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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 | */ | |
e3cf00d0 UM |
33 | #include <linux/init.h> |
34 | #include <linux/slab.h> | |
35 | #include <linux/errno.h> | |
36 | ||
37 | #include <rdma/ib_user_verbs.h> | |
38 | #include <rdma/ib_addr.h> | |
89944450 | 39 | #include <rdma/uverbs_ioctl.h> |
e3cf00d0 UM |
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) { | |
9de69861 JG |
162 | usnic_err("Failed to copy udata for %s", |
163 | dev_name(&us_ibdev->ib_dev.dev)); | |
e3cf00d0 UM |
164 | return err; |
165 | } | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
514aee66 LR |
170 | static int |
171 | find_free_vf_and_create_qp_grp(struct ib_qp *qp, | |
172 | struct usnic_transport_spec *trans_spec, | |
173 | struct usnic_vnic_res_spec *res_spec) | |
e3cf00d0 | 174 | { |
514aee66 LR |
175 | struct usnic_ib_dev *us_ibdev = to_usdev(qp->device); |
176 | struct usnic_ib_pd *pd = to_upd(qp->pd); | |
e3cf00d0 UM |
177 | struct usnic_ib_vf *vf; |
178 | struct usnic_vnic *vnic; | |
514aee66 | 179 | struct usnic_ib_qp_grp *qp_grp = to_uqp_grp(qp); |
e3cf00d0 | 180 | struct device *dev, **dev_list; |
514aee66 | 181 | int i, ret; |
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"); | |
514aee66 | 187 | return -ENOMEM; |
e3cf00d0 UM |
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 | 193 | if (IS_ERR(dev_list)) |
514aee66 | 194 | return PTR_ERR(dev_list); |
e3cf00d0 UM |
195 | for (i = 0; dev_list[i]; i++) { |
196 | dev = dev_list[i]; | |
4f96061b | 197 | vf = dev_get_drvdata(dev); |
a86cd017 | 198 | mutex_lock(&vf->lock); |
e3cf00d0 UM |
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))); | |
514aee66 LR |
205 | ret = usnic_ib_qp_grp_create(qp_grp, |
206 | us_ibdev->ufdev, | |
207 | vf, pd, res_spec, | |
208 | trans_spec); | |
313e16d5 | 209 | |
a86cd017 | 210 | mutex_unlock(&vf->lock); |
313e16d5 | 211 | goto qp_grp_check; |
e3cf00d0 | 212 | } |
a86cd017 | 213 | mutex_unlock(&vf->lock); |
e3cf00d0 UM |
214 | |
215 | } | |
216 | usnic_uiom_free_dev_list(dev_list); | |
a306aba9 | 217 | dev_list = NULL; |
e3cf00d0 UM |
218 | } |
219 | ||
313e16d5 LR |
220 | /* Try to find resources on an unused vf */ |
221 | list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) { | |
a86cd017 | 222 | mutex_lock(&vf->lock); |
313e16d5 LR |
223 | vnic = vf->vnic; |
224 | if (vf->qp_grp_ref_cnt == 0 && | |
225 | usnic_vnic_check_room(vnic, res_spec) == 0) { | |
514aee66 LR |
226 | ret = usnic_ib_qp_grp_create(qp_grp, us_ibdev->ufdev, |
227 | vf, pd, res_spec, | |
228 | trans_spec); | |
313e16d5 | 229 | |
a86cd017 | 230 | mutex_unlock(&vf->lock); |
313e16d5 | 231 | goto qp_grp_check; |
e3cf00d0 | 232 | } |
a86cd017 | 233 | mutex_unlock(&vf->lock); |
e3cf00d0 UM |
234 | } |
235 | ||
9de69861 JG |
236 | usnic_info("No free qp grp found on %s\n", |
237 | dev_name(&us_ibdev->ib_dev.dev)); | |
514aee66 | 238 | return -ENOMEM; |
e3cf00d0 | 239 | |
313e16d5 | 240 | qp_grp_check: |
514aee66 | 241 | if (ret) { |
e3cf00d0 | 242 | usnic_err("Failed to allocate qp_grp\n"); |
a306aba9 DL |
243 | if (usnic_ib_share_vf) |
244 | usnic_uiom_free_dev_list(dev_list); | |
e3cf00d0 | 245 | } |
514aee66 | 246 | return ret; |
e3cf00d0 UM |
247 | } |
248 | ||
249 | static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) | |
250 | { | |
251 | struct usnic_ib_vf *vf = qp_grp->vf; | |
252 | ||
253 | WARN_ON(qp_grp->state != IB_QPS_RESET); | |
254 | ||
a86cd017 | 255 | mutex_lock(&vf->lock); |
e3cf00d0 | 256 | usnic_ib_qp_grp_destroy(qp_grp); |
a86cd017 | 257 | mutex_unlock(&vf->lock); |
e3cf00d0 UM |
258 | } |
259 | ||
c7845bca UM |
260 | static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) |
261 | { | |
262 | if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || | |
263 | cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) | |
264 | return -EINVAL; | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
e3cf00d0 UM |
269 | /* Start of ib callback functions */ |
270 | ||
271 | enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, | |
1fb7f897 | 272 | u32 port_num) |
e3cf00d0 UM |
273 | { |
274 | return IB_LINK_LAYER_ETHERNET; | |
275 | } | |
276 | ||
277 | int usnic_ib_query_device(struct ib_device *ibdev, | |
2528e33e MB |
278 | struct ib_device_attr *props, |
279 | struct ib_udata *uhw) | |
e3cf00d0 UM |
280 | { |
281 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
282 | union ib_gid gid; | |
283 | struct ethtool_drvinfo info; | |
e3cf00d0 UM |
284 | int qp_per_vf; |
285 | ||
286 | usnic_dbg("\n"); | |
2528e33e MB |
287 | if (uhw->inlen || uhw->outlen) |
288 | return -EINVAL; | |
289 | ||
e3cf00d0 UM |
290 | mutex_lock(&us_ibdev->usdev_lock); |
291 | us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); | |
e3cf00d0 | 292 | memset(props, 0, sizeof(*props)); |
c7845bca UM |
293 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
294 | &gid.raw[0]); | |
e3cf00d0 UM |
295 | memcpy(&props->sys_image_guid, &gid.global.interface_id, |
296 | sizeof(gid.global.interface_id)); | |
297 | usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); | |
298 | props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; | |
299 | props->page_size_cap = USNIC_UIOM_PAGE_SIZE; | |
300 | props->vendor_id = PCI_VENDOR_ID_CISCO; | |
301 | props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; | |
302 | props->hw_ver = us_ibdev->pdev->subsystem_device; | |
303 | qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], | |
304 | us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); | |
305 | props->max_qp = qp_per_vf * | |
2c935bc5 | 306 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 | 307 | props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | |
e945c653 JG |
308 | IB_DEVICE_SYS_IMAGE_GUID; |
309 | props->kernel_cap_flags = IBK_BLOCK_MULTICAST_LOOPBACK; | |
e3cf00d0 | 310 | props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * |
2c935bc5 | 311 | kref_read(&us_ibdev->vf_cnt); |
e3cf00d0 UM |
312 | props->max_pd = USNIC_UIOM_MAX_PD_CNT; |
313 | props->max_mr = USNIC_UIOM_MAX_MR_CNT; | |
314 | props->local_ca_ack_delay = 0; | |
315 | props->max_pkeys = 0; | |
316 | props->atomic_cap = IB_ATOMIC_NONE; | |
317 | props->masked_atomic_cap = props->atomic_cap; | |
318 | props->max_qp_rd_atom = 0; | |
319 | props->max_qp_init_rd_atom = 0; | |
320 | props->max_res_rd_atom = 0; | |
321 | props->max_srq = 0; | |
322 | props->max_srq_wr = 0; | |
323 | props->max_srq_sge = 0; | |
324 | props->max_fast_reg_page_list_len = 0; | |
325 | props->max_mcast_grp = 0; | |
326 | props->max_mcast_qp_attach = 0; | |
327 | props->max_total_mcast_qp_attach = 0; | |
e3cf00d0 UM |
328 | /* Owned by Userspace |
329 | * max_qp_wr, max_sge, max_sge_rd, max_cqe */ | |
330 | mutex_unlock(&us_ibdev->usdev_lock); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
1fb7f897 | 335 | int usnic_ib_query_port(struct ib_device *ibdev, u32 port, |
e3cf00d0 UM |
336 | struct ib_port_attr *props) |
337 | { | |
338 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
e3cf00d0 UM |
339 | |
340 | usnic_dbg("\n"); | |
341 | ||
7be05753 | 342 | if (ib_get_eth_speed(ibdev, port, &props->active_speed, |
8036e90f | 343 | &props->active_width)) |
d4186194 | 344 | return -EINVAL; |
d4186194 | 345 | |
8036e90f PK |
346 | /* |
347 | * usdev_lock is acquired after (and not before) ib_get_eth_speed call | |
348 | * because acquiring rtnl_lock in ib_get_eth_speed, while holding | |
349 | * usdev_lock could lead to a deadlock. | |
350 | */ | |
351 | mutex_lock(&us_ibdev->usdev_lock); | |
c4550c63 | 352 | /* props being zeroed by the caller, avoid zeroing it here */ |
e3cf00d0 UM |
353 | |
354 | props->lid = 0; | |
355 | props->lmc = 1; | |
356 | props->sm_lid = 0; | |
357 | props->sm_sl = 0; | |
358 | ||
c7845bca | 359 | if (!us_ibdev->ufdev->link_up) { |
e3cf00d0 | 360 | props->state = IB_PORT_DOWN; |
72a7720f | 361 | props->phys_state = IB_PORT_PHYS_STATE_DISABLED; |
c7845bca UM |
362 | } else if (!us_ibdev->ufdev->inaddr) { |
363 | props->state = IB_PORT_INIT; | |
72a7720f KH |
364 | props->phys_state = |
365 | IB_PORT_PHYS_STATE_PORT_CONFIGURATION_TRAINING; | |
c7845bca UM |
366 | } else { |
367 | props->state = IB_PORT_ACTIVE; | |
72a7720f | 368 | props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; |
e3cf00d0 UM |
369 | } |
370 | ||
371 | props->port_cap_flags = 0; | |
372 | props->gid_tbl_len = 1; | |
e3cf00d0 UM |
373 | props->bad_pkey_cntr = 0; |
374 | props->qkey_viol_cntr = 0; | |
e3cf00d0 | 375 | props->max_mtu = IB_MTU_4096; |
8af94ac6 | 376 | props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); |
e3cf00d0 | 377 | /* Userspace will adjust for hdrs */ |
8af94ac6 | 378 | props->max_msg_sz = us_ibdev->ufdev->mtu; |
e3cf00d0 UM |
379 | props->max_vl_num = 1; |
380 | mutex_unlock(&us_ibdev->usdev_lock); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, | |
386 | int qp_attr_mask, | |
387 | struct ib_qp_init_attr *qp_init_attr) | |
388 | { | |
389 | struct usnic_ib_qp_grp *qp_grp; | |
390 | struct usnic_ib_vf *vf; | |
391 | int err; | |
392 | ||
393 | usnic_dbg("\n"); | |
394 | ||
395 | memset(qp_attr, 0, sizeof(*qp_attr)); | |
396 | memset(qp_init_attr, 0, sizeof(*qp_init_attr)); | |
397 | ||
398 | qp_grp = to_uqp_grp(qp); | |
399 | vf = qp_grp->vf; | |
400 | mutex_lock(&vf->pf->usdev_lock); | |
401 | usnic_dbg("\n"); | |
402 | qp_attr->qp_state = qp_grp->state; | |
403 | qp_attr->cur_qp_state = qp_grp->state; | |
404 | ||
405 | switch (qp_grp->ibqp.qp_type) { | |
406 | case IB_QPT_UD: | |
407 | qp_attr->qkey = 0; | |
408 | break; | |
409 | default: | |
410 | usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); | |
411 | err = -EINVAL; | |
412 | goto err_out; | |
413 | } | |
414 | ||
415 | mutex_unlock(&vf->pf->usdev_lock); | |
416 | return 0; | |
417 | ||
418 | err_out: | |
419 | mutex_unlock(&vf->pf->usdev_lock); | |
420 | return err; | |
421 | } | |
422 | ||
1fb7f897 | 423 | int usnic_ib_query_gid(struct ib_device *ibdev, u32 port, int index, |
e3cf00d0 UM |
424 | union ib_gid *gid) |
425 | { | |
426 | ||
427 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
428 | usnic_dbg("\n"); | |
429 | ||
430 | if (index > 1) | |
431 | return -EINVAL; | |
432 | ||
433 | mutex_lock(&us_ibdev->usdev_lock); | |
434 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); | |
c7845bca UM |
435 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
436 | &gid->raw[0]); | |
e3cf00d0 UM |
437 | mutex_unlock(&us_ibdev->usdev_lock); |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
ff23dfa1 | 442 | int usnic_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) |
e3cf00d0 | 443 | { |
21a428a0 | 444 | struct usnic_ib_pd *pd = to_upd(ibpd); |
e3cf00d0 | 445 | |
cc97c6d9 | 446 | pd->umem_pd = usnic_uiom_alloc_pd(ibpd->device->dev.parent); |
10f2d1cb DC |
447 | if (IS_ERR(pd->umem_pd)) |
448 | return PTR_ERR(pd->umem_pd); | |
e3cf00d0 | 449 | |
21a428a0 | 450 | return 0; |
e3cf00d0 UM |
451 | } |
452 | ||
91a7c58f | 453 | int usnic_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) |
e3cf00d0 | 454 | { |
e3cf00d0 | 455 | usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); |
91a7c58f | 456 | return 0; |
e3cf00d0 UM |
457 | } |
458 | ||
514aee66 LR |
459 | int usnic_ib_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr, |
460 | struct ib_udata *udata) | |
e3cf00d0 UM |
461 | { |
462 | int err; | |
463 | struct usnic_ib_dev *us_ibdev; | |
514aee66 | 464 | struct usnic_ib_qp_grp *qp_grp = to_uqp_grp(ibqp); |
89944450 SR |
465 | struct usnic_ib_ucontext *ucontext = rdma_udata_to_drv_context( |
466 | udata, struct usnic_ib_ucontext, ibucontext); | |
e3cf00d0 UM |
467 | int cq_cnt; |
468 | struct usnic_vnic_res_spec res_spec; | |
c7845bca | 469 | struct usnic_ib_create_qp_cmd cmd; |
8af94ac6 | 470 | struct usnic_transport_spec trans_spec; |
e3cf00d0 UM |
471 | |
472 | usnic_dbg("\n"); | |
473 | ||
514aee66 | 474 | us_ibdev = to_usdev(ibqp->device); |
e3cf00d0 | 475 | |
60093dc0 | 476 | if (init_attr->create_flags) |
514aee66 | 477 | return -EOPNOTSUPP; |
60093dc0 | 478 | |
c7845bca UM |
479 | err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); |
480 | if (err) { | |
481 | usnic_err("%s: cannot copy udata for create_qp\n", | |
9de69861 | 482 | dev_name(&us_ibdev->ib_dev.dev)); |
514aee66 | 483 | return -EINVAL; |
c7845bca UM |
484 | } |
485 | ||
486 | err = create_qp_validate_user_data(cmd); | |
487 | if (err) { | |
488 | usnic_err("%s: Failed to validate user data\n", | |
9de69861 | 489 | dev_name(&us_ibdev->ib_dev.dev)); |
514aee66 | 490 | return -EINVAL; |
c7845bca UM |
491 | } |
492 | ||
e3cf00d0 UM |
493 | if (init_attr->qp_type != IB_QPT_UD) { |
494 | usnic_err("%s asked to make a non-UD QP: %d\n", | |
9de69861 | 495 | dev_name(&us_ibdev->ib_dev.dev), init_attr->qp_type); |
514aee66 | 496 | return -EOPNOTSUPP; |
e3cf00d0 UM |
497 | } |
498 | ||
c7845bca | 499 | trans_spec = cmd.spec; |
e3cf00d0 | 500 | mutex_lock(&us_ibdev->usdev_lock); |
8af94ac6 UM |
501 | cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; |
502 | res_spec = min_transport_spec[trans_spec.trans_type]; | |
e3cf00d0 | 503 | usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); |
514aee66 LR |
504 | err = find_free_vf_and_create_qp_grp(ibqp, &trans_spec, &res_spec); |
505 | if (err) | |
e3cf00d0 | 506 | goto out_release_mutex; |
e3cf00d0 UM |
507 | |
508 | err = usnic_ib_fill_create_qp_resp(qp_grp, udata); | |
509 | if (err) { | |
510 | err = -EBUSY; | |
511 | goto out_release_qp_grp; | |
512 | } | |
513 | ||
514 | qp_grp->ctx = ucontext; | |
515 | list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); | |
516 | usnic_ib_log_vf(qp_grp->vf); | |
517 | mutex_unlock(&us_ibdev->usdev_lock); | |
514aee66 | 518 | return 0; |
e3cf00d0 UM |
519 | |
520 | out_release_qp_grp: | |
521 | qp_grp_destroy(qp_grp); | |
522 | out_release_mutex: | |
523 | mutex_unlock(&us_ibdev->usdev_lock); | |
514aee66 | 524 | return err; |
e3cf00d0 UM |
525 | } |
526 | ||
c4367a26 | 527 | int usnic_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) |
e3cf00d0 UM |
528 | { |
529 | struct usnic_ib_qp_grp *qp_grp; | |
530 | struct usnic_ib_vf *vf; | |
531 | ||
532 | usnic_dbg("\n"); | |
533 | ||
534 | qp_grp = to_uqp_grp(qp); | |
535 | vf = qp_grp->vf; | |
536 | mutex_lock(&vf->pf->usdev_lock); | |
537 | if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { | |
538 | usnic_err("Failed to move qp grp %u to reset\n", | |
539 | qp_grp->grp_id); | |
540 | } | |
541 | ||
542 | list_del(&qp_grp->link); | |
543 | qp_grp_destroy(qp_grp); | |
544 | mutex_unlock(&vf->pf->usdev_lock); | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
550 | int attr_mask, struct ib_udata *udata) | |
551 | { | |
552 | struct usnic_ib_qp_grp *qp_grp; | |
553 | int status; | |
554 | usnic_dbg("\n"); | |
555 | ||
26e990ba JG |
556 | if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS) |
557 | return -EOPNOTSUPP; | |
558 | ||
e3cf00d0 UM |
559 | qp_grp = to_uqp_grp(ibqp); |
560 | ||
e3cf00d0 | 561 | mutex_lock(&qp_grp->vf->pf->usdev_lock); |
89e5323c NE |
562 | if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) { |
563 | /* usnic devices only have one port */ | |
564 | status = -EINVAL; | |
565 | goto out_unlock; | |
566 | } | |
567 | if (attr_mask & IB_QP_STATE) { | |
568 | status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL); | |
e3cf00d0 | 569 | } else { |
89e5323c | 570 | usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask); |
e3cf00d0 UM |
571 | status = -EINVAL; |
572 | } | |
573 | ||
89e5323c | 574 | out_unlock: |
e3cf00d0 UM |
575 | mutex_unlock(&qp_grp->vf->pf->usdev_lock); |
576 | return status; | |
577 | } | |
578 | ||
e39afe3d LR |
579 | int usnic_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, |
580 | struct ib_udata *udata) | |
e3cf00d0 | 581 | { |
bcf4c1ea | 582 | if (attr->flags) |
1c407cb5 | 583 | return -EOPNOTSUPP; |
e3cf00d0 | 584 | |
e39afe3d | 585 | return 0; |
e3cf00d0 UM |
586 | } |
587 | ||
43d781b9 | 588 | int usnic_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata) |
e3cf00d0 | 589 | { |
43d781b9 | 590 | return 0; |
e3cf00d0 UM |
591 | } |
592 | ||
593 | struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, | |
594 | u64 virt_addr, int access_flags, | |
595 | struct ib_udata *udata) | |
596 | { | |
597 | struct usnic_ib_mr *mr; | |
598 | int err; | |
599 | ||
600 | usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, | |
601 | virt_addr, length); | |
602 | ||
603 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
59f65f49 JL |
604 | if (!mr) |
605 | return ERR_PTR(-ENOMEM); | |
e3cf00d0 UM |
606 | |
607 | mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, | |
608 | access_flags, 0); | |
609 | if (IS_ERR_OR_NULL(mr->umem)) { | |
6a54d9f9 | 610 | err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT; |
e3cf00d0 UM |
611 | goto err_free; |
612 | } | |
613 | ||
614 | mr->ibmr.lkey = mr->ibmr.rkey = 0; | |
615 | return &mr->ibmr; | |
616 | ||
617 | err_free: | |
618 | kfree(mr); | |
619 | return ERR_PTR(err); | |
620 | } | |
621 | ||
c4367a26 | 622 | int usnic_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) |
e3cf00d0 UM |
623 | { |
624 | struct usnic_ib_mr *mr = to_umr(ibmr); | |
625 | ||
626 | usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); | |
627 | ||
bdeacabd | 628 | usnic_uiom_reg_release(mr->umem); |
e3cf00d0 UM |
629 | kfree(mr); |
630 | return 0; | |
631 | } | |
632 | ||
a2a074ef | 633 | int usnic_ib_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) |
e3cf00d0 | 634 | { |
a2a074ef LR |
635 | struct ib_device *ibdev = uctx->device; |
636 | struct usnic_ib_ucontext *context = to_ucontext(uctx); | |
e3cf00d0 UM |
637 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); |
638 | usnic_dbg("\n"); | |
639 | ||
e3cf00d0 UM |
640 | INIT_LIST_HEAD(&context->qp_grp_list); |
641 | mutex_lock(&us_ibdev->usdev_lock); | |
642 | list_add_tail(&context->link, &us_ibdev->ctx_list); | |
643 | mutex_unlock(&us_ibdev->usdev_lock); | |
644 | ||
a2a074ef | 645 | return 0; |
e3cf00d0 UM |
646 | } |
647 | ||
a2a074ef | 648 | void usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) |
e3cf00d0 UM |
649 | { |
650 | struct usnic_ib_ucontext *context = to_uucontext(ibcontext); | |
651 | struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); | |
652 | usnic_dbg("\n"); | |
653 | ||
654 | mutex_lock(&us_ibdev->usdev_lock); | |
a2a074ef | 655 | WARN_ON_ONCE(!list_empty(&context->qp_grp_list)); |
e3cf00d0 UM |
656 | list_del(&context->link); |
657 | mutex_unlock(&us_ibdev->usdev_lock); | |
e3cf00d0 UM |
658 | } |
659 | ||
660 | int usnic_ib_mmap(struct ib_ucontext *context, | |
661 | struct vm_area_struct *vma) | |
662 | { | |
663 | struct usnic_ib_ucontext *uctx = to_ucontext(context); | |
664 | struct usnic_ib_dev *us_ibdev; | |
665 | struct usnic_ib_qp_grp *qp_grp; | |
666 | struct usnic_ib_vf *vf; | |
667 | struct vnic_dev_bar *bar; | |
668 | dma_addr_t bus_addr; | |
669 | unsigned int len; | |
670 | unsigned int vfid; | |
671 | ||
672 | usnic_dbg("\n"); | |
673 | ||
674 | us_ibdev = to_usdev(context->device); | |
1c71222e | 675 | vm_flags_set(vma, VM_IO); |
e3cf00d0 UM |
676 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
677 | vfid = vma->vm_pgoff; | |
678 | usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", | |
679 | vma->vm_pgoff, PAGE_SHIFT, vfid); | |
680 | ||
681 | mutex_lock(&us_ibdev->usdev_lock); | |
682 | list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { | |
683 | vf = qp_grp->vf; | |
684 | if (usnic_vnic_get_index(vf->vnic) == vfid) { | |
685 | bar = usnic_vnic_get_bar(vf->vnic, 0); | |
686 | if ((vma->vm_end - vma->vm_start) != bar->len) { | |
687 | usnic_err("Bar0 Len %lu - Request map %lu\n", | |
688 | bar->len, | |
689 | vma->vm_end - vma->vm_start); | |
690 | mutex_unlock(&us_ibdev->usdev_lock); | |
691 | return -EINVAL; | |
692 | } | |
693 | bus_addr = bar->bus_addr; | |
694 | len = bar->len; | |
695 | usnic_dbg("bus: %pa vaddr: %p size: %ld\n", | |
696 | &bus_addr, bar->vaddr, bar->len); | |
697 | mutex_unlock(&us_ibdev->usdev_lock); | |
698 | ||
699 | return remap_pfn_range(vma, | |
700 | vma->vm_start, | |
701 | bus_addr >> PAGE_SHIFT, | |
702 | len, vma->vm_page_prot); | |
703 | } | |
704 | } | |
705 | ||
706 | mutex_unlock(&us_ibdev->usdev_lock); | |
707 | usnic_err("No VF %u found\n", vfid); | |
708 | return -EINVAL; | |
709 | } |