speed"); |
7a291083 JBT |
1196 | ret = -EPERM; |
1197 | } else { | |
1198 | ret = -EIO; | |
cfa969e3 | 1199 | ehea_error("Failed setting port speed"); |
7a291083 JBT |
1200 | } |
1201 | } | |
8759cf76 JBT |
1202 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
1203 | netif_carrier_on(port->netdev); | |
1204 | ||
3faf2693 | 1205 | free_page((unsigned long)cb4); |
7a291083 JBT |
1206 | out: |
1207 | return ret; | |
1208 | } | |
1209 | ||
1210 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
1211 | { | |
1212 | int ret; | |
1213 | u8 ec; | |
1214 | u8 portnum; | |
1215 | struct ehea_port *port; | |
1216 | ||
1217 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
1218 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
1219 | port = ehea_get_port(adapter, portnum); | |
1220 | ||
1221 | switch (ec) { | |
1222 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
1223 | ||
1224 | if (!port) { | |
cfa969e3 | 1225 | ehea_error("unknown portnum %x", portnum); |
7a291083 JBT |
1226 | break; |
1227 | } | |
1228 | ||
1229 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { | |
cfa969e3 | 1230 | if (!netif_carrier_ok(port->netdev)) { |
1e1675cc | 1231 | ret = ehea_sense_port_attr(port); |
7a291083 | 1232 | if (ret) { |
cfa969e3 DM |
1233 | ehea_error("failed resensing port " |
1234 | "attributes"); | |
7a291083 JBT |
1235 | break; |
1236 | } | |
1237 | ||
cfa969e3 DM |
1238 | if (netif_msg_link(port)) |
1239 | ehea_info("%s: Logical port up: %dMbps " | |
1240 | "%s Duplex", | |
1241 | port->netdev->name, | |
1242 | port->port_speed, | |
1243 | port->full_duplex == | |
1244 | 1 ? "Full" : "Half"); | |
7a291083 | 1245 | |
cfa969e3 DM |
1246 | netif_carrier_on(port->netdev); |
1247 | netif_wake_queue(port->netdev); | |
7a291083 JBT |
1248 | } |
1249 | } else | |
cfa969e3 DM |
1250 | if (netif_carrier_ok(port->netdev)) { |
1251 | if (netif_msg_link(port)) | |
1252 | ehea_info("%s: Logical port down", | |
1253 | port->netdev->name); | |
1254 | netif_carrier_off(port->netdev); | |
1255 | netif_stop_queue(port->netdev); | |
7a291083 JBT |
1256 | } |
1257 | ||
1258 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 1259 | port->phy_link = EHEA_PHY_LINK_UP; |
cfa969e3 DM |
1260 | if (netif_msg_link(port)) |
1261 | ehea_info("%s: Physical port up", | |
1262 | port->netdev->name); | |
8759cf76 | 1263 | if (prop_carrier_state) |
cfa969e3 | 1264 | netif_carrier_on(port->netdev); |
7a291083 | 1265 | } else { |
8759cf76 | 1266 | port->phy_link = EHEA_PHY_LINK_DOWN; |
cfa969e3 DM |
1267 | if (netif_msg_link(port)) |
1268 | ehea_info("%s: Physical port down", | |
1269 | port->netdev->name); | |
8759cf76 | 1270 | if (prop_carrier_state) |
cfa969e3 | 1271 | netif_carrier_off(port->netdev); |
7a291083 JBT |
1272 | } |
1273 | ||
1274 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
cfa969e3 | 1275 | ehea_info("External switch port is primary port"); |
7a291083 | 1276 | else |
cfa969e3 | 1277 | ehea_info("External switch port is backup port"); |
7a291083 JBT |
1278 | |
1279 | break; | |
1280 | case EHEA_EC_ADAPTER_MALFUNC: | |
cfa969e3 | 1281 | ehea_error("Adapter malfunction"); |
7a291083 JBT |
1282 | break; |
1283 | case EHEA_EC_PORT_MALFUNC: | |
cfa969e3 DM |
1284 | ehea_info("Port malfunction: Device: %s", port->netdev->name); |
1285 | netif_carrier_off(port->netdev); | |
1286 | netif_stop_queue(port->netdev); | |
7a291083 JBT |
1287 | break; |
1288 | default: | |
cfa969e3 | 1289 | ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe); |
7a291083 JBT |
1290 | break; |
1291 | } | |
1292 | } | |
1293 | ||
1294 | static void ehea_neq_tasklet(unsigned long data) | |
1295 | { | |
508d2b5d | 1296 | struct ehea_adapter *adapter = (struct ehea_adapter *)data; |
7a291083 JBT |
1297 | struct ehea_eqe *eqe; |
1298 | u64 event_mask; | |
1299 | ||
1300 | eqe = ehea_poll_eq(adapter->neq); | |
cfa969e3 | 1301 | ehea_debug("eqe=%p", eqe); |
7a291083 JBT |
1302 | |
1303 | while (eqe) { | |
cfa969e3 | 1304 | ehea_debug("*eqe=%lx", eqe->entry); |
7a291083 JBT |
1305 | ehea_parse_eqe(adapter, eqe->entry); |
1306 | eqe = ehea_poll_eq(adapter->neq); | |
cfa969e3 | 1307 | ehea_debug("next eqe=%p", eqe); |
7a291083 JBT |
1308 | } |
1309 | ||
1310 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1311 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1312 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1313 | ||
1314 | ehea_h_reset_events(adapter->handle, | |
1315 | adapter->neq->fw_handle, event_mask); | |
1316 | } | |
1317 | ||
7d12e780 | 1318 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1319 | { |
1320 | struct ehea_adapter *adapter = param; | |
1321 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1322 | return IRQ_HANDLED; | |
1323 | } | |
1324 | ||
1325 | ||
1326 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1327 | { | |
1328 | int ret; | |
1329 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1330 | ||
e2878806 TK |
1331 | ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 |
1332 | - init_attr->act_nr_rwqes_rq2 | |
1333 | - init_attr->act_nr_rwqes_rq3 - 1); | |
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) { |
cfa969e3 DM |
1356 | ehea_error("failed registering irq for qp_aff_irq_handler:" |
1357 | "ist=%X", port->qp_eq->attr.ist1); | |
7a291083 JBT |
1358 | goto out_free_qpeq; |
1359 | } | |
1360 | ||
cfa969e3 DM |
1361 | if (netif_msg_ifup(port)) |
1362 | ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " | |
1363 | "registered", 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) { | |
cfa969e3 DM |
1375 | ehea_error("failed registering irq for ehea_queue " |
1376 | "port_res_nr:%d, ist=%X", i, | |
1377 | pr->eq->attr.ist1); | |
7a291083 JBT |
1378 | goto out_free_req; |
1379 | } | |
cfa969e3 DM |
1380 | if (netif_msg_ifup(port)) |
1381 | ehea_info("irq_handle 0x%X for function ehea_queue_int " | |
1382 | "%d registered", pr->eq->attr.ist1, i); | |
7a291083 JBT |
1383 | } |
1384 | out: | |
1385 | return ret; | |
1386 | ||
18604c54 | 1387 | |
7a291083 JBT |
1388 | out_free_req: |
1389 | while (--i >= 0) { | |
18604c54 | 1390 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1391 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1392 | } |
18604c54 | 1393 | |
7a291083 | 1394 | out_free_qpeq: |
6b08f3ae | 1395 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1396 | i = port->num_def_qps; |
18604c54 | 1397 | |
7a291083 | 1398 | goto out; |
18604c54 | 1399 | |
7a291083 JBT |
1400 | } |
1401 | ||
1402 | static void ehea_free_interrupts(struct net_device *dev) | |
1403 | { | |
1404 | struct ehea_port *port = netdev_priv(dev); | |
1405 | struct ehea_port_res *pr; | |
1406 | int i; | |
1407 | ||
1408 | /* send */ | |
18604c54 | 1409 | |
7a291083 JBT |
1410 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
1411 | pr = &port->port_res[i]; | |
6b08f3ae | 1412 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
cfa969e3 DM |
1413 | if (netif_msg_intr(port)) |
1414 | ehea_info("free send irq for res %d with handle 0x%X", | |
1415 | i, pr->eq->attr.ist1); | |
7a291083 JBT |
1416 | } |
1417 | ||
1418 | /* associated events */ | |
6b08f3ae | 1419 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
cfa969e3 DM |
1420 | if (netif_msg_intr(port)) |
1421 | ehea_info("associated event interrupt for handle 0x%X freed", | |
1422 | port->qp_eq->attr.ist1); | |
7a291083 JBT |
1423 | } |
1424 | ||
1425 | static int ehea_configure_port(struct ehea_port *port) | |
1426 | { | |
1427 | int ret, i; | |
1428 | u64 hret, mask; | |
1429 | struct hcp_ehea_port_cb0 *cb0; | |
1430 | ||
1431 | ret = -ENOMEM; | |
3faf2693 | 1432 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
1433 | if (!cb0) |
1434 | goto out; | |
1435 | ||
1436 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1437 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1438 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1439 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1440 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1441 | PXLY_RC_VLAN_FILTER) | |
1442 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1443 | ||
18604c54 JBT |
1444 | for (i = 0; i < port->num_mcs; i++) |
1445 | if (use_mcs) | |
1446 | cb0->default_qpn_arr[i] = | |
1447 | port->port_res[i].qp->init_attr.qp_nr; | |
1448 | else | |
1449 | cb0->default_qpn_arr[i] = | |
1450 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1451 | |
7a291083 JBT |
1452 | if (netif_msg_ifup(port)) |
1453 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1454 | ||
1455 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1456 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1457 | ||
1458 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1459 | port->logical_port_id, | |
1460 | H_PORT_CB0, mask, cb0); | |
1461 | ret = -EIO; | |
1462 | if (hret != H_SUCCESS) | |
1463 | goto out_free; | |
1464 | ||
1465 | ret = 0; | |
1466 | ||
1467 | out_free: | |
3faf2693 | 1468 | free_page((unsigned long)cb0); |
7a291083 JBT |
1469 | out: |
1470 | return ret; | |
1471 | } | |
1472 | ||
e542aa6b | 1473 | int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1474 | { |
e542aa6b | 1475 | int ret; |
7a291083 JBT |
1476 | struct ehea_adapter *adapter = pr->port->adapter; |
1477 | ||
e542aa6b JBT |
1478 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1479 | if (ret) | |
7a291083 JBT |
1480 | goto out; |
1481 | ||
e542aa6b JBT |
1482 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1483 | if (ret) | |
1484 | goto out_free; | |
7a291083 JBT |
1485 | |
1486 | return 0; | |
1487 | ||
e542aa6b JBT |
1488 | out_free: |
1489 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1490 | out: |
cfa969e3 | 1491 | ehea_error("Generating SMRS failed\n"); |
7a291083 JBT |
1492 | return -EIO; |
1493 | } | |
1494 | ||
e542aa6b | 1495 | int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1496 | { |
8e95a202 JP |
1497 | if ((ehea_rem_mr(&pr->send_mr)) || |
1498 | (ehea_rem_mr(&pr->recv_mr))) | |
e542aa6b JBT |
1499 | return -EIO; |
1500 | else | |
1501 | return 0; | |
7a291083 JBT |
1502 | } |
1503 | ||
1504 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1505 | { | |
508d2b5d | 1506 | int arr_size = sizeof(void *) * max_q_entries; |
7a291083 | 1507 | |
89bf67f1 | 1508 | q_skba->arr = vzalloc(arr_size); |
7a291083 JBT |
1509 | if (!q_skba->arr) |
1510 | return -ENOMEM; | |
1511 | ||
7a291083 JBT |
1512 | q_skba->len = max_q_entries; |
1513 | q_skba->index = 0; | |
1514 | q_skba->os_skbs = 0; | |
1515 | ||
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1520 | struct port_res_cfg *pr_cfg, int queue_token) | |
1521 | { | |
1522 | struct ehea_adapter *adapter = port->adapter; | |
1523 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1524 | struct ehea_qp_init_attr *init_attr = NULL; | |
1525 | int ret = -EIO; | |
ce45b873 BL |
1526 | u64 tx_bytes, rx_bytes, tx_packets, rx_packets; |
1527 | ||
1528 | tx_bytes = pr->tx_bytes; | |
1529 | tx_packets = pr->tx_packets; | |
1530 | rx_bytes = pr->rx_bytes; | |
1531 | rx_packets = pr->rx_packets; | |
7a291083 JBT |
1532 | |
1533 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1534 | ||
ce45b873 BL |
1535 | pr->tx_bytes = rx_bytes; |
1536 | pr->tx_packets = tx_packets; | |
1537 | pr->rx_bytes = rx_bytes; | |
1538 | pr->rx_packets = rx_packets; | |
1539 | ||
7a291083 | 1540 | pr->port = port; |
7a291083 JBT |
1541 | spin_lock_init(&pr->xmit_lock); |
1542 | spin_lock_init(&pr->netif_queue); | |
1543 | ||
18604c54 JBT |
1544 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1545 | if (!pr->eq) { | |
cfa969e3 | 1546 | ehea_error("create_eq failed (eq)"); |
7a291083 JBT |
1547 | goto out_free; |
1548 | } | |
1549 | ||
1550 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1551 | pr->eq->fw_handle, |
7a291083 JBT |
1552 | port->logical_port_id); |
1553 | if (!pr->recv_cq) { | |
cfa969e3 | 1554 | ehea_error("create_cq failed (cq_recv)"); |
7a291083 JBT |
1555 | goto out_free; |
1556 | } | |
1557 | ||
1558 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1559 | pr->eq->fw_handle, |
7a291083 JBT |
1560 | port->logical_port_id); |
1561 | if (!pr->send_cq) { | |
cfa969e3 | 1562 | ehea_error("create_cq failed (cq_send)"); |
7a291083 JBT |
1563 | goto out_free; |
1564 | } | |
1565 | ||
1566 | if (netif_msg_ifup(port)) | |
cfa969e3 DM |
1567 | ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", |
1568 | pr->send_cq->attr.act_nr_of_cqes, | |
1569 | pr->recv_cq->attr.act_nr_of_cqes); | |
7a291083 JBT |
1570 | |
1571 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1572 | if (!init_attr) { | |
1573 | ret = -ENOMEM; | |
cfa969e3 | 1574 | ehea_error("no mem for ehea_qp_init_attr"); |
7a291083 JBT |
1575 | goto out_free; |
1576 | } | |
1577 | ||
1578 | init_attr->low_lat_rq1 = 1; | |
1579 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1580 | init_attr->rq_count = 3; | |
1581 | init_attr->qp_token = queue_token; | |
1582 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1583 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1584 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1585 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1586 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1587 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1588 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1589 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1590 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1591 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1592 | init_attr->port_nr = port->logical_port_id; | |
1593 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1594 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1595 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1596 | ||
1597 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1598 | if (!pr->qp) { | |
cfa969e3 | 1599 | ehea_error("create_qp failed"); |
7a291083 JBT |
1600 | ret = -EIO; |
1601 | goto out_free; | |
1602 | } | |
1603 | ||
1604 | if (netif_msg_ifup(port)) | |
cfa969e3 DM |
1605 | ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " |
1606 | "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, | |
1607 | init_attr->act_nr_send_wqes, | |
1608 | init_attr->act_nr_rwqes_rq1, | |
1609 | init_attr->act_nr_rwqes_rq2, | |
1610 | init_attr->act_nr_rwqes_rq3); | |
7a291083 | 1611 | |
44fb3126 TK |
1612 | pr->sq_skba_size = init_attr->act_nr_send_wqes + 1; |
1613 | ||
1614 | ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size); | |
7a291083 JBT |
1615 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); |
1616 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1617 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1618 | if (ret) | |
1619 | goto out_free; | |
1620 | ||
1621 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1622 | if (ehea_gen_smrs(pr) != 0) { | |
1623 | ret = -EIO; | |
1624 | goto out_free; | |
1625 | } | |
18604c54 | 1626 | |
7a291083 JBT |
1627 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1628 | ||
1629 | kfree(init_attr); | |
18604c54 | 1630 | |
bea3348e | 1631 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1632 | |
d4dc4ec9 JBT |
1633 | pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
1634 | pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; | |
1635 | pr->lro_mgr.lro_arr = pr->lro_desc; | |
1636 | pr->lro_mgr.get_skb_header = get_skb_hdr; | |
1637 | pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; | |
1638 | pr->lro_mgr.dev = port->netdev; | |
1639 | pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1640 | pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1641 | ||
7a291083 JBT |
1642 | ret = 0; |
1643 | goto out; | |
1644 | ||
1645 | out_free: | |
1646 | kfree(init_attr); | |
1647 | vfree(pr->sq_skba.arr); | |
1648 | vfree(pr->rq1_skba.arr); | |
1649 | vfree(pr->rq2_skba.arr); | |
1650 | vfree(pr->rq3_skba.arr); | |
1651 | ehea_destroy_qp(pr->qp); | |
1652 | ehea_destroy_cq(pr->send_cq); | |
1653 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1654 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1655 | out: |
1656 | return ret; | |
1657 | } | |
1658 | ||
1659 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1660 | { | |
1661 | int ret, i; | |
1662 | ||
357eb46d HH |
1663 | if (pr->qp) |
1664 | netif_napi_del(&pr->napi); | |
1665 | ||
7a291083 JBT |
1666 | ret = ehea_destroy_qp(pr->qp); |
1667 | ||
1668 | if (!ret) { | |
1669 | ehea_destroy_cq(pr->send_cq); | |
1670 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1671 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1672 | |
1673 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1674 | if (pr->rq1_skba.arr[i]) | |
1675 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1676 | ||
1677 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1678 | if (pr->rq2_skba.arr[i]) | |
1679 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1680 | ||
1681 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1682 | if (pr->rq3_skba.arr[i]) | |
1683 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1684 | ||
1685 | for (i = 0; i < pr->sq_skba.len; i++) | |
1686 | if (pr->sq_skba.arr[i]) | |
1687 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1688 | ||
1689 | vfree(pr->rq1_skba.arr); | |
1690 | vfree(pr->rq2_skba.arr); | |
1691 | vfree(pr->rq3_skba.arr); | |
1692 | vfree(pr->sq_skba.arr); | |
1693 | ret = ehea_rem_smrs(pr); | |
1694 | } | |
1695 | return ret; | |
1696 | } | |
1697 | ||
1698 | /* | |
1699 | * The write_* functions store information in swqe which is used by | |
1700 | * the hardware to calculate the ip/tcp/udp checksum | |
1701 | */ | |
1702 | ||
1703 | static inline void write_ip_start_end(struct ehea_swqe *swqe, | |
1704 | const struct sk_buff *skb) | |
1705 | { | |
eddc9ec5 | 1706 | swqe->ip_start = skb_network_offset(skb); |
c9bdd4b5 | 1707 | swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
7a291083 JBT |
1708 | } |
1709 | ||
1710 | static inline void write_tcp_offset_end(struct ehea_swqe *swqe, | |
1711 | const struct sk_buff *skb) | |
1712 | { | |
1713 | swqe->tcp_offset = | |
1714 | (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); | |
1715 | ||
1716 | swqe->tcp_end = (u16)skb->len - 1; | |
1717 | } | |
1718 | ||
1719 | static inline void write_udp_offset_end(struct ehea_swqe *swqe, | |
1720 | const struct sk_buff *skb) | |
1721 | { | |
1722 | swqe->tcp_offset = | |
1723 | (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); | |
1724 | ||
1725 | swqe->tcp_end = (u16)skb->len - 1; | |
1726 | } | |
1727 | ||
1728 | ||
1729 | static void write_swqe2_TSO(struct sk_buff *skb, | |
1730 | struct ehea_swqe *swqe, u32 lkey) | |
1731 | { | |
1732 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
1733 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; | |
e743d313 | 1734 | int skb_data_size = skb_headlen(skb); |
7a291083 | 1735 | int headersize; |
7a291083 JBT |
1736 | |
1737 | /* Packet is TCP with TSO enabled */ | |
1738 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1739 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1740 | /* copy only eth/ip/tcp headers to immediate data and | |
1741 | * the rest of skb->data to sg1entry | |
1742 | */ | |
ab6a5bb6 | 1743 | headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
7a291083 | 1744 | |
e743d313 | 1745 | skb_data_size = skb_headlen(skb); |
7a291083 JBT |
1746 | |
1747 | if (skb_data_size >= headersize) { | |
1748 | /* copy immediate data */ | |
d626f62b | 1749 | skb_copy_from_linear_data(skb, imm_data, headersize); |
7a291083 JBT |
1750 | swqe->immediate_data_length = headersize; |
1751 | ||
1752 | if (skb_data_size > headersize) { | |
1753 | /* set sg1entry data */ | |
1754 | sg1entry->l_key = lkey; | |
1755 | sg1entry->len = skb_data_size - headersize; | |
44a5b3d5 TK |
1756 | sg1entry->vaddr = |
1757 | ehea_map_vaddr(skb->data + headersize); | |
7a291083 JBT |
1758 | swqe->descriptors++; |
1759 | } | |
1760 | } else | |
cfa969e3 | 1761 | ehea_error("cannot handle fragmented headers"); |
7a291083 JBT |
1762 | } |
1763 | ||
1764 | static void write_swqe2_nonTSO(struct sk_buff *skb, | |
1765 | struct ehea_swqe *swqe, u32 lkey) | |
1766 | { | |
e743d313 | 1767 | int skb_data_size = skb_headlen(skb); |
7a291083 JBT |
1768 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; |
1769 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
7a291083 JBT |
1770 | |
1771 | /* Packet is any nonTSO type | |
1772 | * | |
1773 | * Copy as much as possible skb->data to immediate data and | |
1774 | * the rest to sg1entry | |
1775 | */ | |
1776 | if (skb_data_size >= SWQE2_MAX_IMM) { | |
1777 | /* copy immediate data */ | |
d626f62b | 1778 | skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
7a291083 JBT |
1779 | |
1780 | swqe->immediate_data_length = SWQE2_MAX_IMM; | |
1781 | ||
1782 | if (skb_data_size > SWQE2_MAX_IMM) { | |
1783 | /* copy sg1entry data */ | |
1784 | sg1entry->l_key = lkey; | |
1785 | sg1entry->len = skb_data_size - SWQE2_MAX_IMM; | |
44a5b3d5 TK |
1786 | sg1entry->vaddr = |
1787 | ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); | |
7a291083 JBT |
1788 | swqe->descriptors++; |
1789 | } | |
1790 | } else { | |
d626f62b | 1791 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1792 | swqe->immediate_data_length = skb_data_size; |
1793 | } | |
1794 | } | |
1795 | ||
1796 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1797 | struct ehea_swqe *swqe, u32 lkey) | |
1798 | { | |
1799 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1800 | skb_frag_t *frag; | |
1801 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1802 | |
1803 | nfrags = skb_shinfo(skb)->nr_frags; | |
1804 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
508d2b5d | 1805 | sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; |
7a291083 JBT |
1806 | swqe->descriptors = 0; |
1807 | sg1entry_contains_frag_data = 0; | |
1808 | ||
1809 | if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) | |
1810 | write_swqe2_TSO(skb, swqe, lkey); | |
1811 | else | |
1812 | write_swqe2_nonTSO(skb, swqe, lkey); | |
1813 | ||
1814 | /* write descriptors */ | |
1815 | if (nfrags > 0) { | |
1816 | if (swqe->descriptors == 0) { | |
1817 | /* sg1entry not yet used */ | |
1818 | frag = &skb_shinfo(skb)->frags[0]; | |
1819 | ||
1820 | /* copy sg1entry data */ | |
1821 | sg1entry->l_key = lkey; | |
1822 | sg1entry->len = frag->size; | |
44a5b3d5 TK |
1823 | sg1entry->vaddr = |
1824 | ehea_map_vaddr(page_address(frag->page) | |
1825 | + frag->page_offset); | |
7a291083 JBT |
1826 | swqe->descriptors++; |
1827 | sg1entry_contains_frag_data = 1; | |
1828 | } | |
1829 | ||
1830 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1831 | ||
1832 | frag = &skb_shinfo(skb)->frags[i]; | |
1833 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1834 | ||
1835 | sgentry->l_key = lkey; | |
1836 | sgentry->len = frag->size; | |
44a5b3d5 TK |
1837 | sgentry->vaddr = |
1838 | ehea_map_vaddr(page_address(frag->page) | |
1839 | + frag->page_offset); | |
7a291083 JBT |
1840 | swqe->descriptors++; |
1841 | } | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1846 | { | |
1847 | int ret = 0; | |
1848 | u64 hret; | |
1849 | u8 reg_type; | |
1850 | ||
1851 | /* De/Register untagged packets */ | |
1852 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1853 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1854 | port->logical_port_id, | |
1855 | reg_type, port->mac_addr, 0, hcallid); | |
1856 | if (hret != H_SUCCESS) { | |
cfa969e3 DM |
1857 | ehea_error("%sregistering bc address failed (tagged)", |
1858 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1859 | ret = -EIO; |
1860 | goto out_herr; | |
1861 | } | |
1862 | ||
1863 | /* De/Register VLAN packets */ | |
1864 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1865 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1866 | port->logical_port_id, | |
1867 | reg_type, port->mac_addr, 0, hcallid); | |
1868 | if (hret != H_SUCCESS) { | |
cfa969e3 DM |
1869 | ehea_error("%sregistering bc address failed (vlan)", |
1870 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1871 | ret = -EIO; |
1872 | } | |
1873 | out_herr: | |
1874 | return ret; | |
1875 | } | |
1876 | ||
1877 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1878 | { | |
1879 | struct ehea_port *port = netdev_priv(dev); | |
1880 | struct sockaddr *mac_addr = sa; | |
1881 | struct hcp_ehea_port_cb0 *cb0; | |
1882 | int ret; | |
1883 | u64 hret; | |
1884 | ||
1885 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1886 | ret = -EADDRNOTAVAIL; | |
1887 | goto out; | |
1888 | } | |
1889 | ||
3faf2693 | 1890 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1891 | if (!cb0) { |
cfa969e3 | 1892 | ehea_error("no mem for cb0"); |
7a291083 JBT |
1893 | ret = -ENOMEM; |
1894 | goto out; | |
1895 | } | |
1896 | ||
1897 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1898 | ||
1899 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1900 | ||
1901 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1902 | port->logical_port_id, H_PORT_CB0, | |
1903 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1904 | if (hret != H_SUCCESS) { | |
1905 | ret = -EIO; | |
1906 | goto out_free; | |
1907 | } | |
1908 | ||
1909 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1910 | ||
1911 | /* Deregister old MAC in pHYP */ | |
00aaea2f JBT |
1912 | if (port->state == EHEA_PORT_UP) { |
1913 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1914 | if (ret) | |
1915 | goto out_upregs; | |
1916 | } | |
7a291083 JBT |
1917 | |
1918 | port->mac_addr = cb0->port_mac_addr << 16; | |
1919 | ||
1920 | /* Register new MAC in pHYP */ | |
00aaea2f JBT |
1921 | if (port->state == EHEA_PORT_UP) { |
1922 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1923 | if (ret) | |
1924 | goto out_upregs; | |
1925 | } | |
7a291083 JBT |
1926 | |
1927 | ret = 0; | |
21eee2dd TK |
1928 | |
1929 | out_upregs: | |
1930 | ehea_update_bcmc_registrations(); | |
7a291083 | 1931 | out_free: |
3faf2693 | 1932 | free_page((unsigned long)cb0); |
7a291083 JBT |
1933 | out: |
1934 | return ret; | |
1935 | } | |
1936 | ||
1937 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1938 | { | |
7674a588 | 1939 | if (hret == H_AUTHORITY) |
cfa969e3 DM |
1940 | ehea_info("Hypervisor denied %sabling promiscuous mode", |
1941 | enable == 1 ? "en" : "dis"); | |
7674a588 | 1942 | else |
cfa969e3 DM |
1943 | ehea_error("failed %sabling promiscuous mode", |
1944 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1945 | } |
1946 | ||
1947 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1948 | { | |
1949 | struct ehea_port *port = netdev_priv(dev); | |
1950 | struct hcp_ehea_port_cb7 *cb7; | |
1951 | u64 hret; | |
1952 | ||
aa3bc6c6 | 1953 | if (enable == port->promisc) |
7a291083 JBT |
1954 | return; |
1955 | ||
3faf2693 | 1956 | cb7 = (void *)get_zeroed_page(GFP_ATOMIC); |
7a291083 | 1957 | if (!cb7) { |
cfa969e3 | 1958 | ehea_error("no mem for cb7"); |
7a291083 JBT |
1959 | goto out; |
1960 | } | |
1961 | ||
1962 | /* Modify Pxs_DUCQPN in CB7 */ | |
1963 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1964 | ||
1965 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1966 | port->logical_port_id, | |
1967 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1968 | if (hret) { | |
1969 | ehea_promiscuous_error(hret, enable); | |
1970 | goto out; | |
1971 | } | |
1972 | ||
1973 | port->promisc = enable; | |
1974 | out: | |
3faf2693 | 1975 | free_page((unsigned long)cb7); |
7a291083 JBT |
1976 | } |
1977 | ||
1978 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1979 | u32 hcallid) | |
1980 | { | |
1981 | u64 hret; | |
1982 | u8 reg_type; | |
1983 | ||
1984 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1985 | | EHEA_BCMC_UNTAGGED; | |
1986 | ||
1987 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1988 | port->logical_port_id, | |
1989 | reg_type, mc_mac_addr, 0, hcallid); | |
1990 | if (hret) | |
1991 | goto out; | |
1992 | ||
1993 | reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST | |
1994 | | EHEA_BCMC_VLANID_ALL; | |
1995 | ||
1996 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1997 | port->logical_port_id, | |
1998 | reg_type, mc_mac_addr, 0, hcallid); | |
1999 | out: | |
2000 | return hret; | |
2001 | } | |
2002 | ||
2003 | static int ehea_drop_multicast_list(struct net_device *dev) | |
2004 | { | |
2005 | struct ehea_port *port = netdev_priv(dev); | |
2006 | struct ehea_mc_list *mc_entry = port->mc_list; | |
2007 | struct list_head *pos; | |
2008 | struct list_head *temp; | |
2009 | int ret = 0; | |
2010 | u64 hret; | |
2011 | ||
2012 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
2013 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
2014 | ||
2015 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
2016 | H_DEREG_BCMC); | |
2017 | if (hret) { | |
cfa969e3 | 2018 | ehea_error("failed deregistering mcast MAC"); |
7a291083 JBT |
2019 | ret = -EIO; |
2020 | } | |
2021 | ||
2022 | list_del(pos); | |
2023 | kfree(mc_entry); | |
2024 | } | |
2025 | return ret; | |
2026 | } | |
2027 | ||
2028 | static void ehea_allmulti(struct net_device *dev, int enable) | |
2029 | { | |
2030 | struct ehea_port *port = netdev_priv(dev); | |
2031 | u64 hret; | |
2032 | ||
2033 | if (!port->allmulti) { | |
2034 | if (enable) { | |
2035 | /* Enable ALLMULTI */ | |
2036 | ehea_drop_multicast_list(dev); | |
2037 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
2038 | if (!hret) | |
2039 | port->allmulti = 1; | |
2040 | else | |
cfa969e3 | 2041 | ehea_error("failed enabling IFF_ALLMULTI"); |
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 | |
cfa969e3 | 2050 | ehea_error("failed disabling IFF_ALLMULTI"); |
7a291083 JBT |
2051 | } |
2052 | } | |
2053 | ||
508d2b5d | 2054 | static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) |
7a291083 JBT |
2055 | { |
2056 | struct ehea_mc_list *ehea_mcl_entry; | |
2057 | u64 hret; | |
2058 | ||
1e1675cc | 2059 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
7a291083 | 2060 | if (!ehea_mcl_entry) { |
cfa969e3 | 2061 | ehea_error("no mem for mcl_entry"); |
7a291083 JBT |
2062 | return; |
2063 | } | |
2064 | ||
2065 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
2066 | ||
2067 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
2068 | ||
2069 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
2070 | H_REG_BCMC); | |
2071 | if (!hret) | |
2072 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
2073 | else { | |
cfa969e3 | 2074 | ehea_error("failed registering mcast MAC"); |
7a291083 JBT |
2075 | kfree(ehea_mcl_entry); |
2076 | } | |
2077 | } | |
2078 | ||
2079 | static void ehea_set_multicast_list(struct net_device *dev) | |
2080 | { | |
2081 | struct ehea_port *port = netdev_priv(dev); | |
22bedad3 | 2082 | struct netdev_hw_addr *ha; |
48e2f183 | 2083 | int ret; |
7a291083 JBT |
2084 | |
2085 | if (dev->flags & IFF_PROMISC) { | |
2086 | ehea_promiscuous(dev, 1); | |
2087 | return; | |
2088 | } | |
2089 | ehea_promiscuous(dev, 0); | |
2090 | ||
2091 | if (dev->flags & IFF_ALLMULTI) { | |
2092 | ehea_allmulti(dev, 1); | |
21eee2dd | 2093 | goto out; |
7a291083 JBT |
2094 | } |
2095 | ehea_allmulti(dev, 0); | |
2096 | ||
4cd24eaf | 2097 | if (!netdev_mc_empty(dev)) { |
7a291083 JBT |
2098 | ret = ehea_drop_multicast_list(dev); |
2099 | if (ret) { | |
2100 | /* Dropping the current multicast list failed. | |
2101 | * Enabling ALL_MULTI is the best we can do. | |
2102 | */ | |
2103 | ehea_allmulti(dev, 1); | |
2104 | } | |
2105 | ||
4cd24eaf | 2106 | if (netdev_mc_count(dev) > port->adapter->max_mc_mac) { |
cfa969e3 DM |
2107 | ehea_info("Mcast registration limit reached (0x%llx). " |
2108 | "Use ALLMULTI!", | |
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 | ||
cfa969e3 DM |
2315 | if (netif_msg_tx_queued(port)) { |
2316 | ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); | |
bff0a55f | 2317 | ehea_dump(swqe, 512, "swqe"); |
cfa969e3 | 2318 | } |
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) { |
cfa969e3 | 2354 | ehea_error("no mem for cb1"); |
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) | |
cfa969e3 | 2361 | ehea_error("modify_ehea_port failed"); |
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) { |
cfa969e3 | 2378 | ehea_error("no mem for cb1"); |
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) { | |
cfa969e3 | 2385 | ehea_error("query_ehea_port failed"); |
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) | |
cfa969e3 | 2395 | ehea_error("modify_ehea_port failed"); |
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) { |
cfa969e3 | 2413 | ehea_error("no mem for cb1"); |
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) { | |
cfa969e3 | 2420 | ehea_error("query_ehea_port failed"); |
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) | |
cfa969e3 | 2430 | ehea_error("modify_ehea_port failed"); |
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) { | |
cfa969e3 | 2452 | ehea_error("query_ehea_qp failed (1)"); |
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) { | |
cfa969e3 | 2461 | ehea_error("modify_ehea_qp failed (1)"); |
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) { | |
cfa969e3 | 2468 | ehea_error("query_ehea_qp failed (2)"); |
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) { | |
cfa969e3 | 2477 | ehea_error("modify_ehea_qp failed (2)"); |
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) { | |
cfa969e3 | 2484 | ehea_error("query_ehea_qp failed (3)"); |
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) { | |
cfa969e3 | 2493 | ehea_error("modify_ehea_qp failed (3)"); |
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) { | |
cfa969e3 | 2500 | ehea_error("query_ehea_qp failed (4)"); |
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; | |
cfa969e3 | 2521 | ehea_error("ehea_create_eq failed (qp_eq)"); |
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) { | |
cfa969e3 | 2602 | ehea_error("port_res_failed"); |
7a291083 JBT |
2603 | goto out; |
2604 | } | |
2605 | ||
2606 | /* Set default QP for this port */ | |
2607 | ret = ehea_configure_port(port); | |
2608 | if (ret) { | |
cfa969e3 | 2609 | ehea_error("ehea_configure_port failed. ret:%d", ret); |
7a291083 JBT |
2610 | goto out_clean_pr; |
2611 | } | |
2612 | ||
7a291083 JBT |
2613 | ret = ehea_reg_interrupts(dev); |
2614 | if (ret) { | |
cfa969e3 | 2615 | ehea_error("reg_interrupts failed. ret:%d", 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) { | |
cfa969e3 | 2622 | ehea_error("activate_qp failed"); |
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) { | |
cfa969e3 | 2630 | ehea_error("out_free_irqs"); |
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) |
cfa969e3 | 2653 | ehea_info("Failed starting %s. ret=%i", dev->name, 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 | |
cfa969e3 DM |
2684 | if (netif_msg_ifup(port)) |
2685 | ehea_info("enabling port %s", dev->name); | |
7a291083 JBT |
2686 | |
2687 | ret = ehea_up(dev); | |
bea3348e SH |
2688 | if (!ret) { |
2689 | port_napi_enable(port); | |
7a291083 | 2690 | netif_start_queue(dev); |
bea3348e | 2691 | } |
7a291083 | 2692 | |
5b27d427 | 2693 | init_waitqueue_head(&port->swqe_avail_wq); |
a8bb69f7 | 2694 | init_waitqueue_head(&port->restart_wq); |
5b27d427 | 2695 | |
a5af6ad3 | 2696 | mutex_unlock(&port->port_lock); |
7a291083 JBT |
2697 | |
2698 | return ret; | |
2699 | } | |
2700 | ||
2701 | static int ehea_down(struct net_device *dev) | |
2702 | { | |
bea3348e | 2703 | int ret; |
7a291083 JBT |
2704 | struct ehea_port *port = netdev_priv(dev); |
2705 | ||
2706 | if (port->state == EHEA_PORT_DOWN) | |
2707 | return 0; | |
2708 | ||
2709 | ehea_drop_multicast_list(dev); | |
21eee2dd TK |
2710 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
2711 | ||
7a291083 JBT |
2712 | ehea_free_interrupts(dev); |
2713 | ||
7a291083 | 2714 | port->state = EHEA_PORT_DOWN; |
44c82152 | 2715 | |
21eee2dd | 2716 | ehea_update_bcmc_registrations(); |
21eee2dd | 2717 | |
44c82152 TK |
2718 | ret = ehea_clean_all_portres(port); |
2719 | if (ret) | |
cfa969e3 DM |
2720 | ehea_info("Failed freeing resources for %s. ret=%i", |
2721 | dev->name, ret); | |
44c82152 | 2722 | |
21eee2dd | 2723 | ehea_update_firmware_handles(); |
21eee2dd | 2724 | |
7a291083 JBT |
2725 | return ret; |
2726 | } | |
2727 | ||
2728 | static int ehea_stop(struct net_device *dev) | |
2729 | { | |
2730 | int ret; | |
2731 | struct ehea_port *port = netdev_priv(dev); | |
2732 | ||
cfa969e3 DM |
2733 | if (netif_msg_ifdown(port)) |
2734 | ehea_info("disabling port %s", dev->name); | |
7a291083 | 2735 | |
2f69ae01 | 2736 | set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
4bb073c0 | 2737 | cancel_work_sync(&port->reset_task); |
a5af6ad3 | 2738 | mutex_lock(&port->port_lock); |
7a291083 | 2739 | netif_stop_queue(dev); |
0173b793 | 2740 | port_napi_disable(port); |
7a291083 | 2741 | ret = ehea_down(dev); |
a5af6ad3 | 2742 | mutex_unlock(&port->port_lock); |
2f69ae01 | 2743 | clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
7a291083 JBT |
2744 | return ret; |
2745 | } | |
2746 | ||
22559c5d | 2747 | static void ehea_purge_sq(struct ehea_qp *orig_qp) |
2c69448b JBT |
2748 | { |
2749 | struct ehea_qp qp = *orig_qp; | |
2750 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2751 | struct ehea_swqe *swqe; | |
2752 | int wqe_index; | |
2753 | int i; | |
2754 | ||
2755 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2756 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2757 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2758 | } | |
2759 | } | |
2760 | ||
22559c5d | 2761 | static void ehea_flush_sq(struct ehea_port *port) |
44fb3126 TK |
2762 | { |
2763 | int i; | |
2764 | ||
2765 | for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { | |
2766 | struct ehea_port_res *pr = &port->port_res[i]; | |
2767 | int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count; | |
5b27d427 BL |
2768 | int ret; |
2769 | ||
2770 | ret = wait_event_timeout(port->swqe_avail_wq, | |
2771 | atomic_read(&pr->swqe_avail) >= swqe_max, | |
2772 | msecs_to_jiffies(100)); | |
2773 | ||
2774 | if (!ret) { | |
cfa969e3 | 2775 | ehea_error("WARNING: sq not flushed completely"); |
5b27d427 | 2776 | break; |
44fb3126 TK |
2777 | } |
2778 | } | |
2779 | } | |
2780 | ||
2c69448b JBT |
2781 | int ehea_stop_qps(struct net_device *dev) |
2782 | { | |
2783 | struct ehea_port *port = netdev_priv(dev); | |
2784 | struct ehea_adapter *adapter = port->adapter; | |
508d2b5d | 2785 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2786 | int ret = -EIO; |
2787 | int dret; | |
2788 | int i; | |
2789 | u64 hret; | |
2790 | u64 dummy64 = 0; | |
2791 | u16 dummy16 = 0; | |
2792 | ||
3faf2693 | 2793 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2794 | if (!cb0) { |
2795 | ret = -ENOMEM; | |
2796 | goto out; | |
2797 | } | |
2798 | ||
2799 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2800 | struct ehea_port_res *pr = &port->port_res[i]; | |
2801 | struct ehea_qp *qp = pr->qp; | |
2802 | ||
2803 | /* Purge send queue */ | |
2804 | ehea_purge_sq(qp); | |
2805 | ||
2806 | /* Disable queue pair */ | |
2807 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2808 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2809 | cb0); | |
2810 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2811 | ehea_error("query_ehea_qp failed (1)"); |
2c69448b JBT |
2812 | goto out; |
2813 | } | |
2814 | ||
2815 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2816 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2817 | ||
2818 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2819 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2820 | 1), cb0, &dummy64, | |
2821 | &dummy64, &dummy16, &dummy16); | |
2822 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2823 | ehea_error("modify_ehea_qp failed (1)"); |
2c69448b JBT |
2824 | goto out; |
2825 | } | |
2826 | ||
2827 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2828 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2829 | cb0); | |
2830 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2831 | ehea_error("query_ehea_qp failed (2)"); |
2c69448b JBT |
2832 | goto out; |
2833 | } | |
2834 | ||
2835 | /* deregister shared memory regions */ | |
2836 | dret = ehea_rem_smrs(pr); | |
2837 | if (dret) { | |
cfa969e3 | 2838 | ehea_error("unreg shared memory region failed"); |
2c69448b JBT |
2839 | goto out; |
2840 | } | |
2841 | } | |
2842 | ||
2843 | ret = 0; | |
2844 | out: | |
3faf2693 | 2845 | free_page((unsigned long)cb0); |
2c69448b JBT |
2846 | |
2847 | return ret; | |
2848 | } | |
2849 | ||
508d2b5d | 2850 | void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr) |
2c69448b JBT |
2851 | { |
2852 | struct ehea_qp qp = *orig_qp; | |
2853 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2854 | struct ehea_rwqe *rwqe; | |
2855 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2856 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2857 | struct sk_buff *skb; | |
2858 | u32 lkey = pr->recv_mr.lkey; | |
2859 | ||
2860 | ||
2861 | int i; | |
2862 | int index; | |
2863 | ||
2864 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2865 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2866 | rwqe->sg_list[0].l_key = lkey; | |
2867 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2868 | skb = skba_rq2[index]; | |
2869 | if (skb) | |
2870 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2871 | } | |
2872 | ||
2873 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2874 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2875 | rwqe->sg_list[0].l_key = lkey; | |
2876 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2877 | skb = skba_rq3[index]; | |
2878 | if (skb) | |
2879 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | int ehea_restart_qps(struct net_device *dev) | |
2884 | { | |
2885 | struct ehea_port *port = netdev_priv(dev); | |
2886 | struct ehea_adapter *adapter = port->adapter; | |
2887 | int ret = 0; | |
2888 | int i; | |
2889 | ||
508d2b5d | 2890 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2891 | u64 hret; |
2892 | u64 dummy64 = 0; | |
2893 | u16 dummy16 = 0; | |
2894 | ||
3faf2693 | 2895 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2896 | if (!cb0) { |
2897 | ret = -ENOMEM; | |
2898 | goto out; | |
2899 | } | |
2900 | ||
2901 | for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { | |
2902 | struct ehea_port_res *pr = &port->port_res[i]; | |
2903 | struct ehea_qp *qp = pr->qp; | |
2904 | ||
2905 | ret = ehea_gen_smrs(pr); | |
2906 | if (ret) { | |
cfa969e3 | 2907 | ehea_error("creation of shared memory regions failed"); |
2c69448b JBT |
2908 | goto out; |
2909 | } | |
2910 | ||
2911 | ehea_update_rqs(qp, pr); | |
2912 | ||
2913 | /* Enable queue pair */ | |
2914 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2915 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2916 | cb0); | |
2917 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2918 | ehea_error("query_ehea_qp failed (1)"); |
2c69448b JBT |
2919 | goto out; |
2920 | } | |
2921 | ||
2922 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2923 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2924 | ||
2925 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2926 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2927 | 1), cb0, &dummy64, | |
2928 | &dummy64, &dummy16, &dummy16); | |
2929 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2930 | ehea_error("modify_ehea_qp failed (1)"); |
2c69448b JBT |
2931 | goto out; |
2932 | } | |
2933 | ||
2934 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2935 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2936 | cb0); | |
2937 | if (hret != H_SUCCESS) { | |
cfa969e3 | 2938 | ehea_error("query_ehea_qp failed (2)"); |
2c69448b JBT |
2939 | goto out; |
2940 | } | |
2941 | ||
2942 | /* refill entire queue */ | |
2943 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2944 | ehea_refill_rq2(pr, 0); | |
2945 | ehea_refill_rq3(pr, 0); | |
2946 | } | |
2947 | out: | |
3faf2693 | 2948 | free_page((unsigned long)cb0); |
2c69448b JBT |
2949 | |
2950 | return ret; | |
2951 | } | |
2952 | ||
c4028958 | 2953 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2954 | { |
2955 | int ret; | |
c4028958 DH |
2956 | struct ehea_port *port = |
2957 | container_of(work, struct ehea_port, reset_task); | |
2958 | struct net_device *dev = port->netdev; | |
7a291083 | 2959 | |
099473c1 | 2960 | mutex_lock(&dlpar_mem_lock); |
7a291083 | 2961 | port->resets++; |
a5af6ad3 | 2962 | mutex_lock(&port->port_lock); |
7a291083 | 2963 | netif_stop_queue(dev); |
bea3348e SH |
2964 | |
2965 | port_napi_disable(port); | |
7a291083 | 2966 | |
44c82152 | 2967 | ehea_down(dev); |
7a291083 JBT |
2968 | |
2969 | ret = ehea_up(dev); | |
44c82152 | 2970 | if (ret) |
7a291083 | 2971 | goto out; |
7a291083 | 2972 | |
2c69448b JBT |
2973 | ehea_set_multicast_list(dev); |
2974 | ||
cfa969e3 DM |
2975 | if (netif_msg_timer(port)) |
2976 | ehea_info("Device %s resetted successfully", dev->name); | |
7a291083 | 2977 | |
bea3348e SH |
2978 | port_napi_enable(port); |
2979 | ||
7a291083 JBT |
2980 | netif_wake_queue(dev); |
2981 | out: | |
a5af6ad3 | 2982 | mutex_unlock(&port->port_lock); |
099473c1 | 2983 | mutex_unlock(&dlpar_mem_lock); |
7a291083 JBT |
2984 | } |
2985 | ||
3d6b892b | 2986 | static void ehea_rereg_mrs(void) |
44c82152 TK |
2987 | { |
2988 | int ret, i; | |
2989 | struct ehea_adapter *adapter; | |
2990 | ||
cfa969e3 | 2991 | ehea_info("LPAR memory changed - re-initializing driver"); |
44c82152 TK |
2992 | |
2993 | list_for_each_entry(adapter, &adapter_list, list) | |
2994 | if (adapter->active_ports) { | |
2995 | /* Shutdown all ports */ | |
2996 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2997 | struct ehea_port *port = adapter->port[i]; | |
a5af6ad3 | 2998 | struct net_device *dev; |
44c82152 | 2999 | |
a5af6ad3 DW |
3000 | if (!port) |
3001 | continue; | |
44c82152 | 3002 | |
a5af6ad3 DW |
3003 | dev = port->netdev; |
3004 | ||
3005 | if (dev->flags & IFF_UP) { | |
3006 | mutex_lock(&port->port_lock); | |
3007 | netif_stop_queue(dev); | |
df39e8ba | 3008 | ehea_flush_sq(port); |
a5af6ad3 DW |
3009 | ret = ehea_stop_qps(dev); |
3010 | if (ret) { | |
3011 | mutex_unlock(&port->port_lock); | |
3012 | goto out; | |
44c82152 | 3013 | } |
a5af6ad3 DW |
3014 | port_napi_disable(port); |
3015 | mutex_unlock(&port->port_lock); | |
44c82152 | 3016 | } |
2928db4c | 3017 | reset_sq_restart_flag(port); |
44c82152 TK |
3018 | } |
3019 | ||
3020 | /* Unregister old memory region */ | |
3021 | ret = ehea_rem_mr(&adapter->mr); | |
3022 | if (ret) { | |
cfa969e3 DM |
3023 | ehea_error("unregister MR failed - driver" |
3024 | " inoperable!"); | |
44c82152 TK |
3025 | goto out; |
3026 | } | |
3027 | } | |
3028 | ||
44c82152 TK |
3029 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
3030 | ||
3031 | list_for_each_entry(adapter, &adapter_list, list) | |
3032 | if (adapter->active_ports) { | |
3033 | /* Register new memory region */ | |
3034 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
3035 | if (ret) { | |
cfa969e3 DM |
3036 | ehea_error("register MR failed - driver" |
3037 | " inoperable!"); | |
44c82152 TK |
3038 | goto out; |
3039 | } | |
3040 | ||
3041 | /* Restart all ports */ | |
3042 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
3043 | struct ehea_port *port = adapter->port[i]; | |
3044 | ||
3045 | if (port) { | |
3046 | struct net_device *dev = port->netdev; | |
3047 | ||
3048 | if (dev->flags & IFF_UP) { | |
a5af6ad3 | 3049 | mutex_lock(&port->port_lock); |
2c69448b JBT |
3050 | port_napi_enable(port); |
3051 | ret = ehea_restart_qps(dev); | |
2928db4c | 3052 | check_sqs(port); |
2c69448b | 3053 | if (!ret) |
44c82152 | 3054 | netif_wake_queue(dev); |
a5af6ad3 | 3055 | mutex_unlock(&port->port_lock); |
44c82152 TK |
3056 | } |
3057 | } | |
3058 | } | |
3059 | } | |
cfa969e3 | 3060 | ehea_info("re-initializing driver complete"); |
44c82152 TK |
3061 | out: |
3062 | return; | |
3063 | } | |
3064 | ||
7a291083 JBT |
3065 | static void ehea_tx_watchdog(struct net_device *dev) |
3066 | { | |
3067 | struct ehea_port *port = netdev_priv(dev); | |
3068 | ||
2c69448b JBT |
3069 | if (netif_carrier_ok(dev) && |
3070 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
2f69ae01 | 3071 | ehea_schedule_port_reset(port); |
7a291083 JBT |
3072 | } |
3073 | ||
3074 | int ehea_sense_adapter_attr(struct ehea_adapter *adapter) | |
3075 | { | |
3076 | struct hcp_query_ehea *cb; | |
3077 | u64 hret; | |
3078 | int ret; | |
3079 | ||
3faf2693 | 3080 | cb = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
3081 | if (!cb) { |
3082 | ret = -ENOMEM; | |
3083 | goto out; | |
3084 | } | |
3085 | ||
3086 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
3087 | ||
3088 | if (hret != H_SUCCESS) { | |
3089 | ret = -EIO; | |
3090 | goto out_herr; | |
3091 | } | |
3092 | ||
7a291083 JBT |
3093 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
3094 | ret = 0; | |
3095 | ||
3096 | out_herr: | |
3faf2693 | 3097 | free_page((unsigned long)cb); |
7a291083 JBT |
3098 | out: |
3099 | return ret; | |
3100 | } | |
3101 | ||
1acf2318 | 3102 | int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 3103 | { |
7a291083 | 3104 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
3105 | u64 hret; |
3106 | int ret = 0; | |
7a291083 | 3107 | |
1acf2318 | 3108 | *jumbo = 0; |
7a291083 | 3109 | |
1acf2318 | 3110 | /* (Try to) enable *jumbo frames */ |
3faf2693 | 3111 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 3112 | if (!cb4) { |
cfa969e3 | 3113 | ehea_error("no mem for cb4"); |
1acf2318 JBT |
3114 | ret = -ENOMEM; |
3115 | goto out; | |
7a291083 | 3116 | } else { |
1acf2318 | 3117 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
3118 | port->logical_port_id, |
3119 | H_PORT_CB4, | |
3120 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
3121 | if (hret == H_SUCCESS) { |
3122 | if (cb4->jumbo_frame) | |
1acf2318 | 3123 | *jumbo = 1; |
9c750b7d TK |
3124 | else { |
3125 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
3126 | hret = ehea_h_modify_ehea_port(port->adapter-> |
3127 | handle, | |
9c750b7d | 3128 | port-> |
1acf2318 | 3129 | logical_port_id, |
9c750b7d TK |
3130 | H_PORT_CB4, |
3131 | H_PORT_CB4_JUMBO, | |
3132 | cb4); | |
3133 | if (hret == H_SUCCESS) | |
1acf2318 | 3134 | *jumbo = 1; |
9c750b7d | 3135 | } |
1acf2318 JBT |
3136 | } else |
3137 | ret = -EINVAL; | |
3138 | ||
3faf2693 | 3139 | free_page((unsigned long)cb4); |
7a291083 | 3140 | } |
1acf2318 JBT |
3141 | out: |
3142 | return ret; | |
3143 | } | |
3144 | ||
3145 | static ssize_t ehea_show_port_id(struct device *dev, | |
3146 | struct device_attribute *attr, char *buf) | |
3147 | { | |
3148 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 3149 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
3150 | } |
3151 | ||
3152 | static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, | |
3153 | NULL); | |
3154 | ||
3155 | static void __devinit logical_port_release(struct device *dev) | |
3156 | { | |
3157 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
61c7a080 | 3158 | of_node_put(port->ofdev.dev.of_node); |
1acf2318 JBT |
3159 | } |
3160 | ||
3161 | static struct device *ehea_register_port(struct ehea_port *port, | |
3162 | struct device_node *dn) | |
3163 | { | |
3164 | int ret; | |
3165 | ||
61c7a080 | 3166 | port->ofdev.dev.of_node = of_node_get(dn); |
6b08f3ae | 3167 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 3168 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 3169 | |
db1d7bf7 | 3170 | dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++); |
1acf2318 JBT |
3171 | port->ofdev.dev.release = logical_port_release; |
3172 | ||
3173 | ret = of_device_register(&port->ofdev); | |
3174 | if (ret) { | |
cfa969e3 | 3175 | ehea_error("failed to register device. ret=%d", ret); |
1acf2318 JBT |
3176 | goto out; |
3177 | } | |
3178 | ||
3179 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 3180 | if (ret) { |
cfa969e3 | 3181 | ehea_error("failed to register attributes, ret=%d", ret); |
1acf2318 JBT |
3182 | goto out_unreg_of_dev; |
3183 | } | |
e542aa6b | 3184 | |
1acf2318 JBT |
3185 | return &port->ofdev.dev; |
3186 | ||
3187 | out_unreg_of_dev: | |
3188 | of_device_unregister(&port->ofdev); | |
3189 | out: | |
3190 | return NULL; | |
3191 | } | |
3192 | ||
3193 | static void ehea_unregister_port(struct ehea_port *port) | |
3194 | { | |
3195 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
3196 | of_device_unregister(&port->ofdev); | |
3197 | } | |
3198 | ||
086c1b2c TK |
3199 | static const struct net_device_ops ehea_netdev_ops = { |
3200 | .ndo_open = ehea_open, | |
3201 | .ndo_stop = ehea_stop, | |
3202 | .ndo_start_xmit = ehea_start_xmit, | |
3203 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3204 | .ndo_poll_controller = ehea_netpoll, | |
3205 | #endif | |
3206 | .ndo_get_stats = ehea_get_stats, | |
3207 | .ndo_set_mac_address = ehea_set_mac_addr, | |
240c102d | 3208 | .ndo_validate_addr = eth_validate_addr, |
086c1b2c TK |
3209 | .ndo_set_multicast_list = ehea_set_multicast_list, |
3210 | .ndo_change_mtu = ehea_change_mtu, | |
3211 | .ndo_vlan_rx_register = ehea_vlan_rx_register, | |
3212 | .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid, | |
32e8f9a8 AB |
3213 | .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid, |
3214 | .ndo_tx_timeout = ehea_tx_watchdog, | |
086c1b2c TK |
3215 | }; |
3216 | ||
1acf2318 JBT |
3217 | struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, |
3218 | u32 logical_port_id, | |
3219 | struct device_node *dn) | |
3220 | { | |
3221 | int ret; | |
3222 | struct net_device *dev; | |
3223 | struct ehea_port *port; | |
3224 | struct device *port_dev; | |
3225 | int jumbo; | |
3226 | ||
3227 | /* allocate memory for the port structures */ | |
3228 | dev = alloc_etherdev(sizeof(struct ehea_port)); | |
3229 | ||
3230 | if (!dev) { | |
cfa969e3 | 3231 | ehea_error("no mem for net_device"); |
1acf2318 JBT |
3232 | ret = -ENOMEM; |
3233 | goto out_err; | |
3234 | } | |
3235 | ||
3236 | port = netdev_priv(dev); | |
3237 | ||
a5af6ad3 | 3238 | mutex_init(&port->port_lock); |
1acf2318 JBT |
3239 | port->state = EHEA_PORT_DOWN; |
3240 | port->sig_comp_iv = sq_entries / 10; | |
3241 | ||
3242 | port->adapter = adapter; | |
3243 | port->netdev = dev; | |
3244 | port->logical_port_id = logical_port_id; | |
3245 | ||
3246 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
3247 | ||
3248 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
3249 | if (!port->mc_list) { | |
3250 | ret = -ENOMEM; | |
3251 | goto out_free_ethdev; | |
3252 | } | |
3253 | ||
3254 | INIT_LIST_HEAD(&port->mc_list->list); | |
3255 | ||
3256 | ret = ehea_sense_port_attr(port); | |
3257 | if (ret) | |
3258 | goto out_free_mc_list; | |
3259 | ||
3260 | port_dev = ehea_register_port(port, dn); | |
3261 | if (!port_dev) | |
3262 | goto out_free_mc_list; | |
3263 | ||
3264 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
3265 | |
3266 | /* initialize net_device structure */ | |
7a291083 JBT |
3267 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
3268 | ||
086c1b2c TK |
3269 | dev->netdev_ops = &ehea_netdev_ops; |
3270 | ehea_set_ethtool_ops(dev); | |
3271 | ||
7a291083 | 3272 | dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO |
dc01c447 | 3273 | | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX |
7a291083 JBT |
3274 | | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER |
3275 | | NETIF_F_LLTX; | |
7a291083 JBT |
3276 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; |
3277 | ||
c7757fdb BL |
3278 | if (use_lro) |
3279 | dev->features |= NETIF_F_LRO; | |
3280 | ||
c4028958 | 3281 | INIT_WORK(&port->reset_task, ehea_reset_port); |
7a291083 JBT |
3282 | |
3283 | ret = register_netdev(dev); | |
3284 | if (ret) { | |
cfa969e3 | 3285 | ehea_error("register_netdev failed. ret=%d", ret); |
21eee2dd | 3286 | goto out_unreg_port; |
7a291083 JBT |
3287 | } |
3288 | ||
d4dc4ec9 JBT |
3289 | port->lro_max_aggr = lro_max_aggr; |
3290 | ||
1acf2318 | 3291 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 3292 | if (ret) |
cfa969e3 DM |
3293 | ehea_error("failed determining jumbo frame status for %s", |
3294 | port->netdev->name); | |
1acf2318 | 3295 | |
cfa969e3 DM |
3296 | ehea_info("%s: Jumbo frames are %sabled", dev->name, |
3297 | jumbo == 1 ? "en" : "dis"); | |
9c750b7d | 3298 | |
44c82152 TK |
3299 | adapter->active_ports++; |
3300 | ||
1acf2318 | 3301 | return port; |
7a291083 | 3302 | |
1acf2318 JBT |
3303 | out_unreg_port: |
3304 | ehea_unregister_port(port); | |
3305 | ||
3306 | out_free_mc_list: | |
7a291083 | 3307 | kfree(port->mc_list); |
1acf2318 JBT |
3308 | |
3309 | out_free_ethdev: | |
3310 | free_netdev(dev); | |
3311 | ||
3312 | out_err: | |
cfa969e3 DM |
3313 | ehea_error("setting up logical port with id=%d failed, ret=%d", |
3314 | logical_port_id, ret); | |
1acf2318 JBT |
3315 | return NULL; |
3316 | } | |
3317 | ||
3318 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
3319 | { | |
7fb1c2ac | 3320 | struct ehea_adapter *adapter = port->adapter; |
1acf2318 JBT |
3321 | unregister_netdev(port->netdev); |
3322 | ehea_unregister_port(port); | |
3323 | kfree(port->mc_list); | |
3324 | free_netdev(port->netdev); | |
7fb1c2ac | 3325 | adapter->active_ports--; |
7a291083 JBT |
3326 | } |
3327 | ||
3328 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
3329 | { | |
1acf2318 JBT |
3330 | struct device_node *lhea_dn; |
3331 | struct device_node *eth_dn = NULL; | |
d1d25aab | 3332 | |
9f9a3b8a | 3333 | const u32 *dn_log_port_id; |
1acf2318 JBT |
3334 | int i = 0; |
3335 | ||
61c7a080 | 3336 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3337 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3338 | |
40cd3a45 | 3339 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3340 | NULL); |
1acf2318 | 3341 | if (!dn_log_port_id) { |
cfa969e3 DM |
3342 | ehea_error("bad device node: eth_dn name=%s", |
3343 | eth_dn->full_name); | |
1acf2318 JBT |
3344 | continue; |
3345 | } | |
7a291083 | 3346 | |
1211bb6d | 3347 | if (ehea_add_adapter_mr(adapter)) { |
cfa969e3 | 3348 | ehea_error("creating MR failed"); |
1211bb6d TK |
3349 | of_node_put(eth_dn); |
3350 | return -EIO; | |
3351 | } | |
3352 | ||
1acf2318 JBT |
3353 | adapter->port[i] = ehea_setup_single_port(adapter, |
3354 | *dn_log_port_id, | |
3355 | eth_dn); | |
7a291083 | 3356 | if (adapter->port[i]) |
cfa969e3 DM |
3357 | ehea_info("%s -> logical port id #%d", |
3358 | adapter->port[i]->netdev->name, | |
3359 | *dn_log_port_id); | |
1211bb6d TK |
3360 | else |
3361 | ehea_remove_adapter_mr(adapter); | |
3362 | ||
1acf2318 | 3363 | i++; |
ee289b64 | 3364 | } |
1211bb6d | 3365 | return 0; |
1acf2318 JBT |
3366 | } |
3367 | ||
e542aa6b JBT |
3368 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3369 | u32 logical_port_id) | |
1acf2318 JBT |
3370 | { |
3371 | struct device_node *lhea_dn; | |
3372 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3373 | const u32 *dn_log_port_id; |
1acf2318 | 3374 | |
61c7a080 | 3375 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3376 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3377 | |
40cd3a45 | 3378 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3379 | NULL); |
1acf2318 JBT |
3380 | if (dn_log_port_id) |
3381 | if (*dn_log_port_id == logical_port_id) | |
3382 | return eth_dn; | |
ee289b64 | 3383 | } |
1acf2318 JBT |
3384 | |
3385 | return NULL; | |
3386 | } | |
3387 | ||
3388 | static ssize_t ehea_probe_port(struct device *dev, | |
3389 | struct device_attribute *attr, | |
3390 | const char *buf, size_t count) | |
3391 | { | |
c7ae011d | 3392 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3393 | struct ehea_port *port; |
3394 | struct device_node *eth_dn = NULL; | |
3395 | int i; | |
3396 | ||
3397 | u32 logical_port_id; | |
3398 | ||
a8e34fda | 3399 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3400 | |
3401 | port = ehea_get_port(adapter, logical_port_id); | |
3402 | ||
3403 | if (port) { | |
cfa969e3 DM |
3404 | ehea_info("adding port with logical port id=%d failed. port " |
3405 | "already configured as %s.", logical_port_id, | |
3406 | port->netdev->name); | |
1acf2318 | 3407 | return -EINVAL; |
7a291083 | 3408 | } |
e542aa6b | 3409 | |
1acf2318 | 3410 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3411 | |
1acf2318 | 3412 | if (!eth_dn) { |
cfa969e3 | 3413 | ehea_info("no logical port with id %d found", logical_port_id); |
1acf2318 JBT |
3414 | return -EINVAL; |
3415 | } | |
e542aa6b | 3416 | |
1211bb6d | 3417 | if (ehea_add_adapter_mr(adapter)) { |
cfa969e3 | 3418 | ehea_error("creating MR failed"); |
1211bb6d TK |
3419 | return -EIO; |
3420 | } | |
3421 | ||
1acf2318 | 3422 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3423 | |
1eef4e04 JBT |
3424 | of_node_put(eth_dn); |
3425 | ||
1acf2318 | 3426 | if (port) { |
508d2b5d | 3427 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3428 | if (!adapter->port[i]) { |
3429 | adapter->port[i] = port; | |
3430 | break; | |
3431 | } | |
7a291083 | 3432 | |
cfa969e3 DM |
3433 | ehea_info("added %s (logical port id=%d)", port->netdev->name, |
3434 | logical_port_id); | |
1211bb6d TK |
3435 | } else { |
3436 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3437 | return -EIO; |
1211bb6d | 3438 | } |
7a291083 | 3439 | |
1acf2318 JBT |
3440 | return (ssize_t) count; |
3441 | } | |
3442 | ||
3443 | static ssize_t ehea_remove_port(struct device *dev, | |
3444 | struct device_attribute *attr, | |
3445 | const char *buf, size_t count) | |
3446 | { | |
c7ae011d | 3447 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3448 | struct ehea_port *port; |
3449 | int i; | |
3450 | u32 logical_port_id; | |
3451 | ||
a8e34fda | 3452 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3453 | |
3454 | port = ehea_get_port(adapter, logical_port_id); | |
3455 | ||
3456 | if (port) { | |
cfa969e3 DM |
3457 | ehea_info("removed %s (logical port id=%d)", port->netdev->name, |
3458 | logical_port_id); | |
1acf2318 JBT |
3459 | |
3460 | ehea_shutdown_single_port(port); | |
3461 | ||
508d2b5d | 3462 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3463 | if (adapter->port[i] == port) { |
3464 | adapter->port[i] = NULL; | |
3465 | break; | |
3466 | } | |
3467 | } else { | |
cfa969e3 DM |
3468 | ehea_error("removing port with logical port id=%d failed. port " |
3469 | "not configured.", logical_port_id); | |
1acf2318 JBT |
3470 | return -EINVAL; |
3471 | } | |
3472 | ||
1211bb6d TK |
3473 | ehea_remove_adapter_mr(adapter); |
3474 | ||
1acf2318 JBT |
3475 | return (ssize_t) count; |
3476 | } | |
3477 | ||
3478 | static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); | |
3479 | static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); | |
3480 | ||
2dc11581 | 3481 | int ehea_create_device_sysfs(struct platform_device *dev) |
1acf2318 | 3482 | { |
6b08f3ae | 3483 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3484 | if (ret) |
3485 | goto out; | |
3486 | ||
6b08f3ae | 3487 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3488 | out: |
7a291083 JBT |
3489 | return ret; |
3490 | } | |
3491 | ||
2dc11581 | 3492 | void ehea_remove_device_sysfs(struct platform_device *dev) |
1acf2318 | 3493 | { |
6b08f3ae JF |
3494 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3495 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3496 | } |
3497 | ||
2dc11581 | 3498 | static int __devinit ehea_probe_adapter(struct platform_device *dev, |
1acf2318 | 3499 | const struct of_device_id *id) |
7a291083 JBT |
3500 | { |
3501 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3502 | const u64 *adapter_handle; |
7a291083 JBT |
3503 | int ret; |
3504 | ||
61c7a080 | 3505 | if (!dev || !dev->dev.of_node) { |
cfa969e3 | 3506 | ehea_error("Invalid ibmebus device probed"); |
1eef4e04 JBT |
3507 | return -EINVAL; |
3508 | } | |
3509 | ||
7a291083 JBT |
3510 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
3511 | if (!adapter) { | |
3512 | ret = -ENOMEM; | |
6b08f3ae | 3513 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3514 | goto out; |
3515 | } | |
3516 | ||
44c82152 TK |
3517 | list_add(&adapter->list, &adapter_list); |
3518 | ||
6b08f3ae | 3519 | adapter->ofdev = dev; |
1acf2318 | 3520 | |
61c7a080 | 3521 | adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle", |
d1d25aab | 3522 | NULL); |
061bf3cd TK |
3523 | if (adapter_handle) |
3524 | adapter->handle = *adapter_handle; | |
3525 | ||
3526 | if (!adapter->handle) { | |
6b08f3ae | 3527 | dev_err(&dev->dev, "failed getting handle for adapter" |
61c7a080 | 3528 | " '%s'\n", dev->dev.of_node->full_name); |
7a291083 JBT |
3529 | ret = -ENODEV; |
3530 | goto out_free_ad; | |
3531 | } | |
3532 | ||
7a291083 JBT |
3533 | adapter->pd = EHEA_PD_ID; |
3534 | ||
c7ae011d | 3535 | dev_set_drvdata(&dev->dev, adapter); |
7a291083 | 3536 | |
7a291083 JBT |
3537 | |
3538 | /* initialize adapter and ports */ | |
3539 | /* get adapter properties */ | |
3540 | ret = ehea_sense_adapter_attr(adapter); | |
3541 | if (ret) { | |
898eb71c | 3542 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3543 | goto out_free_ad; |
7a291083 | 3544 | } |
7a291083 JBT |
3545 | |
3546 | adapter->neq = ehea_create_eq(adapter, | |
3547 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3548 | if (!adapter->neq) { | |
1eef4e04 | 3549 | ret = -EIO; |
898eb71c | 3550 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3551 | goto out_free_ad; |
7a291083 JBT |
3552 | } |
3553 | ||
3554 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3555 | (unsigned long)adapter); | |
3556 | ||
6b08f3ae | 3557 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
38515e90 | 3558 | ehea_interrupt_neq, IRQF_DISABLED, |
7a291083 JBT |
3559 | "ehea_neq", adapter); |
3560 | if (ret) { | |
898eb71c | 3561 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
7a291083 JBT |
3562 | goto out_kill_eq; |
3563 | } | |
3564 | ||
1eef4e04 JBT |
3565 | ret = ehea_create_device_sysfs(dev); |
3566 | if (ret) | |
3bf76b81 | 3567 | goto out_free_irq; |
1acf2318 | 3568 | |
7a291083 JBT |
3569 | ret = ehea_setup_ports(adapter); |
3570 | if (ret) { | |
898eb71c | 3571 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3572 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3573 | } |
3574 | ||
3575 | ret = 0; | |
3576 | goto out; | |
3577 | ||
1acf2318 JBT |
3578 | out_rem_dev_sysfs: |
3579 | ehea_remove_device_sysfs(dev); | |
3580 | ||
7a291083 | 3581 | out_free_irq: |
6b08f3ae | 3582 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
7a291083 JBT |
3583 | |
3584 | out_kill_eq: | |
3585 | ehea_destroy_eq(adapter->neq); | |
3586 | ||
7a291083 | 3587 | out_free_ad: |
51621fbd | 3588 | list_del(&adapter->list); |
7a291083 | 3589 | kfree(adapter); |
21eee2dd | 3590 | |
7a291083 | 3591 | out: |
21eee2dd | 3592 | ehea_update_firmware_handles(); |
52e21b1b | 3593 | |
7a291083 JBT |
3594 | return ret; |
3595 | } | |
3596 | ||
2dc11581 | 3597 | static int __devexit ehea_remove(struct platform_device *dev) |
7a291083 | 3598 | { |
c7ae011d | 3599 | struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev); |
7a291083 JBT |
3600 | int i; |
3601 | ||
1acf2318 | 3602 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3603 | if (adapter->port[i]) { |
3604 | ehea_shutdown_single_port(adapter->port[i]); | |
3605 | adapter->port[i] = NULL; | |
3606 | } | |
1acf2318 JBT |
3607 | |
3608 | ehea_remove_device_sysfs(dev); | |
3609 | ||
3bf76b81 | 3610 | flush_scheduled_work(); |
7a291083 | 3611 | |
6b08f3ae | 3612 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3613 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3614 | |
3615 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3616 | ehea_remove_adapter_mr(adapter); |
44c82152 | 3617 | list_del(&adapter->list); |
7a291083 | 3618 | kfree(adapter); |
44c82152 | 3619 | |
21eee2dd | 3620 | ehea_update_firmware_handles(); |
21eee2dd | 3621 | |
7a291083 JBT |
3622 | return 0; |
3623 | } | |
3624 | ||
21eee2dd TK |
3625 | void ehea_crash_handler(void) |
3626 | { | |
3627 | int i; | |
3628 | ||
3629 | if (ehea_fw_handles.arr) | |
3630 | for (i = 0; i < ehea_fw_handles.num_entries; i++) | |
3631 | ehea_h_free_resource(ehea_fw_handles.arr[i].adh, | |
3632 | ehea_fw_handles.arr[i].fwh, | |
3633 | FORCE_FREE); | |
3634 | ||
3635 | if (ehea_bcmc_regs.arr) | |
3636 | for (i = 0; i < ehea_bcmc_regs.num_entries; i++) | |
3637 | ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh, | |
3638 | ehea_bcmc_regs.arr[i].port_id, | |
3639 | ehea_bcmc_regs.arr[i].reg_type, | |
3640 | ehea_bcmc_regs.arr[i].macaddr, | |
3641 | 0, H_DEREG_BCMC); | |
3642 | } | |
3643 | ||
48cfb14f HH |
3644 | static int ehea_mem_notifier(struct notifier_block *nb, |
3645 | unsigned long action, void *data) | |
3646 | { | |
a7c561f2 | 3647 | int ret = NOTIFY_BAD; |
d4f12daf | 3648 | struct memory_notify *arg = data; |
a7c561f2 | 3649 | |
099473c1 | 3650 | mutex_lock(&dlpar_mem_lock); |
a7c561f2 | 3651 | |
48cfb14f | 3652 | switch (action) { |
d4f12daf | 3653 | case MEM_CANCEL_OFFLINE: |
cfa969e3 | 3654 | ehea_info("memory offlining canceled"); |
d4f12daf HH |
3655 | /* Readd canceled memory block */ |
3656 | case MEM_ONLINE: | |
cfa969e3 | 3657 | ehea_info("memory is going online"); |
3876732c | 3658 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
d4f12daf | 3659 | if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages)) |
a7c561f2 | 3660 | goto out_unlock; |
3d6b892b | 3661 | ehea_rereg_mrs(); |
d4f12daf HH |
3662 | break; |
3663 | case MEM_GOING_OFFLINE: | |
cfa969e3 | 3664 | ehea_info("memory is going offline"); |
3876732c | 3665 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
d4f12daf | 3666 | if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages)) |
a7c561f2 | 3667 | goto out_unlock; |
3d6b892b | 3668 | ehea_rereg_mrs(); |
48cfb14f HH |
3669 | break; |
3670 | default: | |
3671 | break; | |
3672 | } | |
52e21b1b JBT |
3673 | |
3674 | ehea_update_firmware_handles(); | |
a7c561f2 | 3675 | ret = NOTIFY_OK; |
52e21b1b | 3676 | |
a7c561f2 TK |
3677 | out_unlock: |
3678 | mutex_unlock(&dlpar_mem_lock); | |
a7c561f2 | 3679 | return ret; |
48cfb14f HH |
3680 | } |
3681 | ||
3682 | static struct notifier_block ehea_mem_nb = { | |
3683 | .notifier_call = ehea_mem_notifier, | |
3684 | }; | |
3685 | ||
2a6f4e49 JBT |
3686 | static int ehea_reboot_notifier(struct notifier_block *nb, |
3687 | unsigned long action, void *unused) | |
3688 | { | |
3689 | if (action == SYS_RESTART) { | |
cfa969e3 | 3690 | ehea_info("Reboot: freeing all eHEA resources"); |
2a6f4e49 JBT |
3691 | ibmebus_unregister_driver(&ehea_driver); |
3692 | } | |
3693 | return NOTIFY_DONE; | |
3694 | } | |
3695 | ||
3696 | static struct notifier_block ehea_reboot_nb = { | |
508d2b5d | 3697 | .notifier_call = ehea_reboot_notifier, |
2a6f4e49 JBT |
3698 | }; |
3699 | ||
7a291083 JBT |
3700 | static int check_module_parm(void) |
3701 | { | |
3702 | int ret = 0; | |
3703 | ||
3704 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3705 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
cfa969e3 | 3706 | ehea_info("Bad parameter: rq1_entries"); |
7a291083 JBT |
3707 | ret = -EINVAL; |
3708 | } | |
3709 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3710 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
cfa969e3 | 3711 | ehea_info("Bad parameter: rq2_entries"); |
7a291083 JBT |
3712 | ret = -EINVAL; |
3713 | } | |
3714 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3715 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
cfa969e3 | 3716 | ehea_info("Bad parameter: rq3_entries"); |
7a291083 JBT |
3717 | ret = -EINVAL; |
3718 | } | |
3719 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3720 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
cfa969e3 | 3721 | ehea_info("Bad parameter: sq_entries"); |
7a291083 JBT |
3722 | ret = -EINVAL; |
3723 | } | |
3724 | ||
3725 | return ret; | |
3726 | } | |
3727 | ||
4c3ca4da JBT |
3728 | static ssize_t ehea_show_capabilities(struct device_driver *drv, |
3729 | char *buf) | |
3730 | { | |
3731 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3732 | } | |
3733 | ||
3734 | static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, | |
3735 | ehea_show_capabilities, NULL); | |
3736 | ||
7a291083 JBT |
3737 | int __init ehea_module_init(void) |
3738 | { | |
3739 | int ret; | |
3740 | ||
cfa969e3 DM |
3741 | printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", |
3742 | DRV_VERSION); | |
7a291083 | 3743 | |
21eee2dd TK |
3744 | memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles)); |
3745 | memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs)); | |
3746 | ||
9f71a568 | 3747 | mutex_init(&ehea_fw_handles.lock); |
5c2cec14 | 3748 | spin_lock_init(&ehea_bcmc_regs.lock); |
44c82152 | 3749 | |
7a291083 JBT |
3750 | ret = check_module_parm(); |
3751 | if (ret) | |
3752 | goto out; | |
44c82152 TK |
3753 | |
3754 | ret = ehea_create_busmap(); | |
3755 | if (ret) | |
3756 | goto out; | |
3757 | ||
21eee2dd TK |
3758 | ret = register_reboot_notifier(&ehea_reboot_nb); |
3759 | if (ret) | |
cfa969e3 | 3760 | ehea_info("failed registering reboot notifier"); |
21eee2dd | 3761 | |
48cfb14f HH |
3762 | ret = register_memory_notifier(&ehea_mem_nb); |
3763 | if (ret) | |
cfa969e3 | 3764 | ehea_info("failed registering memory remove notifier"); |
48cfb14f | 3765 | |
c061b18d | 3766 | ret = crash_shutdown_register(ehea_crash_handler); |
21eee2dd | 3767 | if (ret) |
cfa969e3 | 3768 | ehea_info("failed registering crash handler"); |
2a6f4e49 | 3769 | |
7a291083 | 3770 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3771 | if (ret) { |
cfa969e3 | 3772 | ehea_error("failed registering eHEA device driver on ebus"); |
21eee2dd | 3773 | goto out2; |
4c3ca4da JBT |
3774 | } |
3775 | ||
3776 | ret = driver_create_file(&ehea_driver.driver, | |
3777 | &driver_attr_capabilities); | |
3778 | if (ret) { | |
cfa969e3 DM |
3779 | ehea_error("failed to register capabilities attribute, ret=%d", |
3780 | ret); | |
21eee2dd | 3781 | goto out3; |
4c3ca4da | 3782 | } |
7a291083 | 3783 | |
21eee2dd TK |
3784 | return ret; |
3785 | ||
3786 | out3: | |
3787 | ibmebus_unregister_driver(&ehea_driver); | |
3788 | out2: | |
48cfb14f | 3789 | unregister_memory_notifier(&ehea_mem_nb); |
21eee2dd | 3790 | unregister_reboot_notifier(&ehea_reboot_nb); |
c061b18d | 3791 | crash_shutdown_unregister(ehea_crash_handler); |
7a291083 JBT |
3792 | out: |
3793 | return ret; | |
3794 | } | |
3795 | ||
3796 | static void __exit ehea_module_exit(void) | |
3797 | { | |
21eee2dd TK |
3798 | int ret; |
3799 | ||
3bf76b81 | 3800 | flush_scheduled_work(); |
4c3ca4da | 3801 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3802 | ibmebus_unregister_driver(&ehea_driver); |
2a6f4e49 | 3803 | unregister_reboot_notifier(&ehea_reboot_nb); |
c061b18d | 3804 | ret = crash_shutdown_unregister(ehea_crash_handler); |
21eee2dd | 3805 | if (ret) |
cfa969e3 | 3806 | ehea_info("failed unregistering crash handler"); |
48cfb14f | 3807 | unregister_memory_notifier(&ehea_mem_nb); |
21eee2dd TK |
3808 | kfree(ehea_fw_handles.arr); |
3809 | kfree(ehea_bcmc_regs.arr); | |
44c82152 | 3810 | ehea_destroy_busmap(); |
7a291083 JBT |
3811 | } |
3812 | ||
3813 | module_init(ehea_module_init); | |
3814 | module_exit(ehea_module_exit); |