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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> | |
40 | ||
41 | #include "usnic_abi.h" | |
42 | #include "usnic_ib.h" | |
43 | #include "usnic_common_util.h" | |
44 | #include "usnic_ib_qp_grp.h" | |
19188436 | 45 | #include "usnic_ib_verbs.h" |
e3cf00d0 UM |
46 | #include "usnic_fwd.h" |
47 | #include "usnic_log.h" | |
48 | #include "usnic_uiom.h" | |
49 | #include "usnic_transport.h" | |
50 | ||
51 | #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM | |
52 | ||
bd8c2021 BVA |
53 | const struct usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = { |
54 | { /*USNIC_TRANSPORT_UNKNOWN*/ | |
55 | .resources = { | |
56 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
57 | }, | |
58 | }, | |
59 | { /*USNIC_TRANSPORT_ROCE_CUSTOM*/ | |
60 | .resources = { | |
61 | {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, | |
62 | {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, | |
63 | {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, | |
64 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
65 | }, | |
66 | }, | |
67 | { /*USNIC_TRANSPORT_IPV4_UDP*/ | |
68 | .resources = { | |
69 | {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, | |
70 | {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, | |
71 | {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, | |
72 | {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, | |
73 | }, | |
74 | }, | |
75 | }; | |
76 | ||
e3cf00d0 UM |
77 | static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver) |
78 | { | |
3ea72861 | 79 | *fw_ver = *((u64 *)fw_ver_str); |
e3cf00d0 UM |
80 | } |
81 | ||
82 | static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp, | |
83 | struct ib_udata *udata) | |
84 | { | |
85 | struct usnic_ib_dev *us_ibdev; | |
86 | struct usnic_ib_create_qp_resp resp; | |
87 | struct pci_dev *pdev; | |
88 | struct vnic_dev_bar *bar; | |
89 | struct usnic_vnic_res_chunk *chunk; | |
8af94ac6 | 90 | struct usnic_ib_qp_grp_flow *default_flow; |
e3cf00d0 UM |
91 | int i, err; |
92 | ||
93 | memset(&resp, 0, sizeof(resp)); | |
94 | ||
95 | us_ibdev = qp_grp->vf->pf; | |
96 | pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); | |
97 | if (!pdev) { | |
98 | usnic_err("Failed to get pdev of qp_grp %d\n", | |
99 | qp_grp->grp_id); | |
100 | return -EFAULT; | |
101 | } | |
102 | ||
103 | bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0); | |
104 | if (!bar) { | |
105 | usnic_err("Failed to get bar0 of qp_grp %d vf %s", | |
106 | qp_grp->grp_id, pci_name(pdev)); | |
107 | return -EFAULT; | |
108 | } | |
109 | ||
110 | resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic); | |
111 | resp.bar_bus_addr = bar->bus_addr; | |
112 | resp.bar_len = bar->len; | |
e3cf00d0 UM |
113 | |
114 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
5f4c7e4e | 115 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
116 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
117 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), | |
118 | qp_grp->grp_id, | |
119 | PTR_ERR(chunk)); | |
5f4c7e4e | 120 | return PTR_ERR(chunk); |
e3cf00d0 UM |
121 | } |
122 | ||
123 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ); | |
124 | resp.rq_cnt = chunk->cnt; | |
125 | for (i = 0; i < chunk->cnt; i++) | |
126 | resp.rq_idx[i] = chunk->res[i]->vnic_idx; | |
127 | ||
128 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ); | |
5f4c7e4e | 129 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
130 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
131 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ), | |
132 | qp_grp->grp_id, | |
133 | PTR_ERR(chunk)); | |
5f4c7e4e | 134 | return PTR_ERR(chunk); |
e3cf00d0 UM |
135 | } |
136 | ||
137 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ); | |
138 | resp.wq_cnt = chunk->cnt; | |
139 | for (i = 0; i < chunk->cnt; i++) | |
140 | resp.wq_idx[i] = chunk->res[i]->vnic_idx; | |
141 | ||
142 | chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ); | |
5f4c7e4e | 143 | if (IS_ERR(chunk)) { |
e3cf00d0 UM |
144 | usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", |
145 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ), | |
146 | qp_grp->grp_id, | |
147 | PTR_ERR(chunk)); | |
5f4c7e4e | 148 | return PTR_ERR(chunk); |
e3cf00d0 UM |
149 | } |
150 | ||
151 | WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ); | |
152 | resp.cq_cnt = chunk->cnt; | |
153 | for (i = 0; i < chunk->cnt; i++) | |
154 | resp.cq_idx[i] = chunk->res[i]->vnic_idx; | |
155 | ||
8af94ac6 UM |
156 | default_flow = list_first_entry(&qp_grp->flows_lst, |
157 | struct usnic_ib_qp_grp_flow, link); | |
158 | resp.transport = default_flow->trans_type; | |
159 | ||
e3cf00d0 UM |
160 | err = ib_copy_to_udata(udata, &resp, sizeof(resp)); |
161 | if (err) { | |
162 | usnic_err("Failed to copy udata for %s", us_ibdev->ib_dev.name); | |
163 | return err; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | static struct usnic_ib_qp_grp* | |
170 | find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev, | |
171 | struct usnic_ib_pd *pd, | |
8af94ac6 | 172 | struct usnic_transport_spec *trans_spec, |
e3cf00d0 UM |
173 | struct usnic_vnic_res_spec *res_spec) |
174 | { | |
175 | struct usnic_ib_vf *vf; | |
176 | struct usnic_vnic *vnic; | |
177 | struct usnic_ib_qp_grp *qp_grp; | |
178 | struct device *dev, **dev_list; | |
313e16d5 | 179 | int i; |
e3cf00d0 UM |
180 | |
181 | BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); | |
182 | ||
183 | if (list_empty(&us_ibdev->vf_dev_list)) { | |
184 | usnic_info("No vfs to allocate\n"); | |
185 | return NULL; | |
186 | } | |
187 | ||
e3cf00d0 UM |
188 | if (usnic_ib_share_vf) { |
189 | /* Try to find resouces on a used vf which is in pd */ | |
190 | dev_list = usnic_uiom_get_dev_list(pd->umem_pd); | |
d518a44d DC |
191 | if (IS_ERR(dev_list)) |
192 | return ERR_CAST(dev_list); | |
e3cf00d0 UM |
193 | for (i = 0; dev_list[i]; i++) { |
194 | dev = dev_list[i]; | |
195 | vf = pci_get_drvdata(to_pci_dev(dev)); | |
196 | spin_lock(&vf->lock); | |
197 | vnic = vf->vnic; | |
198 | if (!usnic_vnic_check_room(vnic, res_spec)) { | |
199 | usnic_dbg("Found used vnic %s from %s\n", | |
200 | us_ibdev->ib_dev.name, | |
201 | pci_name(usnic_vnic_get_pdev( | |
202 | vnic))); | |
313e16d5 LR |
203 | qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, |
204 | vf, pd, | |
205 | res_spec, | |
206 | trans_spec); | |
207 | ||
208 | spin_unlock(&vf->lock); | |
209 | goto qp_grp_check; | |
e3cf00d0 UM |
210 | } |
211 | spin_unlock(&vf->lock); | |
212 | ||
213 | } | |
214 | usnic_uiom_free_dev_list(dev_list); | |
215 | } | |
216 | ||
313e16d5 LR |
217 | /* Try to find resources on an unused vf */ |
218 | list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) { | |
219 | spin_lock(&vf->lock); | |
220 | vnic = vf->vnic; | |
221 | if (vf->qp_grp_ref_cnt == 0 && | |
222 | usnic_vnic_check_room(vnic, res_spec) == 0) { | |
223 | qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, | |
224 | pd, res_spec, | |
225 | trans_spec); | |
226 | ||
e3cf00d0 | 227 | spin_unlock(&vf->lock); |
313e16d5 | 228 | goto qp_grp_check; |
e3cf00d0 | 229 | } |
313e16d5 | 230 | spin_unlock(&vf->lock); |
e3cf00d0 UM |
231 | } |
232 | ||
313e16d5 LR |
233 | usnic_info("No free qp grp found on %s\n", us_ibdev->ib_dev.name); |
234 | return ERR_PTR(-ENOMEM); | |
e3cf00d0 | 235 | |
313e16d5 | 236 | qp_grp_check: |
e3cf00d0 UM |
237 | if (IS_ERR_OR_NULL(qp_grp)) { |
238 | usnic_err("Failed to allocate qp_grp\n"); | |
239 | return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM); | |
240 | } | |
e3cf00d0 UM |
241 | return qp_grp; |
242 | } | |
243 | ||
244 | static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) | |
245 | { | |
246 | struct usnic_ib_vf *vf = qp_grp->vf; | |
247 | ||
248 | WARN_ON(qp_grp->state != IB_QPS_RESET); | |
249 | ||
250 | spin_lock(&vf->lock); | |
251 | usnic_ib_qp_grp_destroy(qp_grp); | |
252 | spin_unlock(&vf->lock); | |
253 | } | |
254 | ||
c7845bca UM |
255 | static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) |
256 | { | |
257 | if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || | |
258 | cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) | |
259 | return -EINVAL; | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
e3cf00d0 UM |
264 | /* Start of ib callback functions */ |
265 | ||
266 | enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, | |
267 | u8 port_num) | |
268 | { | |
269 | return IB_LINK_LAYER_ETHERNET; | |
270 | } | |
271 | ||
272 | int usnic_ib_query_device(struct ib_device *ibdev, | |
2528e33e MB |
273 | struct ib_device_attr *props, |
274 | struct ib_udata *uhw) | |
e3cf00d0 UM |
275 | { |
276 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
277 | union ib_gid gid; | |
278 | struct ethtool_drvinfo info; | |
e3cf00d0 UM |
279 | int qp_per_vf; |
280 | ||
281 | usnic_dbg("\n"); | |
2528e33e MB |
282 | if (uhw->inlen || uhw->outlen) |
283 | return -EINVAL; | |
284 | ||
e3cf00d0 UM |
285 | mutex_lock(&us_ibdev->usdev_lock); |
286 | us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); | |
e3cf00d0 | 287 | memset(props, 0, sizeof(*props)); |
c7845bca UM |
288 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
289 | &gid.raw[0]); | |
e3cf00d0 UM |
290 | memcpy(&props->sys_image_guid, &gid.global.interface_id, |
291 | sizeof(gid.global.interface_id)); | |
292 | usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); | |
293 | props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; | |
294 | props->page_size_cap = USNIC_UIOM_PAGE_SIZE; | |
295 | props->vendor_id = PCI_VENDOR_ID_CISCO; | |
296 | props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; | |
297 | props->hw_ver = us_ibdev->pdev->subsystem_device; | |
298 | qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], | |
299 | us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); | |
300 | props->max_qp = qp_per_vf * | |
2c935bc5 | 301 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 UM |
302 | props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | |
303 | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; | |
304 | props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * | |
2c935bc5 | 305 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 UM |
306 | props->max_pd = USNIC_UIOM_MAX_PD_CNT; |
307 | props->max_mr = USNIC_UIOM_MAX_MR_CNT; | |
308 | props->local_ca_ack_delay = 0; | |
309 | props->max_pkeys = 0; | |
310 | props->atomic_cap = IB_ATOMIC_NONE; | |
311 | props->masked_atomic_cap = props->atomic_cap; | |
312 | props->max_qp_rd_atom = 0; | |
313 | props->max_qp_init_rd_atom = 0; | |
314 | props->max_res_rd_atom = 0; | |
315 | props->max_srq = 0; | |
316 | props->max_srq_wr = 0; | |
317 | props->max_srq_sge = 0; | |
318 | props->max_fast_reg_page_list_len = 0; | |
319 | props->max_mcast_grp = 0; | |
320 | props->max_mcast_qp_attach = 0; | |
321 | props->max_total_mcast_qp_attach = 0; | |
322 | props->max_map_per_fmr = 0; | |
323 | /* Owned by Userspace | |
324 | * max_qp_wr, max_sge, max_sge_rd, max_cqe */ | |
325 | mutex_unlock(&us_ibdev->usdev_lock); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | int usnic_ib_query_port(struct ib_device *ibdev, u8 port, | |
331 | struct ib_port_attr *props) | |
332 | { | |
333 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
e3cf00d0 UM |
334 | |
335 | usnic_dbg("\n"); | |
336 | ||
337 | mutex_lock(&us_ibdev->usdev_lock); | |
7be05753 SX |
338 | if (ib_get_eth_speed(ibdev, port, &props->active_speed, |
339 | &props->active_width)) { | |
d4186194 YS |
340 | mutex_unlock(&us_ibdev->usdev_lock); |
341 | return -EINVAL; | |
342 | } | |
343 | ||
c4550c63 | 344 | /* props being zeroed by the caller, avoid zeroing it here */ |
e3cf00d0 UM |
345 | |
346 | props->lid = 0; | |
347 | props->lmc = 1; | |
348 | props->sm_lid = 0; | |
349 | props->sm_sl = 0; | |
350 | ||
c7845bca | 351 | if (!us_ibdev->ufdev->link_up) { |
e3cf00d0 UM |
352 | props->state = IB_PORT_DOWN; |
353 | props->phys_state = 3; | |
c7845bca UM |
354 | } else if (!us_ibdev->ufdev->inaddr) { |
355 | props->state = IB_PORT_INIT; | |
356 | props->phys_state = 4; | |
357 | } else { | |
358 | props->state = IB_PORT_ACTIVE; | |
359 | props->phys_state = 5; | |
e3cf00d0 UM |
360 | } |
361 | ||
362 | props->port_cap_flags = 0; | |
363 | props->gid_tbl_len = 1; | |
364 | props->pkey_tbl_len = 1; | |
365 | props->bad_pkey_cntr = 0; | |
366 | props->qkey_viol_cntr = 0; | |
e3cf00d0 | 367 | props->max_mtu = IB_MTU_4096; |
8af94ac6 | 368 | props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); |
e3cf00d0 | 369 | /* Userspace will adjust for hdrs */ |
8af94ac6 | 370 | props->max_msg_sz = us_ibdev->ufdev->mtu; |
e3cf00d0 UM |
371 | props->max_vl_num = 1; |
372 | mutex_unlock(&us_ibdev->usdev_lock); | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, | |
378 | int qp_attr_mask, | |
379 | struct ib_qp_init_attr *qp_init_attr) | |
380 | { | |
381 | struct usnic_ib_qp_grp *qp_grp; | |
382 | struct usnic_ib_vf *vf; | |
383 | int err; | |
384 | ||
385 | usnic_dbg("\n"); | |
386 | ||
387 | memset(qp_attr, 0, sizeof(*qp_attr)); | |
388 | memset(qp_init_attr, 0, sizeof(*qp_init_attr)); | |
389 | ||
390 | qp_grp = to_uqp_grp(qp); | |
391 | vf = qp_grp->vf; | |
392 | mutex_lock(&vf->pf->usdev_lock); | |
393 | usnic_dbg("\n"); | |
394 | qp_attr->qp_state = qp_grp->state; | |
395 | qp_attr->cur_qp_state = qp_grp->state; | |
396 | ||
397 | switch (qp_grp->ibqp.qp_type) { | |
398 | case IB_QPT_UD: | |
399 | qp_attr->qkey = 0; | |
400 | break; | |
401 | default: | |
402 | usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); | |
403 | err = -EINVAL; | |
404 | goto err_out; | |
405 | } | |
406 | ||
407 | mutex_unlock(&vf->pf->usdev_lock); | |
408 | return 0; | |
409 | ||
410 | err_out: | |
411 | mutex_unlock(&vf->pf->usdev_lock); | |
412 | return err; | |
413 | } | |
414 | ||
415 | int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index, | |
416 | union ib_gid *gid) | |
417 | { | |
418 | ||
419 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
420 | usnic_dbg("\n"); | |
421 | ||
422 | if (index > 1) | |
423 | return -EINVAL; | |
424 | ||
425 | mutex_lock(&us_ibdev->usdev_lock); | |
426 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); | |
c7845bca UM |
427 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
428 | &gid->raw[0]); | |
e3cf00d0 UM |
429 | mutex_unlock(&us_ibdev->usdev_lock); |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
44b0b745 YS |
434 | struct net_device *usnic_get_netdev(struct ib_device *device, u8 port_num) |
435 | { | |
436 | struct usnic_ib_dev *us_ibdev = to_usdev(device); | |
437 | ||
438 | if (us_ibdev->netdev) | |
439 | dev_hold(us_ibdev->netdev); | |
440 | ||
441 | return us_ibdev->netdev; | |
442 | } | |
443 | ||
e3cf00d0 UM |
444 | int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, |
445 | u16 *pkey) | |
446 | { | |
447 | if (index > 1) | |
448 | return -EINVAL; | |
449 | ||
450 | *pkey = 0xffff; | |
451 | return 0; | |
452 | } | |
453 | ||
454 | struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev, | |
455 | struct ib_ucontext *context, | |
456 | struct ib_udata *udata) | |
457 | { | |
458 | struct usnic_ib_pd *pd; | |
459 | void *umem_pd; | |
460 | ||
461 | usnic_dbg("\n"); | |
462 | ||
463 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
464 | if (!pd) | |
465 | return ERR_PTR(-ENOMEM); | |
466 | ||
467 | umem_pd = pd->umem_pd = usnic_uiom_alloc_pd(); | |
468 | if (IS_ERR_OR_NULL(umem_pd)) { | |
469 | kfree(pd); | |
470 | return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM); | |
471 | } | |
472 | ||
473 | usnic_info("domain 0x%p allocated for context 0x%p and device %s\n", | |
474 | pd, context, ibdev->name); | |
475 | return &pd->ibpd; | |
476 | } | |
477 | ||
478 | int usnic_ib_dealloc_pd(struct ib_pd *pd) | |
479 | { | |
480 | usnic_info("freeing domain 0x%p\n", pd); | |
481 | ||
482 | usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); | |
483 | kfree(pd); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd, | |
488 | struct ib_qp_init_attr *init_attr, | |
489 | struct ib_udata *udata) | |
490 | { | |
491 | int err; | |
492 | struct usnic_ib_dev *us_ibdev; | |
493 | struct usnic_ib_qp_grp *qp_grp; | |
494 | struct usnic_ib_ucontext *ucontext; | |
495 | int cq_cnt; | |
496 | struct usnic_vnic_res_spec res_spec; | |
c7845bca | 497 | struct usnic_ib_create_qp_cmd cmd; |
8af94ac6 | 498 | struct usnic_transport_spec trans_spec; |
e3cf00d0 UM |
499 | |
500 | usnic_dbg("\n"); | |
501 | ||
502 | ucontext = to_uucontext(pd->uobject->context); | |
503 | us_ibdev = to_usdev(pd->device); | |
504 | ||
60093dc0 OG |
505 | if (init_attr->create_flags) |
506 | return ERR_PTR(-EINVAL); | |
507 | ||
c7845bca UM |
508 | err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); |
509 | if (err) { | |
510 | usnic_err("%s: cannot copy udata for create_qp\n", | |
511 | us_ibdev->ib_dev.name); | |
512 | return ERR_PTR(-EINVAL); | |
513 | } | |
514 | ||
515 | err = create_qp_validate_user_data(cmd); | |
516 | if (err) { | |
517 | usnic_err("%s: Failed to validate user data\n", | |
518 | us_ibdev->ib_dev.name); | |
519 | return ERR_PTR(-EINVAL); | |
520 | } | |
521 | ||
e3cf00d0 UM |
522 | if (init_attr->qp_type != IB_QPT_UD) { |
523 | usnic_err("%s asked to make a non-UD QP: %d\n", | |
524 | us_ibdev->ib_dev.name, init_attr->qp_type); | |
525 | return ERR_PTR(-EINVAL); | |
526 | } | |
527 | ||
c7845bca | 528 | trans_spec = cmd.spec; |
e3cf00d0 | 529 | mutex_lock(&us_ibdev->usdev_lock); |
8af94ac6 UM |
530 | cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; |
531 | res_spec = min_transport_spec[trans_spec.trans_type]; | |
e3cf00d0 UM |
532 | usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); |
533 | qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd), | |
8af94ac6 | 534 | &trans_spec, |
e3cf00d0 UM |
535 | &res_spec); |
536 | if (IS_ERR_OR_NULL(qp_grp)) { | |
6a54d9f9 | 537 | err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM; |
e3cf00d0 UM |
538 | goto out_release_mutex; |
539 | } | |
540 | ||
541 | err = usnic_ib_fill_create_qp_resp(qp_grp, udata); | |
542 | if (err) { | |
543 | err = -EBUSY; | |
544 | goto out_release_qp_grp; | |
545 | } | |
546 | ||
547 | qp_grp->ctx = ucontext; | |
548 | list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); | |
549 | usnic_ib_log_vf(qp_grp->vf); | |
550 | mutex_unlock(&us_ibdev->usdev_lock); | |
551 | return &qp_grp->ibqp; | |
552 | ||
553 | out_release_qp_grp: | |
554 | qp_grp_destroy(qp_grp); | |
555 | out_release_mutex: | |
556 | mutex_unlock(&us_ibdev->usdev_lock); | |
557 | return ERR_PTR(err); | |
558 | } | |
559 | ||
560 | int usnic_ib_destroy_qp(struct ib_qp *qp) | |
561 | { | |
562 | struct usnic_ib_qp_grp *qp_grp; | |
563 | struct usnic_ib_vf *vf; | |
564 | ||
565 | usnic_dbg("\n"); | |
566 | ||
567 | qp_grp = to_uqp_grp(qp); | |
568 | vf = qp_grp->vf; | |
569 | mutex_lock(&vf->pf->usdev_lock); | |
570 | if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { | |
571 | usnic_err("Failed to move qp grp %u to reset\n", | |
572 | qp_grp->grp_id); | |
573 | } | |
574 | ||
575 | list_del(&qp_grp->link); | |
576 | qp_grp_destroy(qp_grp); | |
577 | mutex_unlock(&vf->pf->usdev_lock); | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
583 | int attr_mask, struct ib_udata *udata) | |
584 | { | |
585 | struct usnic_ib_qp_grp *qp_grp; | |
586 | int status; | |
587 | usnic_dbg("\n"); | |
588 | ||
589 | qp_grp = to_uqp_grp(ibqp); | |
590 | ||
e3cf00d0 | 591 | mutex_lock(&qp_grp->vf->pf->usdev_lock); |
89e5323c NE |
592 | if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) { |
593 | /* usnic devices only have one port */ | |
594 | status = -EINVAL; | |
595 | goto out_unlock; | |
596 | } | |
597 | if (attr_mask & IB_QP_STATE) { | |
598 | status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL); | |
e3cf00d0 | 599 | } else { |
89e5323c | 600 | usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask); |
e3cf00d0 UM |
601 | status = -EINVAL; |
602 | } | |
603 | ||
89e5323c | 604 | out_unlock: |
e3cf00d0 UM |
605 | mutex_unlock(&qp_grp->vf->pf->usdev_lock); |
606 | return status; | |
607 | } | |
608 | ||
bcf4c1ea MB |
609 | struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, |
610 | const struct ib_cq_init_attr *attr, | |
611 | struct ib_ucontext *context, | |
612 | struct ib_udata *udata) | |
e3cf00d0 UM |
613 | { |
614 | struct ib_cq *cq; | |
615 | ||
616 | usnic_dbg("\n"); | |
bcf4c1ea MB |
617 | if (attr->flags) |
618 | return ERR_PTR(-EINVAL); | |
619 | ||
e3cf00d0 UM |
620 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); |
621 | if (!cq) | |
622 | return ERR_PTR(-EBUSY); | |
623 | ||
624 | return cq; | |
625 | } | |
626 | ||
627 | int usnic_ib_destroy_cq(struct ib_cq *cq) | |
628 | { | |
629 | usnic_dbg("\n"); | |
630 | kfree(cq); | |
631 | return 0; | |
632 | } | |
633 | ||
634 | struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, | |
635 | u64 virt_addr, int access_flags, | |
636 | struct ib_udata *udata) | |
637 | { | |
638 | struct usnic_ib_mr *mr; | |
639 | int err; | |
640 | ||
641 | usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, | |
642 | virt_addr, length); | |
643 | ||
644 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
59f65f49 JL |
645 | if (!mr) |
646 | return ERR_PTR(-ENOMEM); | |
e3cf00d0 UM |
647 | |
648 | mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, | |
649 | access_flags, 0); | |
650 | if (IS_ERR_OR_NULL(mr->umem)) { | |
6a54d9f9 | 651 | err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT; |
e3cf00d0 UM |
652 | goto err_free; |
653 | } | |
654 | ||
655 | mr->ibmr.lkey = mr->ibmr.rkey = 0; | |
656 | return &mr->ibmr; | |
657 | ||
658 | err_free: | |
659 | kfree(mr); | |
660 | return ERR_PTR(err); | |
661 | } | |
662 | ||
663 | int usnic_ib_dereg_mr(struct ib_mr *ibmr) | |
664 | { | |
665 | struct usnic_ib_mr *mr = to_umr(ibmr); | |
666 | ||
667 | usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); | |
668 | ||
43cbd64b | 669 | usnic_uiom_reg_release(mr->umem, ibmr->uobject->context); |
e3cf00d0 UM |
670 | kfree(mr); |
671 | return 0; | |
672 | } | |
673 | ||
674 | struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev, | |
675 | struct ib_udata *udata) | |
676 | { | |
677 | struct usnic_ib_ucontext *context; | |
678 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
679 | usnic_dbg("\n"); | |
680 | ||
681 | context = kmalloc(sizeof(*context), GFP_KERNEL); | |
682 | if (!context) | |
683 | return ERR_PTR(-ENOMEM); | |
684 | ||
685 | INIT_LIST_HEAD(&context->qp_grp_list); | |
686 | mutex_lock(&us_ibdev->usdev_lock); | |
687 | list_add_tail(&context->link, &us_ibdev->ctx_list); | |
688 | mutex_unlock(&us_ibdev->usdev_lock); | |
689 | ||
690 | return &context->ibucontext; | |
691 | } | |
692 | ||
693 | int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) | |
694 | { | |
695 | struct usnic_ib_ucontext *context = to_uucontext(ibcontext); | |
696 | struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); | |
697 | usnic_dbg("\n"); | |
698 | ||
699 | mutex_lock(&us_ibdev->usdev_lock); | |
700 | BUG_ON(!list_empty(&context->qp_grp_list)); | |
701 | list_del(&context->link); | |
702 | mutex_unlock(&us_ibdev->usdev_lock); | |
703 | kfree(context); | |
704 | return 0; | |
705 | } | |
706 | ||
707 | int usnic_ib_mmap(struct ib_ucontext *context, | |
708 | struct vm_area_struct *vma) | |
709 | { | |
710 | struct usnic_ib_ucontext *uctx = to_ucontext(context); | |
711 | struct usnic_ib_dev *us_ibdev; | |
712 | struct usnic_ib_qp_grp *qp_grp; | |
713 | struct usnic_ib_vf *vf; | |
714 | struct vnic_dev_bar *bar; | |
715 | dma_addr_t bus_addr; | |
716 | unsigned int len; | |
717 | unsigned int vfid; | |
718 | ||
719 | usnic_dbg("\n"); | |
720 | ||
721 | us_ibdev = to_usdev(context->device); | |
722 | vma->vm_flags |= VM_IO; | |
723 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
724 | vfid = vma->vm_pgoff; | |
725 | usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", | |
726 | vma->vm_pgoff, PAGE_SHIFT, vfid); | |
727 | ||
728 | mutex_lock(&us_ibdev->usdev_lock); | |
729 | list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { | |
730 | vf = qp_grp->vf; | |
731 | if (usnic_vnic_get_index(vf->vnic) == vfid) { | |
732 | bar = usnic_vnic_get_bar(vf->vnic, 0); | |
733 | if ((vma->vm_end - vma->vm_start) != bar->len) { | |
734 | usnic_err("Bar0 Len %lu - Request map %lu\n", | |
735 | bar->len, | |
736 | vma->vm_end - vma->vm_start); | |
737 | mutex_unlock(&us_ibdev->usdev_lock); | |
738 | return -EINVAL; | |
739 | } | |
740 | bus_addr = bar->bus_addr; | |
741 | len = bar->len; | |
742 | usnic_dbg("bus: %pa vaddr: %p size: %ld\n", | |
743 | &bus_addr, bar->vaddr, bar->len); | |
744 | mutex_unlock(&us_ibdev->usdev_lock); | |
745 | ||
746 | return remap_pfn_range(vma, | |
747 | vma->vm_start, | |
748 | bus_addr >> PAGE_SHIFT, | |
749 | len, vma->vm_page_prot); | |
750 | } | |
751 | } | |
752 | ||
753 | mutex_unlock(&us_ibdev->usdev_lock); | |
754 | usnic_err("No VF %u found\n", vfid); | |
755 | return -EINVAL; | |
756 | } | |
757 | ||
758 | /* In ib callbacks section - Start of stub funcs */ | |
759 | struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd, | |
90898850 | 760 | struct rdma_ah_attr *ah_attr, |
477864c8 MS |
761 | struct ib_udata *udata) |
762 | ||
e3cf00d0 UM |
763 | { |
764 | usnic_dbg("\n"); | |
765 | return ERR_PTR(-EPERM); | |
766 | } | |
767 | ||
768 | int usnic_ib_destroy_ah(struct ib_ah *ah) | |
769 | { | |
770 | usnic_dbg("\n"); | |
771 | return -EINVAL; | |
772 | } | |
773 | ||
d34ac5cd BVA |
774 | int usnic_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, |
775 | const struct ib_send_wr **bad_wr) | |
e3cf00d0 UM |
776 | { |
777 | usnic_dbg("\n"); | |
778 | return -EINVAL; | |
779 | } | |
780 | ||
d34ac5cd BVA |
781 | int usnic_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, |
782 | const struct ib_recv_wr **bad_wr) | |
e3cf00d0 UM |
783 | { |
784 | usnic_dbg("\n"); | |
785 | return -EINVAL; | |
786 | } | |
787 | ||
788 | int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries, | |
789 | struct ib_wc *wc) | |
790 | { | |
791 | usnic_dbg("\n"); | |
792 | return -EINVAL; | |
793 | } | |
794 | ||
795 | int usnic_ib_req_notify_cq(struct ib_cq *cq, | |
796 | enum ib_cq_notify_flags flags) | |
797 | { | |
798 | usnic_dbg("\n"); | |
799 | return -EINVAL; | |
800 | } | |
801 | ||
802 | struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
803 | { | |
804 | usnic_dbg("\n"); | |
805 | return ERR_PTR(-ENOMEM); | |
806 | } | |
807 | ||
808 | ||
809 | /* In ib callbacks section - End of stub funcs */ | |
810 | /* End of ib callbacks section */ |