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e3cf00d0 UM |
1 | /* |
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 | ||
37 | static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver) | |
38 | { | |
39 | *fw_ver = (u64) *fw_ver_str; | |
40 | } | |
41 | ||
42 | static 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; | |
8af94ac6 | 50 | struct usnic_ib_qp_grp_flow *default_flow; |
e3cf00d0 UM |
51 | 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; | |
e3cf00d0 UM |
73 | |
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 | ||
8af94ac6 UM |
116 | 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 | ||
e3cf00d0 UM |
120 | 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 | ||
129 | static struct usnic_ib_qp_grp* | |
130 | find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev, | |
131 | struct usnic_ib_pd *pd, | |
8af94ac6 | 132 | struct usnic_transport_spec *trans_spec, |
e3cf00d0 UM |
133 | 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 | ||
e3cf00d0 UM |
148 | 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, | |
8af94ac6 | 191 | trans_spec); |
e3cf00d0 UM |
192 | 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 | ||
201 | static 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 | ||
212 | static 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 | ||
c7845bca UM |
233 | static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) |
234 | { | |
235 | if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || | |
236 | cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) | |
237 | return -EINVAL; | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
e3cf00d0 UM |
242 | /* Start of ib callback functions */ |
243 | ||
244 | enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, | |
245 | u8 port_num) | |
246 | { | |
247 | return IB_LINK_LAYER_ETHERNET; | |
248 | } | |
249 | ||
250 | int usnic_ib_query_device(struct ib_device *ibdev, | |
251 | struct ib_device_attr *props) | |
252 | { | |
253 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
254 | union ib_gid gid; | |
255 | struct ethtool_drvinfo info; | |
256 | struct ethtool_cmd cmd; | |
257 | int qp_per_vf; | |
258 | ||
259 | usnic_dbg("\n"); | |
260 | mutex_lock(&us_ibdev->usdev_lock); | |
261 | us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); | |
262 | us_ibdev->netdev->ethtool_ops->get_settings(us_ibdev->netdev, &cmd); | |
263 | memset(props, 0, sizeof(*props)); | |
c7845bca UM |
264 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
265 | &gid.raw[0]); | |
e3cf00d0 UM |
266 | memcpy(&props->sys_image_guid, &gid.global.interface_id, |
267 | sizeof(gid.global.interface_id)); | |
268 | usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); | |
269 | props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; | |
270 | props->page_size_cap = USNIC_UIOM_PAGE_SIZE; | |
271 | props->vendor_id = PCI_VENDOR_ID_CISCO; | |
272 | props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; | |
273 | props->hw_ver = us_ibdev->pdev->subsystem_device; | |
274 | qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], | |
275 | us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); | |
276 | props->max_qp = qp_per_vf * | |
277 | atomic_read(&us_ibdev->vf_cnt.refcount); | |
278 | props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | | |
279 | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; | |
280 | props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * | |
281 | atomic_read(&us_ibdev->vf_cnt.refcount); | |
282 | props->max_pd = USNIC_UIOM_MAX_PD_CNT; | |
283 | props->max_mr = USNIC_UIOM_MAX_MR_CNT; | |
284 | props->local_ca_ack_delay = 0; | |
285 | props->max_pkeys = 0; | |
286 | props->atomic_cap = IB_ATOMIC_NONE; | |
287 | props->masked_atomic_cap = props->atomic_cap; | |
288 | props->max_qp_rd_atom = 0; | |
289 | props->max_qp_init_rd_atom = 0; | |
290 | props->max_res_rd_atom = 0; | |
291 | props->max_srq = 0; | |
292 | props->max_srq_wr = 0; | |
293 | props->max_srq_sge = 0; | |
294 | props->max_fast_reg_page_list_len = 0; | |
295 | props->max_mcast_grp = 0; | |
296 | props->max_mcast_qp_attach = 0; | |
297 | props->max_total_mcast_qp_attach = 0; | |
298 | props->max_map_per_fmr = 0; | |
299 | /* Owned by Userspace | |
300 | * max_qp_wr, max_sge, max_sge_rd, max_cqe */ | |
301 | mutex_unlock(&us_ibdev->usdev_lock); | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
306 | int usnic_ib_query_port(struct ib_device *ibdev, u8 port, | |
307 | struct ib_port_attr *props) | |
308 | { | |
309 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
310 | struct ethtool_cmd cmd; | |
311 | ||
312 | usnic_dbg("\n"); | |
313 | ||
314 | mutex_lock(&us_ibdev->usdev_lock); | |
315 | us_ibdev->netdev->ethtool_ops->get_settings(us_ibdev->netdev, &cmd); | |
316 | memset(props, 0, sizeof(*props)); | |
317 | ||
318 | props->lid = 0; | |
319 | props->lmc = 1; | |
320 | props->sm_lid = 0; | |
321 | props->sm_sl = 0; | |
322 | ||
c7845bca | 323 | if (!us_ibdev->ufdev->link_up) { |
e3cf00d0 UM |
324 | props->state = IB_PORT_DOWN; |
325 | props->phys_state = 3; | |
c7845bca UM |
326 | } else if (!us_ibdev->ufdev->inaddr) { |
327 | props->state = IB_PORT_INIT; | |
328 | props->phys_state = 4; | |
329 | } else { | |
330 | props->state = IB_PORT_ACTIVE; | |
331 | props->phys_state = 5; | |
e3cf00d0 UM |
332 | } |
333 | ||
334 | props->port_cap_flags = 0; | |
335 | props->gid_tbl_len = 1; | |
336 | props->pkey_tbl_len = 1; | |
337 | props->bad_pkey_cntr = 0; | |
338 | props->qkey_viol_cntr = 0; | |
339 | eth_speed_to_ib_speed(cmd.speed, &props->active_speed, | |
340 | &props->active_width); | |
341 | props->max_mtu = IB_MTU_4096; | |
8af94ac6 | 342 | props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); |
e3cf00d0 | 343 | /* Userspace will adjust for hdrs */ |
8af94ac6 | 344 | props->max_msg_sz = us_ibdev->ufdev->mtu; |
e3cf00d0 UM |
345 | props->max_vl_num = 1; |
346 | mutex_unlock(&us_ibdev->usdev_lock); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, | |
352 | int qp_attr_mask, | |
353 | struct ib_qp_init_attr *qp_init_attr) | |
354 | { | |
355 | struct usnic_ib_qp_grp *qp_grp; | |
356 | struct usnic_ib_vf *vf; | |
357 | int err; | |
358 | ||
359 | usnic_dbg("\n"); | |
360 | ||
361 | memset(qp_attr, 0, sizeof(*qp_attr)); | |
362 | memset(qp_init_attr, 0, sizeof(*qp_init_attr)); | |
363 | ||
364 | qp_grp = to_uqp_grp(qp); | |
365 | vf = qp_grp->vf; | |
366 | mutex_lock(&vf->pf->usdev_lock); | |
367 | usnic_dbg("\n"); | |
368 | qp_attr->qp_state = qp_grp->state; | |
369 | qp_attr->cur_qp_state = qp_grp->state; | |
370 | ||
371 | switch (qp_grp->ibqp.qp_type) { | |
372 | case IB_QPT_UD: | |
373 | qp_attr->qkey = 0; | |
374 | break; | |
375 | default: | |
376 | usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); | |
377 | err = -EINVAL; | |
378 | goto err_out; | |
379 | } | |
380 | ||
381 | mutex_unlock(&vf->pf->usdev_lock); | |
382 | return 0; | |
383 | ||
384 | err_out: | |
385 | mutex_unlock(&vf->pf->usdev_lock); | |
386 | return err; | |
387 | } | |
388 | ||
389 | int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index, | |
390 | union ib_gid *gid) | |
391 | { | |
392 | ||
393 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
394 | usnic_dbg("\n"); | |
395 | ||
396 | if (index > 1) | |
397 | return -EINVAL; | |
398 | ||
399 | mutex_lock(&us_ibdev->usdev_lock); | |
400 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); | |
c7845bca UM |
401 | usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, |
402 | &gid->raw[0]); | |
e3cf00d0 UM |
403 | mutex_unlock(&us_ibdev->usdev_lock); |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, | |
409 | u16 *pkey) | |
410 | { | |
411 | if (index > 1) | |
412 | return -EINVAL; | |
413 | ||
414 | *pkey = 0xffff; | |
415 | return 0; | |
416 | } | |
417 | ||
418 | struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev, | |
419 | struct ib_ucontext *context, | |
420 | struct ib_udata *udata) | |
421 | { | |
422 | struct usnic_ib_pd *pd; | |
423 | void *umem_pd; | |
424 | ||
425 | usnic_dbg("\n"); | |
426 | ||
427 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
428 | if (!pd) | |
429 | return ERR_PTR(-ENOMEM); | |
430 | ||
431 | umem_pd = pd->umem_pd = usnic_uiom_alloc_pd(); | |
432 | if (IS_ERR_OR_NULL(umem_pd)) { | |
433 | kfree(pd); | |
434 | return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM); | |
435 | } | |
436 | ||
437 | usnic_info("domain 0x%p allocated for context 0x%p and device %s\n", | |
438 | pd, context, ibdev->name); | |
439 | return &pd->ibpd; | |
440 | } | |
441 | ||
442 | int usnic_ib_dealloc_pd(struct ib_pd *pd) | |
443 | { | |
444 | usnic_info("freeing domain 0x%p\n", pd); | |
445 | ||
446 | usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); | |
447 | kfree(pd); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd, | |
452 | struct ib_qp_init_attr *init_attr, | |
453 | struct ib_udata *udata) | |
454 | { | |
455 | int err; | |
456 | struct usnic_ib_dev *us_ibdev; | |
457 | struct usnic_ib_qp_grp *qp_grp; | |
458 | struct usnic_ib_ucontext *ucontext; | |
459 | int cq_cnt; | |
460 | struct usnic_vnic_res_spec res_spec; | |
c7845bca | 461 | struct usnic_ib_create_qp_cmd cmd; |
8af94ac6 | 462 | struct usnic_transport_spec trans_spec; |
e3cf00d0 UM |
463 | |
464 | usnic_dbg("\n"); | |
465 | ||
466 | ucontext = to_uucontext(pd->uobject->context); | |
467 | us_ibdev = to_usdev(pd->device); | |
468 | ||
c7845bca UM |
469 | err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); |
470 | if (err) { | |
471 | usnic_err("%s: cannot copy udata for create_qp\n", | |
472 | us_ibdev->ib_dev.name); | |
473 | return ERR_PTR(-EINVAL); | |
474 | } | |
475 | ||
476 | err = create_qp_validate_user_data(cmd); | |
477 | if (err) { | |
478 | usnic_err("%s: Failed to validate user data\n", | |
479 | us_ibdev->ib_dev.name); | |
480 | return ERR_PTR(-EINVAL); | |
481 | } | |
482 | ||
e3cf00d0 UM |
483 | if (init_attr->qp_type != IB_QPT_UD) { |
484 | usnic_err("%s asked to make a non-UD QP: %d\n", | |
485 | us_ibdev->ib_dev.name, init_attr->qp_type); | |
486 | return ERR_PTR(-EINVAL); | |
487 | } | |
488 | ||
c7845bca | 489 | trans_spec = cmd.spec; |
e3cf00d0 | 490 | mutex_lock(&us_ibdev->usdev_lock); |
8af94ac6 UM |
491 | cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; |
492 | res_spec = min_transport_spec[trans_spec.trans_type]; | |
e3cf00d0 UM |
493 | usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); |
494 | qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd), | |
8af94ac6 | 495 | &trans_spec, |
e3cf00d0 UM |
496 | &res_spec); |
497 | if (IS_ERR_OR_NULL(qp_grp)) { | |
498 | err = (qp_grp ? PTR_ERR(qp_grp) : -ENOMEM); | |
499 | goto out_release_mutex; | |
500 | } | |
501 | ||
502 | err = usnic_ib_fill_create_qp_resp(qp_grp, udata); | |
503 | if (err) { | |
504 | err = -EBUSY; | |
505 | goto out_release_qp_grp; | |
506 | } | |
507 | ||
508 | qp_grp->ctx = ucontext; | |
509 | list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); | |
510 | usnic_ib_log_vf(qp_grp->vf); | |
511 | mutex_unlock(&us_ibdev->usdev_lock); | |
512 | return &qp_grp->ibqp; | |
513 | ||
514 | out_release_qp_grp: | |
515 | qp_grp_destroy(qp_grp); | |
516 | out_release_mutex: | |
517 | mutex_unlock(&us_ibdev->usdev_lock); | |
518 | return ERR_PTR(err); | |
519 | } | |
520 | ||
521 | int usnic_ib_destroy_qp(struct ib_qp *qp) | |
522 | { | |
523 | struct usnic_ib_qp_grp *qp_grp; | |
524 | struct usnic_ib_vf *vf; | |
525 | ||
526 | usnic_dbg("\n"); | |
527 | ||
528 | qp_grp = to_uqp_grp(qp); | |
529 | vf = qp_grp->vf; | |
530 | mutex_lock(&vf->pf->usdev_lock); | |
531 | if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { | |
532 | usnic_err("Failed to move qp grp %u to reset\n", | |
533 | qp_grp->grp_id); | |
534 | } | |
535 | ||
536 | list_del(&qp_grp->link); | |
537 | qp_grp_destroy(qp_grp); | |
538 | mutex_unlock(&vf->pf->usdev_lock); | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
544 | int attr_mask, struct ib_udata *udata) | |
545 | { | |
546 | struct usnic_ib_qp_grp *qp_grp; | |
547 | int status; | |
548 | usnic_dbg("\n"); | |
549 | ||
550 | qp_grp = to_uqp_grp(ibqp); | |
551 | ||
552 | /* TODO: Future Support All States */ | |
553 | mutex_lock(&qp_grp->vf->pf->usdev_lock); | |
554 | if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_INIT) { | |
8af94ac6 | 555 | status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_INIT, NULL); |
e3cf00d0 UM |
556 | } else if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_RTR) { |
557 | status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RTR, NULL); | |
558 | } else if ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_RTS) { | |
559 | status = usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RTS, NULL); | |
560 | } else { | |
561 | usnic_err("Unexpected combination mask: %u state: %u\n", | |
562 | attr_mask & IB_QP_STATE, attr->qp_state); | |
563 | status = -EINVAL; | |
564 | } | |
565 | ||
566 | mutex_unlock(&qp_grp->vf->pf->usdev_lock); | |
567 | return status; | |
568 | } | |
569 | ||
570 | struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, int entries, | |
571 | int vector, struct ib_ucontext *context, | |
572 | struct ib_udata *udata) | |
573 | { | |
574 | struct ib_cq *cq; | |
575 | ||
576 | usnic_dbg("\n"); | |
577 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); | |
578 | if (!cq) | |
579 | return ERR_PTR(-EBUSY); | |
580 | ||
581 | return cq; | |
582 | } | |
583 | ||
584 | int usnic_ib_destroy_cq(struct ib_cq *cq) | |
585 | { | |
586 | usnic_dbg("\n"); | |
587 | kfree(cq); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, | |
592 | u64 virt_addr, int access_flags, | |
593 | struct ib_udata *udata) | |
594 | { | |
595 | struct usnic_ib_mr *mr; | |
596 | int err; | |
597 | ||
598 | usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, | |
599 | virt_addr, length); | |
600 | ||
601 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
602 | if (IS_ERR_OR_NULL(mr)) | |
603 | return ERR_PTR(mr ? PTR_ERR(mr) : -ENOMEM); | |
604 | ||
605 | mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, | |
606 | access_flags, 0); | |
607 | if (IS_ERR_OR_NULL(mr->umem)) { | |
608 | err = (mr->umem) ? PTR_ERR(mr->umem) : -EFAULT; | |
609 | goto err_free; | |
610 | } | |
611 | ||
612 | mr->ibmr.lkey = mr->ibmr.rkey = 0; | |
613 | return &mr->ibmr; | |
614 | ||
615 | err_free: | |
616 | kfree(mr); | |
617 | return ERR_PTR(err); | |
618 | } | |
619 | ||
620 | int usnic_ib_dereg_mr(struct ib_mr *ibmr) | |
621 | { | |
622 | struct usnic_ib_mr *mr = to_umr(ibmr); | |
623 | ||
624 | usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); | |
625 | ||
626 | usnic_uiom_reg_release(mr->umem, ibmr->pd->uobject->context->closing); | |
627 | kfree(mr); | |
628 | return 0; | |
629 | } | |
630 | ||
631 | struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev, | |
632 | struct ib_udata *udata) | |
633 | { | |
634 | struct usnic_ib_ucontext *context; | |
635 | struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); | |
636 | usnic_dbg("\n"); | |
637 | ||
638 | context = kmalloc(sizeof(*context), GFP_KERNEL); | |
639 | if (!context) | |
640 | return ERR_PTR(-ENOMEM); | |
641 | ||
642 | INIT_LIST_HEAD(&context->qp_grp_list); | |
643 | mutex_lock(&us_ibdev->usdev_lock); | |
644 | list_add_tail(&context->link, &us_ibdev->ctx_list); | |
645 | mutex_unlock(&us_ibdev->usdev_lock); | |
646 | ||
647 | return &context->ibucontext; | |
648 | } | |
649 | ||
650 | int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) | |
651 | { | |
652 | struct usnic_ib_ucontext *context = to_uucontext(ibcontext); | |
653 | struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); | |
654 | usnic_dbg("\n"); | |
655 | ||
656 | mutex_lock(&us_ibdev->usdev_lock); | |
657 | BUG_ON(!list_empty(&context->qp_grp_list)); | |
658 | list_del(&context->link); | |
659 | mutex_unlock(&us_ibdev->usdev_lock); | |
660 | kfree(context); | |
661 | return 0; | |
662 | } | |
663 | ||
664 | int usnic_ib_mmap(struct ib_ucontext *context, | |
665 | struct vm_area_struct *vma) | |
666 | { | |
667 | struct usnic_ib_ucontext *uctx = to_ucontext(context); | |
668 | struct usnic_ib_dev *us_ibdev; | |
669 | struct usnic_ib_qp_grp *qp_grp; | |
670 | struct usnic_ib_vf *vf; | |
671 | struct vnic_dev_bar *bar; | |
672 | dma_addr_t bus_addr; | |
673 | unsigned int len; | |
674 | unsigned int vfid; | |
675 | ||
676 | usnic_dbg("\n"); | |
677 | ||
678 | us_ibdev = to_usdev(context->device); | |
679 | vma->vm_flags |= VM_IO; | |
680 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
681 | vfid = vma->vm_pgoff; | |
682 | usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", | |
683 | vma->vm_pgoff, PAGE_SHIFT, vfid); | |
684 | ||
685 | mutex_lock(&us_ibdev->usdev_lock); | |
686 | list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { | |
687 | vf = qp_grp->vf; | |
688 | if (usnic_vnic_get_index(vf->vnic) == vfid) { | |
689 | bar = usnic_vnic_get_bar(vf->vnic, 0); | |
690 | if ((vma->vm_end - vma->vm_start) != bar->len) { | |
691 | usnic_err("Bar0 Len %lu - Request map %lu\n", | |
692 | bar->len, | |
693 | vma->vm_end - vma->vm_start); | |
694 | mutex_unlock(&us_ibdev->usdev_lock); | |
695 | return -EINVAL; | |
696 | } | |
697 | bus_addr = bar->bus_addr; | |
698 | len = bar->len; | |
699 | usnic_dbg("bus: %pa vaddr: %p size: %ld\n", | |
700 | &bus_addr, bar->vaddr, bar->len); | |
701 | mutex_unlock(&us_ibdev->usdev_lock); | |
702 | ||
703 | return remap_pfn_range(vma, | |
704 | vma->vm_start, | |
705 | bus_addr >> PAGE_SHIFT, | |
706 | len, vma->vm_page_prot); | |
707 | } | |
708 | } | |
709 | ||
710 | mutex_unlock(&us_ibdev->usdev_lock); | |
711 | usnic_err("No VF %u found\n", vfid); | |
712 | return -EINVAL; | |
713 | } | |
714 | ||
715 | /* In ib callbacks section - Start of stub funcs */ | |
716 | struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd, | |
717 | struct ib_ah_attr *ah_attr) | |
718 | { | |
719 | usnic_dbg("\n"); | |
720 | return ERR_PTR(-EPERM); | |
721 | } | |
722 | ||
723 | int usnic_ib_destroy_ah(struct ib_ah *ah) | |
724 | { | |
725 | usnic_dbg("\n"); | |
726 | return -EINVAL; | |
727 | } | |
728 | ||
729 | int usnic_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, | |
730 | struct ib_send_wr **bad_wr) | |
731 | { | |
732 | usnic_dbg("\n"); | |
733 | return -EINVAL; | |
734 | } | |
735 | ||
736 | int usnic_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
737 | struct ib_recv_wr **bad_wr) | |
738 | { | |
739 | usnic_dbg("\n"); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries, | |
744 | struct ib_wc *wc) | |
745 | { | |
746 | usnic_dbg("\n"); | |
747 | return -EINVAL; | |
748 | } | |
749 | ||
750 | int usnic_ib_req_notify_cq(struct ib_cq *cq, | |
751 | enum ib_cq_notify_flags flags) | |
752 | { | |
753 | usnic_dbg("\n"); | |
754 | return -EINVAL; | |
755 | } | |
756 | ||
757 | struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
758 | { | |
759 | usnic_dbg("\n"); | |
760 | return ERR_PTR(-ENOMEM); | |
761 | } | |
762 | ||
763 | ||
764 | /* In ib callbacks section - End of stub funcs */ | |
765 | /* End of ib callbacks section */ |