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e3cf00d0 UM |
1 | /* |
2 | * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. | |
3 | * | |
3805eade JS |
4 | * This software is available to you under a choice of one of two |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
e3cf00d0 UM |
22 | * |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | * | |
32 | */ | |
33 | #include <linux/module.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/errno.h> | |
37 | ||
38 | #include <rdma/ib_user_verbs.h> | |
39 | #include <rdma/ib_addr.h> | |
89944450 | 40 | #include <rdma/uverbs_ioctl.h> |
e3cf00d0 UM |
41 | |
42 | #include "usnic_abi.h" | |
43 | #include "usnic_ib.h" | |
44 | #include "usnic_common_util.h" | |
45 | #include "usnic_ib_qp_grp.h" | |
19188436 | 46 | #include "usnic_ib_verbs.h" |
e3cf00d0 UM |
47 | #include "usnic_fwd.h" |
48 | #include "usnic_log.h" | |
49 | #include "usnic_uiom.h" | |
50 | #include "usnic_transport.h" | |
51 | ||
52 | #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM | |
53 | ||
bd8c2021 BVA |
54 | const struct usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = { |
55 | { /*USNIC_TRANSPORT_UNKNOWN*/ | |
56 | .resources = { | |
57 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
58 | }, | |
59 | }, | |
60 | { /*USNIC_TRANSPORT_ROCE_CUSTOM*/ | |
61 | .resources = { | |
62 | {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, | |
63 | {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, | |
64 | {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, | |
65 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
66 | }, | |
67 | }, | |
68 | { /*USNIC_TRANSPORT_IPV4_UDP*/ | |
69 | .resources = { | |
70 | {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, | |
71 | {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, | |
72 | {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, | |
73 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
74 | }, | |
75 | }, | |
76 | }; | |
77 | ||
e3cf00d0 UM |
78 | static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver) |
79 | { | |
3ea72861 | 80 | *fw_ver = *((u64 *)fw_ver_str); |
e3cf00d0 UM |
81 | } |
82 | ||
83 | static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp, | |
84 | struct ib_udata *udata) | |
85 | { | |
86 | struct usnic_ib_dev *us_ibdev; | |
87 | struct usnic_ib_create_qp_resp resp; | |
88 | struct pci_dev *pdev; | |
89 | struct vnic_dev_bar *bar; | |
90 | struct usnic_vnic_res_chunk *chunk; | |
8af94ac6 | 91 | struct usnic_ib_qp_grp_flow *default_flow; |
e3cf00d0 UM |
92 | int i, err; |
93 | ||
94 | memset(&resp, 0, sizeof(resp)); | |
95 | ||
96 | us_ibdev = qp_grp->vf->pf; | |
97 | pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); | |
98 | if (!pdev) { | |
99 | usnic_err("Failed to get pdev of qp_grp %d\n", | |
100 | qp_grp->grp_id); | |
101 | return -EFAULT; | |
102 | } | |
103 | ||
104 | bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0); | |
105 | if (!bar) { | |
106 | usnic_err("Failed to get bar0 of qp_grp %d vf %s", | |
107 | qp_grp->grp_id, pci_name(pdev)); | |
108 | return -EFAULT; | |
109 | } | |
110 | ||
111 | resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic); | |
112 | resp.bar_bus_addr = bar->bus_addr; | |
113 | resp.bar_len = bar->len; | |
e3cf00d0 UM |
114 | |
115 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
5f4c7e4e | 116 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
117 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
118 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), | |
119 | qp_grp->grp_id, | |
120 | PTR_ERR(chunk)); | |
5f4c7e4e | 121 | return PTR_ERR(chunk); |
e3cf00d0 UM |
122 | } |
123 | ||
124 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ); | |
125 | resp.rq_cnt = chunk->cnt; | |
126 | for (i = 0; i < chunk->cnt; i++) | |
127 | resp.rq_idx[i] = chunk->res[i]->vnic_idx; | |
128 | ||
129 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ); | |
5f4c7e4e | 130 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
131 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
132 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ), | |
133 | qp_grp->grp_id, | |
134 | PTR_ERR(chunk)); | |
5f4c7e4e | 135 | return PTR_ERR(chunk); |
e3cf00d0 UM |
136 | } |
137 | ||
138 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ); | |
139 | resp.wq_cnt = chunk->cnt; | |
140 | for (i = 0; i < chunk->cnt; i++) | |
141 | resp.wq_idx[i] = chunk->res[i]->vnic_idx; | |
142 | ||
143 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ); | |
5f4c7e4e | 144 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
145 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
146 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ), | |
147 | qp_grp->grp_id, | |
148 | PTR_ERR(chunk)); | |
5f4c7e4e | 149 | return PTR_ERR(chunk); |
e3cf00d0 UM |
150 | } |
151 | ||
152 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ); | |
153 | resp.cq_cnt = chunk->cnt; | |
154 | for (i = 0; i < chunk->cnt; i++) | |
155 | resp.cq_idx[i] = chunk->res[i]->vnic_idx; | |
156 | ||
8af94ac6 UM |
157 | default_flow = list_first_entry(&qp_grp->flows_lst, |
158 | struct usnic_ib_qp_grp_flow, link); | |
159 | resp.transport = default_flow->trans_type; | |
160 | ||
e3cf00d0 UM |
161 | err = ib_copy_to_udata(udata, &resp, sizeof(resp)); |
162 | if (err) { | |
9de69861 JG |
163 | usnic_err("Failed to copy udata for %s", |
164 | dev_name(&us_ibdev->ib_dev.dev)); | |
e3cf00d0 UM |
165 | return err; |
166 | } | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | static struct usnic_ib_qp_grp* | |
172 | find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev, | |
173 | struct usnic_ib_pd *pd, | |
8af94ac6 | 174 | struct usnic_transport_spec *trans_spec, |
e3cf00d0 UM |
175 | struct usnic_vnic_res_spec *res_spec) |
176 | { | |
177 | struct usnic_ib_vf *vf; | |
178 | struct usnic_vnic *vnic; | |
179 | struct usnic_ib_qp_grp *qp_grp; | |
180 | struct device *dev, **dev_list; | |
313e16d5 | 181 | int i; |
e3cf00d0 UM |
182 | |
183 | BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); | |
184 | ||
185 | if (list_empty(&us_ibdev->vf_dev_list)) { | |
186 | usnic_info("No vfs to allocate\n"); | |
187 | return NULL; | |
188 | } | |
189 | ||
e3cf00d0 UM |
190 | if (usnic_ib_share_vf) { |
191 | /* Try to find resouces on a used vf which is in pd */ | |
192 | dev_list = usnic_uiom_get_dev_list(pd->umem_pd); | |
d518a44d DC |
193 | if (IS_ERR(dev_list)) |
194 | return ERR_CAST(dev_list); | |
e3cf00d0 UM |
195 | for (i = 0; dev_list[i]; i++) { |
196 | dev = dev_list[i]; | |
197 | vf = pci_get_drvdata(to_pci_dev(dev)); | |
198 | spin_lock(&vf->lock); | |
199 | vnic = vf->vnic; | |
200 | if (!usnic_vnic_check_room(vnic, res_spec)) { | |
201 | usnic_dbg("Found used vnic %s from %s\n", | |
9de69861 | 202 | dev_name(&us_ibdev->ib_dev.dev), |
e3cf00d0 UM |
203 | pci_name(usnic_vnic_get_pdev( |
204 | vnic))); | |
313e16d5 LR |
205 | qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, |
206 | vf, pd, | |
207 | res_spec, | |
208 | trans_spec); | |
209 | ||
210 | spin_unlock(&vf->lock); | |
211 | goto qp_grp_check; | |
e3cf00d0 UM |
212 | } |
213 | spin_unlock(&vf->lock); | |
214 | ||
215 | } | |
216 | usnic_uiom_free_dev_list(dev_list); | |
217 | } | |
218 | ||
313e16d5 LR |
219 | /* Try to find resources on an unused vf */ |
220 | list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) { | |
221 | spin_lock(&vf->lock); | |
222 | vnic = vf->vnic; | |
223 | if (vf->qp_grp_ref_cnt == 0 && | |
224 | usnic_vnic_check_room(vnic, res_spec) == 0) { | |
225 | qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, | |
226 | pd, res_spec, | |
227 | trans_spec); | |
228 | ||
e3cf00d0 | 229 | spin_unlock(&vf->lock); |
313e16d5 | 230 | goto qp_grp_check; |
e3cf00d0 | 231 | } |
313e16d5 | 232 | spin_unlock(&vf->lock); |
e3cf00d0 UM |
233 | } |
234 | ||
9de69861 JG |
235 | usnic_info("No free qp grp found on %s\n", |
236 | dev_name(&us_ibdev->ib_dev.dev)); | |
313e16d5 | 237 | return ERR_PTR(-ENOMEM); |
e3cf00d0 | 238 | |
313e16d5 | 239 | qp_grp_check: |
e3cf00d0 UM |
240 | if (IS_ERR_OR_NULL(qp_grp)) { |
241 | usnic_err("Failed to allocate qp_grp\n"); | |
242 | return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM); | |
243 | } | |
e3cf00d0 UM |
244 | return qp_grp; |
245 | } | |
246 | ||
247 | static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) | |
248 | { | |
249 | struct usnic_ib_vf *vf = qp_grp->vf; | |
250 | ||
251 | WARN_ON(qp_grp->state != IB_QPS_RESET); | |
252 | ||
253 | spin_lock(&vf->lock); | |
254 | usnic_ib_qp_grp_destroy(qp_grp); | |
255 | spin_unlock(&vf->lock); | |
256 | } | |
257 | ||
c7845bca UM |
258 | static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) |
259 | { | |
260 | if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || | |
261 | cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) | |
262 | return -EINVAL; | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
e3cf00d0 UM |
267 | /* Start of ib callback functions */ |
268 | ||
269 | enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, | |
270 | u8 port_num) | |
271 | { | |
272 | return IB_LINK_LAYER_ETHERNET; | |
273 | } | |
274 | ||
275 | int usnic_ib_query_device(struct ib_device *ibdev, | |
2528e33e MB |
276 | struct ib_device_attr *props, |
277 | struct ib_udata *uhw) | |
e3cf00d0 UM |
278 | { |
279 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
280 | union ib_gid gid; | |
281 | struct ethtool_drvinfo info; | |
e3cf00d0 UM |
282 | int qp_per_vf; |
283 | ||
284 | usnic_dbg("\n"); | |
2528e33e MB |
285 | if (uhw->inlen || uhw->outlen) |
286 | return -EINVAL; | |
287 | ||
e3cf00d0 UM |
288 | mutex_lock(&us_ibdev->usdev_lock); |
289 | us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); | |
e3cf00d0 | 290 | memset(props, 0, sizeof(*props)); |
c7845bca UM |
291 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
292 | &gid.raw[0]); | |
e3cf00d0 UM |
293 | memcpy(&props->sys_image_guid, &gid.global.interface_id, |
294 | sizeof(gid.global.interface_id)); | |
295 | usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); | |
296 | props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; | |
297 | props->page_size_cap = USNIC_UIOM_PAGE_SIZE; | |
298 | props->vendor_id = PCI_VENDOR_ID_CISCO; | |
299 | props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; | |
300 | props->hw_ver = us_ibdev->pdev->subsystem_device; | |
301 | qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], | |
302 | us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); | |
303 | props->max_qp = qp_per_vf * | |
2c935bc5 | 304 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 UM |
305 | props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | |
306 | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; | |
307 | props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * | |
2c935bc5 | 308 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 UM |
309 | props->max_pd = USNIC_UIOM_MAX_PD_CNT; |
310 | props->max_mr = USNIC_UIOM_MAX_MR_CNT; | |
311 | props->local_ca_ack_delay = 0; | |
312 | props->max_pkeys = 0; | |
313 | props->atomic_cap = IB_ATOMIC_NONE; | |
314 | props->masked_atomic_cap = props->atomic_cap; | |
315 | props->max_qp_rd_atom = 0; | |
316 | props->max_qp_init_rd_atom = 0; | |
317 | props->max_res_rd_atom = 0; | |
318 | props->max_srq = 0; | |
319 | props->max_srq_wr = 0; | |
320 | props->max_srq_sge = 0; | |
321 | props->max_fast_reg_page_list_len = 0; | |
322 | props->max_mcast_grp = 0; | |
323 | props->max_mcast_qp_attach = 0; | |
324 | props->max_total_mcast_qp_attach = 0; | |
325 | props->max_map_per_fmr = 0; | |
326 | /* Owned by Userspace | |
327 | * max_qp_wr, max_sge, max_sge_rd, max_cqe */ | |
328 | mutex_unlock(&us_ibdev->usdev_lock); | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | int usnic_ib_query_port(struct ib_device *ibdev, u8 port, | |
334 | struct ib_port_attr *props) | |
335 | { | |
336 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
e3cf00d0 UM |
337 | |
338 | usnic_dbg("\n"); | |
339 | ||
7be05753 | 340 | if (ib_get_eth_speed(ibdev, port, &props->active_speed, |
8036e90f | 341 | &props->active_width)) |
d4186194 | 342 | return -EINVAL; |
d4186194 | 343 | |
8036e90f PK |
344 | /* |
345 | * usdev_lock is acquired after (and not before) ib_get_eth_speed call | |
346 | * because acquiring rtnl_lock in ib_get_eth_speed, while holding | |
347 | * usdev_lock could lead to a deadlock. | |
348 | */ | |
349 | mutex_lock(&us_ibdev->usdev_lock); | |
c4550c63 | 350 | /* props being zeroed by the caller, avoid zeroing it here */ |
e3cf00d0 UM |
351 | |
352 | props->lid = 0; | |
353 | props->lmc = 1; | |
354 | props->sm_lid = 0; | |
355 | props->sm_sl = 0; | |
356 | ||
c7845bca | 357 | if (!us_ibdev->ufdev->link_up) { |
e3cf00d0 UM |
358 | props->state = IB_PORT_DOWN; |
359 | props->phys_state = 3; | |
c7845bca UM |
360 | } else if (!us_ibdev->ufdev->inaddr) { |
361 | props->state = IB_PORT_INIT; | |
362 | props->phys_state = 4; | |
363 | } else { | |
364 | props->state = IB_PORT_ACTIVE; | |
365 | props->phys_state = 5; | |
e3cf00d0 UM |
366 | } |
367 | ||
368 | props->port_cap_flags = 0; | |
369 | props->gid_tbl_len = 1; | |
370 | props->pkey_tbl_len = 1; | |
371 | props->bad_pkey_cntr = 0; | |
372 | props->qkey_viol_cntr = 0; | |
e3cf00d0 | 373 | props->max_mtu = IB_MTU_4096; |
8af94ac6 | 374 | props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); |
e3cf00d0 | 375 | /* Userspace will adjust for hdrs */ |
8af94ac6 | 376 | props->max_msg_sz = us_ibdev->ufdev->mtu; |
e3cf00d0 UM |
377 | props->max_vl_num = 1; |
378 | mutex_unlock(&us_ibdev->usdev_lock); | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, | |
384 | int qp_attr_mask, | |
385 | struct ib_qp_init_attr *qp_init_attr) | |
386 | { | |
387 | struct usnic_ib_qp_grp *qp_grp; | |
388 | struct usnic_ib_vf *vf; | |
389 | int err; | |
390 | ||
391 | usnic_dbg("\n"); | |
392 | ||
393 | memset(qp_attr, 0, sizeof(*qp_attr)); | |
394 | memset(qp_init_attr, 0, sizeof(*qp_init_attr)); | |
395 | ||
396 | qp_grp = to_uqp_grp(qp); | |
397 | vf = qp_grp->vf; | |
398 | mutex_lock(&vf->pf->usdev_lock); | |
399 | usnic_dbg("\n"); | |
400 | qp_attr->qp_state = qp_grp->state; | |
401 | qp_attr->cur_qp_state = qp_grp->state; | |
402 | ||
403 | switch (qp_grp->ibqp.qp_type) { | |
404 | case IB_QPT_UD: | |
405 | qp_attr->qkey = 0; | |
406 | break; | |
407 | default: | |
408 | usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); | |
409 | err = -EINVAL; | |
410 | goto err_out; | |
411 | } | |
412 | ||
413 | mutex_unlock(&vf->pf->usdev_lock); | |
414 | return 0; | |
415 | ||
416 | err_out: | |
417 | mutex_unlock(&vf->pf->usdev_lock); | |
418 | return err; | |
419 | } | |
420 | ||
421 | int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index, | |
422 | union ib_gid *gid) | |
423 | { | |
424 | ||
425 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
426 | usnic_dbg("\n"); | |
427 | ||
428 | if (index > 1) | |
429 | return -EINVAL; | |
430 | ||
431 | mutex_lock(&us_ibdev->usdev_lock); | |
432 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); | |
c7845bca UM |
433 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
434 | &gid->raw[0]); | |
e3cf00d0 UM |
435 | mutex_unlock(&us_ibdev->usdev_lock); |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
440 | int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, | |
441 | u16 *pkey) | |
442 | { | |
4959d5da | 443 | if (index > 0) |
e3cf00d0 UM |
444 | return -EINVAL; |
445 | ||
446 | *pkey = 0xffff; | |
447 | return 0; | |
448 | } | |
449 | ||
21a428a0 LR |
450 | int usnic_ib_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context, |
451 | struct ib_udata *udata) | |
e3cf00d0 | 452 | { |
21a428a0 | 453 | struct usnic_ib_pd *pd = to_upd(ibpd); |
e3cf00d0 UM |
454 | void *umem_pd; |
455 | ||
e3cf00d0 UM |
456 | umem_pd = pd->umem_pd = usnic_uiom_alloc_pd(); |
457 | if (IS_ERR_OR_NULL(umem_pd)) { | |
21a428a0 | 458 | return umem_pd ? PTR_ERR(umem_pd) : -ENOMEM; |
e3cf00d0 UM |
459 | } |
460 | ||
21a428a0 | 461 | return 0; |
e3cf00d0 UM |
462 | } |
463 | ||
21a428a0 | 464 | void usnic_ib_dealloc_pd(struct ib_pd *pd) |
e3cf00d0 | 465 | { |
e3cf00d0 | 466 | usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); |
e3cf00d0 UM |
467 | } |
468 | ||
469 | struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd, | |
470 | struct ib_qp_init_attr *init_attr, | |
471 | struct ib_udata *udata) | |
472 | { | |
473 | int err; | |
474 | struct usnic_ib_dev *us_ibdev; | |
475 | struct usnic_ib_qp_grp *qp_grp; | |
89944450 SR |
476 | struct usnic_ib_ucontext *ucontext = rdma_udata_to_drv_context( |
477 | udata, struct usnic_ib_ucontext, ibucontext); | |
e3cf00d0 UM |
478 | int cq_cnt; |
479 | struct usnic_vnic_res_spec res_spec; | |
c7845bca | 480 | struct usnic_ib_create_qp_cmd cmd; |
8af94ac6 | 481 | struct usnic_transport_spec trans_spec; |
e3cf00d0 UM |
482 | |
483 | usnic_dbg("\n"); | |
484 | ||
e3cf00d0 UM |
485 | us_ibdev = to_usdev(pd->device); |
486 | ||
60093dc0 OG |
487 | if (init_attr->create_flags) |
488 | return ERR_PTR(-EINVAL); | |
489 | ||
c7845bca UM |
490 | err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); |
491 | if (err) { | |
492 | usnic_err("%s: cannot copy udata for create_qp\n", | |
9de69861 | 493 | dev_name(&us_ibdev->ib_dev.dev)); |
c7845bca UM |
494 | return ERR_PTR(-EINVAL); |
495 | } | |
496 | ||
497 | err = create_qp_validate_user_data(cmd); | |
498 | if (err) { | |
499 | usnic_err("%s: Failed to validate user data\n", | |
9de69861 | 500 | dev_name(&us_ibdev->ib_dev.dev)); |
c7845bca UM |
501 | return ERR_PTR(-EINVAL); |
502 | } | |
503 | ||
e3cf00d0 UM |
504 | if (init_attr->qp_type != IB_QPT_UD) { |
505 | usnic_err("%s asked to make a non-UD QP: %d\n", | |
9de69861 | 506 | dev_name(&us_ibdev->ib_dev.dev), init_attr->qp_type); |
e3cf00d0 UM |
507 | return ERR_PTR(-EINVAL); |
508 | } | |
509 | ||
c7845bca | 510 | trans_spec = cmd.spec; |
e3cf00d0 | 511 | mutex_lock(&us_ibdev->usdev_lock); |
8af94ac6 UM |
512 | cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; |
513 | res_spec = min_transport_spec[trans_spec.trans_type]; | |
e3cf00d0 UM |
514 | usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); |
515 | qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd), | |
8af94ac6 | 516 | &trans_spec, |
e3cf00d0 UM |
517 | &res_spec); |
518 | if (IS_ERR_OR_NULL(qp_grp)) { | |
6a54d9f9 | 519 | err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM; |
e3cf00d0 UM |
520 | goto out_release_mutex; |
521 | } | |
522 | ||
523 | err = usnic_ib_fill_create_qp_resp(qp_grp, udata); | |
524 | if (err) { | |
525 | err = -EBUSY; | |
526 | goto out_release_qp_grp; | |
527 | } | |
528 | ||
529 | qp_grp->ctx = ucontext; | |
530 | list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); | |
531 | usnic_ib_log_vf(qp_grp->vf); | |
532 | mutex_unlock(&us_ibdev->usdev_lock); | |
533 | return &qp_grp->ibqp; | |
534 | ||
535 | out_release_qp_grp: | |
536 | qp_grp_destroy(qp_grp); | |
537 | out_release_mutex: | |
538 | mutex_unlock(&us_ibdev->usdev_lock); | |
539 | return ERR_PTR(err); | |
540 | } | |
541 | ||
542 | int usnic_ib_destroy_qp(struct ib_qp *qp) | |
543 | { | |
544 | struct usnic_ib_qp_grp *qp_grp; | |
545 | struct usnic_ib_vf *vf; | |
546 | ||
547 | usnic_dbg("\n"); | |
548 | ||
549 | qp_grp = to_uqp_grp(qp); | |
550 | vf = qp_grp->vf; | |
551 | mutex_lock(&vf->pf->usdev_lock); | |
552 | if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { | |
553 | usnic_err("Failed to move qp grp %u to reset\n", | |
554 | qp_grp->grp_id); | |
555 | } | |
556 | ||
557 | list_del(&qp_grp->link); | |
558 | qp_grp_destroy(qp_grp); | |
559 | mutex_unlock(&vf->pf->usdev_lock); | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
564 | int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
565 | int attr_mask, struct ib_udata *udata) | |
566 | { | |
567 | struct usnic_ib_qp_grp *qp_grp; | |
568 | int status; | |
569 | usnic_dbg("\n"); | |
570 | ||
571 | qp_grp = to_uqp_grp(ibqp); | |
572 | ||
e3cf00d0 | 573 | mutex_lock(&qp_grp->vf->pf->usdev_lock); |
89e5323c NE |
574 | if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) { |
575 | /* usnic devices only have one port */ | |
576 | status = -EINVAL; | |
577 | goto out_unlock; | |
578 | } | |
579 | if (attr_mask & IB_QP_STATE) { | |
580 | status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL); | |
e3cf00d0 | 581 | } else { |
89e5323c | 582 | usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask); |
e3cf00d0 UM |
583 | status = -EINVAL; |
584 | } | |
585 | ||
89e5323c | 586 | out_unlock: |
e3cf00d0 UM |
587 | mutex_unlock(&qp_grp->vf->pf->usdev_lock); |
588 | return status; | |
589 | } | |
590 | ||
bcf4c1ea MB |
591 | struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, |
592 | const struct ib_cq_init_attr *attr, | |
593 | struct ib_ucontext *context, | |
594 | struct ib_udata *udata) | |
e3cf00d0 UM |
595 | { |
596 | struct ib_cq *cq; | |
597 | ||
598 | usnic_dbg("\n"); | |
bcf4c1ea MB |
599 | if (attr->flags) |
600 | return ERR_PTR(-EINVAL); | |
601 | ||
e3cf00d0 UM |
602 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); |
603 | if (!cq) | |
604 | return ERR_PTR(-EBUSY); | |
605 | ||
606 | return cq; | |
607 | } | |
608 | ||
609 | int usnic_ib_destroy_cq(struct ib_cq *cq) | |
610 | { | |
611 | usnic_dbg("\n"); | |
612 | kfree(cq); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, | |
617 | u64 virt_addr, int access_flags, | |
618 | struct ib_udata *udata) | |
619 | { | |
620 | struct usnic_ib_mr *mr; | |
621 | int err; | |
622 | ||
623 | usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, | |
624 | virt_addr, length); | |
625 | ||
626 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
59f65f49 JL |
627 | if (!mr) |
628 | return ERR_PTR(-ENOMEM); | |
e3cf00d0 UM |
629 | |
630 | mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, | |
631 | access_flags, 0); | |
632 | if (IS_ERR_OR_NULL(mr->umem)) { | |
6a54d9f9 | 633 | err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT; |
e3cf00d0 UM |
634 | goto err_free; |
635 | } | |
636 | ||
637 | mr->ibmr.lkey = mr->ibmr.rkey = 0; | |
638 | return &mr->ibmr; | |
639 | ||
640 | err_free: | |
641 | kfree(mr); | |
642 | return ERR_PTR(err); | |
643 | } | |
644 | ||
645 | int usnic_ib_dereg_mr(struct ib_mr *ibmr) | |
646 | { | |
647 | struct usnic_ib_mr *mr = to_umr(ibmr); | |
648 | ||
649 | usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); | |
650 | ||
43cbd64b | 651 | usnic_uiom_reg_release(mr->umem, ibmr->uobject->context); |
e3cf00d0 UM |
652 | kfree(mr); |
653 | return 0; | |
654 | } | |
655 | ||
a2a074ef | 656 | int usnic_ib_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) |
e3cf00d0 | 657 | { |
a2a074ef LR |
658 | struct ib_device *ibdev = uctx->device; |
659 | struct usnic_ib_ucontext *context = to_ucontext(uctx); | |
e3cf00d0 UM |
660 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); |
661 | usnic_dbg("\n"); | |
662 | ||
e3cf00d0 UM |
663 | INIT_LIST_HEAD(&context->qp_grp_list); |
664 | mutex_lock(&us_ibdev->usdev_lock); | |
665 | list_add_tail(&context->link, &us_ibdev->ctx_list); | |
666 | mutex_unlock(&us_ibdev->usdev_lock); | |
667 | ||
a2a074ef | 668 | return 0; |
e3cf00d0 UM |
669 | } |
670 | ||
a2a074ef | 671 | void usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) |
e3cf00d0 UM |
672 | { |
673 | struct usnic_ib_ucontext *context = to_uucontext(ibcontext); | |
674 | struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); | |
675 | usnic_dbg("\n"); | |
676 | ||
677 | mutex_lock(&us_ibdev->usdev_lock); | |
a2a074ef | 678 | WARN_ON_ONCE(!list_empty(&context->qp_grp_list)); |
e3cf00d0 UM |
679 | list_del(&context->link); |
680 | mutex_unlock(&us_ibdev->usdev_lock); | |
e3cf00d0 UM |
681 | } |
682 | ||
683 | int usnic_ib_mmap(struct ib_ucontext *context, | |
684 | struct vm_area_struct *vma) | |
685 | { | |
686 | struct usnic_ib_ucontext *uctx = to_ucontext(context); | |
687 | struct usnic_ib_dev *us_ibdev; | |
688 | struct usnic_ib_qp_grp *qp_grp; | |
689 | struct usnic_ib_vf *vf; | |
690 | struct vnic_dev_bar *bar; | |
691 | dma_addr_t bus_addr; | |
692 | unsigned int len; | |
693 | unsigned int vfid; | |
694 | ||
695 | usnic_dbg("\n"); | |
696 | ||
697 | us_ibdev = to_usdev(context->device); | |
698 | vma->vm_flags |= VM_IO; | |
699 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
700 | vfid = vma->vm_pgoff; | |
701 | usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", | |
702 | vma->vm_pgoff, PAGE_SHIFT, vfid); | |
703 | ||
704 | mutex_lock(&us_ibdev->usdev_lock); | |
705 | list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { | |
706 | vf = qp_grp->vf; | |
707 | if (usnic_vnic_get_index(vf->vnic) == vfid) { | |
708 | bar = usnic_vnic_get_bar(vf->vnic, 0); | |
709 | if ((vma->vm_end - vma->vm_start) != bar->len) { | |
710 | usnic_err("Bar0 Len %lu - Request map %lu\n", | |
711 | bar->len, | |
712 | vma->vm_end - vma->vm_start); | |
713 | mutex_unlock(&us_ibdev->usdev_lock); | |
714 | return -EINVAL; | |
715 | } | |
716 | bus_addr = bar->bus_addr; | |
717 | len = bar->len; | |
718 | usnic_dbg("bus: %pa vaddr: %p size: %ld\n", | |
719 | &bus_addr, bar->vaddr, bar->len); | |
720 | mutex_unlock(&us_ibdev->usdev_lock); | |
721 | ||
722 | return remap_pfn_range(vma, | |
723 | vma->vm_start, | |
724 | bus_addr >> PAGE_SHIFT, | |
725 | len, vma->vm_page_prot); | |
726 | } | |
727 | } | |
728 | ||
729 | mutex_unlock(&us_ibdev->usdev_lock); | |
730 | usnic_err("No VF %u found\n", vfid); | |
731 | return -EINVAL; | |
732 | } | |
733 | ||
e3cf00d0 | 734 | /* End of ib callbacks section */ |