1 /*-
2 * SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
3 *
4 * Copyright (c) 2021 - 2023 Intel Corporation
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenFabrics.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/bus.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/sysctl.h>
41 #include <machine/bus.h>
42 #include <linux/device.h>
43 #include <sys/rman.h>
44
45 #include "ice_rdma.h"
46 #include "irdma_main.h"
47 #include "icrdma_hw.h"
48
49 #include "irdma_if.h"
50 #include "irdma_di_if.h"
51
52 /**
53 * Driver version
54 */
55 char irdma_driver_version[] = "1.2.36-k";
56
57 /**
58 * irdma_init_tunable - prepare tunables
59 * @rf: RDMA PCI function
60 * @pf_id: id of the pf
61 */
62 static void
irdma_init_tunable(struct irdma_pci_f * rf,uint8_t pf_id)63 irdma_init_tunable(struct irdma_pci_f *rf, uint8_t pf_id)
64 {
65 struct sysctl_oid_list *irdma_oid_list;
66 struct irdma_tunable_info *t_info = &rf->tun_info;
67 char pf_name[16];
68
69 snprintf(pf_name, 15, "irdma%d", pf_id);
70 sysctl_ctx_init(&t_info->irdma_sysctl_ctx);
71
72 t_info->irdma_sysctl_tree = SYSCTL_ADD_NODE(&t_info->irdma_sysctl_ctx,
73 SYSCTL_STATIC_CHILDREN(_dev),
74 OID_AUTO, pf_name,
75 CTLFLAG_RD, NULL, "");
76
77 irdma_oid_list = SYSCTL_CHILDREN(t_info->irdma_sysctl_tree);
78
79 t_info->sws_sysctl_tree = SYSCTL_ADD_NODE(&t_info->irdma_sysctl_ctx,
80 irdma_oid_list, OID_AUTO,
81 "sw_stats", CTLFLAG_RD,
82 NULL, "");
83 /*
84 * debug mask setting
85 */
86 SYSCTL_ADD_S32(&t_info->irdma_sysctl_ctx, irdma_oid_list,
87 OID_AUTO, "debug", CTLFLAG_RWTUN, &rf->sc_dev.debug_mask,
88 0, "irdma debug");
89
90 /*
91 * RoCEv2/iWARP setting RoCEv2 the default mode
92 */
93 t_info->roce_ena = 1;
94 SYSCTL_ADD_U8(&t_info->irdma_sysctl_ctx, irdma_oid_list, OID_AUTO,
95 "roce_enable", CTLFLAG_RDTUN, &t_info->roce_ena, 0,
96 "RoCEv2 mode enable");
97
98 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY;
99 if (t_info->roce_ena == 1)
100 rf->protocol_used = IRDMA_ROCE_PROTOCOL_ONLY;
101 else if (t_info->roce_ena != 0)
102 printf("%s:%d wrong roce_enable value (%d), using iWARP\n",
103 __func__, __LINE__, t_info->roce_ena);
104 printf("%s:%d protocol: %s, roce_enable value: %d\n", __func__, __LINE__,
105 (rf->protocol_used == IRDMA_IWARP_PROTOCOL_ONLY) ? "iWARP" : "RoCEv2",
106 t_info->roce_ena);
107
108 snprintf(t_info->drv_ver, IRDMA_VER_LEN, "%s", irdma_driver_version);
109 SYSCTL_ADD_STRING(&t_info->irdma_sysctl_ctx, irdma_oid_list,
110 OID_AUTO, "drv_ver", CTLFLAG_RDTUN, t_info->drv_ver,
111 IRDMA_VER_LEN, "driver version");
112
113 irdma_dcqcn_tunables_init(rf);
114 irdma_sysctl_settings(rf);
115 }
116
117 /**
118 * irdma_find_handler - obtain hdl object to identify pf
119 * @p_dev: the peer interface structure
120 */
121 static struct irdma_handler *
irdma_find_handler(struct ice_rdma_peer * p_dev)122 irdma_find_handler(struct ice_rdma_peer *p_dev)
123 {
124 struct irdma_handler *hdl;
125 unsigned long flags;
126
127 spin_lock_irqsave(&irdma_handler_lock, flags);
128 list_for_each_entry(hdl, &irdma_handlers, list) {
129 if (!hdl->iwdev->rf->peer_info)
130 continue;
131 if (hdl->iwdev->rf->peer_info->dev == p_dev->dev) {
132 spin_unlock_irqrestore(&irdma_handler_lock, flags);
133 return hdl;
134 }
135 }
136 spin_unlock_irqrestore(&irdma_handler_lock, flags);
137
138 return NULL;
139 }
140
141 /**
142 * peer_to_iwdev - return iwdev based on peer
143 * @peer: the peer interface structure
144 */
145 static struct irdma_device *
peer_to_iwdev(struct ice_rdma_peer * peer)146 peer_to_iwdev(struct ice_rdma_peer *peer)
147 {
148 struct irdma_handler *hdl;
149
150 hdl = irdma_find_handler(peer);
151 if (!hdl) {
152 printf("%s:%d rdma handler not found\n", __func__, __LINE__);
153 return NULL;
154 }
155
156 return hdl->iwdev;
157 }
158
159 /**
160 * irdma_get_qos_info - save qos info from parameters to internal struct
161 * @l2params: destination, qos, tc, mtu info structure
162 * @qos_info: source, DCB settings structure
163 */
164 static void
irdma_get_qos_info(struct irdma_pci_f * rf,struct irdma_l2params * l2params,struct ice_qos_params * qos_info)165 irdma_get_qos_info(struct irdma_pci_f *rf, struct irdma_l2params *l2params,
166 struct ice_qos_params *qos_info)
167 {
168 int i;
169 char txt[7][128] = {"", "", "", "", "", "", ""};
170 u8 len;
171
172 l2params->num_tc = qos_info->num_tc;
173 l2params->num_apps = qos_info->num_apps;
174 l2params->vsi_prio_type = qos_info->vsi_priority_type;
175 l2params->vsi_rel_bw = qos_info->vsi_relative_bw;
176 for (i = 0; i < l2params->num_tc; i++) {
177 l2params->tc_info[i].egress_virt_up =
178 qos_info->tc_info[i].egress_virt_up;
179 l2params->tc_info[i].ingress_virt_up =
180 qos_info->tc_info[i].ingress_virt_up;
181 l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type;
182 l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw;
183 l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx;
184 }
185 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++)
186 l2params->up2tc[i] = qos_info->up2tc[i];
187
188 if (qos_info->pfc_mode == IRDMA_QOS_MODE_DSCP) {
189 l2params->dscp_mode = true;
190 memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map));
191 }
192 if (!(rf->sc_dev.debug_mask & IRDMA_DEBUG_DCB))
193 return;
194 for (i = 0; i < l2params->num_tc; i++) {
195 len = strlen(txt[0]);
196 snprintf(txt[0] + len, sizeof(txt[0]) - 5, " %d",
197 l2params->tc_info[i].egress_virt_up);
198 len = strlen(txt[1]);
199 snprintf(txt[1] + len, sizeof(txt[1]) - 5, " %d",
200 l2params->tc_info[i].ingress_virt_up);
201 len = strlen(txt[2]);
202 snprintf(txt[2] + len, sizeof(txt[2]) - 5, " %d",
203 l2params->tc_info[i].prio_type);
204 len = strlen(txt[3]);
205 snprintf(txt[3] + len, sizeof(txt[3]) - 5, " %d",
206 l2params->tc_info[i].rel_bw);
207 len = strlen(txt[4]);
208 snprintf(txt[4] + len, sizeof(txt[4]) - 5, " %lu",
209 l2params->tc_info[i].tc_ctx);
210 }
211 len = strlen(txt[5]);
212 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++)
213 len += snprintf(txt[5] + len, sizeof(txt[5]) - 5, " %d",
214 l2params->up2tc[i]);
215 len = strlen(txt[6]);
216 for (i = 0; i < IRDMA_DSCP_NUM_VAL; i++)
217 len += snprintf(txt[6] + len, sizeof(txt[6]) - 5, " %d",
218 l2params->dscp_map[i]);
219 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "num_tc: %d\n", l2params->num_tc);
220 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "num_apps: %d\n", l2params->num_apps);
221 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "vsi_prio_type: %d\n", l2params->vsi_prio_type);
222 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "vsi_rel_bw: %d\n", l2params->vsi_rel_bw);
223 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "egress_virt_up: %s\n", txt[0]);
224 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "ingress_virt_up:%s\n", txt[1]);
225 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "prio_type: %s\n", txt[2]);
226 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "rel_bw: %s\n", txt[3]);
227 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "tc_ctx: %s\n", txt[4]);
228 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "up2tc: %s\n", txt[5]);
229 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_DCB, "dscp_mode: %s\n", txt[6]);
230
231 irdma_debug_buf(&rf->sc_dev, IRDMA_DEBUG_DCB, "l2params", l2params, sizeof(*l2params));
232 }
233
234 /**
235 * irdma_log_invalid_mtu - check mtu setting validity
236 * @mtu: mtu value
237 * @dev: hardware control device structure
238 */
239 static void
irdma_log_invalid_mtu(u16 mtu,struct irdma_sc_dev * dev)240 irdma_log_invalid_mtu(u16 mtu, struct irdma_sc_dev *dev)
241 {
242 if (mtu < IRDMA_MIN_MTU_IPV4)
243 irdma_dev_warn(to_ibdev(dev),
244 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 576 for IPv4\n",
245 mtu);
246 else if (mtu < IRDMA_MIN_MTU_IPV6)
247 irdma_dev_warn(to_ibdev(dev),
248 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 1280 for IPv6\n",
249 mtu);
250 }
251
252 /**
253 * irdma_get_event_name - convert type enum to string
254 * @type: event type enum
255 */
256 static const char *
irdma_get_event_name(enum ice_rdma_event_type type)257 irdma_get_event_name(enum ice_rdma_event_type type)
258 {
259 switch (type) {
260 case ICE_RDMA_EVENT_LINK_CHANGE:
261 return "LINK CHANGE";
262 case ICE_RDMA_EVENT_MTU_CHANGE:
263 return "MTU CHANGE";
264 case ICE_RDMA_EVENT_TC_CHANGE:
265 return "TC CHANGE";
266 case ICE_RDMA_EVENT_API_CHANGE:
267 return "API CHANGE";
268 case ICE_RDMA_EVENT_CRIT_ERR:
269 return "CRITICAL ERROR";
270 case ICE_RDMA_EVENT_RESET:
271 return "RESET";
272 case ICE_RDMA_EVENT_QSET_REGISTER:
273 return "QSET REGISTER";
274 case ICE_RDMA_EVENT_VSI_FILTER_UPDATE:
275 return "VSI FILTER UPDATE";
276 default:
277 return "UNKNOWN";
278 }
279 }
280
281 /**
282 * irdma_event_handler - handling events from lan driver
283 * @peer: the peer interface structure
284 * @event: event info structure
285 */
286 static void
irdma_event_handler(struct ice_rdma_peer * peer,struct ice_rdma_event * event)287 irdma_event_handler(struct ice_rdma_peer *peer, struct ice_rdma_event *event)
288 {
289 struct irdma_device *iwdev;
290 struct irdma_l2params l2params = {};
291
292 printf("%s:%d event_handler %s (%x) on pf %d (%d)\n", __func__, __LINE__,
293 irdma_get_event_name(event->type),
294 event->type, peer->pf_id, if_getdunit(peer->ifp));
295 iwdev = peer_to_iwdev(peer);
296 if (!iwdev) {
297 printf("%s:%d rdma device not found\n", __func__, __LINE__);
298 return;
299 }
300
301 switch (event->type) {
302 case ICE_RDMA_EVENT_LINK_CHANGE:
303 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__,
304 peer->pf_id, if_getdunit(peer->ifp), event->linkstate,
305 event->baudrate);
306 break;
307 case ICE_RDMA_EVENT_MTU_CHANGE:
308 if (iwdev->vsi.mtu != event->mtu) {
309 l2params.mtu = event->mtu;
310 l2params.mtu_changed = true;
311 irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev);
312 irdma_change_l2params(&iwdev->vsi, &l2params);
313 }
314 break;
315 case ICE_RDMA_EVENT_TC_CHANGE:
316 /*
317 * 1. check if it is pre or post 2. check if it is currently being done
318 */
319 if (event->prep == iwdev->vsi.tc_change_pending) {
320 printf("%s:%d can't process %s TC change if TC change is %spending\n",
321 __func__, __LINE__,
322 event->prep ? "pre" : "post",
323 event->prep ? " " : "not ");
324 goto done;
325 }
326 if (!atomic_inc_not_zero(&iwdev->rf->dev_ctx.event_rfcnt)) {
327 printf("%s:%d (%d) EVENT_TC_CHANGE received, but not processed %d\n",
328 __func__, __LINE__, if_getdunit(peer->ifp),
329 atomic_read(&iwdev->rf->dev_ctx.event_rfcnt));
330 break;
331 }
332 if (event->prep) {
333 iwdev->vsi.tc_change_pending = true;
334 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND);
335 wait_event_timeout(iwdev->suspend_wq,
336 !atomic_read(&iwdev->vsi.qp_suspend_reqs),
337 IRDMA_EVENT_TIMEOUT_MS * 10);
338 irdma_ws_reset(&iwdev->vsi);
339 printf("%s:%d TC change preparation done\n", __func__, __LINE__);
340 } else {
341 l2params.tc_changed = true;
342 irdma_get_qos_info(iwdev->rf, &l2params, &event->port_qos);
343 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
344 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode;
345
346 irdma_check_fc_for_tc_update(&iwdev->vsi, &l2params);
347 irdma_change_l2params(&iwdev->vsi, &l2params);
348 printf("%s:%d TC change done\n", __func__, __LINE__);
349 }
350 atomic_dec(&iwdev->rf->dev_ctx.event_rfcnt);
351 break;
352 case ICE_RDMA_EVENT_CRIT_ERR:
353 if (event->oicr_reg & IRDMAPFINT_OICR_PE_CRITERR_M) {
354 u32 pe_criterr;
355
356 #define IRDMA_Q1_RESOURCE_ERR 0x0001024d
357 pe_criterr = readl(iwdev->rf->sc_dev.hw_regs[IRDMA_GLPE_CRITERR]);
358 if (pe_criterr != IRDMA_Q1_RESOURCE_ERR) {
359 irdma_pr_err("critical PE Error, GLPE_CRITERR=0x%08x\n",
360 pe_criterr);
361 iwdev->rf->reset = true;
362 } else {
363 irdma_dev_warn(to_ibdev(&iwdev->rf->sc_dev),
364 "Q1 Resource Check\n");
365 }
366 }
367 if (event->oicr_reg & IRDMAPFINT_OICR_HMC_ERR_M) {
368 irdma_pr_err("HMC Error\n");
369 iwdev->rf->reset = true;
370 }
371 if (iwdev->rf->reset)
372 iwdev->rf->gen_ops.request_reset(iwdev->rf);
373 break;
374 case ICE_RDMA_EVENT_RESET:
375 iwdev->rf->reset = true;
376 break;
377 default:
378 printf("%s:%d event type unsupported: %d\n", __func__, __LINE__, event->type);
379 }
380 done:
381 return;
382 }
383
384 /**
385 * irdma_link_change - Callback for link state change
386 * @peer: the peer interface structure
387 * @linkstate: state of the link
388 * @baudrate: speed of the link
389 */
390 static void
irdma_link_change(struct ice_rdma_peer * peer,int linkstate,uint64_t baudrate)391 irdma_link_change(struct ice_rdma_peer *peer, int linkstate, uint64_t baudrate)
392 {
393 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__,
394 peer->pf_id, if_getdunit(peer->ifp), linkstate, baudrate);
395 }
396
397 /**
398 * irdma_finalize_task - Finish open or close phase in a separate thread
399 * @context: instance holding peer and iwdev information
400 *
401 * Triggered from irdma_open or irdma_close to perform rt_init_hw or
402 * rt_deinit_hw respectively. Does registration and unregistration of
403 * the device.
404 */
405 static void
irdma_finalize_task(void * context,int pending)406 irdma_finalize_task(void *context, int pending)
407 {
408 struct irdma_task_arg *task_arg = (struct irdma_task_arg *)context;
409 struct irdma_device *iwdev = task_arg->iwdev;
410 struct irdma_pci_f *rf = iwdev->rf;
411 struct ice_rdma_peer *peer = task_arg->peer;
412 struct irdma_l2params l2params = {{{0}}};
413 struct ice_rdma_request req = {0};
414 int status = 0;
415
416 if (iwdev->iw_status) {
417 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT,
418 "Starting deferred closing %d (%d)\n",
419 rf->peer_info->pf_id, if_getdunit(peer->ifp));
420 atomic_dec(&rf->dev_ctx.event_rfcnt);
421 wait_event_timeout(iwdev->suspend_wq,
422 !atomic_read(&rf->dev_ctx.event_rfcnt),
423 IRDMA_MAX_TIMEOUT);
424 if (atomic_read(&rf->dev_ctx.event_rfcnt) != 0) {
425 printf("%s:%d (%d) waiting for event_rfcnt (%d) timeout, proceed with unload\n",
426 __func__, __LINE__, if_getdunit(peer->ifp),
427 atomic_read(&rf->dev_ctx.event_rfcnt));
428 }
429 irdma_dereg_ipaddr_event_cb(rf);
430 irdma_ib_unregister_device(iwdev);
431 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE;
432 req.enable_filter = false;
433 IRDMA_DI_REQ_HANDLER(peer, &req);
434 irdma_cleanup_dead_qps(&iwdev->vsi);
435 irdma_rt_deinit_hw(iwdev);
436 } else {
437 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT,
438 "Starting deferred opening %d (%d)\n",
439 rf->peer_info->pf_id, if_getdunit(peer->ifp));
440 irdma_get_qos_info(iwdev->rf, &l2params, &peer->initial_qos_info);
441 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
442 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode;
443
444 l2params.mtu = peer->mtu;
445 status = irdma_rt_init_hw(iwdev, &l2params);
446 if (status) {
447 irdma_pr_err("RT init failed %d\n", status);
448 ib_dealloc_device(&iwdev->ibdev);
449 return;
450 }
451 status = irdma_ib_register_device(iwdev);
452 if (status) {
453 irdma_pr_err("Registration failed %d\n", status);
454 irdma_rt_deinit_hw(iwdev);
455 ib_dealloc_device(&iwdev->ibdev);
456 }
457 irdma_sw_stats_tunables_init(rf);
458 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE;
459 req.enable_filter = true;
460 IRDMA_DI_REQ_HANDLER(peer, &req);
461 irdma_reg_ipaddr_event_cb(rf);
462 atomic_inc(&rf->dev_ctx.event_rfcnt);
463 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT,
464 "Deferred opening finished %d (%d)\n",
465 rf->peer_info->pf_id, if_getdunit(peer->ifp));
466 }
467 }
468
469 /**
470 * irdma_alloc_pcidev - allocate memory for pcidev and populate data
471 * @peer: the new peer interface structure
472 * @rf: RDMA PCI function
473 */
474 static int
irdma_alloc_pcidev(struct ice_rdma_peer * peer,struct irdma_pci_f * rf)475 irdma_alloc_pcidev(struct ice_rdma_peer *peer, struct irdma_pci_f *rf)
476 {
477 rf->pcidev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
478 if (!rf->pcidev) {
479 return -ENOMEM;
480 }
481 if (linux_pci_attach_device(rf->dev_ctx.dev, NULL, NULL, rf->pcidev))
482 return -ENOMEM;
483
484 return 0;
485 }
486
487 /**
488 * irdma_dealloc_pcidev - deallocate memory for pcidev
489 * @rf: RDMA PCI function
490 */
491 static void
irdma_dealloc_pcidev(struct irdma_pci_f * rf)492 irdma_dealloc_pcidev(struct irdma_pci_f *rf)
493 {
494 linux_pci_detach_device(rf->pcidev);
495 kfree(rf->pcidev);
496 }
497
498 /**
499 * irdma_fill_device_info - assign initial values to rf variables
500 * @iwdev: irdma device
501 * @peer: the peer interface structure
502 */
503 static void
irdma_fill_device_info(struct irdma_device * iwdev,struct ice_rdma_peer * peer)504 irdma_fill_device_info(struct irdma_device *iwdev,
505 struct ice_rdma_peer *peer)
506 {
507 struct irdma_pci_f *rf = iwdev->rf;
508
509 rf->peer_info = peer;
510 rf->gen_ops.register_qset = irdma_register_qset;
511 rf->gen_ops.unregister_qset = irdma_unregister_qset;
512
513 rf->rdma_ver = IRDMA_GEN_2;
514 rf->sc_dev.hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_2;
515 rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT;
516 rf->rst_to = IRDMA_RST_TIMEOUT_HZ;
517 rf->check_fc = irdma_check_fc_for_qp;
518 rf->gen_ops.request_reset = irdma_request_reset;
519 irdma_set_rf_user_cfg_params(rf);
520
521 rf->default_vsi.vsi_idx = peer->pf_vsi_num;
522 rf->dev_ctx.dev = peer->dev;
523 rf->dev_ctx.mem_bus_space_tag = rman_get_bustag(peer->pci_mem);
524 rf->dev_ctx.mem_bus_space_handle = rman_get_bushandle(peer->pci_mem);
525 rf->dev_ctx.mem_bus_space_size = rman_get_size(peer->pci_mem);
526
527 rf->hw.dev_context = &rf->dev_ctx;
528 rf->hw.hw_addr = (u8 *)rman_get_virtual(peer->pci_mem);
529 rf->msix_count = peer->msix.count;
530 rf->msix_info.entry = peer->msix.base;
531 rf->msix_info.vector = peer->msix.count;
532 printf("%s:%d msix_info: %d %d %d\n", __func__, __LINE__,
533 rf->msix_count, rf->msix_info.entry, rf->msix_info.vector);
534
535 rf->iwdev = iwdev;
536 iwdev->netdev = peer->ifp;
537 iwdev->init_state = INITIAL_STATE;
538 iwdev->vsi_num = peer->pf_vsi_num;
539 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
540 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
541 iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT;
542 iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT;
543 iwdev->roce_rtomin = 5;
544
545 if (rf->protocol_used == IRDMA_ROCE_PROTOCOL_ONLY) {
546 iwdev->roce_mode = true;
547 }
548 }
549
550 /**
551 * irdma_probe - Callback to probe a new RDMA peer device
552 * @peer: the new peer interface structure
553 *
554 * Callback implementing the RDMA_PROBE function. Called by the ice driver to
555 * notify the RDMA client driver that a new device has been created
556 */
557 static int
irdma_probe(struct ice_rdma_peer * peer)558 irdma_probe(struct ice_rdma_peer *peer)
559 {
560 struct irdma_device *iwdev;
561 struct irdma_pci_f *rf;
562 struct irdma_handler *hdl;
563 int err = 0;
564
565 irdma_pr_info("probe: irdma-%s peer=%p, peer->pf_id=%d, peer->ifp=%p, peer->ifp->if_dunit=%d, peer->pci_mem->r_bustag=%p\n",
566 irdma_driver_version, peer, peer->pf_id, peer->ifp,
567 if_getdunit(peer->ifp), (void *)(uintptr_t)peer->pci_mem->r_bustag);
568
569 hdl = irdma_find_handler(peer);
570 if (hdl)
571 return -EBUSY;
572
573 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
574 if (!hdl)
575 return -ENOMEM;
576
577 iwdev = (struct irdma_device *)ib_alloc_device(sizeof(*iwdev));
578 if (!iwdev) {
579 kfree(hdl);
580 return -ENOMEM;
581 }
582
583 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL);
584 if (!iwdev->rf) {
585 ib_dealloc_device(&iwdev->ibdev);
586 kfree(hdl);
587 return -ENOMEM;
588 }
589 hdl->iwdev = iwdev;
590 iwdev->hdl = hdl;
591
592 irdma_init_tunable(iwdev->rf, if_getdunit(peer->ifp));
593 irdma_fill_device_info(iwdev, peer);
594 rf = iwdev->rf;
595
596 if (irdma_alloc_pcidev(peer, rf))
597 goto err_pcidev;
598
599 irdma_add_handler(hdl);
600
601 if (irdma_ctrl_init_hw(rf)) {
602 err = -EIO;
603 goto err_ctrl_init;
604 }
605
606 rf->dev_ctx.task_arg.peer = peer;
607 rf->dev_ctx.task_arg.iwdev = iwdev;
608 rf->dev_ctx.task_arg.peer = peer;
609
610 TASK_INIT(&hdl->deferred_task, 0, irdma_finalize_task, &rf->dev_ctx.task_arg);
611 hdl->deferred_tq = taskqueue_create_fast("irdma_defer",
612 M_NOWAIT, taskqueue_thread_enqueue,
613 &hdl->deferred_tq);
614 taskqueue_start_threads(&hdl->deferred_tq, 1, PI_NET, "irdma_defer_t");
615
616 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task);
617
618 return 0;
619
620 err_ctrl_init:
621 irdma_del_handler(hdl);
622 irdma_dealloc_pcidev(rf);
623 err_pcidev:
624 kfree(iwdev->rf);
625 ib_dealloc_device(&iwdev->ibdev);
626 kfree(hdl);
627
628 return err;
629 }
630
631 /**
632 * irdma_remove - Callback to remove an RDMA peer device
633 * @peer: the new peer interface structure
634 *
635 * Callback implementing the RDMA_REMOVE function. Called by the ice driver to
636 * notify the RDMA client driver that the device wille be delated
637 */
638 static int
irdma_remove(struct ice_rdma_peer * peer)639 irdma_remove(struct ice_rdma_peer *peer)
640 {
641 struct irdma_handler *hdl;
642 struct irdma_device *iwdev;
643
644 irdma_debug((struct irdma_sc_dev *)NULL, IRDMA_DEBUG_INIT,
645 "removing %s irdma%d\n", __func__, if_getdunit(peer->ifp));
646
647 hdl = irdma_find_handler(peer);
648 if (!hdl)
649 return 0;
650
651 iwdev = hdl->iwdev;
652
653 if (iwdev->vsi.tc_change_pending) {
654 iwdev->vsi.tc_change_pending = false;
655 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_RESUME);
656 }
657
658 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task);
659
660 taskqueue_drain(hdl->deferred_tq, &hdl->deferred_task);
661 taskqueue_free(hdl->deferred_tq);
662 hdl->iwdev->rf->dev_ctx.task_arg.iwdev = NULL;
663 hdl->iwdev->rf->dev_ctx.task_arg.peer = NULL;
664
665 sysctl_ctx_free(&iwdev->rf->tun_info.irdma_sysctl_ctx);
666 hdl->iwdev->rf->tun_info.irdma_sysctl_tree = NULL;
667 hdl->iwdev->rf->tun_info.sws_sysctl_tree = NULL;
668
669 irdma_ctrl_deinit_hw(iwdev->rf);
670
671 irdma_dealloc_pcidev(iwdev->rf);
672
673 irdma_del_handler(iwdev->hdl);
674 kfree(iwdev->hdl);
675 kfree(iwdev->rf);
676 ib_dealloc_device(&iwdev->ibdev);
677 irdma_pr_info("IRDMA hardware deinitialization complete irdma%d\n",
678 if_getdunit(peer->ifp));
679
680 return 0;
681 }
682
683 /**
684 * irdma_open - Callback for operation open for RDMA device
685 * @peer: the new peer interface structure
686 *
687 * Callback implementing the RDMA_OPEN function. Called by the ice driver to
688 * notify the RDMA client driver that a new device has been initialized.
689 */
690 static int
irdma_open(struct ice_rdma_peer * peer)691 irdma_open(struct ice_rdma_peer *peer)
692 {
693 struct irdma_device *iwdev;
694 struct ice_rdma_event event = {0};
695
696 iwdev = peer_to_iwdev(peer);
697 if (iwdev) {
698 event.type = ICE_RDMA_EVENT_MTU_CHANGE;
699 event.mtu = peer->mtu;
700
701 irdma_event_handler(peer, &event);
702 } else {
703 irdma_probe(peer);
704 }
705
706 return 0;
707 }
708
709 /**
710 * irdma_close - Callback to notify that a peer device is down
711 * @peer: the RDMA peer device being stopped
712 *
713 * Callback implementing the RDMA_CLOSE function. Called by the ice driver to
714 * notify the RDMA client driver that a peer device is being stopped.
715 */
716 static int
irdma_close(struct ice_rdma_peer * peer)717 irdma_close(struct ice_rdma_peer *peer)
718 {
719 /*
720 * This is called when ifconfig down or pf-reset is about to happen.
721 */
722 struct irdma_device *iwdev;
723
724 iwdev = peer_to_iwdev(peer);
725 if (iwdev && iwdev->rf->reset)
726 irdma_remove(peer);
727
728 return 0;
729 }
730
731 /**
732 * irdma_prep_for_unregister - ensure the driver is ready to unregister
733 */
734 static void
irdma_prep_for_unregister(void)735 irdma_prep_for_unregister(void)
736 {
737 struct irdma_handler *hdl;
738 unsigned long flags;
739 bool hdl_valid;
740
741 do {
742 hdl_valid = false;
743 spin_lock_irqsave(&irdma_handler_lock, flags);
744 list_for_each_entry(hdl, &irdma_handlers, list) {
745 if (!hdl->iwdev->rf->peer_info)
746 continue;
747 hdl_valid = true;
748 break;
749 }
750 spin_unlock_irqrestore(&irdma_handler_lock, flags);
751 if (!hdl || !hdl_valid)
752 break;
753 IRDMA_CLOSE(hdl->iwdev->rf->peer_info);
754 IRDMA_REMOVE(hdl->iwdev->rf->peer_info);
755 } while (1);
756 }
757
758 static kobj_method_t irdma_methods[] = {
759 KOBJMETHOD(irdma_probe, irdma_probe),
760 KOBJMETHOD(irdma_open, irdma_open),
761 KOBJMETHOD(irdma_close, irdma_close),
762 KOBJMETHOD(irdma_remove, irdma_remove),
763 KOBJMETHOD(irdma_link_change, irdma_link_change),
764 KOBJMETHOD(irdma_event_handler, irdma_event_handler),
765 KOBJMETHOD_END
766 };
767
768 /* declare irdma_class which extends the ice_rdma_di class */
769 DEFINE_CLASS_1(irdma, irdma_class, irdma_methods, sizeof(struct ice_rdma_peer), ice_rdma_di_class);
770
771 static struct ice_rdma_info irdma_info = {
772 .major_version = ICE_RDMA_MAJOR_VERSION,
773 .minor_version = ICE_RDMA_MINOR_VERSION,
774 .patch_version = ICE_RDMA_PATCH_VERSION,
775 .rdma_class = &irdma_class,
776 };
777
778 /**
779 * irdma_module_event_handler - Module event handler callback
780 * @mod: unused mod argument
781 * @what: the module event to handle
782 * @arg: unused module event argument
783 *
784 * Callback used by the FreeBSD module stack to notify the driver of module
785 * events. Used to implement custom handling for certain module events such as
786 * load and unload.
787 */
788 static int
irdma_module_event_handler(module_t __unused mod,int what,void __unused * arg)789 irdma_module_event_handler(module_t __unused mod, int what, void __unused * arg)
790 {
791 switch (what) {
792 case MOD_LOAD:
793 printf("Loading irdma module\n");
794 return ice_rdma_register(&irdma_info);
795 case MOD_UNLOAD:
796 printf("Unloading irdma module\n");
797 irdma_prep_for_unregister();
798 ice_rdma_unregister();
799 return (0);
800 default:
801 return (EOPNOTSUPP);
802 }
803
804 return (0);
805 }
806
807 static moduledata_t irdma_moduledata = {
808 "irdma",
809 irdma_module_event_handler,
810 NULL
811 };
812
813 DECLARE_MODULE(irdma, irdma_moduledata, SI_SUB_LAST, SI_ORDER_ANY);
814 MODULE_VERSION(irdma, 1);
815 MODULE_DEPEND(irdma, ice, 1, 1, 1);
816 MODULE_DEPEND(irdma, ibcore, 1, 1, 1);
817