blob: 2217bc0a6bbe366608a52dc63592c83770480438 [file] [log] [blame]
Upinder Malhie3cf00d2013-09-10 03:38:16 +00001/*
2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
3 *
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
16 *
17 */
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/slab.h>
21#include <linux/errno.h>
22
23#include <rdma/ib_user_verbs.h>
24#include <rdma/ib_addr.h>
25
26#include "usnic_abi.h"
27#include "usnic_ib.h"
28#include "usnic_common_util.h"
29#include "usnic_ib_qp_grp.h"
30#include "usnic_fwd.h"
31#include "usnic_log.h"
32#include "usnic_uiom.h"
33#include "usnic_transport.h"
34
35#define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM
36
37static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver)
38{
39 *fw_ver = (u64) *fw_ver_str;
40}
41
42static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp,
43 struct ib_udata *udata)
44{
45 struct usnic_ib_dev *us_ibdev;
46 struct usnic_ib_create_qp_resp resp;
47 struct pci_dev *pdev;
48 struct vnic_dev_bar *bar;
49 struct usnic_vnic_res_chunk *chunk;
Upinder Malhi8af94ac2014-01-09 14:48:08 -080050 struct usnic_ib_qp_grp_flow *default_flow;
Upinder Malhie3cf00d2013-09-10 03:38:16 +000051 int i, err;
52
53 memset(&resp, 0, sizeof(resp));
54
55 us_ibdev = qp_grp->vf->pf;
56 pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic);
57 if (!pdev) {
58 usnic_err("Failed to get pdev of qp_grp %d\n",
59 qp_grp->grp_id);
60 return -EFAULT;
61 }
62
63 bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0);
64 if (!bar) {
65 usnic_err("Failed to get bar0 of qp_grp %d vf %s",
66 qp_grp->grp_id, pci_name(pdev));
67 return -EFAULT;
68 }
69
70 resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic);
71 resp.bar_bus_addr = bar->bus_addr;
72 resp.bar_len = bar->len;
Upinder Malhie3cf00d2013-09-10 03:38:16 +000073
74 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ);
75 if (IS_ERR_OR_NULL(chunk)) {
76 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
77 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ),
78 qp_grp->grp_id,
79 PTR_ERR(chunk));
80 return chunk ? PTR_ERR(chunk) : -ENOMEM;
81 }
82
83 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ);
84 resp.rq_cnt = chunk->cnt;
85 for (i = 0; i < chunk->cnt; i++)
86 resp.rq_idx[i] = chunk->res[i]->vnic_idx;
87
88 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ);
89 if (IS_ERR_OR_NULL(chunk)) {
90 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
91 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ),
92 qp_grp->grp_id,
93 PTR_ERR(chunk));
94 return chunk ? PTR_ERR(chunk) : -ENOMEM;
95 }
96
97 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ);
98 resp.wq_cnt = chunk->cnt;
99 for (i = 0; i < chunk->cnt; i++)
100 resp.wq_idx[i] = chunk->res[i]->vnic_idx;
101
102 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ);
103 if (IS_ERR_OR_NULL(chunk)) {
104 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
105 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ),
106 qp_grp->grp_id,
107 PTR_ERR(chunk));
108 return chunk ? PTR_ERR(chunk) : -ENOMEM;
109 }
110
111 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ);
112 resp.cq_cnt = chunk->cnt;
113 for (i = 0; i < chunk->cnt; i++)
114 resp.cq_idx[i] = chunk->res[i]->vnic_idx;
115
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800116 default_flow = list_first_entry(&qp_grp->flows_lst,
117 struct usnic_ib_qp_grp_flow, link);
118 resp.transport = default_flow->trans_type;
119
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000120 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
121 if (err) {
122 usnic_err("Failed to copy udata for %s", us_ibdev->ib_dev.name);
123 return err;
124 }
125
126 return 0;
127}
128
129static struct usnic_ib_qp_grp*
130find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev,
131 struct usnic_ib_pd *pd,
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800132 struct usnic_transport_spec *trans_spec,
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000133 struct usnic_vnic_res_spec *res_spec)
134{
135 struct usnic_ib_vf *vf;
136 struct usnic_vnic *vnic;
137 struct usnic_ib_qp_grp *qp_grp;
138 struct device *dev, **dev_list;
139 int i, found = 0;
140
141 BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
142
143 if (list_empty(&us_ibdev->vf_dev_list)) {
144 usnic_info("No vfs to allocate\n");
145 return NULL;
146 }
147
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000148 if (usnic_ib_share_vf) {
149 /* Try to find resouces on a used vf which is in pd */
150 dev_list = usnic_uiom_get_dev_list(pd->umem_pd);
151 for (i = 0; dev_list[i]; i++) {
152 dev = dev_list[i];
153 vf = pci_get_drvdata(to_pci_dev(dev));
154 spin_lock(&vf->lock);
155 vnic = vf->vnic;
156 if (!usnic_vnic_check_room(vnic, res_spec)) {
157 usnic_dbg("Found used vnic %s from %s\n",
158 us_ibdev->ib_dev.name,
159 pci_name(usnic_vnic_get_pdev(
160 vnic)));
161 found = 1;
162 break;
163 }
164 spin_unlock(&vf->lock);
165
166 }
167 usnic_uiom_free_dev_list(dev_list);
168 }
169
170 if (!found) {
171 /* Try to find resources on an unused vf */
172 list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) {
173 spin_lock(&vf->lock);
174 vnic = vf->vnic;
175 if (vf->qp_grp_ref_cnt == 0 &&
176 usnic_vnic_check_room(vnic, res_spec) == 0) {
177 found = 1;
178 break;
179 }
180 spin_unlock(&vf->lock);
181 }
182 }
183
184 if (!found) {
185 usnic_info("No free qp grp found on %s\n",
186 us_ibdev->ib_dev.name);
187 return ERR_PTR(-ENOMEM);
188 }
189
190 qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, pd, res_spec,
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800191 trans_spec);
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000192 spin_unlock(&vf->lock);
193 if (IS_ERR_OR_NULL(qp_grp)) {
194 usnic_err("Failed to allocate qp_grp\n");
195 return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM);
196 }
197
198 return qp_grp;
199}
200
201static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp)
202{
203 struct usnic_ib_vf *vf = qp_grp->vf;
204
205 WARN_ON(qp_grp->state != IB_QPS_RESET);
206
207 spin_lock(&vf->lock);
208 usnic_ib_qp_grp_destroy(qp_grp);
209 spin_unlock(&vf->lock);
210}
211
212static void eth_speed_to_ib_speed(int speed, u8 *active_speed,
213 u8 *active_width)
214{
215 if (speed <= 10000) {
216 *active_width = IB_WIDTH_1X;
217 *active_speed = IB_SPEED_FDR10;
218 } else if (speed <= 20000) {
219 *active_width = IB_WIDTH_4X;
220 *active_speed = IB_SPEED_DDR;
221 } else if (speed <= 30000) {
222 *active_width = IB_WIDTH_4X;
223 *active_speed = IB_SPEED_QDR;
224 } else if (speed <= 40000) {
225 *active_width = IB_WIDTH_4X;
226 *active_speed = IB_SPEED_FDR10;
227 } else {
228 *active_width = IB_WIDTH_4X;
229 *active_speed = IB_SPEED_EDR;
230 }
231}
232
233/* Start of ib callback functions */
234
235enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device,
236 u8 port_num)
237{
238 return IB_LINK_LAYER_ETHERNET;
239}
240
241int usnic_ib_query_device(struct ib_device *ibdev,
242 struct ib_device_attr *props)
243{
244 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
245 union ib_gid gid;
246 struct ethtool_drvinfo info;
247 struct ethtool_cmd cmd;
248 int qp_per_vf;
249
250 usnic_dbg("\n");
251 mutex_lock(&us_ibdev->usdev_lock);
252 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
253 us_ibdev->netdev->ethtool_ops->get_settings(us_ibdev->netdev, &cmd);
254 memset(props, 0, sizeof(*props));
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800255 usnic_mac_to_gid(us_ibdev->ufdev->mac, &gid.raw[0]);
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000256 memcpy(&props->sys_image_guid, &gid.global.interface_id,
257 sizeof(gid.global.interface_id));
258 usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver);
259 props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE;
260 props->page_size_cap = USNIC_UIOM_PAGE_SIZE;
261 props->vendor_id = PCI_VENDOR_ID_CISCO;
262 props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC;
263 props->hw_ver = us_ibdev->pdev->subsystem_device;
264 qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
265 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
266 props->max_qp = qp_per_vf *
267 atomic_read(&us_ibdev->vf_cnt.refcount);
268 props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
269 IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
270 props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] *
271 atomic_read(&us_ibdev->vf_cnt.refcount);
272 props->max_pd = USNIC_UIOM_MAX_PD_CNT;
273 props->max_mr = USNIC_UIOM_MAX_MR_CNT;
274 props->local_ca_ack_delay = 0;
275 props->max_pkeys = 0;
276 props->atomic_cap = IB_ATOMIC_NONE;
277 props->masked_atomic_cap = props->atomic_cap;
278 props->max_qp_rd_atom = 0;
279 props->max_qp_init_rd_atom = 0;
280 props->max_res_rd_atom = 0;
281 props->max_srq = 0;
282 props->max_srq_wr = 0;
283 props->max_srq_sge = 0;
284 props->max_fast_reg_page_list_len = 0;
285 props->max_mcast_grp = 0;
286 props->max_mcast_qp_attach = 0;
287 props->max_total_mcast_qp_attach = 0;
288 props->max_map_per_fmr = 0;
289 /* Owned by Userspace
290 * max_qp_wr, max_sge, max_sge_rd, max_cqe */
291 mutex_unlock(&us_ibdev->usdev_lock);
292
293 return 0;
294}
295
296int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
297 struct ib_port_attr *props)
298{
299 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
300 struct ethtool_cmd cmd;
301
302 usnic_dbg("\n");
303
304 mutex_lock(&us_ibdev->usdev_lock);
305 us_ibdev->netdev->ethtool_ops->get_settings(us_ibdev->netdev, &cmd);
306 memset(props, 0, sizeof(*props));
307
308 props->lid = 0;
309 props->lmc = 1;
310 props->sm_lid = 0;
311 props->sm_sl = 0;
312
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800313 if (us_ibdev->ufdev->link_up) {
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000314 props->state = IB_PORT_ACTIVE;
315 props->phys_state = 5;
316 } else {
317 props->state = IB_PORT_DOWN;
318 props->phys_state = 3;
319 }
320
321 props->port_cap_flags = 0;
322 props->gid_tbl_len = 1;
323 props->pkey_tbl_len = 1;
324 props->bad_pkey_cntr = 0;
325 props->qkey_viol_cntr = 0;
326 eth_speed_to_ib_speed(cmd.speed, &props->active_speed,
327 &props->active_width);
328 props->max_mtu = IB_MTU_4096;
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800329 props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu);
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000330 /* Userspace will adjust for hdrs */
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800331 props->max_msg_sz = us_ibdev->ufdev->mtu;
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000332 props->max_vl_num = 1;
333 mutex_unlock(&us_ibdev->usdev_lock);
334
335 return 0;
336}
337
338int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
339 int qp_attr_mask,
340 struct ib_qp_init_attr *qp_init_attr)
341{
342 struct usnic_ib_qp_grp *qp_grp;
343 struct usnic_ib_vf *vf;
344 int err;
345
346 usnic_dbg("\n");
347
348 memset(qp_attr, 0, sizeof(*qp_attr));
349 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
350
351 qp_grp = to_uqp_grp(qp);
352 vf = qp_grp->vf;
353 mutex_lock(&vf->pf->usdev_lock);
354 usnic_dbg("\n");
355 qp_attr->qp_state = qp_grp->state;
356 qp_attr->cur_qp_state = qp_grp->state;
357
358 switch (qp_grp->ibqp.qp_type) {
359 case IB_QPT_UD:
360 qp_attr->qkey = 0;
361 break;
362 default:
363 usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type);
364 err = -EINVAL;
365 goto err_out;
366 }
367
368 mutex_unlock(&vf->pf->usdev_lock);
369 return 0;
370
371err_out:
372 mutex_unlock(&vf->pf->usdev_lock);
373 return err;
374}
375
376int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
377 union ib_gid *gid)
378{
379
380 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
381 usnic_dbg("\n");
382
383 if (index > 1)
384 return -EINVAL;
385
386 mutex_lock(&us_ibdev->usdev_lock);
387 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800388 usnic_mac_to_gid(us_ibdev->ufdev->mac, &gid->raw[0]);
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000389 mutex_unlock(&us_ibdev->usdev_lock);
390
391 return 0;
392}
393
394int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
395 u16 *pkey)
396{
397 if (index > 1)
398 return -EINVAL;
399
400 *pkey = 0xffff;
401 return 0;
402}
403
404struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev,
405 struct ib_ucontext *context,
406 struct ib_udata *udata)
407{
408 struct usnic_ib_pd *pd;
409 void *umem_pd;
410
411 usnic_dbg("\n");
412
413 pd = kzalloc(sizeof(*pd), GFP_KERNEL);
414 if (!pd)
415 return ERR_PTR(-ENOMEM);
416
417 umem_pd = pd->umem_pd = usnic_uiom_alloc_pd();
418 if (IS_ERR_OR_NULL(umem_pd)) {
419 kfree(pd);
420 return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM);
421 }
422
423 usnic_info("domain 0x%p allocated for context 0x%p and device %s\n",
424 pd, context, ibdev->name);
425 return &pd->ibpd;
426}
427
428int usnic_ib_dealloc_pd(struct ib_pd *pd)
429{
430 usnic_info("freeing domain 0x%p\n", pd);
431
432 usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd);
433 kfree(pd);
434 return 0;
435}
436
437struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
438 struct ib_qp_init_attr *init_attr,
439 struct ib_udata *udata)
440{
441 int err;
442 struct usnic_ib_dev *us_ibdev;
443 struct usnic_ib_qp_grp *qp_grp;
444 struct usnic_ib_ucontext *ucontext;
445 int cq_cnt;
446 struct usnic_vnic_res_spec res_spec;
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800447 struct usnic_transport_spec trans_spec;
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000448
449 usnic_dbg("\n");
450
451 ucontext = to_uucontext(pd->uobject->context);
452 us_ibdev = to_usdev(pd->device);
453
454 if (init_attr->qp_type != IB_QPT_UD) {
455 usnic_err("%s asked to make a non-UD QP: %d\n",
456 us_ibdev->ib_dev.name, init_attr->qp_type);
457 return ERR_PTR(-EINVAL);
458 }
459
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800460 memset(&trans_spec, 0, sizeof(trans_spec));
461 trans_spec.trans_type = USNIC_TRANSPORT_ROCE_CUSTOM;
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000462 mutex_lock(&us_ibdev->usdev_lock);
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800463 cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2;
464 res_spec = min_transport_spec[trans_spec.trans_type];
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000465 usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt);
466 qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd),
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800467 &trans_spec,
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000468 &res_spec);
469 if (IS_ERR_OR_NULL(qp_grp)) {
470 err = (qp_grp ? PTR_ERR(qp_grp) : -ENOMEM);
471 goto out_release_mutex;
472 }
473
474 err = usnic_ib_fill_create_qp_resp(qp_grp, udata);
475 if (err) {
476 err = -EBUSY;
477 goto out_release_qp_grp;
478 }
479
480 qp_grp->ctx = ucontext;
481 list_add_tail(&qp_grp->link, &ucontext->qp_grp_list);
482 usnic_ib_log_vf(qp_grp->vf);
483 mutex_unlock(&us_ibdev->usdev_lock);
484 return &qp_grp->ibqp;
485
486out_release_qp_grp:
487 qp_grp_destroy(qp_grp);
488out_release_mutex:
489 mutex_unlock(&us_ibdev->usdev_lock);
490 return ERR_PTR(err);
491}
492
493int usnic_ib_destroy_qp(struct ib_qp *qp)
494{
495 struct usnic_ib_qp_grp *qp_grp;
496 struct usnic_ib_vf *vf;
497
498 usnic_dbg("\n");
499
500 qp_grp = to_uqp_grp(qp);
501 vf = qp_grp->vf;
502 mutex_lock(&vf->pf->usdev_lock);
503 if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) {
504 usnic_err("Failed to move qp grp %u to reset\n",
505 qp_grp->grp_id);
506 }
507
508 list_del(&qp_grp->link);
509 qp_grp_destroy(qp_grp);
510 mutex_unlock(&vf->pf->usdev_lock);
511
512 return 0;
513}
514
515int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
516 int attr_mask, struct ib_udata *udata)
517{
518 struct usnic_ib_qp_grp *qp_grp;
519 int status;
520 usnic_dbg("\n");
521
522 qp_grp = to_uqp_grp(ibqp);
523
524 /* TODO: Future Support All States */
525 mutex_lock(&qp_grp->vf->pf->usdev_lock);
526 if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_INIT) {
Upinder Malhi8af94ac2014-01-09 14:48:08 -0800527 status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_INIT, NULL);
Upinder Malhie3cf00d2013-09-10 03:38:16 +0000528 } else if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_RTR) {
529 status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RTR, NULL);
530 } else if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_RTS) {
531 status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RTS, NULL);
532 } else {
533 usnic_err("Unexpected combination mask: %u state: %u\n",
534 attr_mask & IB_QP_STATE, attr->qp_state);
535 status = -EINVAL;
536 }
537
538 mutex_unlock(&qp_grp->vf->pf->usdev_lock);
539 return status;
540}
541
542struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, int entries,
543 int vector, struct ib_ucontext *context,
544 struct ib_udata *udata)
545{
546 struct ib_cq *cq;
547
548 usnic_dbg("\n");
549 cq = kzalloc(sizeof(*cq), GFP_KERNEL);
550 if (!cq)
551 return ERR_PTR(-EBUSY);
552
553 return cq;
554}
555
556int usnic_ib_destroy_cq(struct ib_cq *cq)
557{
558 usnic_dbg("\n");
559 kfree(cq);
560 return 0;
561}
562
563struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length,
564 u64 virt_addr, int access_flags,
565 struct ib_udata *udata)
566{
567 struct usnic_ib_mr *mr;
568 int err;
569
570 usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start,
571 virt_addr, length);
572
573 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
574 if (IS_ERR_OR_NULL(mr))
575 return ERR_PTR(mr ? PTR_ERR(mr) : -ENOMEM);
576
577 mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length,
578 access_flags, 0);
579 if (IS_ERR_OR_NULL(mr->umem)) {
580 err = (mr->umem) ? PTR_ERR(mr->umem) : -EFAULT;
581 goto err_free;
582 }
583
584 mr->ibmr.lkey = mr->ibmr.rkey = 0;
585 return &mr->ibmr;
586
587err_free:
588 kfree(mr);
589 return ERR_PTR(err);
590}
591
592int usnic_ib_dereg_mr(struct ib_mr *ibmr)
593{
594 struct usnic_ib_mr *mr = to_umr(ibmr);
595
596 usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length);
597
598 usnic_uiom_reg_release(mr->umem, ibmr->pd->uobject->context->closing);
599 kfree(mr);
600 return 0;
601}
602
603struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev,
604 struct ib_udata *udata)
605{
606 struct usnic_ib_ucontext *context;
607 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
608 usnic_dbg("\n");
609
610 context = kmalloc(sizeof(*context), GFP_KERNEL);
611 if (!context)
612 return ERR_PTR(-ENOMEM);
613
614 INIT_LIST_HEAD(&context->qp_grp_list);
615 mutex_lock(&us_ibdev->usdev_lock);
616 list_add_tail(&context->link, &us_ibdev->ctx_list);
617 mutex_unlock(&us_ibdev->usdev_lock);
618
619 return &context->ibucontext;
620}
621
622int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
623{
624 struct usnic_ib_ucontext *context = to_uucontext(ibcontext);
625 struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device);
626 usnic_dbg("\n");
627
628 mutex_lock(&us_ibdev->usdev_lock);
629 BUG_ON(!list_empty(&context->qp_grp_list));
630 list_del(&context->link);
631 mutex_unlock(&us_ibdev->usdev_lock);
632 kfree(context);
633 return 0;
634}
635
636int usnic_ib_mmap(struct ib_ucontext *context,
637 struct vm_area_struct *vma)
638{
639 struct usnic_ib_ucontext *uctx = to_ucontext(context);
640 struct usnic_ib_dev *us_ibdev;
641 struct usnic_ib_qp_grp *qp_grp;
642 struct usnic_ib_vf *vf;
643 struct vnic_dev_bar *bar;
644 dma_addr_t bus_addr;
645 unsigned int len;
646 unsigned int vfid;
647
648 usnic_dbg("\n");
649
650 us_ibdev = to_usdev(context->device);
651 vma->vm_flags |= VM_IO;
652 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
653 vfid = vma->vm_pgoff;
654 usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n",
655 vma->vm_pgoff, PAGE_SHIFT, vfid);
656
657 mutex_lock(&us_ibdev->usdev_lock);
658 list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) {
659 vf = qp_grp->vf;
660 if (usnic_vnic_get_index(vf->vnic) == vfid) {
661 bar = usnic_vnic_get_bar(vf->vnic, 0);
662 if ((vma->vm_end - vma->vm_start) != bar->len) {
663 usnic_err("Bar0 Len %lu - Request map %lu\n",
664 bar->len,
665 vma->vm_end - vma->vm_start);
666 mutex_unlock(&us_ibdev->usdev_lock);
667 return -EINVAL;
668 }
669 bus_addr = bar->bus_addr;
670 len = bar->len;
671 usnic_dbg("bus: %pa vaddr: %p size: %ld\n",
672 &bus_addr, bar->vaddr, bar->len);
673 mutex_unlock(&us_ibdev->usdev_lock);
674
675 return remap_pfn_range(vma,
676 vma->vm_start,
677 bus_addr >> PAGE_SHIFT,
678 len, vma->vm_page_prot);
679 }
680 }
681
682 mutex_unlock(&us_ibdev->usdev_lock);
683 usnic_err("No VF %u found\n", vfid);
684 return -EINVAL;
685}
686
687/* In ib callbacks section - Start of stub funcs */
688struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd,
689 struct ib_ah_attr *ah_attr)
690{
691 usnic_dbg("\n");
692 return ERR_PTR(-EPERM);
693}
694
695int usnic_ib_destroy_ah(struct ib_ah *ah)
696{
697 usnic_dbg("\n");
698 return -EINVAL;
699}
700
701int usnic_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
702 struct ib_send_wr **bad_wr)
703{
704 usnic_dbg("\n");
705 return -EINVAL;
706}
707
708int usnic_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
709 struct ib_recv_wr **bad_wr)
710{
711 usnic_dbg("\n");
712 return -EINVAL;
713}
714
715int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries,
716 struct ib_wc *wc)
717{
718 usnic_dbg("\n");
719 return -EINVAL;
720}
721
722int usnic_ib_req_notify_cq(struct ib_cq *cq,
723 enum ib_cq_notify_flags flags)
724{
725 usnic_dbg("\n");
726 return -EINVAL;
727}
728
729struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc)
730{
731 usnic_dbg("\n");
732 return ERR_PTR(-ENOMEM);
733}
734
735
736/* In ib callbacks section - End of stub funcs */
737/* End of ib callbacks section */