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Commit | Line | Data |
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de6cc651 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
7a291083 | 2 | /* |
3396c782 | 3 | * linux/drivers/net/ethernet/ibm/ehea/ehea_main.c |
7a291083 JBT |
4 | * |
5 | * eHEA ethernet device driver for IBM eServer System p | |
6 | * | |
7 | * (C) Copyright IBM Corp. 2006 | |
8 | * | |
9 | * Authors: | |
508d2b5d DM |
10 | * Christoph Raisch <raisch@de.ibm.com> |
11 | * Jan-Bernd Themann <themann@de.ibm.com> | |
12 | * Thomas Klein <tklein@de.ibm.com> | |
7a291083 JBT |
13 | */ |
14 | ||
8c4877a4 JP |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | ||
09b38aa1 | 17 | #include <linux/device.h> |
7a291083 JBT |
18 | #include <linux/in.h> |
19 | #include <linux/ip.h> | |
20 | #include <linux/tcp.h> | |
21 | #include <linux/udp.h> | |
22 | #include <linux/if.h> | |
23 | #include <linux/list.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
7a291083 | 25 | #include <linux/if_ether.h> |
2a6f4e49 JBT |
26 | #include <linux/notifier.h> |
27 | #include <linux/reboot.h> | |
48cfb14f | 28 | #include <linux/memory.h> |
21eee2dd | 29 | #include <asm/kexec.h> |
06f89edf | 30 | #include <linux/mutex.h> |
268bb0ce | 31 | #include <linux/prefetch.h> |
2a6f4e49 | 32 | |
7a291083 JBT |
33 | #include <net/ip.h> |
34 | ||
35 | #include "ehea.h" | |
36 | #include "ehea_qmr.h" | |
37 | #include "ehea_phyp.h" | |
38 | ||
39 | ||
40 | MODULE_LICENSE("GPL"); | |
41 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
42 | MODULE_DESCRIPTION("IBM eServer HEA Driver"); | |
43 | MODULE_VERSION(DRV_VERSION); | |
44 | ||
45 | ||
46 | static int msg_level = -1; | |
47 | static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; | |
48 | static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; | |
49 | static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; | |
50 | static int sq_entries = EHEA_DEF_ENTRIES_SQ; | |
b9564468 | 51 | static int use_mcs = 1; |
508d2b5d | 52 | static int prop_carrier_state; |
7a291083 JBT |
53 | |
54 | module_param(msg_level, int, 0); | |
55 | module_param(rq1_entries, int, 0); | |
56 | module_param(rq2_entries, int, 0); | |
57 | module_param(rq3_entries, int, 0); | |
58 | module_param(sq_entries, int, 0); | |
8759cf76 | 59 | module_param(prop_carrier_state, int, 0); |
18604c54 | 60 | module_param(use_mcs, int, 0); |
7a291083 JBT |
61 | |
62 | MODULE_PARM_DESC(msg_level, "msg_level"); | |
8759cf76 JBT |
63 | MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
64 | "port to stack. 1:yes, 0:no. Default = 0 "); | |
7a291083 | 65 | MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
31d17536 | 66 | "[2^x - 1], x = [7..14]. Default = " |
7a291083 JBT |
67 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); |
68 | MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " | |
31d17536 | 69 | "[2^x - 1], x = [7..14]. Default = " |
7a291083 JBT |
70 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); |
71 | MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " | |
31d17536 | 72 | "[2^x - 1], x = [7..14]. Default = " |
7a291083 JBT |
73 | __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); |
74 | MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " | |
31d17536 | 75 | "[2^x - 1], x = [7..14]. Default = " |
7a291083 | 76 | __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); |
b9564468 AB |
77 | MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, " |
78 | "Default = 1"); | |
7a291083 | 79 | |
508d2b5d | 80 | static int port_name_cnt; |
44c82152 | 81 | static LIST_HEAD(adapter_list); |
48e4cc77 | 82 | static unsigned long ehea_driver_flags; |
06f89edf | 83 | static DEFINE_MUTEX(dlpar_mem_lock); |
1886e5d2 TLSC |
84 | static struct ehea_fw_handle_array ehea_fw_handles; |
85 | static struct ehea_bcmc_reg_array ehea_bcmc_regs; | |
21eee2dd | 86 | |
d1dea38d | 87 | |
c45640e4 | 88 | static int ehea_probe_adapter(struct platform_device *dev); |
d1dea38d | 89 | |
0297be07 | 90 | static int ehea_remove(struct platform_device *dev); |
d1dea38d | 91 | |
abae1e07 | 92 | static const struct of_device_id ehea_module_device_table[] = { |
7a3a6212 OH |
93 | { |
94 | .name = "lhea", | |
95 | .compatible = "IBM,lhea", | |
96 | }, | |
97 | { | |
98 | .type = "network", | |
99 | .compatible = "IBM,lhea-ethernet", | |
100 | }, | |
101 | {}, | |
102 | }; | |
103 | MODULE_DEVICE_TABLE(of, ehea_module_device_table); | |
104 | ||
abae1e07 | 105 | static const struct of_device_id ehea_device_table[] = { |
d1dea38d TK |
106 | { |
107 | .name = "lhea", | |
108 | .compatible = "IBM,lhea", | |
109 | }, | |
110 | {}, | |
111 | }; | |
112 | ||
c45640e4 | 113 | static struct platform_driver ehea_driver = { |
4018294b GL |
114 | .driver = { |
115 | .name = "ehea", | |
116 | .owner = THIS_MODULE, | |
117 | .of_match_table = ehea_device_table, | |
118 | }, | |
d1dea38d TK |
119 | .probe = ehea_probe_adapter, |
120 | .remove = ehea_remove, | |
121 | }; | |
122 | ||
508d2b5d DM |
123 | void ehea_dump(void *adr, int len, char *msg) |
124 | { | |
7a291083 JBT |
125 | int x; |
126 | unsigned char *deb = adr; | |
127 | for (x = 0; x < len; x += 16) { | |
8c4877a4 JP |
128 | pr_info("%s adr=%p ofs=%04x %016llx %016llx\n", |
129 | msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8])); | |
7a291083 JBT |
130 | deb += 16; |
131 | } | |
132 | } | |
133 | ||
1886e5d2 | 134 | static void ehea_schedule_port_reset(struct ehea_port *port) |
2f69ae01 JBT |
135 | { |
136 | if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags)) | |
137 | schedule_work(&port->reset_task); | |
138 | } | |
139 | ||
21eee2dd TK |
140 | static void ehea_update_firmware_handles(void) |
141 | { | |
142 | struct ehea_fw_handle_entry *arr = NULL; | |
143 | struct ehea_adapter *adapter; | |
144 | int num_adapters = 0; | |
145 | int num_ports = 0; | |
146 | int num_portres = 0; | |
147 | int i = 0; | |
148 | int num_fw_handles, k, l; | |
149 | ||
150 | /* Determine number of handles */ | |
52e21b1b JBT |
151 | mutex_lock(&ehea_fw_handles.lock); |
152 | ||
21eee2dd TK |
153 | list_for_each_entry(adapter, &adapter_list, list) { |
154 | num_adapters++; | |
155 | ||
156 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
157 | struct ehea_port *port = adapter->port[k]; | |
158 | ||
159 | if (!port || (port->state != EHEA_PORT_UP)) | |
160 | continue; | |
161 | ||
162 | num_ports++; | |
723f28e4 | 163 | num_portres += port->num_def_qps; |
21eee2dd TK |
164 | } |
165 | } | |
166 | ||
167 | num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES + | |
168 | num_ports * EHEA_NUM_PORT_FW_HANDLES + | |
169 | num_portres * EHEA_NUM_PORTRES_FW_HANDLES; | |
170 | ||
171 | if (num_fw_handles) { | |
baeb2ffa | 172 | arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL); |
21eee2dd | 173 | if (!arr) |
52e21b1b | 174 | goto out; /* Keep the existing array */ |
21eee2dd TK |
175 | } else |
176 | goto out_update; | |
177 | ||
178 | list_for_each_entry(adapter, &adapter_list, list) { | |
52e21b1b JBT |
179 | if (num_adapters == 0) |
180 | break; | |
181 | ||
21eee2dd TK |
182 | for (k = 0; k < EHEA_MAX_PORTS; k++) { |
183 | struct ehea_port *port = adapter->port[k]; | |
184 | ||
8e95a202 JP |
185 | if (!port || (port->state != EHEA_PORT_UP) || |
186 | (num_ports == 0)) | |
21eee2dd TK |
187 | continue; |
188 | ||
723f28e4 | 189 | for (l = 0; l < port->num_def_qps; l++) { |
21eee2dd TK |
190 | struct ehea_port_res *pr = &port->port_res[l]; |
191 | ||
192 | arr[i].adh = adapter->handle; | |
193 | arr[i++].fwh = pr->qp->fw_handle; | |
194 | arr[i].adh = adapter->handle; | |
195 | arr[i++].fwh = pr->send_cq->fw_handle; | |
196 | arr[i].adh = adapter->handle; | |
197 | arr[i++].fwh = pr->recv_cq->fw_handle; | |
198 | arr[i].adh = adapter->handle; | |
199 | arr[i++].fwh = pr->eq->fw_handle; | |
200 | arr[i].adh = adapter->handle; | |
201 | arr[i++].fwh = pr->send_mr.handle; | |
202 | arr[i].adh = adapter->handle; | |
203 | arr[i++].fwh = pr->recv_mr.handle; | |
204 | } | |
205 | arr[i].adh = adapter->handle; | |
206 | arr[i++].fwh = port->qp_eq->fw_handle; | |
52e21b1b | 207 | num_ports--; |
21eee2dd TK |
208 | } |
209 | ||
210 | arr[i].adh = adapter->handle; | |
211 | arr[i++].fwh = adapter->neq->fw_handle; | |
212 | ||
213 | if (adapter->mr.handle) { | |
214 | arr[i].adh = adapter->handle; | |
215 | arr[i++].fwh = adapter->mr.handle; | |
216 | } | |
52e21b1b | 217 | num_adapters--; |
21eee2dd TK |
218 | } |
219 | ||
220 | out_update: | |
221 | kfree(ehea_fw_handles.arr); | |
222 | ehea_fw_handles.arr = arr; | |
223 | ehea_fw_handles.num_entries = i; | |
52e21b1b JBT |
224 | out: |
225 | mutex_unlock(&ehea_fw_handles.lock); | |
21eee2dd TK |
226 | } |
227 | ||
228 | static void ehea_update_bcmc_registrations(void) | |
229 | { | |
52e21b1b | 230 | unsigned long flags; |
21eee2dd TK |
231 | struct ehea_bcmc_reg_entry *arr = NULL; |
232 | struct ehea_adapter *adapter; | |
233 | struct ehea_mc_list *mc_entry; | |
234 | int num_registrations = 0; | |
235 | int i = 0; | |
236 | int k; | |
237 | ||
52e21b1b JBT |
238 | spin_lock_irqsave(&ehea_bcmc_regs.lock, flags); |
239 | ||
21eee2dd TK |
240 | /* Determine number of registrations */ |
241 | list_for_each_entry(adapter, &adapter_list, list) | |
242 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
243 | struct ehea_port *port = adapter->port[k]; | |
244 | ||
245 | if (!port || (port->state != EHEA_PORT_UP)) | |
246 | continue; | |
247 | ||
248 | num_registrations += 2; /* Broadcast registrations */ | |
249 | ||
250 | list_for_each_entry(mc_entry, &port->mc_list->list,list) | |
251 | num_registrations += 2; | |
252 | } | |
253 | ||
254 | if (num_registrations) { | |
baeb2ffa | 255 | arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC); |
21eee2dd | 256 | if (!arr) |
52e21b1b | 257 | goto out; /* Keep the existing array */ |
21eee2dd TK |
258 | } else |
259 | goto out_update; | |
260 | ||
261 | list_for_each_entry(adapter, &adapter_list, list) { | |
262 | for (k = 0; k < EHEA_MAX_PORTS; k++) { | |
263 | struct ehea_port *port = adapter->port[k]; | |
264 | ||
265 | if (!port || (port->state != EHEA_PORT_UP)) | |
266 | continue; | |
267 | ||
52e21b1b JBT |
268 | if (num_registrations == 0) |
269 | goto out_update; | |
270 | ||
21eee2dd TK |
271 | arr[i].adh = adapter->handle; |
272 | arr[i].port_id = port->logical_port_id; | |
273 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
274 | EHEA_BCMC_UNTAGGED; | |
275 | arr[i++].macaddr = port->mac_addr; | |
276 | ||
277 | arr[i].adh = adapter->handle; | |
278 | arr[i].port_id = port->logical_port_id; | |
279 | arr[i].reg_type = EHEA_BCMC_BROADCAST | | |
280 | EHEA_BCMC_VLANID_ALL; | |
281 | arr[i++].macaddr = port->mac_addr; | |
52e21b1b | 282 | num_registrations -= 2; |
21eee2dd TK |
283 | |
284 | list_for_each_entry(mc_entry, | |
285 | &port->mc_list->list, list) { | |
52e21b1b JBT |
286 | if (num_registrations == 0) |
287 | goto out_update; | |
288 | ||
21eee2dd TK |
289 | arr[i].adh = adapter->handle; |
290 | arr[i].port_id = port->logical_port_id; | |
5d384574 | 291 | arr[i].reg_type = EHEA_BCMC_MULTICAST | |
21eee2dd | 292 | EHEA_BCMC_UNTAGGED; |
5d384574 TLSC |
293 | if (mc_entry->macaddr == 0) |
294 | arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL; | |
21eee2dd TK |
295 | arr[i++].macaddr = mc_entry->macaddr; |
296 | ||
297 | arr[i].adh = adapter->handle; | |
298 | arr[i].port_id = port->logical_port_id; | |
5d384574 | 299 | arr[i].reg_type = EHEA_BCMC_MULTICAST | |
21eee2dd | 300 | EHEA_BCMC_VLANID_ALL; |
5d384574 TLSC |
301 | if (mc_entry->macaddr == 0) |
302 | arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL; | |
21eee2dd | 303 | arr[i++].macaddr = mc_entry->macaddr; |
52e21b1b | 304 | num_registrations -= 2; |
21eee2dd TK |
305 | } |
306 | } | |
307 | } | |
308 | ||
309 | out_update: | |
310 | kfree(ehea_bcmc_regs.arr); | |
311 | ehea_bcmc_regs.arr = arr; | |
312 | ehea_bcmc_regs.num_entries = i; | |
52e21b1b JBT |
313 | out: |
314 | spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags); | |
21eee2dd TK |
315 | } |
316 | ||
bc1f4470 | 317 | static void ehea_get_stats64(struct net_device *dev, |
318 | struct rtnl_link_stats64 *stats) | |
7a291083 JBT |
319 | { |
320 | struct ehea_port *port = netdev_priv(dev); | |
2aefcad8 | 321 | u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0; |
7a291083 JBT |
322 | int i; |
323 | ||
2aefcad8 | 324 | for (i = 0; i < port->num_def_qps; i++) { |
325 | rx_packets += port->port_res[i].rx_packets; | |
326 | rx_bytes += port->port_res[i].rx_bytes; | |
327 | } | |
328 | ||
723f28e4 | 329 | for (i = 0; i < port->num_def_qps; i++) { |
2aefcad8 | 330 | tx_packets += port->port_res[i].tx_packets; |
331 | tx_bytes += port->port_res[i].tx_bytes; | |
332 | } | |
333 | ||
334 | stats->tx_packets = tx_packets; | |
335 | stats->rx_bytes = rx_bytes; | |
336 | stats->tx_bytes = tx_bytes; | |
337 | stats->rx_packets = rx_packets; | |
338 | ||
09c1d446 ED |
339 | stats->multicast = port->stats.multicast; |
340 | stats->rx_errors = port->stats.rx_errors; | |
2aefcad8 | 341 | } |
342 | ||
343 | static void ehea_update_stats(struct work_struct *work) | |
344 | { | |
345 | struct ehea_port *port = | |
346 | container_of(work, struct ehea_port, stats_work.work); | |
347 | struct net_device *dev = port->netdev; | |
239c562c | 348 | struct rtnl_link_stats64 *stats = &port->stats; |
2aefcad8 | 349 | struct hcp_ehea_port_cb2 *cb2; |
350 | u64 hret; | |
7a291083 | 351 | |
3d8009c7 | 352 | cb2 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 353 | if (!cb2) { |
2aefcad8 | 354 | netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n"); |
355 | goto resched; | |
7a291083 JBT |
356 | } |
357 | ||
358 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
359 | port->logical_port_id, | |
360 | H_PORT_CB2, H_PORT_CB2_ALL, cb2); | |
361 | if (hret != H_SUCCESS) { | |
8c4877a4 | 362 | netdev_err(dev, "query_ehea_port failed\n"); |
7a291083 JBT |
363 | goto out_herr; |
364 | } | |
365 | ||
366 | if (netif_msg_hw(port)) | |
367 | ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); | |
368 | ||
7a291083 JBT |
369 | stats->multicast = cb2->rxmcp; |
370 | stats->rx_errors = cb2->rxuerr; | |
7a291083 JBT |
371 | |
372 | out_herr: | |
3faf2693 | 373 | free_page((unsigned long)cb2); |
2aefcad8 | 374 | resched: |
67c170a2 AB |
375 | schedule_delayed_work(&port->stats_work, |
376 | round_jiffies_relative(msecs_to_jiffies(1000))); | |
7a291083 JBT |
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]) { | |
2c69448b | 402 | pr->rq1_skba.os_skbs = fill_wqes - i; |
7a291083 JBT |
403 | break; |
404 | } | |
405 | } | |
406 | index--; | |
407 | index &= max_index_mask; | |
2c69448b | 408 | adder++; |
7a291083 | 409 | } |
2c69448b JBT |
410 | |
411 | if (adder == 0) | |
412 | return; | |
413 | ||
7a291083 | 414 | /* Ring doorbell */ |
2c69448b | 415 | ehea_update_rq1a(pr->qp, adder); |
7a291083 JBT |
416 | } |
417 | ||
e2878806 | 418 | static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) |
7a291083 | 419 | { |
7a291083 JBT |
420 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
421 | struct net_device *dev = pr->port->netdev; | |
422 | int i; | |
423 | ||
5c7e57f7 | 424 | if (nr_rq1a > pr->rq1_skba.len) { |
8c4877a4 | 425 | netdev_err(dev, "NR_RQ1A bigger than skb array len\n"); |
5c7e57f7 BL |
426 | return; |
427 | } | |
428 | ||
429 | for (i = 0; i < nr_rq1a; i++) { | |
7a291083 | 430 | skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); |
720a43ef | 431 | if (!skb_arr_rq1[i]) |
e2878806 | 432 | break; |
7a291083 JBT |
433 | } |
434 | /* Ring doorbell */ | |
f76957fc | 435 | ehea_update_rq1a(pr->qp, i - 1); |
7a291083 JBT |
436 | } |
437 | ||
438 | static int ehea_refill_rq_def(struct ehea_port_res *pr, | |
439 | struct ehea_q_skb_arr *q_skba, int rq_nr, | |
440 | int num_wqes, int wqe_type, int packet_size) | |
441 | { | |
442 | struct net_device *dev = pr->port->netdev; | |
443 | struct ehea_qp *qp = pr->qp; | |
444 | struct sk_buff **skb_arr = q_skba->arr; | |
445 | struct ehea_rwqe *rwqe; | |
446 | int i, index, max_index_mask, fill_wqes; | |
2c69448b | 447 | int adder = 0; |
7a291083 JBT |
448 | int ret = 0; |
449 | ||
450 | fill_wqes = q_skba->os_skbs + num_wqes; | |
2c69448b | 451 | q_skba->os_skbs = 0; |
7a291083 | 452 | |
2c69448b JBT |
453 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
454 | q_skba->os_skbs = fill_wqes; | |
7a291083 | 455 | return ret; |
2c69448b | 456 | } |
7a291083 JBT |
457 | |
458 | index = q_skba->index; | |
459 | max_index_mask = q_skba->len - 1; | |
460 | for (i = 0; i < fill_wqes; i++) { | |
2c69448b | 461 | u64 tmp_addr; |
89d71a66 ED |
462 | struct sk_buff *skb; |
463 | ||
464 | skb = netdev_alloc_skb_ip_align(dev, packet_size); | |
7a291083 | 465 | if (!skb) { |
7a291083 | 466 | q_skba->os_skbs = fill_wqes - i; |
e2878806 | 467 | if (q_skba->os_skbs == q_skba->len - 2) { |
8c4877a4 JP |
468 | netdev_info(pr->port->netdev, |
469 | "rq%i ran dry - no mem for skb\n", | |
470 | rq_nr); | |
e2878806 TK |
471 | ret = -ENOMEM; |
472 | } | |
7a291083 JBT |
473 | break; |
474 | } | |
7a291083 JBT |
475 | |
476 | skb_arr[index] = skb; | |
2c69448b JBT |
477 | tmp_addr = ehea_map_vaddr(skb->data); |
478 | if (tmp_addr == -1) { | |
cfbe4063 | 479 | dev_consume_skb_any(skb); |
2c69448b JBT |
480 | q_skba->os_skbs = fill_wqes - i; |
481 | ret = 0; | |
482 | break; | |
483 | } | |
7a291083 JBT |
484 | |
485 | rwqe = ehea_get_next_rwqe(qp, rq_nr); | |
486 | rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | |
d1d25aab | 487 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
7a291083 | 488 | rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
2c69448b | 489 | rwqe->sg_list[0].vaddr = tmp_addr; |
7a291083 JBT |
490 | rwqe->sg_list[0].len = packet_size; |
491 | rwqe->data_segments = 1; | |
492 | ||
493 | index++; | |
494 | index &= max_index_mask; | |
2c69448b | 495 | adder++; |
7a291083 | 496 | } |
44c82152 | 497 | |
7a291083 | 498 | q_skba->index = index; |
2c69448b JBT |
499 | if (adder == 0) |
500 | goto out; | |
7a291083 JBT |
501 | |
502 | /* Ring doorbell */ | |
503 | iosync(); | |
504 | if (rq_nr == 2) | |
2c69448b | 505 | ehea_update_rq2a(pr->qp, adder); |
7a291083 | 506 | else |
2c69448b | 507 | ehea_update_rq3a(pr->qp, adder); |
44c82152 | 508 | out: |
7a291083 JBT |
509 | return ret; |
510 | } | |
511 | ||
512 | ||
513 | static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) | |
514 | { | |
515 | return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, | |
516 | nr_of_wqes, EHEA_RWQE2_TYPE, | |
89d71a66 | 517 | EHEA_RQ2_PKT_SIZE); |
7a291083 JBT |
518 | } |
519 | ||
520 | ||
521 | static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) | |
522 | { | |
523 | return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, | |
524 | nr_of_wqes, EHEA_RWQE3_TYPE, | |
89d71a66 | 525 | EHEA_MAX_PACKET_SIZE); |
7a291083 JBT |
526 | } |
527 | ||
528 | static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) | |
529 | { | |
530 | *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; | |
531 | if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) | |
532 | return 0; | |
533 | if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && | |
534 | (cqe->header_length == 0)) | |
535 | return 0; | |
536 | return -EINVAL; | |
537 | } | |
538 | ||
539 | static inline void ehea_fill_skb(struct net_device *dev, | |
b9564468 AB |
540 | struct sk_buff *skb, struct ehea_cqe *cqe, |
541 | struct ehea_port_res *pr) | |
7a291083 JBT |
542 | { |
543 | int length = cqe->num_bytes_transfered - 4; /*remove CRC */ | |
544 | ||
545 | skb_put(skb, length); | |
7a291083 | 546 | skb->protocol = eth_type_trans(skb, dev); |
71085ce8 BL |
547 | |
548 | /* The packet was not an IPV4 packet so a complemented checksum was | |
549 | calculated. The value is found in the Internet Checksum field. */ | |
550 | if (cqe->status & EHEA_CQE_BLIND_CKSUM) { | |
551 | skb->ip_summed = CHECKSUM_COMPLETE; | |
552 | skb->csum = csum_unfold(~cqe->inet_checksum_value); | |
553 | } else | |
554 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
b9564468 AB |
555 | |
556 | skb_record_rx_queue(skb, pr - &pr->port->port_res[0]); | |
7a291083 JBT |
557 | } |
558 | ||
559 | static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, | |
560 | int arr_len, | |
561 | struct ehea_cqe *cqe) | |
562 | { | |
563 | int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
564 | struct sk_buff *skb; | |
565 | void *pref; | |
566 | int x; | |
567 | ||
568 | x = skb_index + 1; | |
569 | x &= (arr_len - 1); | |
570 | ||
571 | pref = skb_array[x]; | |
0b2febf3 HH |
572 | if (pref) { |
573 | prefetchw(pref); | |
574 | prefetchw(pref + EHEA_CACHE_LINE); | |
575 | ||
576 | pref = (skb_array[x]->data); | |
577 | prefetch(pref); | |
578 | prefetch(pref + EHEA_CACHE_LINE); | |
579 | prefetch(pref + EHEA_CACHE_LINE * 2); | |
580 | prefetch(pref + EHEA_CACHE_LINE * 3); | |
581 | } | |
582 | ||
7a291083 JBT |
583 | skb = skb_array[skb_index]; |
584 | skb_array[skb_index] = NULL; | |
585 | return skb; | |
586 | } | |
587 | ||
588 | static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, | |
589 | int arr_len, int wqe_index) | |
590 | { | |
591 | struct sk_buff *skb; | |
592 | void *pref; | |
593 | int x; | |
594 | ||
595 | x = wqe_index + 1; | |
596 | x &= (arr_len - 1); | |
597 | ||
598 | pref = skb_array[x]; | |
0b2febf3 HH |
599 | if (pref) { |
600 | prefetchw(pref); | |
601 | prefetchw(pref + EHEA_CACHE_LINE); | |
7a291083 | 602 | |
0b2febf3 HH |
603 | pref = (skb_array[x]->data); |
604 | prefetchw(pref); | |
605 | prefetchw(pref + EHEA_CACHE_LINE); | |
606 | } | |
7a291083 JBT |
607 | |
608 | skb = skb_array[wqe_index]; | |
609 | skb_array[wqe_index] = NULL; | |
610 | return skb; | |
611 | } | |
612 | ||
613 | static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, | |
614 | struct ehea_cqe *cqe, int *processed_rq2, | |
615 | int *processed_rq3) | |
616 | { | |
617 | struct sk_buff *skb; | |
618 | ||
acbddb59 JBT |
619 | if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
620 | pr->p_stats.err_tcp_cksum++; | |
621 | if (cqe->status & EHEA_CQE_STAT_ERR_IP) | |
622 | pr->p_stats.err_ip_cksum++; | |
623 | if (cqe->status & EHEA_CQE_STAT_ERR_CRC) | |
624 | pr->p_stats.err_frame_crc++; | |
625 | ||
7a291083 JBT |
626 | if (rq == 2) { |
627 | *processed_rq2 += 1; | |
628 | skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); | |
629 | dev_kfree_skb(skb); | |
630 | } else if (rq == 3) { | |
631 | *processed_rq3 += 1; | |
632 | skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); | |
633 | dev_kfree_skb(skb); | |
634 | } | |
635 | ||
636 | if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { | |
58dd8258 | 637 | if (netif_msg_rx_err(pr->port)) { |
8c4877a4 JP |
638 | pr_err("Critical receive error for QP %d. Resetting port.\n", |
639 | pr->qp->init_attr.qp_nr); | |
58dd8258 TK |
640 | ehea_dump(cqe, sizeof(*cqe), "CQE"); |
641 | } | |
2f69ae01 | 642 | ehea_schedule_port_reset(pr->port); |
7a291083 JBT |
643 | return 1; |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
bea3348e SH |
649 | static int ehea_proc_rwqes(struct net_device *dev, |
650 | struct ehea_port_res *pr, | |
651 | int budget) | |
7a291083 | 652 | { |
18604c54 | 653 | struct ehea_port *port = pr->port; |
7a291083 JBT |
654 | struct ehea_qp *qp = pr->qp; |
655 | struct ehea_cqe *cqe; | |
656 | struct sk_buff *skb; | |
657 | struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; | |
658 | struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; | |
659 | struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; | |
660 | int skb_arr_rq1_len = pr->rq1_skba.len; | |
661 | int skb_arr_rq2_len = pr->rq2_skba.len; | |
662 | int skb_arr_rq3_len = pr->rq3_skba.len; | |
663 | int processed, processed_rq1, processed_rq2, processed_rq3; | |
ce45b873 | 664 | u64 processed_bytes = 0; |
bea3348e | 665 | int wqe_index, last_wqe_index, rq, port_reset; |
7a291083 JBT |
666 | |
667 | processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; | |
668 | last_wqe_index = 0; | |
7a291083 | 669 | |
7a291083 | 670 | cqe = ehea_poll_rq1(qp, &wqe_index); |
bea3348e | 671 | while ((processed < budget) && cqe) { |
7a291083 JBT |
672 | ehea_inc_rq1(qp); |
673 | processed_rq1++; | |
674 | processed++; | |
7a291083 JBT |
675 | if (netif_msg_rx_status(port)) |
676 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
677 | ||
678 | last_wqe_index = wqe_index; | |
679 | rmb(); | |
680 | if (!ehea_check_cqe(cqe, &rq)) { | |
508d2b5d DM |
681 | if (rq == 1) { |
682 | /* LL RQ1 */ | |
7a291083 JBT |
683 | skb = get_skb_by_index_ll(skb_arr_rq1, |
684 | skb_arr_rq1_len, | |
685 | wqe_index); | |
686 | if (unlikely(!skb)) { | |
782615ae | 687 | netif_info(port, rx_err, dev, |
8c4877a4 | 688 | "LL rq1: skb=NULL\n"); |
18604c54 | 689 | |
bea3348e | 690 | skb = netdev_alloc_skb(dev, |
7a291083 | 691 | EHEA_L_PKT_SIZE); |
720a43ef | 692 | if (!skb) |
7a291083 JBT |
693 | break; |
694 | } | |
508d2b5d | 695 | skb_copy_to_linear_data(skb, ((char *)cqe) + 64, |
d1d25aab | 696 | cqe->num_bytes_transfered - 4); |
b9564468 | 697 | ehea_fill_skb(dev, skb, cqe, pr); |
508d2b5d DM |
698 | } else if (rq == 2) { |
699 | /* RQ2 */ | |
7a291083 JBT |
700 | skb = get_skb_by_index(skb_arr_rq2, |
701 | skb_arr_rq2_len, cqe); | |
702 | if (unlikely(!skb)) { | |
8c4877a4 JP |
703 | netif_err(port, rx_err, dev, |
704 | "rq2: skb=NULL\n"); | |
7a291083 JBT |
705 | break; |
706 | } | |
b9564468 | 707 | ehea_fill_skb(dev, skb, cqe, pr); |
7a291083 | 708 | processed_rq2++; |
508d2b5d DM |
709 | } else { |
710 | /* RQ3 */ | |
7a291083 JBT |
711 | skb = get_skb_by_index(skb_arr_rq3, |
712 | skb_arr_rq3_len, cqe); | |
713 | if (unlikely(!skb)) { | |
8c4877a4 JP |
714 | netif_err(port, rx_err, dev, |
715 | "rq3: skb=NULL\n"); | |
7a291083 JBT |
716 | break; |
717 | } | |
b9564468 | 718 | ehea_fill_skb(dev, skb, cqe, pr); |
7a291083 JBT |
719 | processed_rq3++; |
720 | } | |
721 | ||
ce45b873 | 722 | processed_bytes += skb->len; |
3428414f AB |
723 | |
724 | if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) | |
e5905c83 DM |
725 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
726 | cqe->vlan_tag); | |
3428414f AB |
727 | |
728 | napi_gro_receive(&pr->napi, skb); | |
18604c54 | 729 | } else { |
acbddb59 | 730 | pr->p_stats.poll_receive_errors++; |
7a291083 JBT |
731 | port_reset = ehea_treat_poll_error(pr, rq, cqe, |
732 | &processed_rq2, | |
733 | &processed_rq3); | |
734 | if (port_reset) | |
735 | break; | |
736 | } | |
737 | cqe = ehea_poll_rq1(qp, &wqe_index); | |
738 | } | |
739 | ||
7a291083 | 740 | pr->rx_packets += processed; |
ce45b873 | 741 | pr->rx_bytes += processed_bytes; |
7a291083 JBT |
742 | |
743 | ehea_refill_rq1(pr, last_wqe_index, processed_rq1); | |
744 | ehea_refill_rq2(pr, processed_rq2); | |
745 | ehea_refill_rq3(pr, processed_rq3); | |
746 | ||
bea3348e | 747 | return processed; |
7a291083 JBT |
748 | } |
749 | ||
2928db4c AD |
750 | #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull |
751 | ||
752 | static void reset_sq_restart_flag(struct ehea_port *port) | |
753 | { | |
754 | int i; | |
755 | ||
723f28e4 | 756 | for (i = 0; i < port->num_def_qps; i++) { |
2928db4c AD |
757 | struct ehea_port_res *pr = &port->port_res[i]; |
758 | pr->sq_restart_flag = 0; | |
759 | } | |
a8bb69f7 | 760 | wake_up(&port->restart_wq); |
2928db4c AD |
761 | } |
762 | ||
763 | static void check_sqs(struct ehea_port *port) | |
764 | { | |
765 | struct ehea_swqe *swqe; | |
766 | int swqe_index; | |
c1f9a93d | 767 | int i; |
2928db4c | 768 | |
723f28e4 | 769 | for (i = 0; i < port->num_def_qps; i++) { |
2928db4c | 770 | struct ehea_port_res *pr = &port->port_res[i]; |
a8bb69f7 | 771 | int ret; |
2928db4c AD |
772 | swqe = ehea_get_swqe(pr->qp, &swqe_index); |
773 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
774 | atomic_dec(&pr->swqe_avail); | |
775 | ||
776 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
777 | swqe->wr_id = SWQE_RESTART_CHECK; | |
778 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
779 | swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT; | |
780 | swqe->immediate_data_length = 80; | |
781 | ||
782 | ehea_post_swqe(pr->qp, swqe); | |
783 | ||
a8bb69f7 BL |
784 | ret = wait_event_timeout(port->restart_wq, |
785 | pr->sq_restart_flag == 0, | |
786 | msecs_to_jiffies(100)); | |
787 | ||
788 | if (!ret) { | |
8c4877a4 | 789 | pr_err("HW/SW queues out of sync\n"); |
a8bb69f7 BL |
790 | ehea_schedule_port_reset(pr->port); |
791 | return; | |
2928db4c AD |
792 | } |
793 | } | |
2928db4c AD |
794 | } |
795 | ||
796 | ||
18604c54 | 797 | static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
7a291083 | 798 | { |
acbddb59 | 799 | struct sk_buff *skb; |
7a291083 JBT |
800 | struct ehea_cq *send_cq = pr->send_cq; |
801 | struct ehea_cqe *cqe; | |
18604c54 | 802 | int quota = my_quota; |
7a291083 JBT |
803 | int cqe_counter = 0; |
804 | int swqe_av = 0; | |
acbddb59 | 805 | int index; |
b9564468 AB |
806 | struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev, |
807 | pr - &pr->port->port_res[0]); | |
7a291083 | 808 | |
18604c54 | 809 | cqe = ehea_poll_cq(send_cq); |
508d2b5d | 810 | while (cqe && (quota > 0)) { |
18604c54 JBT |
811 | ehea_inc_cq(send_cq); |
812 | ||
7a291083 JBT |
813 | cqe_counter++; |
814 | rmb(); | |
2928db4c AD |
815 | |
816 | if (cqe->wr_id == SWQE_RESTART_CHECK) { | |
817 | pr->sq_restart_flag = 1; | |
818 | swqe_av++; | |
819 | break; | |
820 | } | |
821 | ||
7a291083 | 822 | if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { |
8c4877a4 JP |
823 | pr_err("Bad send completion status=0x%04X\n", |
824 | cqe->status); | |
ea96ceac | 825 | |
7a291083 JBT |
826 | if (netif_msg_tx_err(pr->port)) |
827 | ehea_dump(cqe, sizeof(*cqe), "Send CQE"); | |
ea96ceac TK |
828 | |
829 | if (cqe->status & EHEA_CQE_STAT_RESET_MASK) { | |
8c4877a4 | 830 | pr_err("Resetting port\n"); |
ea96ceac TK |
831 | ehea_schedule_port_reset(pr->port); |
832 | break; | |
833 | } | |
7a291083 JBT |
834 | } |
835 | ||
836 | if (netif_msg_tx_done(pr->port)) | |
837 | ehea_dump(cqe, sizeof(*cqe), "CQE"); | |
838 | ||
839 | if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) | |
acbddb59 JBT |
840 | == EHEA_SWQE2_TYPE)) { |
841 | ||
842 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); | |
843 | skb = pr->sq_skba.arr[index]; | |
cfbe4063 | 844 | dev_consume_skb_any(skb); |
acbddb59 JBT |
845 | pr->sq_skba.arr[index] = NULL; |
846 | } | |
7a291083 JBT |
847 | |
848 | swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); | |
849 | quota--; | |
18604c54 JBT |
850 | |
851 | cqe = ehea_poll_cq(send_cq); | |
ee289b64 | 852 | } |
7a291083 JBT |
853 | |
854 | ehea_update_feca(send_cq, cqe_counter); | |
855 | atomic_add(swqe_av, &pr->swqe_avail); | |
856 | ||
b9564468 AB |
857 | if (unlikely(netif_tx_queue_stopped(txq) && |
858 | (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) { | |
859 | __netif_tx_lock(txq, smp_processor_id()); | |
860 | if (netif_tx_queue_stopped(txq) && | |
861 | (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th)) | |
862 | netif_tx_wake_queue(txq); | |
863 | __netif_tx_unlock(txq); | |
7a291083 | 864 | } |
b9564468 | 865 | |
5b27d427 | 866 | wake_up(&pr->port->swqe_avail_wq); |
7a291083 | 867 | |
18604c54 | 868 | return cqe; |
7a291083 JBT |
869 | } |
870 | ||
bea3348e | 871 | #define EHEA_POLL_MAX_CQES 65535 |
18604c54 | 872 | |
bea3348e | 873 | static int ehea_poll(struct napi_struct *napi, int budget) |
7a291083 | 874 | { |
508d2b5d DM |
875 | struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, |
876 | napi); | |
bea3348e | 877 | struct net_device *dev = pr->port->netdev; |
18604c54 JBT |
878 | struct ehea_cqe *cqe; |
879 | struct ehea_cqe *cqe_skb = NULL; | |
222ca96b | 880 | int wqe_index; |
bea3348e | 881 | int rx = 0; |
18604c54 | 882 | |
bea3348e | 883 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
222ca96b | 884 | rx += ehea_proc_rwqes(dev, pr, budget - rx); |
bea3348e | 885 | |
222ca96b | 886 | while (rx != budget) { |
288379f0 | 887 | napi_complete(napi); |
18604c54 JBT |
888 | ehea_reset_cq_ep(pr->recv_cq); |
889 | ehea_reset_cq_ep(pr->send_cq); | |
890 | ehea_reset_cq_n1(pr->recv_cq); | |
891 | ehea_reset_cq_n1(pr->send_cq); | |
a91fb143 | 892 | rmb(); |
18604c54 JBT |
893 | cqe = ehea_poll_rq1(pr->qp, &wqe_index); |
894 | cqe_skb = ehea_poll_cq(pr->send_cq); | |
895 | ||
e542aa6b | 896 | if (!cqe && !cqe_skb) |
bea3348e | 897 | return rx; |
18604c54 | 898 | |
288379f0 | 899 | if (!napi_reschedule(napi)) |
bea3348e | 900 | return rx; |
18604c54 | 901 | |
bea3348e SH |
902 | cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
903 | rx += ehea_proc_rwqes(dev, pr, budget - rx); | |
904 | } | |
e542aa6b | 905 | |
bea3348e | 906 | return rx; |
7a291083 JBT |
907 | } |
908 | ||
7d12e780 | 909 | static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
7a291083 JBT |
910 | { |
911 | struct ehea_port_res *pr = param; | |
18604c54 | 912 | |
288379f0 | 913 | napi_schedule(&pr->napi); |
18604c54 | 914 | |
7a291083 JBT |
915 | return IRQ_HANDLED; |
916 | } | |
917 | ||
7d12e780 | 918 | static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
7a291083 JBT |
919 | { |
920 | struct ehea_port *port = param; | |
921 | struct ehea_eqe *eqe; | |
d2db9eea | 922 | struct ehea_qp *qp; |
7a291083 | 923 | u32 qp_token; |
ea96ceac TK |
924 | u64 resource_type, aer, aerr; |
925 | int reset_port = 0; | |
7a291083 JBT |
926 | |
927 | eqe = ehea_poll_eq(port->qp_eq); | |
bb3a6449 | 928 | |
7a291083 | 929 | while (eqe) { |
7a291083 | 930 | qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
8c4877a4 JP |
931 | pr_err("QP aff_err: entry=0x%llx, token=0x%x\n", |
932 | eqe->entry, qp_token); | |
d2db9eea JBT |
933 | |
934 | qp = port->port_res[qp_token].qp; | |
ea96ceac TK |
935 | |
936 | resource_type = ehea_error_data(port->adapter, qp->fw_handle, | |
937 | &aer, &aerr); | |
938 | ||
939 | if (resource_type == EHEA_AER_RESTYPE_QP) { | |
940 | if ((aer & EHEA_AER_RESET_MASK) || | |
941 | (aerr & EHEA_AERR_RESET_MASK)) | |
942 | reset_port = 1; | |
943 | } else | |
944 | reset_port = 1; /* Reset in case of CQ or EQ error */ | |
945 | ||
bb3a6449 | 946 | eqe = ehea_poll_eq(port->qp_eq); |
7a291083 JBT |
947 | } |
948 | ||
ea96ceac | 949 | if (reset_port) { |
8c4877a4 | 950 | pr_err("Resetting port\n"); |
ea96ceac TK |
951 | ehea_schedule_port_reset(port); |
952 | } | |
d2db9eea | 953 | |
7a291083 JBT |
954 | return IRQ_HANDLED; |
955 | } | |
956 | ||
957 | static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, | |
958 | int logical_port) | |
959 | { | |
960 | int i; | |
961 | ||
1acf2318 | 962 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
41b69c70 | 963 | if (adapter->port[i]) |
d1d25aab | 964 | if (adapter->port[i]->logical_port_id == logical_port) |
41b69c70 | 965 | return adapter->port[i]; |
7a291083 JBT |
966 | return NULL; |
967 | } | |
968 | ||
969 | int ehea_sense_port_attr(struct ehea_port *port) | |
970 | { | |
971 | int ret; | |
972 | u64 hret; | |
973 | struct hcp_ehea_port_cb0 *cb0; | |
974 | ||
508d2b5d | 975 | /* may be called via ehea_neq_tasklet() */ |
3faf2693 | 976 | cb0 = (void *)get_zeroed_page(GFP_ATOMIC); |
508d2b5d | 977 | if (!cb0) { |
8c4877a4 | 978 | pr_err("no mem for cb0\n"); |
7a291083 JBT |
979 | ret = -ENOMEM; |
980 | goto out; | |
981 | } | |
982 | ||
983 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
984 | port->logical_port_id, H_PORT_CB0, | |
985 | EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), | |
986 | cb0); | |
987 | if (hret != H_SUCCESS) { | |
988 | ret = -EIO; | |
989 | goto out_free; | |
990 | } | |
991 | ||
992 | /* MAC address */ | |
993 | port->mac_addr = cb0->port_mac_addr << 16; | |
994 | ||
508d2b5d | 995 | if (!is_valid_ether_addr((u8 *)&port->mac_addr)) { |
7a291083 JBT |
996 | ret = -EADDRNOTAVAIL; |
997 | goto out_free; | |
998 | } | |
999 | ||
1000 | /* Port speed */ | |
1001 | switch (cb0->port_speed) { | |
1002 | case H_SPEED_10M_H: | |
1003 | port->port_speed = EHEA_SPEED_10M; | |
1004 | port->full_duplex = 0; | |
1005 | break; | |
1006 | case H_SPEED_10M_F: | |
1007 | port->port_speed = EHEA_SPEED_10M; | |
1008 | port->full_duplex = 1; | |
1009 | break; | |
1010 | case H_SPEED_100M_H: | |
1011 | port->port_speed = EHEA_SPEED_100M; | |
1012 | port->full_duplex = 0; | |
1013 | break; | |
1014 | case H_SPEED_100M_F: | |
1015 | port->port_speed = EHEA_SPEED_100M; | |
1016 | port->full_duplex = 1; | |
1017 | break; | |
1018 | case H_SPEED_1G_F: | |
1019 | port->port_speed = EHEA_SPEED_1G; | |
1020 | port->full_duplex = 1; | |
1021 | break; | |
1022 | case H_SPEED_10G_F: | |
1023 | port->port_speed = EHEA_SPEED_10G; | |
1024 | port->full_duplex = 1; | |
1025 | break; | |
1026 | default: | |
1027 | port->port_speed = 0; | |
1028 | port->full_duplex = 0; | |
1029 | break; | |
1030 | } | |
1031 | ||
e919b593 | 1032 | port->autoneg = 1; |
18604c54 | 1033 | port->num_mcs = cb0->num_default_qps; |
e919b593 | 1034 | |
7a291083 | 1035 | /* Number of default QPs */ |
18604c54 JBT |
1036 | if (use_mcs) |
1037 | port->num_def_qps = cb0->num_default_qps; | |
1038 | else | |
1039 | port->num_def_qps = 1; | |
7a291083 JBT |
1040 | |
1041 | if (!port->num_def_qps) { | |
1042 | ret = -EINVAL; | |
1043 | goto out_free; | |
1044 | } | |
1045 | ||
7a291083 JBT |
1046 | ret = 0; |
1047 | out_free: | |
1048 | if (ret || netif_msg_probe(port)) | |
1049 | ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); | |
3faf2693 | 1050 | free_page((unsigned long)cb0); |
7a291083 JBT |
1051 | out: |
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) | |
1056 | { | |
1057 | struct hcp_ehea_port_cb4 *cb4; | |
1058 | u64 hret; | |
1059 | int ret = 0; | |
1060 | ||
3faf2693 | 1061 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1062 | if (!cb4) { |
8c4877a4 | 1063 | pr_err("no mem for cb4\n"); |
7a291083 JBT |
1064 | ret = -ENOMEM; |
1065 | goto out; | |
1066 | } | |
1067 | ||
1068 | cb4->port_speed = port_speed; | |
1069 | ||
1070 | netif_carrier_off(port->netdev); | |
1071 | ||
1072 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1073 | port->logical_port_id, | |
1074 | H_PORT_CB4, H_PORT_CB4_SPEED, cb4); | |
1075 | if (hret == H_SUCCESS) { | |
1076 | port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; | |
1077 | ||
1078 | hret = ehea_h_query_ehea_port(port->adapter->handle, | |
1079 | port->logical_port_id, | |
1080 | H_PORT_CB4, H_PORT_CB4_SPEED, | |
1081 | cb4); | |
1082 | if (hret == H_SUCCESS) { | |
1083 | switch (cb4->port_speed) { | |
1084 | case H_SPEED_10M_H: | |
1085 | port->port_speed = EHEA_SPEED_10M; | |
1086 | port->full_duplex = 0; | |
1087 | break; | |
1088 | case H_SPEED_10M_F: | |
1089 | port->port_speed = EHEA_SPEED_10M; | |
1090 | port->full_duplex = 1; | |
1091 | break; | |
1092 | case H_SPEED_100M_H: | |
1093 | port->port_speed = EHEA_SPEED_100M; | |
1094 | port->full_duplex = 0; | |
1095 | break; | |
1096 | case H_SPEED_100M_F: | |
1097 | port->port_speed = EHEA_SPEED_100M; | |
1098 | port->full_duplex = 1; | |
1099 | break; | |
1100 | case H_SPEED_1G_F: | |
1101 | port->port_speed = EHEA_SPEED_1G; | |
1102 | port->full_duplex = 1; | |
1103 | break; | |
1104 | case H_SPEED_10G_F: | |
1105 | port->port_speed = EHEA_SPEED_10G; | |
1106 | port->full_duplex = 1; | |
1107 | break; | |
1108 | default: | |
1109 | port->port_speed = 0; | |
1110 | port->full_duplex = 0; | |
1111 | break; | |
1112 | } | |
1113 | } else { | |
8c4877a4 | 1114 | pr_err("Failed sensing port speed\n"); |
7a291083 JBT |
1115 | ret = -EIO; |
1116 | } | |
1117 | } else { | |
1118 | if (hret == H_AUTHORITY) { | |
8c4877a4 | 1119 | pr_info("Hypervisor denied setting port speed\n"); |
7a291083 JBT |
1120 | ret = -EPERM; |
1121 | } else { | |
1122 | ret = -EIO; | |
8c4877a4 | 1123 | pr_err("Failed setting port speed\n"); |
7a291083 JBT |
1124 | } |
1125 | } | |
8759cf76 JBT |
1126 | if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
1127 | netif_carrier_on(port->netdev); | |
1128 | ||
3faf2693 | 1129 | free_page((unsigned long)cb4); |
7a291083 JBT |
1130 | out: |
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) | |
1135 | { | |
1136 | int ret; | |
1137 | u8 ec; | |
1138 | u8 portnum; | |
1139 | struct ehea_port *port; | |
8c4877a4 | 1140 | struct net_device *dev; |
7a291083 JBT |
1141 | |
1142 | ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); | |
1143 | portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); | |
1144 | port = ehea_get_port(adapter, portnum); | |
1740c29a | 1145 | if (!port) { |
1146 | netdev_err(NULL, "unknown portnum %x\n", portnum); | |
1147 | return; | |
1148 | } | |
8c4877a4 | 1149 | dev = port->netdev; |
7a291083 JBT |
1150 | |
1151 | switch (ec) { | |
1152 | case EHEA_EC_PORTSTATE_CHG: /* port state change */ | |
1153 | ||
7a291083 | 1154 | if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { |
8c4877a4 | 1155 | if (!netif_carrier_ok(dev)) { |
1e1675cc | 1156 | ret = ehea_sense_port_attr(port); |
7a291083 | 1157 | if (ret) { |
8c4877a4 | 1158 | netdev_err(dev, "failed resensing port attributes\n"); |
7a291083 JBT |
1159 | break; |
1160 | } | |
1161 | ||
8c4877a4 JP |
1162 | netif_info(port, link, dev, |
1163 | "Logical port up: %dMbps %s Duplex\n", | |
1164 | port->port_speed, | |
1165 | port->full_duplex == 1 ? | |
1166 | "Full" : "Half"); | |
7a291083 | 1167 | |
8c4877a4 JP |
1168 | netif_carrier_on(dev); |
1169 | netif_wake_queue(dev); | |
7a291083 JBT |
1170 | } |
1171 | } else | |
8c4877a4 JP |
1172 | if (netif_carrier_ok(dev)) { |
1173 | netif_info(port, link, dev, | |
1174 | "Logical port down\n"); | |
1175 | netif_carrier_off(dev); | |
b9564468 | 1176 | netif_tx_disable(dev); |
7a291083 JBT |
1177 | } |
1178 | ||
1179 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { | |
8759cf76 | 1180 | port->phy_link = EHEA_PHY_LINK_UP; |
8c4877a4 JP |
1181 | netif_info(port, link, dev, |
1182 | "Physical port up\n"); | |
8759cf76 | 1183 | if (prop_carrier_state) |
8c4877a4 | 1184 | netif_carrier_on(dev); |
7a291083 | 1185 | } else { |
8759cf76 | 1186 | port->phy_link = EHEA_PHY_LINK_DOWN; |
8c4877a4 JP |
1187 | netif_info(port, link, dev, |
1188 | "Physical port down\n"); | |
8759cf76 | 1189 | if (prop_carrier_state) |
8c4877a4 | 1190 | netif_carrier_off(dev); |
7a291083 JBT |
1191 | } |
1192 | ||
1193 | if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) | |
8c4877a4 JP |
1194 | netdev_info(dev, |
1195 | "External switch port is primary port\n"); | |
7a291083 | 1196 | else |
8c4877a4 JP |
1197 | netdev_info(dev, |
1198 | "External switch port is backup port\n"); | |
7a291083 JBT |
1199 | |
1200 | break; | |
1201 | case EHEA_EC_ADAPTER_MALFUNC: | |
8c4877a4 | 1202 | netdev_err(dev, "Adapter malfunction\n"); |
7a291083 JBT |
1203 | break; |
1204 | case EHEA_EC_PORT_MALFUNC: | |
8c4877a4 JP |
1205 | netdev_info(dev, "Port malfunction\n"); |
1206 | netif_carrier_off(dev); | |
b9564468 | 1207 | netif_tx_disable(dev); |
7a291083 JBT |
1208 | break; |
1209 | default: | |
8c4877a4 | 1210 | netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe); |
7a291083 JBT |
1211 | break; |
1212 | } | |
1213 | } | |
1214 | ||
1215 | static void ehea_neq_tasklet(unsigned long data) | |
1216 | { | |
508d2b5d | 1217 | struct ehea_adapter *adapter = (struct ehea_adapter *)data; |
7a291083 JBT |
1218 | struct ehea_eqe *eqe; |
1219 | u64 event_mask; | |
1220 | ||
1221 | eqe = ehea_poll_eq(adapter->neq); | |
8c4877a4 | 1222 | pr_debug("eqe=%p\n", eqe); |
7a291083 JBT |
1223 | |
1224 | while (eqe) { | |
8c4877a4 | 1225 | pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry); |
7a291083 JBT |
1226 | ehea_parse_eqe(adapter, eqe->entry); |
1227 | eqe = ehea_poll_eq(adapter->neq); | |
8c4877a4 | 1228 | pr_debug("next eqe=%p\n", eqe); |
7a291083 JBT |
1229 | } |
1230 | ||
1231 | event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) | |
1232 | | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) | |
1233 | | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); | |
1234 | ||
1235 | ehea_h_reset_events(adapter->handle, | |
1236 | adapter->neq->fw_handle, event_mask); | |
1237 | } | |
1238 | ||
7d12e780 | 1239 | static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
7a291083 JBT |
1240 | { |
1241 | struct ehea_adapter *adapter = param; | |
1242 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
1243 | return IRQ_HANDLED; | |
1244 | } | |
1245 | ||
1246 | ||
1247 | static int ehea_fill_port_res(struct ehea_port_res *pr) | |
1248 | { | |
1249 | int ret; | |
1250 | struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; | |
1251 | ||
f76957fc | 1252 | ehea_init_fill_rq1(pr, pr->rq1_skba.len); |
7a291083 | 1253 | |
e2878806 | 1254 | ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); |
7a291083 JBT |
1255 | |
1256 | ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); | |
1257 | ||
1258 | return ret; | |
1259 | } | |
1260 | ||
1261 | static int ehea_reg_interrupts(struct net_device *dev) | |
1262 | { | |
1263 | struct ehea_port *port = netdev_priv(dev); | |
1264 | struct ehea_port_res *pr; | |
1265 | int i, ret; | |
1266 | ||
7a291083 JBT |
1267 | |
1268 | snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", | |
1269 | dev->name); | |
1270 | ||
6b08f3ae | 1271 | ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
7a291083 | 1272 | ehea_qp_aff_irq_handler, |
46c915f8 | 1273 | 0, port->int_aff_name, port); |
7a291083 | 1274 | if (ret) { |
8c4877a4 JP |
1275 | netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n", |
1276 | port->qp_eq->attr.ist1); | |
7a291083 JBT |
1277 | goto out_free_qpeq; |
1278 | } | |
1279 | ||
8c4877a4 JP |
1280 | netif_info(port, ifup, dev, |
1281 | "irq_handle 0x%X for function qp_aff_irq_handler registered\n", | |
1282 | port->qp_eq->attr.ist1); | |
7a291083 | 1283 | |
18604c54 | 1284 | |
723f28e4 | 1285 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 JBT |
1286 | pr = &port->port_res[i]; |
1287 | snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, | |
18604c54 | 1288 | "%s-queue%d", dev->name, i); |
6b08f3ae | 1289 | ret = ibmebus_request_irq(pr->eq->attr.ist1, |
18604c54 | 1290 | ehea_recv_irq_handler, |
46c915f8 | 1291 | 0, pr->int_send_name, pr); |
7a291083 | 1292 | if (ret) { |
8c4877a4 JP |
1293 | netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n", |
1294 | i, pr->eq->attr.ist1); | |
7a291083 JBT |
1295 | goto out_free_req; |
1296 | } | |
8c4877a4 JP |
1297 | netif_info(port, ifup, dev, |
1298 | "irq_handle 0x%X for function ehea_queue_int %d registered\n", | |
1299 | pr->eq->attr.ist1, i); | |
7a291083 JBT |
1300 | } |
1301 | out: | |
1302 | return ret; | |
1303 | ||
18604c54 | 1304 | |
7a291083 JBT |
1305 | out_free_req: |
1306 | while (--i >= 0) { | |
18604c54 | 1307 | u32 ist = port->port_res[i].eq->attr.ist1; |
6b08f3ae | 1308 | ibmebus_free_irq(ist, &port->port_res[i]); |
7a291083 | 1309 | } |
18604c54 | 1310 | |
7a291083 | 1311 | out_free_qpeq: |
6b08f3ae | 1312 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
7a291083 | 1313 | i = port->num_def_qps; |
18604c54 | 1314 | |
7a291083 | 1315 | goto out; |
18604c54 | 1316 | |
7a291083 JBT |
1317 | } |
1318 | ||
1319 | static void ehea_free_interrupts(struct net_device *dev) | |
1320 | { | |
1321 | struct ehea_port *port = netdev_priv(dev); | |
1322 | struct ehea_port_res *pr; | |
1323 | int i; | |
1324 | ||
1325 | /* send */ | |
18604c54 | 1326 | |
723f28e4 | 1327 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 | 1328 | pr = &port->port_res[i]; |
6b08f3ae | 1329 | ibmebus_free_irq(pr->eq->attr.ist1, pr); |
8c4877a4 JP |
1330 | netif_info(port, intr, dev, |
1331 | "free send irq for res %d with handle 0x%X\n", | |
1332 | i, pr->eq->attr.ist1); | |
7a291083 JBT |
1333 | } |
1334 | ||
1335 | /* associated events */ | |
6b08f3ae | 1336 | ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
8c4877a4 JP |
1337 | netif_info(port, intr, dev, |
1338 | "associated event interrupt for handle 0x%X freed\n", | |
1339 | port->qp_eq->attr.ist1); | |
7a291083 JBT |
1340 | } |
1341 | ||
1342 | static int ehea_configure_port(struct ehea_port *port) | |
1343 | { | |
1344 | int ret, i; | |
1345 | u64 hret, mask; | |
1346 | struct hcp_ehea_port_cb0 *cb0; | |
1347 | ||
1348 | ret = -ENOMEM; | |
3faf2693 | 1349 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
1350 | if (!cb0) |
1351 | goto out; | |
1352 | ||
1353 | cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) | |
1354 | | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) | |
1355 | | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) | |
1356 | | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) | |
1357 | | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, | |
1358 | PXLY_RC_VLAN_FILTER) | |
1359 | | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); | |
1360 | ||
18604c54 JBT |
1361 | for (i = 0; i < port->num_mcs; i++) |
1362 | if (use_mcs) | |
1363 | cb0->default_qpn_arr[i] = | |
1364 | port->port_res[i].qp->init_attr.qp_nr; | |
1365 | else | |
1366 | cb0->default_qpn_arr[i] = | |
1367 | port->port_res[0].qp->init_attr.qp_nr; | |
e542aa6b | 1368 | |
7a291083 JBT |
1369 | if (netif_msg_ifup(port)) |
1370 | ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); | |
1371 | ||
1372 | mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) | |
1373 | | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); | |
1374 | ||
1375 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1376 | port->logical_port_id, | |
1377 | H_PORT_CB0, mask, cb0); | |
1378 | ret = -EIO; | |
1379 | if (hret != H_SUCCESS) | |
1380 | goto out_free; | |
1381 | ||
1382 | ret = 0; | |
1383 | ||
1384 | out_free: | |
3faf2693 | 1385 | free_page((unsigned long)cb0); |
7a291083 JBT |
1386 | out: |
1387 | return ret; | |
1388 | } | |
1389 | ||
1886e5d2 | 1390 | static int ehea_gen_smrs(struct ehea_port_res *pr) |
7a291083 | 1391 | { |
e542aa6b | 1392 | int ret; |
7a291083 JBT |
1393 | struct ehea_adapter *adapter = pr->port->adapter; |
1394 | ||
e542aa6b JBT |
1395 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
1396 | if (ret) | |
7a291083 JBT |
1397 | goto out; |
1398 | ||
e542aa6b JBT |
1399 | ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
1400 | if (ret) | |
1401 | goto out_free; | |
7a291083 JBT |
1402 | |
1403 | return 0; | |
1404 | ||
e542aa6b JBT |
1405 | out_free: |
1406 | ehea_rem_mr(&pr->send_mr); | |
7a291083 | 1407 | out: |
8c4877a4 | 1408 | pr_err("Generating SMRS failed\n"); |
7a291083 JBT |
1409 | return -EIO; |
1410 | } | |
1411 | ||
1886e5d2 | 1412 | static int ehea_rem_smrs(struct ehea_port_res *pr) |
7a291083 | 1413 | { |
8e95a202 JP |
1414 | if ((ehea_rem_mr(&pr->send_mr)) || |
1415 | (ehea_rem_mr(&pr->recv_mr))) | |
e542aa6b JBT |
1416 | return -EIO; |
1417 | else | |
1418 | return 0; | |
7a291083 JBT |
1419 | } |
1420 | ||
1421 | static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) | |
1422 | { | |
508d2b5d | 1423 | int arr_size = sizeof(void *) * max_q_entries; |
7a291083 | 1424 | |
89bf67f1 | 1425 | q_skba->arr = vzalloc(arr_size); |
7a291083 JBT |
1426 | if (!q_skba->arr) |
1427 | return -ENOMEM; | |
1428 | ||
7a291083 JBT |
1429 | q_skba->len = max_q_entries; |
1430 | q_skba->index = 0; | |
1431 | q_skba->os_skbs = 0; | |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | ||
1436 | static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, | |
1437 | struct port_res_cfg *pr_cfg, int queue_token) | |
1438 | { | |
1439 | struct ehea_adapter *adapter = port->adapter; | |
1440 | enum ehea_eq_type eq_type = EHEA_EQ; | |
1441 | struct ehea_qp_init_attr *init_attr = NULL; | |
1442 | int ret = -EIO; | |
ce45b873 BL |
1443 | u64 tx_bytes, rx_bytes, tx_packets, rx_packets; |
1444 | ||
1445 | tx_bytes = pr->tx_bytes; | |
1446 | tx_packets = pr->tx_packets; | |
1447 | rx_bytes = pr->rx_bytes; | |
1448 | rx_packets = pr->rx_packets; | |
7a291083 JBT |
1449 | |
1450 | memset(pr, 0, sizeof(struct ehea_port_res)); | |
1451 | ||
c8f19128 | 1452 | pr->tx_bytes = tx_bytes; |
ce45b873 BL |
1453 | pr->tx_packets = tx_packets; |
1454 | pr->rx_bytes = rx_bytes; | |
1455 | pr->rx_packets = rx_packets; | |
1456 | ||
7a291083 | 1457 | pr->port = port; |
7a291083 | 1458 | |
18604c54 JBT |
1459 | pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
1460 | if (!pr->eq) { | |
8c4877a4 | 1461 | pr_err("create_eq failed (eq)\n"); |
7a291083 JBT |
1462 | goto out_free; |
1463 | } | |
1464 | ||
1465 | pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, | |
18604c54 | 1466 | pr->eq->fw_handle, |
7a291083 JBT |
1467 | port->logical_port_id); |
1468 | if (!pr->recv_cq) { | |
8c4877a4 | 1469 | pr_err("create_cq failed (cq_recv)\n"); |
7a291083 JBT |
1470 | goto out_free; |
1471 | } | |
1472 | ||
1473 | pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, | |
18604c54 | 1474 | pr->eq->fw_handle, |
7a291083 JBT |
1475 | port->logical_port_id); |
1476 | if (!pr->send_cq) { | |
8c4877a4 | 1477 | pr_err("create_cq failed (cq_send)\n"); |
7a291083 JBT |
1478 | goto out_free; |
1479 | } | |
1480 | ||
1481 | if (netif_msg_ifup(port)) | |
8c4877a4 JP |
1482 | pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n", |
1483 | pr->send_cq->attr.act_nr_of_cqes, | |
1484 | pr->recv_cq->attr.act_nr_of_cqes); | |
7a291083 JBT |
1485 | |
1486 | init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); | |
1487 | if (!init_attr) { | |
1488 | ret = -ENOMEM; | |
8c4877a4 | 1489 | pr_err("no mem for ehea_qp_init_attr\n"); |
7a291083 JBT |
1490 | goto out_free; |
1491 | } | |
1492 | ||
1493 | init_attr->low_lat_rq1 = 1; | |
1494 | init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ | |
1495 | init_attr->rq_count = 3; | |
1496 | init_attr->qp_token = queue_token; | |
1497 | init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; | |
1498 | init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; | |
1499 | init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; | |
1500 | init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; | |
1501 | init_attr->wqe_size_enc_sq = EHEA_SG_SQ; | |
1502 | init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; | |
1503 | init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; | |
1504 | init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; | |
1505 | init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; | |
1506 | init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; | |
1507 | init_attr->port_nr = port->logical_port_id; | |
1508 | init_attr->send_cq_handle = pr->send_cq->fw_handle; | |
1509 | init_attr->recv_cq_handle = pr->recv_cq->fw_handle; | |
1510 | init_attr->aff_eq_handle = port->qp_eq->fw_handle; | |
1511 | ||
1512 | pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); | |
1513 | if (!pr->qp) { | |
8c4877a4 | 1514 | pr_err("create_qp failed\n"); |
7a291083 JBT |
1515 | ret = -EIO; |
1516 | goto out_free; | |
1517 | } | |
1518 | ||
1519 | if (netif_msg_ifup(port)) | |
8c4877a4 JP |
1520 | pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n", |
1521 | init_attr->qp_nr, | |
1522 | init_attr->act_nr_send_wqes, | |
1523 | init_attr->act_nr_rwqes_rq1, | |
1524 | init_attr->act_nr_rwqes_rq2, | |
1525 | init_attr->act_nr_rwqes_rq3); | |
7a291083 | 1526 | |
44fb3126 TK |
1527 | pr->sq_skba_size = init_attr->act_nr_send_wqes + 1; |
1528 | ||
1529 | ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size); | |
7a291083 JBT |
1530 | ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); |
1531 | ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); | |
1532 | ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); | |
1533 | if (ret) | |
1534 | goto out_free; | |
1535 | ||
1536 | pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; | |
1537 | if (ehea_gen_smrs(pr) != 0) { | |
1538 | ret = -EIO; | |
1539 | goto out_free; | |
1540 | } | |
18604c54 | 1541 | |
7a291083 JBT |
1542 | atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
1543 | ||
1544 | kfree(init_attr); | |
18604c54 | 1545 | |
bea3348e | 1546 | netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
18604c54 | 1547 | |
7a291083 JBT |
1548 | ret = 0; |
1549 | goto out; | |
1550 | ||
1551 | out_free: | |
1552 | kfree(init_attr); | |
1553 | vfree(pr->sq_skba.arr); | |
1554 | vfree(pr->rq1_skba.arr); | |
1555 | vfree(pr->rq2_skba.arr); | |
1556 | vfree(pr->rq3_skba.arr); | |
1557 | ehea_destroy_qp(pr->qp); | |
1558 | ehea_destroy_cq(pr->send_cq); | |
1559 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1560 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1561 | out: |
1562 | return ret; | |
1563 | } | |
1564 | ||
1565 | static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) | |
1566 | { | |
1567 | int ret, i; | |
1568 | ||
357eb46d HH |
1569 | if (pr->qp) |
1570 | netif_napi_del(&pr->napi); | |
1571 | ||
7a291083 JBT |
1572 | ret = ehea_destroy_qp(pr->qp); |
1573 | ||
1574 | if (!ret) { | |
1575 | ehea_destroy_cq(pr->send_cq); | |
1576 | ehea_destroy_cq(pr->recv_cq); | |
18604c54 | 1577 | ehea_destroy_eq(pr->eq); |
7a291083 JBT |
1578 | |
1579 | for (i = 0; i < pr->rq1_skba.len; i++) | |
1580 | if (pr->rq1_skba.arr[i]) | |
1581 | dev_kfree_skb(pr->rq1_skba.arr[i]); | |
1582 | ||
1583 | for (i = 0; i < pr->rq2_skba.len; i++) | |
1584 | if (pr->rq2_skba.arr[i]) | |
1585 | dev_kfree_skb(pr->rq2_skba.arr[i]); | |
1586 | ||
1587 | for (i = 0; i < pr->rq3_skba.len; i++) | |
1588 | if (pr->rq3_skba.arr[i]) | |
1589 | dev_kfree_skb(pr->rq3_skba.arr[i]); | |
1590 | ||
1591 | for (i = 0; i < pr->sq_skba.len; i++) | |
1592 | if (pr->sq_skba.arr[i]) | |
1593 | dev_kfree_skb(pr->sq_skba.arr[i]); | |
1594 | ||
1595 | vfree(pr->rq1_skba.arr); | |
1596 | vfree(pr->rq2_skba.arr); | |
1597 | vfree(pr->rq3_skba.arr); | |
1598 | vfree(pr->sq_skba.arr); | |
1599 | ret = ehea_rem_smrs(pr); | |
1600 | } | |
1601 | return ret; | |
1602 | } | |
1603 | ||
13946f5e AB |
1604 | static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe, |
1605 | u32 lkey) | |
7a291083 | 1606 | { |
e743d313 | 1607 | int skb_data_size = skb_headlen(skb); |
7a291083 JBT |
1608 | u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; |
1609 | struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; | |
13946f5e AB |
1610 | unsigned int immediate_len = SWQE2_MAX_IMM; |
1611 | ||
1612 | swqe->descriptors = 0; | |
7a291083 | 1613 | |
13946f5e AB |
1614 | if (skb_is_gso(skb)) { |
1615 | swqe->tx_control |= EHEA_SWQE_TSO; | |
1616 | swqe->mss = skb_shinfo(skb)->gso_size; | |
1617 | /* | |
1618 | * For TSO packets we only copy the headers into the | |
1619 | * immediate area. | |
1620 | */ | |
1621 | immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); | |
1622 | } | |
7a291083 | 1623 | |
13946f5e AB |
1624 | if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) { |
1625 | skb_copy_from_linear_data(skb, imm_data, immediate_len); | |
1626 | swqe->immediate_data_length = immediate_len; | |
7a291083 | 1627 | |
13946f5e | 1628 | if (skb_data_size > immediate_len) { |
7a291083 | 1629 | sg1entry->l_key = lkey; |
13946f5e | 1630 | sg1entry->len = skb_data_size - immediate_len; |
44a5b3d5 | 1631 | sg1entry->vaddr = |
13946f5e | 1632 | ehea_map_vaddr(skb->data + immediate_len); |
7a291083 JBT |
1633 | swqe->descriptors++; |
1634 | } | |
1635 | } else { | |
d626f62b | 1636 | skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
7a291083 JBT |
1637 | swqe->immediate_data_length = skb_data_size; |
1638 | } | |
1639 | } | |
1640 | ||
1641 | static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, | |
1642 | struct ehea_swqe *swqe, u32 lkey) | |
1643 | { | |
1644 | struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; | |
1645 | skb_frag_t *frag; | |
1646 | int nfrags, sg1entry_contains_frag_data, i; | |
7a291083 JBT |
1647 | |
1648 | nfrags = skb_shinfo(skb)->nr_frags; | |
1649 | sg1entry = &swqe->u.immdata_desc.sg_entry; | |
508d2b5d | 1650 | sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; |
7a291083 JBT |
1651 | sg1entry_contains_frag_data = 0; |
1652 | ||
13946f5e | 1653 | write_swqe2_immediate(skb, swqe, lkey); |
7a291083 JBT |
1654 | |
1655 | /* write descriptors */ | |
1656 | if (nfrags > 0) { | |
1657 | if (swqe->descriptors == 0) { | |
1658 | /* sg1entry not yet used */ | |
1659 | frag = &skb_shinfo(skb)->frags[0]; | |
1660 | ||
1661 | /* copy sg1entry data */ | |
1662 | sg1entry->l_key = lkey; | |
9e903e08 | 1663 | sg1entry->len = skb_frag_size(frag); |
44a5b3d5 | 1664 | sg1entry->vaddr = |
618c4a0a | 1665 | ehea_map_vaddr(skb_frag_address(frag)); |
7a291083 JBT |
1666 | swqe->descriptors++; |
1667 | sg1entry_contains_frag_data = 1; | |
1668 | } | |
1669 | ||
1670 | for (i = sg1entry_contains_frag_data; i < nfrags; i++) { | |
1671 | ||
1672 | frag = &skb_shinfo(skb)->frags[i]; | |
1673 | sgentry = &sg_list[i - sg1entry_contains_frag_data]; | |
1674 | ||
1675 | sgentry->l_key = lkey; | |
0110bba5 | 1676 | sgentry->len = skb_frag_size(frag); |
618c4a0a | 1677 | sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag)); |
7a291083 JBT |
1678 | swqe->descriptors++; |
1679 | } | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) | |
1684 | { | |
1685 | int ret = 0; | |
1686 | u64 hret; | |
1687 | u8 reg_type; | |
1688 | ||
1689 | /* De/Register untagged packets */ | |
1690 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; | |
1691 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1692 | port->logical_port_id, | |
1693 | reg_type, port->mac_addr, 0, hcallid); | |
1694 | if (hret != H_SUCCESS) { | |
8c4877a4 JP |
1695 | pr_err("%sregistering bc address failed (tagged)\n", |
1696 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1697 | ret = -EIO; |
1698 | goto out_herr; | |
1699 | } | |
1700 | ||
1701 | /* De/Register VLAN packets */ | |
1702 | reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; | |
1703 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1704 | port->logical_port_id, | |
1705 | reg_type, port->mac_addr, 0, hcallid); | |
1706 | if (hret != H_SUCCESS) { | |
8c4877a4 JP |
1707 | pr_err("%sregistering bc address failed (vlan)\n", |
1708 | hcallid == H_REG_BCMC ? "" : "de"); | |
7a291083 JBT |
1709 | ret = -EIO; |
1710 | } | |
1711 | out_herr: | |
1712 | return ret; | |
1713 | } | |
1714 | ||
1715 | static int ehea_set_mac_addr(struct net_device *dev, void *sa) | |
1716 | { | |
1717 | struct ehea_port *port = netdev_priv(dev); | |
1718 | struct sockaddr *mac_addr = sa; | |
1719 | struct hcp_ehea_port_cb0 *cb0; | |
1720 | int ret; | |
1721 | u64 hret; | |
1722 | ||
1723 | if (!is_valid_ether_addr(mac_addr->sa_data)) { | |
1724 | ret = -EADDRNOTAVAIL; | |
1725 | goto out; | |
1726 | } | |
1727 | ||
3faf2693 | 1728 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 1729 | if (!cb0) { |
8c4877a4 | 1730 | pr_err("no mem for cb0\n"); |
7a291083 JBT |
1731 | ret = -ENOMEM; |
1732 | goto out; | |
1733 | } | |
1734 | ||
1735 | memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); | |
1736 | ||
1737 | cb0->port_mac_addr = cb0->port_mac_addr >> 16; | |
1738 | ||
1739 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1740 | port->logical_port_id, H_PORT_CB0, | |
1741 | EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); | |
1742 | if (hret != H_SUCCESS) { | |
1743 | ret = -EIO; | |
1744 | goto out_free; | |
1745 | } | |
1746 | ||
1747 | memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); | |
1748 | ||
1749 | /* Deregister old MAC in pHYP */ | |
00aaea2f JBT |
1750 | if (port->state == EHEA_PORT_UP) { |
1751 | ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); | |
1752 | if (ret) | |
1753 | goto out_upregs; | |
1754 | } | |
7a291083 JBT |
1755 | |
1756 | port->mac_addr = cb0->port_mac_addr << 16; | |
1757 | ||
1758 | /* Register new MAC in pHYP */ | |
00aaea2f JBT |
1759 | if (port->state == EHEA_PORT_UP) { |
1760 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); | |
1761 | if (ret) | |
1762 | goto out_upregs; | |
1763 | } | |
7a291083 JBT |
1764 | |
1765 | ret = 0; | |
21eee2dd TK |
1766 | |
1767 | out_upregs: | |
1768 | ehea_update_bcmc_registrations(); | |
7a291083 | 1769 | out_free: |
3faf2693 | 1770 | free_page((unsigned long)cb0); |
7a291083 JBT |
1771 | out: |
1772 | return ret; | |
1773 | } | |
1774 | ||
1775 | static void ehea_promiscuous_error(u64 hret, int enable) | |
1776 | { | |
7674a588 | 1777 | if (hret == H_AUTHORITY) |
8c4877a4 JP |
1778 | pr_info("Hypervisor denied %sabling promiscuous mode\n", |
1779 | enable == 1 ? "en" : "dis"); | |
7674a588 | 1780 | else |
8c4877a4 JP |
1781 | pr_err("failed %sabling promiscuous mode\n", |
1782 | enable == 1 ? "en" : "dis"); | |
7a291083 JBT |
1783 | } |
1784 | ||
1785 | static void ehea_promiscuous(struct net_device *dev, int enable) | |
1786 | { | |
1787 | struct ehea_port *port = netdev_priv(dev); | |
1788 | struct hcp_ehea_port_cb7 *cb7; | |
1789 | u64 hret; | |
1790 | ||
aa3bc6c6 | 1791 | if (enable == port->promisc) |
7a291083 JBT |
1792 | return; |
1793 | ||
3faf2693 | 1794 | cb7 = (void *)get_zeroed_page(GFP_ATOMIC); |
7a291083 | 1795 | if (!cb7) { |
8c4877a4 | 1796 | pr_err("no mem for cb7\n"); |
7a291083 JBT |
1797 | goto out; |
1798 | } | |
1799 | ||
1800 | /* Modify Pxs_DUCQPN in CB7 */ | |
1801 | cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; | |
1802 | ||
1803 | hret = ehea_h_modify_ehea_port(port->adapter->handle, | |
1804 | port->logical_port_id, | |
1805 | H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); | |
1806 | if (hret) { | |
1807 | ehea_promiscuous_error(hret, enable); | |
1808 | goto out; | |
1809 | } | |
1810 | ||
1811 | port->promisc = enable; | |
1812 | out: | |
3faf2693 | 1813 | free_page((unsigned long)cb7); |
7a291083 JBT |
1814 | } |
1815 | ||
1816 | static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, | |
1817 | u32 hcallid) | |
1818 | { | |
1819 | u64 hret; | |
1820 | u8 reg_type; | |
1821 | ||
5d384574 TLSC |
1822 | reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED; |
1823 | if (mc_mac_addr == 0) | |
1824 | reg_type |= EHEA_BCMC_SCOPE_ALL; | |
7a291083 JBT |
1825 | |
1826 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1827 | port->logical_port_id, | |
1828 | reg_type, mc_mac_addr, 0, hcallid); | |
1829 | if (hret) | |
1830 | goto out; | |
1831 | ||
5d384574 TLSC |
1832 | reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL; |
1833 | if (mc_mac_addr == 0) | |
1834 | reg_type |= EHEA_BCMC_SCOPE_ALL; | |
7a291083 JBT |
1835 | |
1836 | hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, | |
1837 | port->logical_port_id, | |
1838 | reg_type, mc_mac_addr, 0, hcallid); | |
1839 | out: | |
1840 | return hret; | |
1841 | } | |
1842 | ||
1843 | static int ehea_drop_multicast_list(struct net_device *dev) | |
1844 | { | |
1845 | struct ehea_port *port = netdev_priv(dev); | |
1846 | struct ehea_mc_list *mc_entry = port->mc_list; | |
1847 | struct list_head *pos; | |
1848 | struct list_head *temp; | |
1849 | int ret = 0; | |
1850 | u64 hret; | |
1851 | ||
1852 | list_for_each_safe(pos, temp, &(port->mc_list->list)) { | |
1853 | mc_entry = list_entry(pos, struct ehea_mc_list, list); | |
1854 | ||
1855 | hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, | |
1856 | H_DEREG_BCMC); | |
1857 | if (hret) { | |
8c4877a4 | 1858 | pr_err("failed deregistering mcast MAC\n"); |
7a291083 JBT |
1859 | ret = -EIO; |
1860 | } | |
1861 | ||
1862 | list_del(pos); | |
1863 | kfree(mc_entry); | |
1864 | } | |
1865 | return ret; | |
1866 | } | |
1867 | ||
1868 | static void ehea_allmulti(struct net_device *dev, int enable) | |
1869 | { | |
1870 | struct ehea_port *port = netdev_priv(dev); | |
1871 | u64 hret; | |
1872 | ||
1873 | if (!port->allmulti) { | |
1874 | if (enable) { | |
1875 | /* Enable ALLMULTI */ | |
1876 | ehea_drop_multicast_list(dev); | |
1877 | hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); | |
1878 | if (!hret) | |
1879 | port->allmulti = 1; | |
1880 | else | |
8c4877a4 JP |
1881 | netdev_err(dev, |
1882 | "failed enabling IFF_ALLMULTI\n"); | |
7a291083 | 1883 | } |
5d384574 | 1884 | } else { |
7a291083 JBT |
1885 | if (!enable) { |
1886 | /* Disable ALLMULTI */ | |
1887 | hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); | |
1888 | if (!hret) | |
1889 | port->allmulti = 0; | |
1890 | else | |
8c4877a4 JP |
1891 | netdev_err(dev, |
1892 | "failed disabling IFF_ALLMULTI\n"); | |
7a291083 | 1893 | } |
5d384574 | 1894 | } |
7a291083 JBT |
1895 | } |
1896 | ||
508d2b5d | 1897 | static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) |
7a291083 JBT |
1898 | { |
1899 | struct ehea_mc_list *ehea_mcl_entry; | |
1900 | u64 hret; | |
1901 | ||
1e1675cc | 1902 | ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
b2adaca9 | 1903 | if (!ehea_mcl_entry) |
7a291083 | 1904 | return; |
7a291083 JBT |
1905 | |
1906 | INIT_LIST_HEAD(&ehea_mcl_entry->list); | |
1907 | ||
1908 | memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); | |
1909 | ||
1910 | hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, | |
1911 | H_REG_BCMC); | |
1912 | if (!hret) | |
1913 | list_add(&ehea_mcl_entry->list, &port->mc_list->list); | |
1914 | else { | |
8c4877a4 | 1915 | pr_err("failed registering mcast MAC\n"); |
7a291083 JBT |
1916 | kfree(ehea_mcl_entry); |
1917 | } | |
1918 | } | |
1919 | ||
1920 | static void ehea_set_multicast_list(struct net_device *dev) | |
1921 | { | |
1922 | struct ehea_port *port = netdev_priv(dev); | |
22bedad3 | 1923 | struct netdev_hw_addr *ha; |
48e2f183 | 1924 | int ret; |
7a291083 | 1925 | |
47d59d01 | 1926 | ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC)); |
7a291083 JBT |
1927 | |
1928 | if (dev->flags & IFF_ALLMULTI) { | |
1929 | ehea_allmulti(dev, 1); | |
21eee2dd | 1930 | goto out; |
7a291083 JBT |
1931 | } |
1932 | ehea_allmulti(dev, 0); | |
1933 | ||
4cd24eaf | 1934 | if (!netdev_mc_empty(dev)) { |
7a291083 JBT |
1935 | ret = ehea_drop_multicast_list(dev); |
1936 | if (ret) { | |
1937 | /* Dropping the current multicast list failed. | |
1938 | * Enabling ALL_MULTI is the best we can do. | |
1939 | */ | |
1940 | ehea_allmulti(dev, 1); | |
1941 | } | |
1942 | ||
4cd24eaf | 1943 | if (netdev_mc_count(dev) > port->adapter->max_mc_mac) { |
8c4877a4 JP |
1944 | pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n", |
1945 | port->adapter->max_mc_mac); | |
7a291083 JBT |
1946 | goto out; |
1947 | } | |
1948 | ||
22bedad3 JP |
1949 | netdev_for_each_mc_addr(ha, dev) |
1950 | ehea_add_multicast_entry(port, ha->addr); | |
508d2b5d | 1951 | |
7a291083 JBT |
1952 | } |
1953 | out: | |
21eee2dd | 1954 | ehea_update_bcmc_registrations(); |
7a291083 JBT |
1955 | } |
1956 | ||
d695c335 | 1957 | static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe) |
7a291083 | 1958 | { |
d695c335 | 1959 | swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC; |
d1d25aab | 1960 | |
be1d1486 | 1961 | if (vlan_get_protocol(skb) != htons(ETH_P_IP)) |
d695c335 | 1962 | return; |
7a291083 | 1963 | |
d695c335 AB |
1964 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
1965 | swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM; | |
7a291083 | 1966 | |
d695c335 AB |
1967 | swqe->ip_start = skb_network_offset(skb); |
1968 | swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1; | |
7a291083 | 1969 | |
d695c335 AB |
1970 | switch (ip_hdr(skb)->protocol) { |
1971 | case IPPROTO_UDP: | |
1972 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1973 | swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM; | |
7a291083 | 1974 | |
d695c335 AB |
1975 | swqe->tcp_offset = swqe->ip_end + 1 + |
1976 | offsetof(struct udphdr, check); | |
d695c335 AB |
1977 | break; |
1978 | ||
1979 | case IPPROTO_TCP: | |
1980 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1981 | swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM; | |
1982 | ||
1983 | swqe->tcp_offset = swqe->ip_end + 1 + | |
1984 | offsetof(struct tcphdr, check); | |
d695c335 | 1985 | break; |
7a291083 | 1986 | } |
d695c335 AB |
1987 | } |
1988 | ||
1989 | static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, | |
1990 | struct ehea_swqe *swqe, u32 lkey) | |
1991 | { | |
1992 | swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT; | |
1993 | ||
1994 | xmit_common(skb, swqe); | |
7a291083 JBT |
1995 | |
1996 | write_swqe2_data(skb, dev, swqe, lkey); | |
1997 | } | |
1998 | ||
1999 | static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, | |
2000 | struct ehea_swqe *swqe) | |
2001 | { | |
7a291083 | 2002 | u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; |
7a291083 | 2003 | |
d695c335 | 2004 | xmit_common(skb, swqe); |
d1d25aab | 2005 | |
30e2e90b | 2006 | if (!skb->data_len) |
d626f62b | 2007 | skb_copy_from_linear_data(skb, imm_data, skb->len); |
30e2e90b AB |
2008 | else |
2009 | skb_copy_bits(skb, 0, imm_data, skb->len); | |
d695c335 | 2010 | |
7a291083 | 2011 | swqe->immediate_data_length = skb->len; |
cfbe4063 | 2012 | dev_consume_skb_any(skb); |
7a291083 JBT |
2013 | } |
2014 | ||
94b2bb28 | 2015 | static netdev_tx_t ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
7a291083 JBT |
2016 | { |
2017 | struct ehea_port *port = netdev_priv(dev); | |
2018 | struct ehea_swqe *swqe; | |
7a291083 JBT |
2019 | u32 lkey; |
2020 | int swqe_index; | |
18604c54 | 2021 | struct ehea_port_res *pr; |
b9564468 | 2022 | struct netdev_queue *txq; |
18604c54 | 2023 | |
b9564468 AB |
2024 | pr = &port->port_res[skb_get_queue_mapping(skb)]; |
2025 | txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
18604c54 | 2026 | |
7a291083 JBT |
2027 | swqe = ehea_get_swqe(pr->qp, &swqe_index); |
2028 | memset(swqe, 0, SWQE_HEADER_SIZE); | |
2029 | atomic_dec(&pr->swqe_avail); | |
2030 | ||
df8a39de | 2031 | if (skb_vlan_tag_present(skb)) { |
e5ccd961 | 2032 | swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; |
df8a39de | 2033 | swqe->vlan_tag = skb_vlan_tag_get(skb); |
e5ccd961 ED |
2034 | } |
2035 | ||
ce45b873 BL |
2036 | pr->tx_packets++; |
2037 | pr->tx_bytes += skb->len; | |
2038 | ||
7a291083 JBT |
2039 | if (skb->len <= SWQE3_MAX_IMM) { |
2040 | u32 sig_iv = port->sig_comp_iv; | |
2041 | u32 swqe_num = pr->swqe_id_counter; | |
2042 | ehea_xmit3(skb, dev, swqe); | |
2043 | swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) | |
2044 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); | |
2045 | if (pr->swqe_ll_count >= (sig_iv - 1)) { | |
2046 | swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, | |
2047 | sig_iv); | |
2048 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; | |
2049 | pr->swqe_ll_count = 0; | |
2050 | } else | |
2051 | pr->swqe_ll_count += 1; | |
2052 | } else { | |
2053 | swqe->wr_id = | |
2054 | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) | |
2055 | | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) | |
acbddb59 | 2056 | | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
7a291083 JBT |
2057 | | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
2058 | pr->sq_skba.arr[pr->sq_skba.index] = skb; | |
2059 | ||
2060 | pr->sq_skba.index++; | |
2061 | pr->sq_skba.index &= (pr->sq_skba.len - 1); | |
2062 | ||
2063 | lkey = pr->send_mr.lkey; | |
2064 | ehea_xmit2(skb, dev, swqe, lkey); | |
acbddb59 | 2065 | swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
7a291083 JBT |
2066 | } |
2067 | pr->swqe_id_counter += 1; | |
2068 | ||
8c4877a4 JP |
2069 | netif_info(port, tx_queued, dev, |
2070 | "post swqe on QP %d\n", pr->qp->init_attr.qp_nr); | |
2071 | if (netif_msg_tx_queued(port)) | |
bff0a55f | 2072 | ehea_dump(swqe, 512, "swqe"); |
7a291083 | 2073 | |
2c69448b | 2074 | if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
b9564468 | 2075 | netif_tx_stop_queue(txq); |
2c69448b JBT |
2076 | swqe->tx_control |= EHEA_SWQE_PURGE; |
2077 | } | |
44c82152 | 2078 | |
7a291083 | 2079 | ehea_post_swqe(pr->qp, swqe); |
7a291083 JBT |
2080 | |
2081 | if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { | |
b9564468 AB |
2082 | pr->p_stats.queue_stopped++; |
2083 | netif_tx_stop_queue(txq); | |
7a291083 | 2084 | } |
2c69448b | 2085 | |
7a291083 JBT |
2086 | return NETDEV_TX_OK; |
2087 | } | |
2088 | ||
80d5c368 | 2089 | static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) |
7a291083 JBT |
2090 | { |
2091 | struct ehea_port *port = netdev_priv(dev); | |
2092 | struct ehea_adapter *adapter = port->adapter; | |
2093 | struct hcp_ehea_port_cb1 *cb1; | |
2094 | int index; | |
2095 | u64 hret; | |
8e586137 | 2096 | int err = 0; |
7a291083 | 2097 | |
3faf2693 | 2098 | cb1 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2099 | if (!cb1) { |
8c4877a4 | 2100 | pr_err("no mem for cb1\n"); |
8e586137 | 2101 | err = -ENOMEM; |
7a291083 JBT |
2102 | goto out; |
2103 | } | |
2104 | ||
2105 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2106 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2107 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2108 | pr_err("query_ehea_port failed\n"); |
8e586137 | 2109 | err = -EINVAL; |
7a291083 JBT |
2110 | goto out; |
2111 | } | |
2112 | ||
2113 | index = (vid / 64); | |
dec590c1 | 2114 | cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2115 | |
2116 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2117 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
8e586137 | 2118 | if (hret != H_SUCCESS) { |
8c4877a4 | 2119 | pr_err("modify_ehea_port failed\n"); |
8e586137 JP |
2120 | err = -EINVAL; |
2121 | } | |
7a291083 | 2122 | out: |
3faf2693 | 2123 | free_page((unsigned long)cb1); |
8e586137 | 2124 | return err; |
7a291083 JBT |
2125 | } |
2126 | ||
80d5c368 | 2127 | static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) |
7a291083 JBT |
2128 | { |
2129 | struct ehea_port *port = netdev_priv(dev); | |
2130 | struct ehea_adapter *adapter = port->adapter; | |
2131 | struct hcp_ehea_port_cb1 *cb1; | |
2132 | int index; | |
2133 | u64 hret; | |
8e586137 | 2134 | int err = 0; |
7a291083 | 2135 | |
3faf2693 | 2136 | cb1 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2137 | if (!cb1) { |
8c4877a4 | 2138 | pr_err("no mem for cb1\n"); |
8e586137 | 2139 | err = -ENOMEM; |
7a291083 JBT |
2140 | goto out; |
2141 | } | |
2142 | ||
2143 | hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, | |
2144 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
2145 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2146 | pr_err("query_ehea_port failed\n"); |
8e586137 | 2147 | err = -EINVAL; |
7a291083 JBT |
2148 | goto out; |
2149 | } | |
2150 | ||
2151 | index = (vid / 64); | |
dec590c1 | 2152 | cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
7a291083 JBT |
2153 | |
2154 | hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, | |
2155 | H_PORT_CB1, H_PORT_CB1_ALL, cb1); | |
8e586137 | 2156 | if (hret != H_SUCCESS) { |
8c4877a4 | 2157 | pr_err("modify_ehea_port failed\n"); |
8e586137 JP |
2158 | err = -EINVAL; |
2159 | } | |
7a291083 | 2160 | out: |
3faf2693 | 2161 | free_page((unsigned long)cb1); |
8e586137 | 2162 | return err; |
7a291083 JBT |
2163 | } |
2164 | ||
1886e5d2 | 2165 | static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) |
7a291083 JBT |
2166 | { |
2167 | int ret = -EIO; | |
2168 | u64 hret; | |
2169 | u16 dummy16 = 0; | |
2170 | u64 dummy64 = 0; | |
508d2b5d | 2171 | struct hcp_modify_qp_cb0 *cb0; |
7a291083 | 2172 | |
3faf2693 | 2173 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
2174 | if (!cb0) { |
2175 | ret = -ENOMEM; | |
2176 | goto out; | |
2177 | } | |
2178 | ||
2179 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2180 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2181 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2182 | pr_err("query_ehea_qp failed (1)\n"); |
7a291083 JBT |
2183 | goto out; |
2184 | } | |
2185 | ||
2186 | cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; | |
2187 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2188 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2189 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2190 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2191 | pr_err("modify_ehea_qp failed (1)\n"); |
7a291083 JBT |
2192 | goto out; |
2193 | } | |
2194 | ||
2195 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2196 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2197 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2198 | pr_err("query_ehea_qp failed (2)\n"); |
7a291083 JBT |
2199 | goto out; |
2200 | } | |
2201 | ||
2202 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; | |
2203 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2204 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2205 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2206 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2207 | pr_err("modify_ehea_qp failed (2)\n"); |
7a291083 JBT |
2208 | goto out; |
2209 | } | |
2210 | ||
2211 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2212 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2213 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2214 | pr_err("query_ehea_qp failed (3)\n"); |
7a291083 JBT |
2215 | goto out; |
2216 | } | |
2217 | ||
2218 | cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; | |
2219 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2220 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, | |
2221 | &dummy64, &dummy64, &dummy16, &dummy16); | |
2222 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2223 | pr_err("modify_ehea_qp failed (3)\n"); |
7a291083 JBT |
2224 | goto out; |
2225 | } | |
2226 | ||
2227 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2228 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); | |
2229 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2230 | pr_err("query_ehea_qp failed (4)\n"); |
7a291083 JBT |
2231 | goto out; |
2232 | } | |
2233 | ||
2234 | ret = 0; | |
2235 | out: | |
3faf2693 | 2236 | free_page((unsigned long)cb0); |
7a291083 JBT |
2237 | return ret; |
2238 | } | |
2239 | ||
723f28e4 | 2240 | static int ehea_port_res_setup(struct ehea_port *port, int def_qps) |
7a291083 JBT |
2241 | { |
2242 | int ret, i; | |
2243 | struct port_res_cfg pr_cfg, pr_cfg_small_rx; | |
2244 | enum ehea_eq_type eq_type = EHEA_EQ; | |
2245 | ||
2246 | port->qp_eq = ehea_create_eq(port->adapter, eq_type, | |
2247 | EHEA_MAX_ENTRIES_EQ, 1); | |
2248 | if (!port->qp_eq) { | |
2249 | ret = -EINVAL; | |
8c4877a4 | 2250 | pr_err("ehea_create_eq failed (qp_eq)\n"); |
7a291083 JBT |
2251 | goto out_kill_eq; |
2252 | } | |
2253 | ||
2254 | pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; | |
18604c54 | 2255 | pr_cfg.max_entries_scq = sq_entries * 2; |
7a291083 JBT |
2256 | pr_cfg.max_entries_sq = sq_entries; |
2257 | pr_cfg.max_entries_rq1 = rq1_entries; | |
2258 | pr_cfg.max_entries_rq2 = rq2_entries; | |
2259 | pr_cfg.max_entries_rq3 = rq3_entries; | |
2260 | ||
2261 | pr_cfg_small_rx.max_entries_rcq = 1; | |
2262 | pr_cfg_small_rx.max_entries_scq = sq_entries; | |
2263 | pr_cfg_small_rx.max_entries_sq = sq_entries; | |
2264 | pr_cfg_small_rx.max_entries_rq1 = 1; | |
2265 | pr_cfg_small_rx.max_entries_rq2 = 1; | |
2266 | pr_cfg_small_rx.max_entries_rq3 = 1; | |
2267 | ||
2268 | for (i = 0; i < def_qps; i++) { | |
2269 | ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); | |
2270 | if (ret) | |
2271 | goto out_clean_pr; | |
2272 | } | |
723f28e4 | 2273 | for (i = def_qps; i < def_qps; i++) { |
7a291083 JBT |
2274 | ret = ehea_init_port_res(port, &port->port_res[i], |
2275 | &pr_cfg_small_rx, i); | |
2276 | if (ret) | |
2277 | goto out_clean_pr; | |
2278 | } | |
2279 | ||
2280 | return 0; | |
2281 | ||
2282 | out_clean_pr: | |
2283 | while (--i >= 0) | |
2284 | ehea_clean_portres(port, &port->port_res[i]); | |
2285 | ||
2286 | out_kill_eq: | |
2287 | ehea_destroy_eq(port->qp_eq); | |
2288 | return ret; | |
2289 | } | |
2290 | ||
2291 | static int ehea_clean_all_portres(struct ehea_port *port) | |
2292 | { | |
2293 | int ret = 0; | |
2294 | int i; | |
2295 | ||
723f28e4 | 2296 | for (i = 0; i < port->num_def_qps; i++) |
7a291083 JBT |
2297 | ret |= ehea_clean_portres(port, &port->port_res[i]); |
2298 | ||
2299 | ret |= ehea_destroy_eq(port->qp_eq); | |
2300 | ||
2301 | return ret; | |
2302 | } | |
2303 | ||
35cf2e2e | 2304 | static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2305 | { |
35cf2e2e TK |
2306 | if (adapter->active_ports) |
2307 | return; | |
1211bb6d TK |
2308 | |
2309 | ehea_rem_mr(&adapter->mr); | |
2310 | } | |
2311 | ||
35cf2e2e | 2312 | static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
1211bb6d | 2313 | { |
35cf2e2e TK |
2314 | if (adapter->active_ports) |
2315 | return 0; | |
1211bb6d TK |
2316 | |
2317 | return ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2318 | } | |
2319 | ||
7a291083 JBT |
2320 | static int ehea_up(struct net_device *dev) |
2321 | { | |
2322 | int ret, i; | |
2323 | struct ehea_port *port = netdev_priv(dev); | |
7a291083 JBT |
2324 | |
2325 | if (port->state == EHEA_PORT_UP) | |
2326 | return 0; | |
2327 | ||
723f28e4 | 2328 | ret = ehea_port_res_setup(port, port->num_def_qps); |
7a291083 | 2329 | if (ret) { |
8c4877a4 | 2330 | netdev_err(dev, "port_res_failed\n"); |
7a291083 JBT |
2331 | goto out; |
2332 | } | |
2333 | ||
2334 | /* Set default QP for this port */ | |
2335 | ret = ehea_configure_port(port); | |
2336 | if (ret) { | |
8c4877a4 | 2337 | netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret); |
7a291083 JBT |
2338 | goto out_clean_pr; |
2339 | } | |
2340 | ||
7a291083 JBT |
2341 | ret = ehea_reg_interrupts(dev); |
2342 | if (ret) { | |
8c4877a4 | 2343 | netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret); |
f9e29228 | 2344 | goto out_clean_pr; |
7a291083 JBT |
2345 | } |
2346 | ||
723f28e4 | 2347 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 JBT |
2348 | ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); |
2349 | if (ret) { | |
8c4877a4 | 2350 | netdev_err(dev, "activate_qp failed\n"); |
7a291083 JBT |
2351 | goto out_free_irqs; |
2352 | } | |
2353 | } | |
2354 | ||
508d2b5d | 2355 | for (i = 0; i < port->num_def_qps; i++) { |
7a291083 JBT |
2356 | ret = ehea_fill_port_res(&port->port_res[i]); |
2357 | if (ret) { | |
8c4877a4 | 2358 | netdev_err(dev, "out_free_irqs\n"); |
7a291083 JBT |
2359 | goto out_free_irqs; |
2360 | } | |
2361 | } | |
2362 | ||
21eee2dd TK |
2363 | ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
2364 | if (ret) { | |
2365 | ret = -EIO; | |
2366 | goto out_free_irqs; | |
2367 | } | |
2368 | ||
7a291083 | 2369 | port->state = EHEA_PORT_UP; |
21eee2dd TK |
2370 | |
2371 | ret = 0; | |
7a291083 JBT |
2372 | goto out; |
2373 | ||
2374 | out_free_irqs: | |
2375 | ehea_free_interrupts(dev); | |
2376 | ||
7a291083 JBT |
2377 | out_clean_pr: |
2378 | ehea_clean_all_portres(port); | |
2379 | out: | |
44c82152 | 2380 | if (ret) |
8c4877a4 | 2381 | netdev_info(dev, "Failed starting. ret=%i\n", ret); |
44c82152 | 2382 | |
21eee2dd | 2383 | ehea_update_bcmc_registrations(); |
21eee2dd | 2384 | ehea_update_firmware_handles(); |
21eee2dd | 2385 | |
7a291083 JBT |
2386 | return ret; |
2387 | } | |
2388 | ||
bea3348e SH |
2389 | static void port_napi_disable(struct ehea_port *port) |
2390 | { | |
2391 | int i; | |
2392 | ||
723f28e4 | 2393 | for (i = 0; i < port->num_def_qps; i++) |
bea3348e SH |
2394 | napi_disable(&port->port_res[i].napi); |
2395 | } | |
2396 | ||
2397 | static void port_napi_enable(struct ehea_port *port) | |
2398 | { | |
2399 | int i; | |
2400 | ||
723f28e4 | 2401 | for (i = 0; i < port->num_def_qps; i++) |
bea3348e SH |
2402 | napi_enable(&port->port_res[i].napi); |
2403 | } | |
2404 | ||
7a291083 JBT |
2405 | static int ehea_open(struct net_device *dev) |
2406 | { | |
2407 | int ret; | |
2408 | struct ehea_port *port = netdev_priv(dev); | |
2409 | ||
a5af6ad3 | 2410 | mutex_lock(&port->port_lock); |
7a291083 | 2411 | |
8c4877a4 | 2412 | netif_info(port, ifup, dev, "enabling port\n"); |
7a291083 | 2413 | |
29ab5a3b GP |
2414 | netif_carrier_off(dev); |
2415 | ||
7a291083 | 2416 | ret = ehea_up(dev); |
bea3348e SH |
2417 | if (!ret) { |
2418 | port_napi_enable(port); | |
b9564468 | 2419 | netif_tx_start_all_queues(dev); |
bea3348e | 2420 | } |
7a291083 | 2421 | |
a5af6ad3 | 2422 | mutex_unlock(&port->port_lock); |
67c170a2 AB |
2423 | schedule_delayed_work(&port->stats_work, |
2424 | round_jiffies_relative(msecs_to_jiffies(1000))); | |
7a291083 JBT |
2425 | |
2426 | return ret; | |
2427 | } | |
2428 | ||
2429 | static int ehea_down(struct net_device *dev) | |
2430 | { | |
bea3348e | 2431 | int ret; |
7a291083 JBT |
2432 | struct ehea_port *port = netdev_priv(dev); |
2433 | ||
2434 | if (port->state == EHEA_PORT_DOWN) | |
2435 | return 0; | |
2436 | ||
2437 | ehea_drop_multicast_list(dev); | |
5d384574 | 2438 | ehea_allmulti(dev, 0); |
21eee2dd TK |
2439 | ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
2440 | ||
7a291083 JBT |
2441 | ehea_free_interrupts(dev); |
2442 | ||
7a291083 | 2443 | port->state = EHEA_PORT_DOWN; |
44c82152 | 2444 | |
21eee2dd | 2445 | ehea_update_bcmc_registrations(); |
21eee2dd | 2446 | |
44c82152 TK |
2447 | ret = ehea_clean_all_portres(port); |
2448 | if (ret) | |
8c4877a4 | 2449 | netdev_info(dev, "Failed freeing resources. ret=%i\n", ret); |
44c82152 | 2450 | |
21eee2dd | 2451 | ehea_update_firmware_handles(); |
21eee2dd | 2452 | |
7a291083 JBT |
2453 | return ret; |
2454 | } | |
2455 | ||
2456 | static int ehea_stop(struct net_device *dev) | |
2457 | { | |
2458 | int ret; | |
2459 | struct ehea_port *port = netdev_priv(dev); | |
2460 | ||
8c4877a4 | 2461 | netif_info(port, ifdown, dev, "disabling port\n"); |
7a291083 | 2462 | |
2f69ae01 | 2463 | set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
4bb073c0 | 2464 | cancel_work_sync(&port->reset_task); |
2aefcad8 | 2465 | cancel_delayed_work_sync(&port->stats_work); |
a5af6ad3 | 2466 | mutex_lock(&port->port_lock); |
b9564468 | 2467 | netif_tx_stop_all_queues(dev); |
0173b793 | 2468 | port_napi_disable(port); |
7a291083 | 2469 | ret = ehea_down(dev); |
a5af6ad3 | 2470 | mutex_unlock(&port->port_lock); |
2f69ae01 | 2471 | clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags); |
7a291083 JBT |
2472 | return ret; |
2473 | } | |
2474 | ||
22559c5d | 2475 | static void ehea_purge_sq(struct ehea_qp *orig_qp) |
2c69448b JBT |
2476 | { |
2477 | struct ehea_qp qp = *orig_qp; | |
2478 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2479 | struct ehea_swqe *swqe; | |
2480 | int wqe_index; | |
2481 | int i; | |
2482 | ||
2483 | for (i = 0; i < init_attr->act_nr_send_wqes; i++) { | |
2484 | swqe = ehea_get_swqe(&qp, &wqe_index); | |
2485 | swqe->tx_control |= EHEA_SWQE_PURGE; | |
2486 | } | |
2487 | } | |
2488 | ||
22559c5d | 2489 | static void ehea_flush_sq(struct ehea_port *port) |
44fb3126 TK |
2490 | { |
2491 | int i; | |
2492 | ||
723f28e4 | 2493 | for (i = 0; i < port->num_def_qps; i++) { |
44fb3126 TK |
2494 | struct ehea_port_res *pr = &port->port_res[i]; |
2495 | int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count; | |
5b27d427 BL |
2496 | int ret; |
2497 | ||
2498 | ret = wait_event_timeout(port->swqe_avail_wq, | |
2499 | atomic_read(&pr->swqe_avail) >= swqe_max, | |
2500 | msecs_to_jiffies(100)); | |
2501 | ||
2502 | if (!ret) { | |
8c4877a4 | 2503 | pr_err("WARNING: sq not flushed completely\n"); |
5b27d427 | 2504 | break; |
44fb3126 TK |
2505 | } |
2506 | } | |
2507 | } | |
2508 | ||
1886e5d2 | 2509 | static int ehea_stop_qps(struct net_device *dev) |
2c69448b JBT |
2510 | { |
2511 | struct ehea_port *port = netdev_priv(dev); | |
2512 | struct ehea_adapter *adapter = port->adapter; | |
508d2b5d | 2513 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2514 | int ret = -EIO; |
2515 | int dret; | |
2516 | int i; | |
2517 | u64 hret; | |
2518 | u64 dummy64 = 0; | |
2519 | u16 dummy16 = 0; | |
2520 | ||
3faf2693 | 2521 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2522 | if (!cb0) { |
2523 | ret = -ENOMEM; | |
2524 | goto out; | |
2525 | } | |
2526 | ||
723f28e4 | 2527 | for (i = 0; i < (port->num_def_qps); i++) { |
2c69448b JBT |
2528 | struct ehea_port_res *pr = &port->port_res[i]; |
2529 | struct ehea_qp *qp = pr->qp; | |
2530 | ||
2531 | /* Purge send queue */ | |
2532 | ehea_purge_sq(qp); | |
2533 | ||
2534 | /* Disable queue pair */ | |
2535 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2536 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2537 | cb0); | |
2538 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2539 | pr_err("query_ehea_qp failed (1)\n"); |
2c69448b JBT |
2540 | goto out; |
2541 | } | |
2542 | ||
2543 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2544 | cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; | |
2545 | ||
2546 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2547 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2548 | 1), cb0, &dummy64, | |
2549 | &dummy64, &dummy16, &dummy16); | |
2550 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2551 | pr_err("modify_ehea_qp failed (1)\n"); |
2c69448b JBT |
2552 | goto out; |
2553 | } | |
2554 | ||
2555 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2556 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2557 | cb0); | |
2558 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2559 | pr_err("query_ehea_qp failed (2)\n"); |
2c69448b JBT |
2560 | goto out; |
2561 | } | |
2562 | ||
2563 | /* deregister shared memory regions */ | |
2564 | dret = ehea_rem_smrs(pr); | |
2565 | if (dret) { | |
8c4877a4 | 2566 | pr_err("unreg shared memory region failed\n"); |
2c69448b JBT |
2567 | goto out; |
2568 | } | |
2569 | } | |
2570 | ||
2571 | ret = 0; | |
2572 | out: | |
3faf2693 | 2573 | free_page((unsigned long)cb0); |
2c69448b JBT |
2574 | |
2575 | return ret; | |
2576 | } | |
2577 | ||
1886e5d2 | 2578 | static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr) |
2c69448b JBT |
2579 | { |
2580 | struct ehea_qp qp = *orig_qp; | |
2581 | struct ehea_qp_init_attr *init_attr = &qp.init_attr; | |
2582 | struct ehea_rwqe *rwqe; | |
2583 | struct sk_buff **skba_rq2 = pr->rq2_skba.arr; | |
2584 | struct sk_buff **skba_rq3 = pr->rq3_skba.arr; | |
2585 | struct sk_buff *skb; | |
2586 | u32 lkey = pr->recv_mr.lkey; | |
2587 | ||
2588 | ||
2589 | int i; | |
2590 | int index; | |
2591 | ||
2592 | for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { | |
2593 | rwqe = ehea_get_next_rwqe(&qp, 2); | |
2594 | rwqe->sg_list[0].l_key = lkey; | |
2595 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2596 | skb = skba_rq2[index]; | |
2597 | if (skb) | |
2598 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2599 | } | |
2600 | ||
2601 | for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { | |
2602 | rwqe = ehea_get_next_rwqe(&qp, 3); | |
2603 | rwqe->sg_list[0].l_key = lkey; | |
2604 | index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); | |
2605 | skb = skba_rq3[index]; | |
2606 | if (skb) | |
2607 | rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); | |
2608 | } | |
2609 | } | |
2610 | ||
1886e5d2 | 2611 | static int ehea_restart_qps(struct net_device *dev) |
2c69448b JBT |
2612 | { |
2613 | struct ehea_port *port = netdev_priv(dev); | |
2614 | struct ehea_adapter *adapter = port->adapter; | |
2615 | int ret = 0; | |
2616 | int i; | |
2617 | ||
508d2b5d | 2618 | struct hcp_modify_qp_cb0 *cb0; |
2c69448b JBT |
2619 | u64 hret; |
2620 | u64 dummy64 = 0; | |
2621 | u16 dummy16 = 0; | |
2622 | ||
3faf2693 | 2623 | cb0 = (void *)get_zeroed_page(GFP_KERNEL); |
2c69448b JBT |
2624 | if (!cb0) { |
2625 | ret = -ENOMEM; | |
2626 | goto out; | |
2627 | } | |
2628 | ||
723f28e4 | 2629 | for (i = 0; i < (port->num_def_qps); i++) { |
2c69448b JBT |
2630 | struct ehea_port_res *pr = &port->port_res[i]; |
2631 | struct ehea_qp *qp = pr->qp; | |
2632 | ||
2633 | ret = ehea_gen_smrs(pr); | |
2634 | if (ret) { | |
8c4877a4 | 2635 | netdev_err(dev, "creation of shared memory regions failed\n"); |
2c69448b JBT |
2636 | goto out; |
2637 | } | |
2638 | ||
2639 | ehea_update_rqs(qp, pr); | |
2640 | ||
2641 | /* Enable queue pair */ | |
2642 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2643 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2644 | cb0); | |
2645 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2646 | netdev_err(dev, "query_ehea_qp failed (1)\n"); |
2c69448b JBT |
2647 | goto out; |
2648 | } | |
2649 | ||
2650 | cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; | |
2651 | cb0->qp_ctl_reg |= H_QP_CR_ENABLED; | |
2652 | ||
2653 | hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2654 | EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, | |
2655 | 1), cb0, &dummy64, | |
2656 | &dummy64, &dummy16, &dummy16); | |
2657 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2658 | netdev_err(dev, "modify_ehea_qp failed (1)\n"); |
2c69448b JBT |
2659 | goto out; |
2660 | } | |
2661 | ||
2662 | hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, | |
2663 | EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), | |
2664 | cb0); | |
2665 | if (hret != H_SUCCESS) { | |
8c4877a4 | 2666 | netdev_err(dev, "query_ehea_qp failed (2)\n"); |
2c69448b JBT |
2667 | goto out; |
2668 | } | |
2669 | ||
2670 | /* refill entire queue */ | |
2671 | ehea_refill_rq1(pr, pr->rq1_skba.index, 0); | |
2672 | ehea_refill_rq2(pr, 0); | |
2673 | ehea_refill_rq3(pr, 0); | |
2674 | } | |
2675 | out: | |
3faf2693 | 2676 | free_page((unsigned long)cb0); |
2c69448b JBT |
2677 | |
2678 | return ret; | |
2679 | } | |
2680 | ||
c4028958 | 2681 | static void ehea_reset_port(struct work_struct *work) |
7a291083 JBT |
2682 | { |
2683 | int ret; | |
c4028958 DH |
2684 | struct ehea_port *port = |
2685 | container_of(work, struct ehea_port, reset_task); | |
2686 | struct net_device *dev = port->netdev; | |
7a291083 | 2687 | |
099473c1 | 2688 | mutex_lock(&dlpar_mem_lock); |
7a291083 | 2689 | port->resets++; |
a5af6ad3 | 2690 | mutex_lock(&port->port_lock); |
b9564468 | 2691 | netif_tx_disable(dev); |
bea3348e SH |
2692 | |
2693 | port_napi_disable(port); | |
7a291083 | 2694 | |
44c82152 | 2695 | ehea_down(dev); |
7a291083 JBT |
2696 | |
2697 | ret = ehea_up(dev); | |
44c82152 | 2698 | if (ret) |
7a291083 | 2699 | goto out; |
7a291083 | 2700 | |
2c69448b JBT |
2701 | ehea_set_multicast_list(dev); |
2702 | ||
8c4877a4 | 2703 | netif_info(port, timer, dev, "reset successful\n"); |
7a291083 | 2704 | |
bea3348e SH |
2705 | port_napi_enable(port); |
2706 | ||
b9564468 | 2707 | netif_tx_wake_all_queues(dev); |
7a291083 | 2708 | out: |
a5af6ad3 | 2709 | mutex_unlock(&port->port_lock); |
099473c1 | 2710 | mutex_unlock(&dlpar_mem_lock); |
7a291083 JBT |
2711 | } |
2712 | ||
3d6b892b | 2713 | static void ehea_rereg_mrs(void) |
44c82152 TK |
2714 | { |
2715 | int ret, i; | |
2716 | struct ehea_adapter *adapter; | |
2717 | ||
8c4877a4 | 2718 | pr_info("LPAR memory changed - re-initializing driver\n"); |
44c82152 TK |
2719 | |
2720 | list_for_each_entry(adapter, &adapter_list, list) | |
2721 | if (adapter->active_ports) { | |
2722 | /* Shutdown all ports */ | |
2723 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2724 | struct ehea_port *port = adapter->port[i]; | |
a5af6ad3 | 2725 | struct net_device *dev; |
44c82152 | 2726 | |
a5af6ad3 DW |
2727 | if (!port) |
2728 | continue; | |
44c82152 | 2729 | |
a5af6ad3 DW |
2730 | dev = port->netdev; |
2731 | ||
2732 | if (dev->flags & IFF_UP) { | |
2733 | mutex_lock(&port->port_lock); | |
b9564468 | 2734 | netif_tx_disable(dev); |
df39e8ba | 2735 | ehea_flush_sq(port); |
a5af6ad3 DW |
2736 | ret = ehea_stop_qps(dev); |
2737 | if (ret) { | |
2738 | mutex_unlock(&port->port_lock); | |
2739 | goto out; | |
44c82152 | 2740 | } |
a5af6ad3 DW |
2741 | port_napi_disable(port); |
2742 | mutex_unlock(&port->port_lock); | |
44c82152 | 2743 | } |
2928db4c | 2744 | reset_sq_restart_flag(port); |
44c82152 TK |
2745 | } |
2746 | ||
2747 | /* Unregister old memory region */ | |
2748 | ret = ehea_rem_mr(&adapter->mr); | |
2749 | if (ret) { | |
8c4877a4 | 2750 | pr_err("unregister MR failed - driver inoperable!\n"); |
44c82152 TK |
2751 | goto out; |
2752 | } | |
2753 | } | |
2754 | ||
44c82152 TK |
2755 | clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
2756 | ||
2757 | list_for_each_entry(adapter, &adapter_list, list) | |
2758 | if (adapter->active_ports) { | |
2759 | /* Register new memory region */ | |
2760 | ret = ehea_reg_kernel_mr(adapter, &adapter->mr); | |
2761 | if (ret) { | |
8c4877a4 | 2762 | pr_err("register MR failed - driver inoperable!\n"); |
44c82152 TK |
2763 | goto out; |
2764 | } | |
2765 | ||
2766 | /* Restart all ports */ | |
2767 | for (i = 0; i < EHEA_MAX_PORTS; i++) { | |
2768 | struct ehea_port *port = adapter->port[i]; | |
2769 | ||
2770 | if (port) { | |
2771 | struct net_device *dev = port->netdev; | |
2772 | ||
2773 | if (dev->flags & IFF_UP) { | |
a5af6ad3 | 2774 | mutex_lock(&port->port_lock); |
2c69448b | 2775 | ret = ehea_restart_qps(dev); |
6f4d6dc1 BL |
2776 | if (!ret) { |
2777 | check_sqs(port); | |
2778 | port_napi_enable(port); | |
b9564468 | 2779 | netif_tx_wake_all_queues(dev); |
6f4d6dc1 BL |
2780 | } else { |
2781 | netdev_err(dev, "Unable to restart QPS\n"); | |
2782 | } | |
a5af6ad3 | 2783 | mutex_unlock(&port->port_lock); |
44c82152 TK |
2784 | } |
2785 | } | |
2786 | } | |
2787 | } | |
8c4877a4 | 2788 | pr_info("re-initializing driver complete\n"); |
44c82152 TK |
2789 | out: |
2790 | return; | |
2791 | } | |
2792 | ||
7a291083 JBT |
2793 | static void ehea_tx_watchdog(struct net_device *dev) |
2794 | { | |
2795 | struct ehea_port *port = netdev_priv(dev); | |
2796 | ||
2c69448b JBT |
2797 | if (netif_carrier_ok(dev) && |
2798 | !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) | |
2f69ae01 | 2799 | ehea_schedule_port_reset(port); |
7a291083 JBT |
2800 | } |
2801 | ||
1886e5d2 | 2802 | static int ehea_sense_adapter_attr(struct ehea_adapter *adapter) |
7a291083 JBT |
2803 | { |
2804 | struct hcp_query_ehea *cb; | |
2805 | u64 hret; | |
2806 | int ret; | |
2807 | ||
3faf2693 | 2808 | cb = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 JBT |
2809 | if (!cb) { |
2810 | ret = -ENOMEM; | |
2811 | goto out; | |
2812 | } | |
2813 | ||
2814 | hret = ehea_h_query_ehea(adapter->handle, cb); | |
2815 | ||
2816 | if (hret != H_SUCCESS) { | |
2817 | ret = -EIO; | |
2818 | goto out_herr; | |
2819 | } | |
2820 | ||
7a291083 JBT |
2821 | adapter->max_mc_mac = cb->max_mc_mac - 1; |
2822 | ret = 0; | |
2823 | ||
2824 | out_herr: | |
3faf2693 | 2825 | free_page((unsigned long)cb); |
7a291083 JBT |
2826 | out: |
2827 | return ret; | |
2828 | } | |
2829 | ||
1886e5d2 | 2830 | static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
7a291083 | 2831 | { |
7a291083 | 2832 | struct hcp_ehea_port_cb4 *cb4; |
1acf2318 JBT |
2833 | u64 hret; |
2834 | int ret = 0; | |
7a291083 | 2835 | |
1acf2318 | 2836 | *jumbo = 0; |
7a291083 | 2837 | |
1acf2318 | 2838 | /* (Try to) enable *jumbo frames */ |
3faf2693 | 2839 | cb4 = (void *)get_zeroed_page(GFP_KERNEL); |
7a291083 | 2840 | if (!cb4) { |
8c4877a4 | 2841 | pr_err("no mem for cb4\n"); |
1acf2318 JBT |
2842 | ret = -ENOMEM; |
2843 | goto out; | |
7a291083 | 2844 | } else { |
1acf2318 | 2845 | hret = ehea_h_query_ehea_port(port->adapter->handle, |
9c750b7d TK |
2846 | port->logical_port_id, |
2847 | H_PORT_CB4, | |
2848 | H_PORT_CB4_JUMBO, cb4); | |
9c750b7d TK |
2849 | if (hret == H_SUCCESS) { |
2850 | if (cb4->jumbo_frame) | |
1acf2318 | 2851 | *jumbo = 1; |
9c750b7d TK |
2852 | else { |
2853 | cb4->jumbo_frame = 1; | |
1acf2318 JBT |
2854 | hret = ehea_h_modify_ehea_port(port->adapter-> |
2855 | handle, | |
9c750b7d | 2856 | port-> |
1acf2318 | 2857 | logical_port_id, |
9c750b7d TK |
2858 | H_PORT_CB4, |
2859 | H_PORT_CB4_JUMBO, | |
2860 | cb4); | |
2861 | if (hret == H_SUCCESS) | |
1acf2318 | 2862 | *jumbo = 1; |
9c750b7d | 2863 | } |
1acf2318 JBT |
2864 | } else |
2865 | ret = -EINVAL; | |
2866 | ||
3faf2693 | 2867 | free_page((unsigned long)cb4); |
7a291083 | 2868 | } |
1acf2318 JBT |
2869 | out: |
2870 | return ret; | |
2871 | } | |
2872 | ||
2873 | static ssize_t ehea_show_port_id(struct device *dev, | |
2874 | struct device_attribute *attr, char *buf) | |
2875 | { | |
2876 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
a8e34fda | 2877 | return sprintf(buf, "%d", port->logical_port_id); |
1acf2318 JBT |
2878 | } |
2879 | ||
d3757ba4 | 2880 | static DEVICE_ATTR(log_port_id, 0444, ehea_show_port_id, NULL); |
1acf2318 | 2881 | |
0297be07 | 2882 | static void logical_port_release(struct device *dev) |
1acf2318 JBT |
2883 | { |
2884 | struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); | |
61c7a080 | 2885 | of_node_put(port->ofdev.dev.of_node); |
1acf2318 JBT |
2886 | } |
2887 | ||
2888 | static struct device *ehea_register_port(struct ehea_port *port, | |
2889 | struct device_node *dn) | |
2890 | { | |
2891 | int ret; | |
2892 | ||
61c7a080 | 2893 | port->ofdev.dev.of_node = of_node_get(dn); |
6b08f3ae | 2894 | port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
d1dea38d | 2895 | port->ofdev.dev.bus = &ibmebus_bus_type; |
1acf2318 | 2896 | |
db1d7bf7 | 2897 | dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++); |
1acf2318 JBT |
2898 | port->ofdev.dev.release = logical_port_release; |
2899 | ||
2900 | ret = of_device_register(&port->ofdev); | |
2901 | if (ret) { | |
8c4877a4 | 2902 | pr_err("failed to register device. ret=%d\n", ret); |
1acf2318 JBT |
2903 | goto out; |
2904 | } | |
2905 | ||
2906 | ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
d1d25aab | 2907 | if (ret) { |
8c4877a4 | 2908 | pr_err("failed to register attributes, ret=%d\n", ret); |
1acf2318 JBT |
2909 | goto out_unreg_of_dev; |
2910 | } | |
e542aa6b | 2911 | |
1acf2318 JBT |
2912 | return &port->ofdev.dev; |
2913 | ||
2914 | out_unreg_of_dev: | |
2915 | of_device_unregister(&port->ofdev); | |
2916 | out: | |
2917 | return NULL; | |
2918 | } | |
2919 | ||
2920 | static void ehea_unregister_port(struct ehea_port *port) | |
2921 | { | |
2922 | device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); | |
2923 | of_device_unregister(&port->ofdev); | |
2924 | } | |
2925 | ||
086c1b2c TK |
2926 | static const struct net_device_ops ehea_netdev_ops = { |
2927 | .ndo_open = ehea_open, | |
2928 | .ndo_stop = ehea_stop, | |
2929 | .ndo_start_xmit = ehea_start_xmit, | |
239c562c | 2930 | .ndo_get_stats64 = ehea_get_stats64, |
086c1b2c | 2931 | .ndo_set_mac_address = ehea_set_mac_addr, |
240c102d | 2932 | .ndo_validate_addr = eth_validate_addr, |
afc4b13d | 2933 | .ndo_set_rx_mode = ehea_set_multicast_list, |
086c1b2c | 2934 | .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid, |
32e8f9a8 AB |
2935 | .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid, |
2936 | .ndo_tx_timeout = ehea_tx_watchdog, | |
086c1b2c TK |
2937 | }; |
2938 | ||
1886e5d2 | 2939 | static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, |
1acf2318 JBT |
2940 | u32 logical_port_id, |
2941 | struct device_node *dn) | |
2942 | { | |
2943 | int ret; | |
2944 | struct net_device *dev; | |
2945 | struct ehea_port *port; | |
2946 | struct device *port_dev; | |
2947 | int jumbo; | |
2948 | ||
2949 | /* allocate memory for the port structures */ | |
b9564468 | 2950 | dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES); |
1acf2318 JBT |
2951 | |
2952 | if (!dev) { | |
1acf2318 JBT |
2953 | ret = -ENOMEM; |
2954 | goto out_err; | |
2955 | } | |
2956 | ||
2957 | port = netdev_priv(dev); | |
2958 | ||
a5af6ad3 | 2959 | mutex_init(&port->port_lock); |
1acf2318 JBT |
2960 | port->state = EHEA_PORT_DOWN; |
2961 | port->sig_comp_iv = sq_entries / 10; | |
2962 | ||
2963 | port->adapter = adapter; | |
2964 | port->netdev = dev; | |
2965 | port->logical_port_id = logical_port_id; | |
2966 | ||
2967 | port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); | |
2968 | ||
2969 | port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); | |
2970 | if (!port->mc_list) { | |
2971 | ret = -ENOMEM; | |
2972 | goto out_free_ethdev; | |
2973 | } | |
2974 | ||
2975 | INIT_LIST_HEAD(&port->mc_list->list); | |
2976 | ||
2977 | ret = ehea_sense_port_attr(port); | |
2978 | if (ret) | |
2979 | goto out_free_mc_list; | |
2980 | ||
b9564468 | 2981 | netif_set_real_num_rx_queues(dev, port->num_def_qps); |
723f28e4 | 2982 | netif_set_real_num_tx_queues(dev, port->num_def_qps); |
b9564468 | 2983 | |
1acf2318 JBT |
2984 | port_dev = ehea_register_port(port, dn); |
2985 | if (!port_dev) | |
2986 | goto out_free_mc_list; | |
2987 | ||
2988 | SET_NETDEV_DEV(dev, port_dev); | |
7a291083 JBT |
2989 | |
2990 | /* initialize net_device structure */ | |
7a291083 JBT |
2991 | memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
2992 | ||
086c1b2c TK |
2993 | dev->netdev_ops = &ehea_netdev_ops; |
2994 | ehea_set_ethtool_ops(dev); | |
2995 | ||
55fbbe46 DM |
2996 | dev->hw_features = NETIF_F_SG | NETIF_F_TSO | |
2997 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX; | |
28e24c62 | 2998 | dev->features = NETIF_F_SG | NETIF_F_TSO | |
55fbbe46 DM |
2999 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | |
3000 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | | |
3001 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM; | |
076f2032 AB |
3002 | dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA | |
3003 | NETIF_F_IP_CSUM; | |
7a291083 JBT |
3004 | dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; |
3005 | ||
3d5d96ac JW |
3006 | /* MTU range: 68 - 9022 */ |
3007 | dev->min_mtu = ETH_MIN_MTU; | |
3008 | dev->max_mtu = EHEA_MAX_PACKET_SIZE; | |
3009 | ||
c4028958 | 3010 | INIT_WORK(&port->reset_task, ehea_reset_port); |
2aefcad8 | 3011 | INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats); |
7a291083 | 3012 | |
21ccc793 AB |
3013 | init_waitqueue_head(&port->swqe_avail_wq); |
3014 | init_waitqueue_head(&port->restart_wq); | |
3015 | ||
7a291083 JBT |
3016 | ret = register_netdev(dev); |
3017 | if (ret) { | |
8c4877a4 | 3018 | pr_err("register_netdev failed. ret=%d\n", ret); |
21eee2dd | 3019 | goto out_unreg_port; |
7a291083 JBT |
3020 | } |
3021 | ||
1acf2318 | 3022 | ret = ehea_get_jumboframe_status(port, &jumbo); |
e542aa6b | 3023 | if (ret) |
8c4877a4 | 3024 | netdev_err(dev, "failed determining jumbo frame status\n"); |
1acf2318 | 3025 | |
8c4877a4 JP |
3026 | netdev_info(dev, "Jumbo frames are %sabled\n", |
3027 | jumbo == 1 ? "en" : "dis"); | |
9c750b7d | 3028 | |
44c82152 TK |
3029 | adapter->active_ports++; |
3030 | ||
1acf2318 | 3031 | return port; |
7a291083 | 3032 | |
1acf2318 JBT |
3033 | out_unreg_port: |
3034 | ehea_unregister_port(port); | |
3035 | ||
3036 | out_free_mc_list: | |
7a291083 | 3037 | kfree(port->mc_list); |
1acf2318 JBT |
3038 | |
3039 | out_free_ethdev: | |
3040 | free_netdev(dev); | |
3041 | ||
3042 | out_err: | |
8c4877a4 JP |
3043 | pr_err("setting up logical port with id=%d failed, ret=%d\n", |
3044 | logical_port_id, ret); | |
1acf2318 JBT |
3045 | return NULL; |
3046 | } | |
3047 | ||
3048 | static void ehea_shutdown_single_port(struct ehea_port *port) | |
3049 | { | |
7fb1c2ac | 3050 | struct ehea_adapter *adapter = port->adapter; |
f5c35cc1 TH |
3051 | |
3052 | cancel_work_sync(&port->reset_task); | |
2aefcad8 | 3053 | cancel_delayed_work_sync(&port->stats_work); |
1acf2318 JBT |
3054 | unregister_netdev(port->netdev); |
3055 | ehea_unregister_port(port); | |
3056 | kfree(port->mc_list); | |
3057 | free_netdev(port->netdev); | |
7fb1c2ac | 3058 | adapter->active_ports--; |
7a291083 JBT |
3059 | } |
3060 | ||
3061 | static int ehea_setup_ports(struct ehea_adapter *adapter) | |
3062 | { | |
1acf2318 JBT |
3063 | struct device_node *lhea_dn; |
3064 | struct device_node *eth_dn = NULL; | |
d1d25aab | 3065 | |
9f9a3b8a | 3066 | const u32 *dn_log_port_id; |
1acf2318 JBT |
3067 | int i = 0; |
3068 | ||
61c7a080 | 3069 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3070 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3071 | |
40cd3a45 | 3072 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3073 | NULL); |
1acf2318 | 3074 | if (!dn_log_port_id) { |
f7ce9103 | 3075 | pr_err("bad device node: eth_dn name=%pOF\n", eth_dn); |
1acf2318 JBT |
3076 | continue; |
3077 | } | |
7a291083 | 3078 | |
1211bb6d | 3079 | if (ehea_add_adapter_mr(adapter)) { |
8c4877a4 | 3080 | pr_err("creating MR failed\n"); |
1211bb6d TK |
3081 | of_node_put(eth_dn); |
3082 | return -EIO; | |
3083 | } | |
3084 | ||
1acf2318 JBT |
3085 | adapter->port[i] = ehea_setup_single_port(adapter, |
3086 | *dn_log_port_id, | |
3087 | eth_dn); | |
7a291083 | 3088 | if (adapter->port[i]) |
8c4877a4 JP |
3089 | netdev_info(adapter->port[i]->netdev, |
3090 | "logical port id #%d\n", *dn_log_port_id); | |
1211bb6d TK |
3091 | else |
3092 | ehea_remove_adapter_mr(adapter); | |
3093 | ||
1acf2318 | 3094 | i++; |
ee289b64 | 3095 | } |
1211bb6d | 3096 | return 0; |
1acf2318 JBT |
3097 | } |
3098 | ||
e542aa6b JBT |
3099 | static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
3100 | u32 logical_port_id) | |
1acf2318 JBT |
3101 | { |
3102 | struct device_node *lhea_dn; | |
3103 | struct device_node *eth_dn = NULL; | |
9f9a3b8a | 3104 | const u32 *dn_log_port_id; |
1acf2318 | 3105 | |
61c7a080 | 3106 | lhea_dn = adapter->ofdev->dev.of_node; |
1eef4e04 | 3107 | while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
e542aa6b | 3108 | |
40cd3a45 | 3109 | dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
d1d25aab | 3110 | NULL); |
1acf2318 JBT |
3111 | if (dn_log_port_id) |
3112 | if (*dn_log_port_id == logical_port_id) | |
3113 | return eth_dn; | |
ee289b64 | 3114 | } |
1acf2318 JBT |
3115 | |
3116 | return NULL; | |
3117 | } | |
3118 | ||
3119 | static ssize_t ehea_probe_port(struct device *dev, | |
3120 | struct device_attribute *attr, | |
3121 | const char *buf, size_t count) | |
3122 | { | |
c7ae011d | 3123 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3124 | struct ehea_port *port; |
3125 | struct device_node *eth_dn = NULL; | |
3126 | int i; | |
3127 | ||
3128 | u32 logical_port_id; | |
3129 | ||
a8e34fda | 3130 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3131 | |
3132 | port = ehea_get_port(adapter, logical_port_id); | |
3133 | ||
3134 | if (port) { | |
8c4877a4 JP |
3135 | netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n", |
3136 | logical_port_id); | |
1acf2318 | 3137 | return -EINVAL; |
7a291083 | 3138 | } |
e542aa6b | 3139 | |
1acf2318 | 3140 | eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
7a291083 | 3141 | |
1acf2318 | 3142 | if (!eth_dn) { |
8c4877a4 | 3143 | pr_info("no logical port with id %d found\n", logical_port_id); |
1acf2318 JBT |
3144 | return -EINVAL; |
3145 | } | |
e542aa6b | 3146 | |
1211bb6d | 3147 | if (ehea_add_adapter_mr(adapter)) { |
8c4877a4 | 3148 | pr_err("creating MR failed\n"); |
be693df3 | 3149 | of_node_put(eth_dn); |
1211bb6d TK |
3150 | return -EIO; |
3151 | } | |
3152 | ||
1acf2318 | 3153 | port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
7a291083 | 3154 | |
1eef4e04 JBT |
3155 | of_node_put(eth_dn); |
3156 | ||
1acf2318 | 3157 | if (port) { |
508d2b5d | 3158 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3159 | if (!adapter->port[i]) { |
3160 | adapter->port[i] = port; | |
3161 | break; | |
3162 | } | |
7a291083 | 3163 | |
8c4877a4 JP |
3164 | netdev_info(port->netdev, "added: (logical port id=%d)\n", |
3165 | logical_port_id); | |
1211bb6d TK |
3166 | } else { |
3167 | ehea_remove_adapter_mr(adapter); | |
e542aa6b | 3168 | return -EIO; |
1211bb6d | 3169 | } |
7a291083 | 3170 | |
1acf2318 JBT |
3171 | return (ssize_t) count; |
3172 | } | |
3173 | ||
3174 | static ssize_t ehea_remove_port(struct device *dev, | |
3175 | struct device_attribute *attr, | |
3176 | const char *buf, size_t count) | |
3177 | { | |
c7ae011d | 3178 | struct ehea_adapter *adapter = dev_get_drvdata(dev); |
1acf2318 JBT |
3179 | struct ehea_port *port; |
3180 | int i; | |
3181 | u32 logical_port_id; | |
3182 | ||
a8e34fda | 3183 | sscanf(buf, "%d", &logical_port_id); |
1acf2318 JBT |
3184 | |
3185 | port = ehea_get_port(adapter, logical_port_id); | |
3186 | ||
3187 | if (port) { | |
8c4877a4 JP |
3188 | netdev_info(port->netdev, "removed: (logical port id=%d)\n", |
3189 | logical_port_id); | |
1acf2318 JBT |
3190 | |
3191 | ehea_shutdown_single_port(port); | |
3192 | ||
508d2b5d | 3193 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
1acf2318 JBT |
3194 | if (adapter->port[i] == port) { |
3195 | adapter->port[i] = NULL; | |
3196 | break; | |
3197 | } | |
3198 | } else { | |
8c4877a4 JP |
3199 | pr_err("removing port with logical port id=%d failed. port not configured.\n", |
3200 | logical_port_id); | |
1acf2318 JBT |
3201 | return -EINVAL; |
3202 | } | |
3203 | ||
1211bb6d TK |
3204 | ehea_remove_adapter_mr(adapter); |
3205 | ||
1acf2318 JBT |
3206 | return (ssize_t) count; |
3207 | } | |
3208 | ||
d3757ba4 JP |
3209 | static DEVICE_ATTR(probe_port, 0200, NULL, ehea_probe_port); |
3210 | static DEVICE_ATTR(remove_port, 0200, NULL, ehea_remove_port); | |
1acf2318 | 3211 | |
1886e5d2 | 3212 | static int ehea_create_device_sysfs(struct platform_device *dev) |
1acf2318 | 3213 | { |
6b08f3ae | 3214 | int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
1acf2318 JBT |
3215 | if (ret) |
3216 | goto out; | |
3217 | ||
6b08f3ae | 3218 | ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
1acf2318 | 3219 | out: |
7a291083 JBT |
3220 | return ret; |
3221 | } | |
3222 | ||
1886e5d2 | 3223 | static void ehea_remove_device_sysfs(struct platform_device *dev) |
1acf2318 | 3224 | { |
6b08f3ae JF |
3225 | device_remove_file(&dev->dev, &dev_attr_probe_port); |
3226 | device_remove_file(&dev->dev, &dev_attr_remove_port); | |
1acf2318 JBT |
3227 | } |
3228 | ||
aa183323 AB |
3229 | static int ehea_reboot_notifier(struct notifier_block *nb, |
3230 | unsigned long action, void *unused) | |
3231 | { | |
3232 | if (action == SYS_RESTART) { | |
3233 | pr_info("Reboot: freeing all eHEA resources\n"); | |
3234 | ibmebus_unregister_driver(&ehea_driver); | |
3235 | } | |
3236 | return NOTIFY_DONE; | |
3237 | } | |
3238 | ||
3239 | static struct notifier_block ehea_reboot_nb = { | |
3240 | .notifier_call = ehea_reboot_notifier, | |
3241 | }; | |
3242 | ||
3243 | static int ehea_mem_notifier(struct notifier_block *nb, | |
3244 | unsigned long action, void *data) | |
3245 | { | |
3246 | int ret = NOTIFY_BAD; | |
3247 | struct memory_notify *arg = data; | |
3248 | ||
3249 | mutex_lock(&dlpar_mem_lock); | |
3250 | ||
3251 | switch (action) { | |
3252 | case MEM_CANCEL_OFFLINE: | |
3253 | pr_info("memory offlining canceled"); | |
3254 | /* Fall through: re-add canceled memory block */ | |
3255 | ||
3256 | case MEM_ONLINE: | |
3257 | pr_info("memory is going online"); | |
3258 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
3259 | if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages)) | |
3260 | goto out_unlock; | |
3261 | ehea_rereg_mrs(); | |
3262 | break; | |
3263 | ||
3264 | case MEM_GOING_OFFLINE: | |
3265 | pr_info("memory is going offline"); | |
3266 | set_bit(__EHEA_STOP_XFER, &ehea_driver_flags); | |
3267 | if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages)) | |
3268 | goto out_unlock; | |
3269 | ehea_rereg_mrs(); | |
3270 | break; | |
3271 | ||
3272 | default: | |
3273 | break; | |
3274 | } | |
3275 | ||
3276 | ehea_update_firmware_handles(); | |
3277 | ret = NOTIFY_OK; | |
3278 | ||
3279 | out_unlock: | |
3280 | mutex_unlock(&dlpar_mem_lock); | |
3281 | return ret; | |
3282 | } | |
3283 | ||
3284 | static struct notifier_block ehea_mem_nb = { | |
3285 | .notifier_call = ehea_mem_notifier, | |
3286 | }; | |
3287 | ||
3288 | static void ehea_crash_handler(void) | |
3289 | { | |
3290 | int i; | |
3291 | ||
3292 | if (ehea_fw_handles.arr) | |
3293 | for (i = 0; i < ehea_fw_handles.num_entries; i++) | |
3294 | ehea_h_free_resource(ehea_fw_handles.arr[i].adh, | |
3295 | ehea_fw_handles.arr[i].fwh, | |
3296 | FORCE_FREE); | |
3297 | ||
3298 | if (ehea_bcmc_regs.arr) | |
3299 | for (i = 0; i < ehea_bcmc_regs.num_entries; i++) | |
3300 | ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh, | |
3301 | ehea_bcmc_regs.arr[i].port_id, | |
3302 | ehea_bcmc_regs.arr[i].reg_type, | |
3303 | ehea_bcmc_regs.arr[i].macaddr, | |
3304 | 0, H_DEREG_BCMC); | |
3305 | } | |
3306 | ||
3307 | static atomic_t ehea_memory_hooks_registered; | |
3308 | ||
3309 | /* Register memory hooks on probe of first adapter */ | |
3310 | static int ehea_register_memory_hooks(void) | |
3311 | { | |
3312 | int ret = 0; | |
3313 | ||
3051f392 | 3314 | if (atomic_inc_return(&ehea_memory_hooks_registered) > 1) |
aa183323 AB |
3315 | return 0; |
3316 | ||
3317 | ret = ehea_create_busmap(); | |
3318 | if (ret) { | |
3319 | pr_info("ehea_create_busmap failed\n"); | |
3320 | goto out; | |
3321 | } | |
3322 | ||
3323 | ret = register_reboot_notifier(&ehea_reboot_nb); | |
3324 | if (ret) { | |
3325 | pr_info("register_reboot_notifier failed\n"); | |
3326 | goto out; | |
3327 | } | |
3328 | ||
3329 | ret = register_memory_notifier(&ehea_mem_nb); | |
3330 | if (ret) { | |
3331 | pr_info("register_memory_notifier failed\n"); | |
3332 | goto out2; | |
3333 | } | |
3334 | ||
3335 | ret = crash_shutdown_register(ehea_crash_handler); | |
3336 | if (ret) { | |
3337 | pr_info("crash_shutdown_register failed\n"); | |
3338 | goto out3; | |
3339 | } | |
3340 | ||
3341 | return 0; | |
3342 | ||
3343 | out3: | |
3344 | unregister_memory_notifier(&ehea_mem_nb); | |
3345 | out2: | |
3346 | unregister_reboot_notifier(&ehea_reboot_nb); | |
3347 | out: | |
3051f392 | 3348 | atomic_dec(&ehea_memory_hooks_registered); |
aa183323 AB |
3349 | return ret; |
3350 | } | |
3351 | ||
3352 | static void ehea_unregister_memory_hooks(void) | |
3353 | { | |
3051f392 ME |
3354 | /* Only remove the hooks if we've registered them */ |
3355 | if (atomic_read(&ehea_memory_hooks_registered) == 0) | |
aa183323 AB |
3356 | return; |
3357 | ||
3358 | unregister_reboot_notifier(&ehea_reboot_nb); | |
3359 | if (crash_shutdown_unregister(ehea_crash_handler)) | |
3360 | pr_info("failed unregistering crash handler\n"); | |
3361 | unregister_memory_notifier(&ehea_mem_nb); | |
3362 | } | |
3363 | ||
c45640e4 | 3364 | static int ehea_probe_adapter(struct platform_device *dev) |
7a291083 JBT |
3365 | { |
3366 | struct ehea_adapter *adapter; | |
9f9a3b8a | 3367 | const u64 *adapter_handle; |
7a291083 | 3368 | int ret; |
c2f1244b | 3369 | int i; |
7a291083 | 3370 | |
aa183323 AB |
3371 | ret = ehea_register_memory_hooks(); |
3372 | if (ret) | |
3373 | return ret; | |
3374 | ||
61c7a080 | 3375 | if (!dev || !dev->dev.of_node) { |
8c4877a4 | 3376 | pr_err("Invalid ibmebus device probed\n"); |
1eef4e04 JBT |
3377 | return -EINVAL; |
3378 | } | |
3379 | ||
09b38aa1 | 3380 | adapter = devm_kzalloc(&dev->dev, sizeof(*adapter), GFP_KERNEL); |
7a291083 JBT |
3381 | if (!adapter) { |
3382 | ret = -ENOMEM; | |
6b08f3ae | 3383 | dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
7a291083 JBT |
3384 | goto out; |
3385 | } | |
3386 | ||
44c82152 TK |
3387 | list_add(&adapter->list, &adapter_list); |
3388 | ||
6b08f3ae | 3389 | adapter->ofdev = dev; |
1acf2318 | 3390 | |
61c7a080 | 3391 | adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle", |
d1d25aab | 3392 | NULL); |
061bf3cd TK |
3393 | if (adapter_handle) |
3394 | adapter->handle = *adapter_handle; | |
3395 | ||
3396 | if (!adapter->handle) { | |
6b08f3ae | 3397 | dev_err(&dev->dev, "failed getting handle for adapter" |
f7ce9103 | 3398 | " '%pOF'\n", dev->dev.of_node); |
7a291083 JBT |
3399 | ret = -ENODEV; |
3400 | goto out_free_ad; | |
3401 | } | |
3402 | ||
7a291083 JBT |
3403 | adapter->pd = EHEA_PD_ID; |
3404 | ||
8513fbd8 | 3405 | platform_set_drvdata(dev, adapter); |
7a291083 | 3406 | |
7a291083 JBT |
3407 | |
3408 | /* initialize adapter and ports */ | |
3409 | /* get adapter properties */ | |
3410 | ret = ehea_sense_adapter_attr(adapter); | |
3411 | if (ret) { | |
898eb71c | 3412 | dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
1211bb6d | 3413 | goto out_free_ad; |
7a291083 | 3414 | } |
7a291083 JBT |
3415 | |
3416 | adapter->neq = ehea_create_eq(adapter, | |
3417 | EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); | |
3418 | if (!adapter->neq) { | |
1eef4e04 | 3419 | ret = -EIO; |
898eb71c | 3420 | dev_err(&dev->dev, "NEQ creation failed\n"); |
1211bb6d | 3421 | goto out_free_ad; |
7a291083 JBT |
3422 | } |
3423 | ||
3424 | tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, | |
3425 | (unsigned long)adapter); | |
3426 | ||
1eef4e04 JBT |
3427 | ret = ehea_create_device_sysfs(dev); |
3428 | if (ret) | |
c2f1244b | 3429 | goto out_kill_eq; |
1acf2318 | 3430 | |
7a291083 JBT |
3431 | ret = ehea_setup_ports(adapter); |
3432 | if (ret) { | |
898eb71c | 3433 | dev_err(&dev->dev, "setup_ports failed\n"); |
1acf2318 | 3434 | goto out_rem_dev_sysfs; |
7a291083 JBT |
3435 | } |
3436 | ||
c2f1244b | 3437 | ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
46c915f8 | 3438 | ehea_interrupt_neq, 0, |
c2f1244b TLSC |
3439 | "ehea_neq", adapter); |
3440 | if (ret) { | |
3441 | dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); | |
3442 | goto out_shutdown_ports; | |
3443 | } | |
3444 | ||
380ec964 TLSC |
3445 | /* Handle any events that might be pending. */ |
3446 | tasklet_hi_schedule(&adapter->neq_tasklet); | |
c2f1244b | 3447 | |
7a291083 JBT |
3448 | ret = 0; |
3449 | goto out; | |
3450 | ||
c2f1244b TLSC |
3451 | out_shutdown_ports: |
3452 | for (i = 0; i < EHEA_MAX_PORTS; i++) | |
3453 | if (adapter->port[i]) { | |
3454 | ehea_shutdown_single_port(adapter->port[i]); | |
3455 | adapter->port[i] = NULL; | |
3456 | } | |
3457 | ||
1acf2318 JBT |
3458 | out_rem_dev_sysfs: |
3459 | ehea_remove_device_sysfs(dev); | |
3460 | ||
7a291083 JBT |
3461 | out_kill_eq: |
3462 | ehea_destroy_eq(adapter->neq); | |
3463 | ||
7a291083 | 3464 | out_free_ad: |
51621fbd | 3465 | list_del(&adapter->list); |
21eee2dd | 3466 | |
7a291083 | 3467 | out: |
21eee2dd | 3468 | ehea_update_firmware_handles(); |
52e21b1b | 3469 | |
7a291083 JBT |
3470 | return ret; |
3471 | } | |
3472 | ||
0297be07 | 3473 | static int ehea_remove(struct platform_device *dev) |
7a291083 | 3474 | { |
8513fbd8 | 3475 | struct ehea_adapter *adapter = platform_get_drvdata(dev); |
7a291083 JBT |
3476 | int i; |
3477 | ||
1acf2318 | 3478 | for (i = 0; i < EHEA_MAX_PORTS; i++) |
7a291083 JBT |
3479 | if (adapter->port[i]) { |
3480 | ehea_shutdown_single_port(adapter->port[i]); | |
3481 | adapter->port[i] = NULL; | |
3482 | } | |
1acf2318 JBT |
3483 | |
3484 | ehea_remove_device_sysfs(dev); | |
3485 | ||
6b08f3ae | 3486 | ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
d4150a27 | 3487 | tasklet_kill(&adapter->neq_tasklet); |
7a291083 JBT |
3488 | |
3489 | ehea_destroy_eq(adapter->neq); | |
1211bb6d | 3490 | ehea_remove_adapter_mr(adapter); |
44c82152 | 3491 | list_del(&adapter->list); |
44c82152 | 3492 | |
21eee2dd | 3493 | ehea_update_firmware_handles(); |
21eee2dd | 3494 | |
7a291083 JBT |
3495 | return 0; |
3496 | } | |
3497 | ||
3498 | static int check_module_parm(void) | |
3499 | { | |
3500 | int ret = 0; | |
3501 | ||
3502 | if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || | |
3503 | (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { | |
8c4877a4 | 3504 | pr_info("Bad parameter: rq1_entries\n"); |
7a291083 JBT |
3505 | ret = -EINVAL; |
3506 | } | |
3507 | if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || | |
3508 | (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { | |
8c4877a4 | 3509 | pr_info("Bad parameter: rq2_entries\n"); |
7a291083 JBT |
3510 | ret = -EINVAL; |
3511 | } | |
3512 | if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || | |
3513 | (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { | |
8c4877a4 | 3514 | pr_info("Bad parameter: rq3_entries\n"); |
7a291083 JBT |
3515 | ret = -EINVAL; |
3516 | } | |
3517 | if ((sq_entries < EHEA_MIN_ENTRIES_QP) || | |
3518 | (sq_entries > EHEA_MAX_ENTRIES_SQ)) { | |
8c4877a4 | 3519 | pr_info("Bad parameter: sq_entries\n"); |
7a291083 JBT |
3520 | ret = -EINVAL; |
3521 | } | |
3522 | ||
3523 | return ret; | |
3524 | } | |
3525 | ||
ce8e0cd8 | 3526 | static ssize_t capabilities_show(struct device_driver *drv, char *buf) |
4c3ca4da JBT |
3527 | { |
3528 | return sprintf(buf, "%d", EHEA_CAPABILITIES); | |
3529 | } | |
3530 | ||
ce8e0cd8 | 3531 | static DRIVER_ATTR_RO(capabilities); |
4c3ca4da | 3532 | |
1886e5d2 | 3533 | static int __init ehea_module_init(void) |
7a291083 JBT |
3534 | { |
3535 | int ret; | |
3536 | ||
8c4877a4 | 3537 | pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION); |
7a291083 | 3538 | |
21eee2dd TK |
3539 | memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles)); |
3540 | memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs)); | |
3541 | ||
9f71a568 | 3542 | mutex_init(&ehea_fw_handles.lock); |
5c2cec14 | 3543 | spin_lock_init(&ehea_bcmc_regs.lock); |
44c82152 | 3544 | |
7a291083 JBT |
3545 | ret = check_module_parm(); |
3546 | if (ret) | |
3547 | goto out; | |
44c82152 | 3548 | |
7a291083 | 3549 | ret = ibmebus_register_driver(&ehea_driver); |
4c3ca4da | 3550 | if (ret) { |
8c4877a4 | 3551 | pr_err("failed registering eHEA device driver on ebus\n"); |
aa183323 | 3552 | goto out; |
4c3ca4da JBT |
3553 | } |
3554 | ||
3555 | ret = driver_create_file(&ehea_driver.driver, | |
3556 | &driver_attr_capabilities); | |
3557 | if (ret) { | |
8c4877a4 JP |
3558 | pr_err("failed to register capabilities attribute, ret=%d\n", |
3559 | ret); | |
aa183323 | 3560 | goto out2; |
4c3ca4da | 3561 | } |
7a291083 | 3562 | |
21eee2dd TK |
3563 | return ret; |
3564 | ||
21eee2dd | 3565 | out2: |
aa183323 | 3566 | ibmebus_unregister_driver(&ehea_driver); |
7a291083 JBT |
3567 | out: |
3568 | return ret; | |
3569 | } | |
3570 | ||
3571 | static void __exit ehea_module_exit(void) | |
3572 | { | |
4c3ca4da | 3573 | driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
7a291083 | 3574 | ibmebus_unregister_driver(&ehea_driver); |
aa183323 | 3575 | ehea_unregister_memory_hooks(); |
21eee2dd TK |
3576 | kfree(ehea_fw_handles.arr); |
3577 | kfree(ehea_bcmc_regs.arr); | |
44c82152 | 3578 | ehea_destroy_busmap(); |
7a291083 JBT |
3579 | } |
3580 | ||
3581 | module_init(ehea_module_init); | |
3582 | module_exit(ehea_module_exit); |