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IB/core: Avoid leakage from kernel to user space
[deliverable/linux.git] / drivers / infiniband / hw / mlx5 / main.c
CommitLineData
e126ba97
EC		 1/*
2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
3 *
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 * OpenIB.org 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.
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 <asm-generic/kmap_types.h>
34#include <linux/module.h>
35#include <linux/init.h>
36#include <linux/errno.h>
37#include <linux/pci.h>
38#include <linux/dma-mapping.h>
39#include <linux/slab.h>
40#include <linux/io-mapping.h>
41#include <linux/sched.h>
42#include <rdma/ib_user_verbs.h>
43#include <rdma/ib_smi.h>
44#include <rdma/ib_umem.h>
45#include "user.h"
46#include "mlx5_ib.h"
47
48#define DRIVER_NAME "mlx5_ib"
169a1d85
AV		 49#define DRIVER_VERSION "2.2-1"
50#define DRIVER_RELDATE "Feb 2014"
e126ba97
EC		 51
52MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
53MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
54MODULE_LICENSE("Dual BSD/GPL");
55MODULE_VERSION(DRIVER_VERSION);
56
9603b61d
JM		 57static int deprecated_prof_sel = 2;
58module_param_named(prof_sel, deprecated_prof_sel, int, 0444);
59MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core");
e126ba97
EC		 60
61static char mlx5_version[] =
62 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
63 DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
64
e126ba97
EC		 65int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn)
66{
9603b61d 67 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table;
e126ba97
EC		 68 struct mlx5_eq *eq, *n;
69 int err = -ENOENT;
70
71 spin_lock(&table->lock);
72 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
73 if (eq->index == vector) {
74 *eqn = eq->eqn;
75 *irqn = eq->irqn;
76 err = 0;
77 break;
78 }
79 }
80 spin_unlock(&table->lock);
81
82 return err;
83}
84
85static int alloc_comp_eqs(struct mlx5_ib_dev *dev)
86{
9603b61d 87 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table;
ada9f5d0 88 char name[MLX5_MAX_EQ_NAME];
e126ba97
EC		 89 struct mlx5_eq *eq, *n;
90 int ncomp_vec;
91 int nent;
92 int err;
93 int i;
94
95 INIT_LIST_HEAD(&dev->eqs_list);
96 ncomp_vec = table->num_comp_vectors;
97 nent = MLX5_COMP_EQ_SIZE;
98 for (i = 0; i < ncomp_vec; i++) {
99 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
100 if (!eq) {
101 err = -ENOMEM;
102 goto clean;
103 }
104
ada9f5d0 105 snprintf(name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i);
9603b61d 106 err = mlx5_create_map_eq(dev->mdev, eq,
e126ba97 107 i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
9603b61d 108 name, &dev->mdev->priv.uuari.uars[0]);
e126ba97
EC		 109 if (err) {
110 kfree(eq);
111 goto clean;
112 }
113 mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
114 eq->index = i;
115 spin_lock(&table->lock);
116 list_add_tail(&eq->list, &dev->eqs_list);
117 spin_unlock(&table->lock);
118 }
119
120 dev->num_comp_vectors = ncomp_vec;
121 return 0;
122
123clean:
124 spin_lock(&table->lock);
125 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
126 list_del(&eq->list);
127 spin_unlock(&table->lock);
9603b61d 128 if (mlx5_destroy_unmap_eq(dev->mdev, eq))
e126ba97
EC		 129 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
130 kfree(eq);
131 spin_lock(&table->lock);
132 }
133 spin_unlock(&table->lock);
134 return err;
135}
136
137static void free_comp_eqs(struct mlx5_ib_dev *dev)
138{
9603b61d 139 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table;
e126ba97
EC		 140 struct mlx5_eq *eq, *n;
141
142 spin_lock(&table->lock);
143 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
144 list_del(&eq->list);
145 spin_unlock(&table->lock);
9603b61d 146 if (mlx5_destroy_unmap_eq(dev->mdev, eq))
e126ba97
EC		 147 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
148 kfree(eq);
149 spin_lock(&table->lock);
150 }
151 spin_unlock(&table->lock);
152}
153
154static int mlx5_ib_query_device(struct ib_device *ibdev,
155 struct ib_device_attr *props)
156{
157 struct mlx5_ib_dev *dev = to_mdev(ibdev);
158 struct ib_smp *in_mad = NULL;
159 struct ib_smp *out_mad = NULL;
160 int err = -ENOMEM;
161 int max_rq_sg;
162 int max_sq_sg;
163 u64 flags;
164
165 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
166 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
167 if (!in_mad || !out_mad)
168 goto out;
169
170 init_query_mad(in_mad);
171 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
172
173 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
174 if (err)
175 goto out;
176
177 memset(props, 0, sizeof(*props));
178
9603b61d
JM		 179 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
180 (fw_rev_min(dev->mdev) << 16) |
181 fw_rev_sub(dev->mdev);
e126ba97
EC		 182 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
183 IB_DEVICE_PORT_ACTIVE_EVENT |
184 IB_DEVICE_SYS_IMAGE_GUID |
1a4c3a3d 185 IB_DEVICE_RC_RNR_NAK_GEN;
9603b61d 186 flags = dev->mdev->caps.flags;
e126ba97
EC		 187 if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR)
188 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
189 if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR)
190 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
191 if (flags & MLX5_DEV_CAP_FLAG_APM)
192 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
193 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
194 if (flags & MLX5_DEV_CAP_FLAG_XRC)
195 props->device_cap_flags |= IB_DEVICE_XRC;
196 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
2dea9094
SG		 197 if (flags & MLX5_DEV_CAP_FLAG_SIG_HAND_OVER) {
198 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
199 /* At this stage no support for signature handover */
200 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
201 IB_PROT_T10DIF_TYPE_2 |
202 IB_PROT_T10DIF_TYPE_3;
203 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
204 IB_GUARD_T10DIF_CSUM;
205 }
f360d88a
EC		 206 if (flags & MLX5_DEV_CAP_FLAG_BLOCK_MCAST)
207 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
e126ba97
EC		 208
209 props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) &
210 0xffffff;
211 props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30));
212 props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32));
213 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
214
215 props->max_mr_size = ~0ull;
9603b61d
JM		 216 props->page_size_cap = dev->mdev->caps.min_page_sz;
217 props->max_qp = 1 << dev->mdev->caps.log_max_qp;
218 props->max_qp_wr = dev->mdev->caps.max_wqes;
219 max_rq_sg = dev->mdev->caps.max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg);
220 max_sq_sg = (dev->mdev->caps.max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) /
e126ba97
EC		 221 sizeof(struct mlx5_wqe_data_seg);
222 props->max_sge = min(max_rq_sg, max_sq_sg);
9603b61d
JM		 223 props->max_cq = 1 << dev->mdev->caps.log_max_cq;
224 props->max_cqe = dev->mdev->caps.max_cqes - 1;
225 props->max_mr = 1 << dev->mdev->caps.log_max_mkey;
226 props->max_pd = 1 << dev->mdev->caps.log_max_pd;
227 props->max_qp_rd_atom = dev->mdev->caps.max_ra_req_qp;
228 props->max_qp_init_rd_atom = dev->mdev->caps.max_ra_res_qp;
e126ba97 229 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
9603b61d
JM		 230 props->max_srq = 1 << dev->mdev->caps.log_max_srq;
231 props->max_srq_wr = dev->mdev->caps.max_srq_wqes - 1;
e126ba97
EC		 232 props->max_srq_sge = max_rq_sg - 1;
233 props->max_fast_reg_page_list_len = (unsigned int)-1;
9603b61d 234 props->local_ca_ack_delay = dev->mdev->caps.local_ca_ack_delay;
81bea28f
EC		 235 props->atomic_cap = IB_ATOMIC_NONE;
236 props->masked_atomic_cap = IB_ATOMIC_NONE;
e126ba97 237 props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
9603b61d
JM		 238 props->max_mcast_grp = 1 << dev->mdev->caps.log_max_mcg;
239 props->max_mcast_qp_attach = dev->mdev->caps.max_qp_mcg;
e126ba97
EC		 240 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
241 props->max_mcast_grp;
242 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
243
244out:
245 kfree(in_mad);
246 kfree(out_mad);
247
248 return err;
249}
250
251int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
252 struct ib_port_attr *props)
253{
254 struct mlx5_ib_dev *dev = to_mdev(ibdev);
255 struct ib_smp *in_mad = NULL;
256 struct ib_smp *out_mad = NULL;
257 int ext_active_speed;
258 int err = -ENOMEM;
259
9603b61d 260 if (port < 1 || port > dev->mdev->caps.num_ports) {
e126ba97
EC		 261 mlx5_ib_warn(dev, "invalid port number %d\n", port);
262 return -EINVAL;
263 }
264
265 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
266 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
267 if (!in_mad || !out_mad)
268 goto out;
269
270 memset(props, 0, sizeof(*props));
271
272 init_query_mad(in_mad);
273 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
274 in_mad->attr_mod = cpu_to_be32(port);
275
276 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
277 if (err) {
278 mlx5_ib_warn(dev, "err %d\n", err);
279 goto out;
280 }
281
282
283 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
284 props->lmc = out_mad->data[34] & 0x7;
285 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
286 props->sm_sl = out_mad->data[36] & 0xf;
287 props->state = out_mad->data[32] & 0xf;
288 props->phys_state = out_mad->data[33] >> 4;
289 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
290 props->gid_tbl_len = out_mad->data[50];
9603b61d
JM		 291 props->max_msg_sz = 1 << to_mdev(ibdev)->mdev->caps.log_max_msg;
292 props->pkey_tbl_len = to_mdev(ibdev)->mdev->caps.port[port - 1].pkey_table_len;
e126ba97
EC		 293 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
294 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
295 props->active_width = out_mad->data[31] & 0xf;
296 props->active_speed = out_mad->data[35] >> 4;
297 props->max_mtu = out_mad->data[41] & 0xf;
298 props->active_mtu = out_mad->data[36] >> 4;
299 props->subnet_timeout = out_mad->data[51] & 0x1f;
300 props->max_vl_num = out_mad->data[37] >> 4;
301 props->init_type_reply = out_mad->data[41] >> 4;
302
303 /* Check if extended speeds (EDR/FDR/...) are supported */
304 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
305 ext_active_speed = out_mad->data[62] >> 4;
306
307 switch (ext_active_speed) {
308 case 1:
309 props->active_speed = 16; /* FDR */
310 break;
311 case 2:
312 props->active_speed = 32; /* EDR */
313 break;
314 }
315 }
316
317 /* If reported active speed is QDR, check if is FDR-10 */
318 if (props->active_speed == 4) {
9603b61d 319 if (dev->mdev->caps.ext_port_cap[port - 1] &
e126ba97
EC		 320 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
321 init_query_mad(in_mad);
322 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
323 in_mad->attr_mod = cpu_to_be32(port);
324
325 err = mlx5_MAD_IFC(dev, 1, 1, port,
326 NULL, NULL, in_mad, out_mad);
327 if (err)
328 goto out;
329
330 /* Checking LinkSpeedActive for FDR-10 */
331 if (out_mad->data[15] & 0x1)
332 props->active_speed = 8;
333 }
334 }
335
336out:
337 kfree(in_mad);
338 kfree(out_mad);
339
340 return err;
341}
342
343static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
344 union ib_gid *gid)
345{
346 struct ib_smp *in_mad = NULL;
347 struct ib_smp *out_mad = NULL;
348 int err = -ENOMEM;
349
350 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
351 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
352 if (!in_mad || !out_mad)
353 goto out;
354
355 init_query_mad(in_mad);
356 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
357 in_mad->attr_mod = cpu_to_be32(port);
358
359 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
360 if (err)
361 goto out;
362
363 memcpy(gid->raw, out_mad->data + 8, 8);
364
365 init_query_mad(in_mad);
366 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
367 in_mad->attr_mod = cpu_to_be32(index / 8);
368
369 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
370 if (err)
371 goto out;
372
373 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
374
375out:
376 kfree(in_mad);
377 kfree(out_mad);
378 return err;
379}
380
381static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
382 u16 *pkey)
383{
384 struct ib_smp *in_mad = NULL;
385 struct ib_smp *out_mad = NULL;
386 int err = -ENOMEM;
387
388 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
389 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
390 if (!in_mad || !out_mad)
391 goto out;
392
393 init_query_mad(in_mad);
394 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
395 in_mad->attr_mod = cpu_to_be32(index / 32);
396
397 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
398 if (err)
399 goto out;
400
401 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
402
403out:
404 kfree(in_mad);
405 kfree(out_mad);
406 return err;
407}
408
409struct mlx5_reg_node_desc {
410 u8 desc[64];
411};
412
413static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
414 struct ib_device_modify *props)
415{
416 struct mlx5_ib_dev *dev = to_mdev(ibdev);
417 struct mlx5_reg_node_desc in;
418 struct mlx5_reg_node_desc out;
419 int err;
420
421 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
422 return -EOPNOTSUPP;
423
424 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
425 return 0;
426
427 /*
428 * If possible, pass node desc to FW, so it can generate
429 * a 144 trap. If cmd fails, just ignore.
430 */
431 memcpy(&in, props->node_desc, 64);
9603b61d 432 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
e126ba97
EC		 433 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
434 if (err)
435 return err;
436
437 memcpy(ibdev->node_desc, props->node_desc, 64);
438
439 return err;
440}
441
442static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
443 struct ib_port_modify *props)
444{
445 struct mlx5_ib_dev *dev = to_mdev(ibdev);
446 struct ib_port_attr attr;
447 u32 tmp;
448 int err;
449
450 mutex_lock(&dev->cap_mask_mutex);
451
452 err = mlx5_ib_query_port(ibdev, port, &attr);
453 if (err)
454 goto out;
455
456 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
457 ~props->clr_port_cap_mask;
458
9603b61d 459 err = mlx5_set_port_caps(dev->mdev, port, tmp);
e126ba97
EC		 460
461out:
462 mutex_unlock(&dev->cap_mask_mutex);
463 return err;
464}
465
466static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
467 struct ib_udata *udata)
468{
469 struct mlx5_ib_dev *dev = to_mdev(ibdev);
78c0f98c 470 struct mlx5_ib_alloc_ucontext_req_v2 req;
e126ba97
EC		 471 struct mlx5_ib_alloc_ucontext_resp resp;
472 struct mlx5_ib_ucontext *context;
473 struct mlx5_uuar_info *uuari;
474 struct mlx5_uar *uars;
c1be5232 475 int gross_uuars;
e126ba97 476 int num_uars;
78c0f98c 477 int ver;
e126ba97
EC		 478 int uuarn;
479 int err;
480 int i;
f241e749 481 size_t reqlen;
e126ba97
EC		 482
483 if (!dev->ib_active)
484 return ERR_PTR(-EAGAIN);
485
78c0f98c
EC		 486 memset(&req, 0, sizeof(req));
487 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr);
488 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
489 ver = 0;
490 else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2))
491 ver = 2;
492 else
493 return ERR_PTR(-EINVAL);
494
495 err = ib_copy_from_udata(&req, udata, reqlen);
e126ba97
EC		 496 if (err)
497 return ERR_PTR(err);
498
78c0f98c
EC		 499 if (req.flags || req.reserved)
500 return ERR_PTR(-EINVAL);
501
e126ba97
EC		 502 if (req.total_num_uuars > MLX5_MAX_UUARS)
503 return ERR_PTR(-ENOMEM);
504
505 if (req.total_num_uuars == 0)
506 return ERR_PTR(-EINVAL);
507
c1be5232
EC		 508 req.total_num_uuars = ALIGN(req.total_num_uuars,
509 MLX5_NON_FP_BF_REGS_PER_PAGE);
e126ba97
EC		 510 if (req.num_low_latency_uuars > req.total_num_uuars - 1)
511 return ERR_PTR(-EINVAL);
512
c1be5232
EC		 513 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE;
514 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE;
9603b61d
JM		 515 resp.qp_tab_size = 1 << dev->mdev->caps.log_max_qp;
516 resp.bf_reg_size = dev->mdev->caps.bf_reg_size;
e126ba97 517 resp.cache_line_size = L1_CACHE_BYTES;
9603b61d
JM		 518 resp.max_sq_desc_sz = dev->mdev->caps.max_sq_desc_sz;
519 resp.max_rq_desc_sz = dev->mdev->caps.max_rq_desc_sz;
520 resp.max_send_wqebb = dev->mdev->caps.max_wqes;
521 resp.max_recv_wr = dev->mdev->caps.max_wqes;
522 resp.max_srq_recv_wr = dev->mdev->caps.max_srq_wqes;
e126ba97
EC		 523
524 context = kzalloc(sizeof(*context), GFP_KERNEL);
525 if (!context)
526 return ERR_PTR(-ENOMEM);
527
528 uuari = &context->uuari;
529 mutex_init(&uuari->lock);
530 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
531 if (!uars) {
532 err = -ENOMEM;
533 goto out_ctx;
534 }
535
c1be5232 536 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars),
e126ba97
EC		 537 sizeof(*uuari->bitmap),
538 GFP_KERNEL);
539 if (!uuari->bitmap) {
540 err = -ENOMEM;
541 goto out_uar_ctx;
542 }
543 /*
544 * clear all fast path uuars
545 */
c1be5232 546 for (i = 0; i < gross_uuars; i++) {
e126ba97
EC		 547 uuarn = i & 3;
548 if (uuarn == 2 || uuarn == 3)
549 set_bit(i, uuari->bitmap);
550 }
551
c1be5232 552 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL);
e126ba97
EC		 553 if (!uuari->count) {
554 err = -ENOMEM;
555 goto out_bitmap;
556 }
557
558 for (i = 0; i < num_uars; i++) {
9603b61d 559 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index);
e126ba97
EC		 560 if (err)
561 goto out_count;
562 }
563
564 INIT_LIST_HEAD(&context->db_page_list);
565 mutex_init(&context->db_page_mutex);
566
567 resp.tot_uuars = req.total_num_uuars;
9603b61d 568 resp.num_ports = dev->mdev->caps.num_ports;
92b0ca7c
DC		 569 err = ib_copy_to_udata(udata, &resp,
570 sizeof(resp) - sizeof(resp.reserved));
e126ba97
EC		 571 if (err)
572 goto out_uars;
573
78c0f98c 574 uuari->ver = ver;
e126ba97
EC		 575 uuari->num_low_latency_uuars = req.num_low_latency_uuars;
576 uuari->uars = uars;
577 uuari->num_uars = num_uars;
578 return &context->ibucontext;
579
580out_uars:
581 for (i--; i >= 0; i--)
9603b61d 582 mlx5_cmd_free_uar(dev->mdev, uars[i].index);
e126ba97
EC		 583out_count:
584 kfree(uuari->count);
585
586out_bitmap:
587 kfree(uuari->bitmap);
588
589out_uar_ctx:
590 kfree(uars);
591
592out_ctx:
593 kfree(context);
594 return ERR_PTR(err);
595}
596
597static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
598{
599 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
600 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
601 struct mlx5_uuar_info *uuari = &context->uuari;
602 int i;
603
604 for (i = 0; i < uuari->num_uars; i++) {
9603b61d 605 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
e126ba97
EC		 606 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
607 }
608
609 kfree(uuari->count);
610 kfree(uuari->bitmap);
611 kfree(uuari->uars);
612 kfree(context);
613
614 return 0;
615}
616
617static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
618{
9603b61d 619 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index;
e126ba97
EC		 620}
621
622static int get_command(unsigned long offset)
623{
624 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
625}
626
627static int get_arg(unsigned long offset)
628{
629 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
630}
631
632static int get_index(unsigned long offset)
633{
634 return get_arg(offset);
635}
636
637static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
638{
639 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
640 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
641 struct mlx5_uuar_info *uuari = &context->uuari;
642 unsigned long command;
643 unsigned long idx;
644 phys_addr_t pfn;
645
646 command = get_command(vma->vm_pgoff);
647 switch (command) {
648 case MLX5_IB_MMAP_REGULAR_PAGE:
649 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
650 return -EINVAL;
651
652 idx = get_index(vma->vm_pgoff);
653 pfn = uar_index2pfn(dev, uuari->uars[idx].index);
654 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
655 (unsigned long long)pfn);
656
657 if (idx >= uuari->num_uars)
658 return -EINVAL;
659
660 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
661 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
662 PAGE_SIZE, vma->vm_page_prot))
663 return -EAGAIN;
664
665 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
666 vma->vm_start,
667 (unsigned long long)pfn << PAGE_SHIFT);
668 break;
669
670 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
671 return -ENOSYS;
672
673 default:
674 return -EINVAL;
675 }
676
677 return 0;
678}
679
680static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
681{
682 struct mlx5_create_mkey_mbox_in *in;
683 struct mlx5_mkey_seg *seg;
684 struct mlx5_core_mr mr;
685 int err;
686
687 in = kzalloc(sizeof(*in), GFP_KERNEL);
688 if (!in)
689 return -ENOMEM;
690
691 seg = &in->seg;
692 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA;
693 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
694 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
695 seg->start_addr = 0;
696
9603b61d 697 err = mlx5_core_create_mkey(dev->mdev, &mr, in, sizeof(*in),
746b5583 698 NULL, NULL, NULL);
e126ba97
EC		 699 if (err) {
700 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
701 goto err_in;
702 }
703
704 kfree(in);
705 *key = mr.key;
706
707 return 0;
708
709err_in:
710 kfree(in);
711
712 return err;
713}
714
715static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key)
716{
717 struct mlx5_core_mr mr;
718 int err;
719
720 memset(&mr, 0, sizeof(mr));
721 mr.key = key;
9603b61d 722 err = mlx5_core_destroy_mkey(dev->mdev, &mr);
e126ba97
EC		 723 if (err)
724 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key);
725}
726
727static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
728 struct ib_ucontext *context,
729 struct ib_udata *udata)
730{
731 struct mlx5_ib_alloc_pd_resp resp;
732 struct mlx5_ib_pd *pd;
733 int err;
734
735 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
736 if (!pd)
737 return ERR_PTR(-ENOMEM);
738
9603b61d 739 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
e126ba97
EC		 740 if (err) {
741 kfree(pd);
742 return ERR_PTR(err);
743 }
744
745 if (context) {
746 resp.pdn = pd->pdn;
747 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
9603b61d 748 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
e126ba97
EC		 749 kfree(pd);
750 return ERR_PTR(-EFAULT);
751 }
752 } else {
753 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn);
754 if (err) {
9603b61d 755 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
e126ba97
EC		 756 kfree(pd);
757 return ERR_PTR(err);
758 }
759 }
760
761 return &pd->ibpd;
762}
763
764static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
765{
766 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
767 struct mlx5_ib_pd *mpd = to_mpd(pd);
768
769 if (!pd->uobject)
770 free_pa_mkey(mdev, mpd->pa_lkey);
771
9603b61d 772 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
e126ba97
EC		 773 kfree(mpd);
774
775 return 0;
776}
777
778static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
779{
780 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
781 int err;
782
9603b61d 783 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
e126ba97
EC		 784 if (err)
785 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
786 ibqp->qp_num, gid->raw);
787
788 return err;
789}
790
791static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
792{
793 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
794 int err;
795
9603b61d 796 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
e126ba97
EC		 797 if (err)
798 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
799 ibqp->qp_num, gid->raw);
800
801 return err;
802}
803
804static int init_node_data(struct mlx5_ib_dev *dev)
805{
806 struct ib_smp *in_mad = NULL;
807 struct ib_smp *out_mad = NULL;
808 int err = -ENOMEM;
809
810 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
811 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
812 if (!in_mad || !out_mad)
813 goto out;
814
815 init_query_mad(in_mad);
816 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
817
818 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
819 if (err)
820 goto out;
821
822 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
823
824 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
825
826 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
827 if (err)
828 goto out;
829
9603b61d 830 dev->mdev->rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32));
e126ba97
EC		 831 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
832
833out:
834 kfree(in_mad);
835 kfree(out_mad);
836 return err;
837}
838
839static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
840 char *buf)
841{
842 struct mlx5_ib_dev *dev =
843 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
844
9603b61d 845 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
e126ba97
EC		 846}
847
848static ssize_t show_reg_pages(struct device *device,
849 struct device_attribute *attr, char *buf)
850{
851 struct mlx5_ib_dev *dev =
852 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
853
9603b61d 854 return sprintf(buf, "%d\n", dev->mdev->priv.reg_pages);
e126ba97
EC		 855}
856
857static ssize_t show_hca(struct device *device, struct device_attribute *attr,
858 char *buf)
859{
860 struct mlx5_ib_dev *dev =
861 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
9603b61d 862 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
e126ba97
EC		 863}
864
865static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
866 char *buf)
867{
868 struct mlx5_ib_dev *dev =
869 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
9603b61d
JM		 870 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev),
871 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
e126ba97
EC		 872}
873
874static ssize_t show_rev(struct device *device, struct device_attribute *attr,
875 char *buf)
876{
877 struct mlx5_ib_dev *dev =
878 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
9603b61d 879 return sprintf(buf, "%x\n", dev->mdev->rev_id);
e126ba97
EC		 880}
881
882static ssize_t show_board(struct device *device, struct device_attribute *attr,
883 char *buf)
884{
885 struct mlx5_ib_dev *dev =
886 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
887 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
9603b61d 888 dev->mdev->board_id);
e126ba97
EC		 889}
890
891static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
892static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
893static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
894static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
895static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
896static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
897
898static struct device_attribute *mlx5_class_attributes[] = {
899 &dev_attr_hw_rev,
900 &dev_attr_fw_ver,
901 &dev_attr_hca_type,
902 &dev_attr_board_id,
903 &dev_attr_fw_pages,
904 &dev_attr_reg_pages,
905};
906
9603b61d 907static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
4d2f9bbb 908 enum mlx5_dev_event event, unsigned long param)
e126ba97 909{
9603b61d 910 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
e126ba97 911 struct ib_event ibev;
9603b61d 912
e126ba97
EC		 913 u8 port = 0;
914
915 switch (event) {
916 case MLX5_DEV_EVENT_SYS_ERROR:
917 ibdev->ib_active = false;
918 ibev.event = IB_EVENT_DEVICE_FATAL;
919 break;
920
921 case MLX5_DEV_EVENT_PORT_UP:
922 ibev.event = IB_EVENT_PORT_ACTIVE;
4d2f9bbb 923 port = (u8)param;
e126ba97
EC		 924 break;
925
926 case MLX5_DEV_EVENT_PORT_DOWN:
927 ibev.event = IB_EVENT_PORT_ERR;
4d2f9bbb 928 port = (u8)param;
e126ba97
EC		 929 break;
930
931 case MLX5_DEV_EVENT_PORT_INITIALIZED:
932 /* not used by ULPs */
933 return;
934
935 case MLX5_DEV_EVENT_LID_CHANGE:
936 ibev.event = IB_EVENT_LID_CHANGE;
4d2f9bbb 937 port = (u8)param;
e126ba97
EC		 938 break;
939
940 case MLX5_DEV_EVENT_PKEY_CHANGE:
941 ibev.event = IB_EVENT_PKEY_CHANGE;
4d2f9bbb 942 port = (u8)param;
e126ba97
EC		 943 break;
944
945 case MLX5_DEV_EVENT_GUID_CHANGE:
946 ibev.event = IB_EVENT_GID_CHANGE;
4d2f9bbb 947 port = (u8)param;
e126ba97
EC		 948 break;
949
950 case MLX5_DEV_EVENT_CLIENT_REREG:
951 ibev.event = IB_EVENT_CLIENT_REREGISTER;
4d2f9bbb 952 port = (u8)param;
e126ba97
EC		 953 break;
954 }
955
956 ibev.device = &ibdev->ib_dev;
957 ibev.element.port_num = port;
958
a0c84c32
EC		 959 if (port < 1 || port > ibdev->num_ports) {
960 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
961 return;
962 }
963
e126ba97
EC		 964 if (ibdev->ib_active)
965 ib_dispatch_event(&ibev);
966}
967
968static void get_ext_port_caps(struct mlx5_ib_dev *dev)
969{
970 int port;
971
9603b61d 972 for (port = 1; port <= dev->mdev->caps.num_ports; port++)
e126ba97
EC		 973 mlx5_query_ext_port_caps(dev, port);
974}
975
976static int get_port_caps(struct mlx5_ib_dev *dev)
977{
978 struct ib_device_attr *dprops = NULL;
979 struct ib_port_attr *pprops = NULL;
980 int err = 0;
981 int port;
982
983 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
984 if (!pprops)
985 goto out;
986
987 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
988 if (!dprops)
989 goto out;
990
991 err = mlx5_ib_query_device(&dev->ib_dev, dprops);
992 if (err) {
993 mlx5_ib_warn(dev, "query_device failed %d\n", err);
994 goto out;
995 }
996
9603b61d 997 for (port = 1; port <= dev->mdev->caps.num_ports; port++) {
e126ba97
EC		 998 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
999 if (err) {
1000 mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err);
1001 break;
1002 }
9603b61d
JM		 1003 dev->mdev->caps.port[port - 1].pkey_table_len = dprops->max_pkeys;
1004 dev->mdev->caps.port[port - 1].gid_table_len = pprops->gid_tbl_len;
e126ba97
EC		 1005 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
1006 dprops->max_pkeys, pprops->gid_tbl_len);
1007 }
1008
1009out:
1010 kfree(pprops);
1011 kfree(dprops);
1012
1013 return err;
1014}
1015
1016static void destroy_umrc_res(struct mlx5_ib_dev *dev)
1017{
1018 int err;
1019
1020 err = mlx5_mr_cache_cleanup(dev);
1021 if (err)
1022 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
1023
1024 mlx5_ib_destroy_qp(dev->umrc.qp);
1025 ib_destroy_cq(dev->umrc.cq);
1026 ib_dereg_mr(dev->umrc.mr);
1027 ib_dealloc_pd(dev->umrc.pd);
1028}
1029
1030enum {
1031 MAX_UMR_WR = 128,
1032};
1033
1034static int create_umr_res(struct mlx5_ib_dev *dev)
1035{
1036 struct ib_qp_init_attr *init_attr = NULL;
1037 struct ib_qp_attr *attr = NULL;
1038 struct ib_pd *pd;
1039 struct ib_cq *cq;
1040 struct ib_qp *qp;
1041 struct ib_mr *mr;
1042 int ret;
1043
1044 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1045 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1046 if (!attr || !init_attr) {
1047 ret = -ENOMEM;
1048 goto error_0;
1049 }
1050
1051 pd = ib_alloc_pd(&dev->ib_dev);
1052 if (IS_ERR(pd)) {
1053 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
1054 ret = PTR_ERR(pd);
1055 goto error_0;
1056 }
1057
1058 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
1059 if (IS_ERR(mr)) {
1060 mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n");
1061 ret = PTR_ERR(mr);
1062 goto error_1;
1063 }
1064
1065 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128,
1066 0);
1067 if (IS_ERR(cq)) {
1068 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
1069 ret = PTR_ERR(cq);
1070 goto error_2;
1071 }
1072 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
1073
1074 init_attr->send_cq = cq;
1075 init_attr->recv_cq = cq;
1076 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
1077 init_attr->cap.max_send_wr = MAX_UMR_WR;
1078 init_attr->cap.max_send_sge = 1;
1079 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
1080 init_attr->port_num = 1;
1081 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
1082 if (IS_ERR(qp)) {
1083 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
1084 ret = PTR_ERR(qp);
1085 goto error_3;
1086 }
1087 qp->device = &dev->ib_dev;
1088 qp->real_qp = qp;
1089 qp->uobject = NULL;
1090 qp->qp_type = MLX5_IB_QPT_REG_UMR;
1091
1092 attr->qp_state = IB_QPS_INIT;
1093 attr->port_num = 1;
1094 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
1095 IB_QP_PORT, NULL);
1096 if (ret) {
1097 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
1098 goto error_4;
1099 }
1100
1101 memset(attr, 0, sizeof(*attr));
1102 attr->qp_state = IB_QPS_RTR;
1103 attr->path_mtu = IB_MTU_256;
1104
1105 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1106 if (ret) {
1107 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
1108 goto error_4;
1109 }
1110
1111 memset(attr, 0, sizeof(*attr));
1112 attr->qp_state = IB_QPS_RTS;
1113 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1114 if (ret) {
1115 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
1116 goto error_4;
1117 }
1118
1119 dev->umrc.qp = qp;
1120 dev->umrc.cq = cq;
1121 dev->umrc.mr = mr;
1122 dev->umrc.pd = pd;
1123
1124 sema_init(&dev->umrc.sem, MAX_UMR_WR);
1125 ret = mlx5_mr_cache_init(dev);
1126 if (ret) {
1127 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
1128 goto error_4;
1129 }
1130
1131 kfree(attr);
1132 kfree(init_attr);
1133
1134 return 0;
1135
1136error_4:
1137 mlx5_ib_destroy_qp(qp);
1138
1139error_3:
1140 ib_destroy_cq(cq);
1141
1142error_2:
1143 ib_dereg_mr(mr);
1144
1145error_1:
1146 ib_dealloc_pd(pd);
1147
1148error_0:
1149 kfree(attr);
1150 kfree(init_attr);
1151 return ret;
1152}
1153
1154static int create_dev_resources(struct mlx5_ib_resources *devr)
1155{
1156 struct ib_srq_init_attr attr;
1157 struct mlx5_ib_dev *dev;
1158 int ret = 0;
1159
1160 dev = container_of(devr, struct mlx5_ib_dev, devr);
1161
1162 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
1163 if (IS_ERR(devr->p0)) {
1164 ret = PTR_ERR(devr->p0);
1165 goto error0;
1166 }
1167 devr->p0->device = &dev->ib_dev;
1168 devr->p0->uobject = NULL;
1169 atomic_set(&devr->p0->usecnt, 0);
1170
1171 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL);
1172 if (IS_ERR(devr->c0)) {
1173 ret = PTR_ERR(devr->c0);
1174 goto error1;
1175 }
1176 devr->c0->device = &dev->ib_dev;
1177 devr->c0->uobject = NULL;
1178 devr->c0->comp_handler = NULL;
1179 devr->c0->event_handler = NULL;
1180 devr->c0->cq_context = NULL;
1181 atomic_set(&devr->c0->usecnt, 0);
1182
1183 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1184 if (IS_ERR(devr->x0)) {
1185 ret = PTR_ERR(devr->x0);
1186 goto error2;
1187 }
1188 devr->x0->device = &dev->ib_dev;
1189 devr->x0->inode = NULL;
1190 atomic_set(&devr->x0->usecnt, 0);
1191 mutex_init(&devr->x0->tgt_qp_mutex);
1192 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
1193
1194 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1195 if (IS_ERR(devr->x1)) {
1196 ret = PTR_ERR(devr->x1);
1197 goto error3;
1198 }
1199 devr->x1->device = &dev->ib_dev;
1200 devr->x1->inode = NULL;
1201 atomic_set(&devr->x1->usecnt, 0);
1202 mutex_init(&devr->x1->tgt_qp_mutex);
1203 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
1204
1205 memset(&attr, 0, sizeof(attr));
1206 attr.attr.max_sge = 1;
1207 attr.attr.max_wr = 1;
1208 attr.srq_type = IB_SRQT_XRC;
1209 attr.ext.xrc.cq = devr->c0;
1210 attr.ext.xrc.xrcd = devr->x0;
1211
1212 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
1213 if (IS_ERR(devr->s0)) {
1214 ret = PTR_ERR(devr->s0);
1215 goto error4;
1216 }
1217 devr->s0->device = &dev->ib_dev;
1218 devr->s0->pd = devr->p0;
1219 devr->s0->uobject = NULL;
1220 devr->s0->event_handler = NULL;
1221 devr->s0->srq_context = NULL;
1222 devr->s0->srq_type = IB_SRQT_XRC;
1223 devr->s0->ext.xrc.xrcd = devr->x0;
1224 devr->s0->ext.xrc.cq = devr->c0;
1225 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
1226 atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
1227 atomic_inc(&devr->p0->usecnt);
1228 atomic_set(&devr->s0->usecnt, 0);
1229
1230 return 0;
1231
1232error4:
1233 mlx5_ib_dealloc_xrcd(devr->x1);
1234error3:
1235 mlx5_ib_dealloc_xrcd(devr->x0);
1236error2:
1237 mlx5_ib_destroy_cq(devr->c0);
1238error1:
1239 mlx5_ib_dealloc_pd(devr->p0);
1240error0:
1241 return ret;
1242}
1243
1244static void destroy_dev_resources(struct mlx5_ib_resources *devr)
1245{
1246 mlx5_ib_destroy_srq(devr->s0);
1247 mlx5_ib_dealloc_xrcd(devr->x0);
1248 mlx5_ib_dealloc_xrcd(devr->x1);
1249 mlx5_ib_destroy_cq(devr->c0);
1250 mlx5_ib_dealloc_pd(devr->p0);
1251}
1252
9603b61d 1253static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
e126ba97 1254{
e126ba97
EC		 1255 struct mlx5_ib_dev *dev;
1256 int err;
1257 int i;
1258
1259 printk_once(KERN_INFO "%s", mlx5_version);
1260
1261 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
1262 if (!dev)
9603b61d 1263 return NULL;
e126ba97 1264
9603b61d 1265 dev->mdev = mdev;
e126ba97
EC		 1266
1267 err = get_port_caps(dev);
1268 if (err)
9603b61d 1269 goto err_dealloc;
e126ba97
EC		 1270
1271 get_ext_port_caps(dev);
1272
1273 err = alloc_comp_eqs(dev);
1274 if (err)
9603b61d 1275 goto err_dealloc;
e126ba97
EC		 1276
1277 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
1278
1279 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
1280 dev->ib_dev.owner = THIS_MODULE;
1281 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1282 dev->ib_dev.local_dma_lkey = mdev->caps.reserved_lkey;
1283 dev->num_ports = mdev->caps.num_ports;
1284 dev->ib_dev.phys_port_cnt = dev->num_ports;
1285 dev->ib_dev.num_comp_vectors = dev->num_comp_vectors;
1286 dev->ib_dev.dma_device = &mdev->pdev->dev;
1287
1288 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
1289 dev->ib_dev.uverbs_cmd_mask =
1290 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1291 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1292 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1293 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1294 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1295 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1296 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1297 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1298 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1299 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1300 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1301 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1302 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1303 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1304 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1305 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1306 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1307 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1308 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1309 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1310 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1311 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1312 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1313
1314 dev->ib_dev.query_device = mlx5_ib_query_device;
1315 dev->ib_dev.query_port = mlx5_ib_query_port;
1316 dev->ib_dev.query_gid = mlx5_ib_query_gid;
1317 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
1318 dev->ib_dev.modify_device = mlx5_ib_modify_device;
1319 dev->ib_dev.modify_port = mlx5_ib_modify_port;
1320 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
1321 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
1322 dev->ib_dev.mmap = mlx5_ib_mmap;
1323 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
1324 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
1325 dev->ib_dev.create_ah = mlx5_ib_create_ah;
1326 dev->ib_dev.query_ah = mlx5_ib_query_ah;
1327 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
1328 dev->ib_dev.create_srq = mlx5_ib_create_srq;
1329 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
1330 dev->ib_dev.query_srq = mlx5_ib_query_srq;
1331 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
1332 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
1333 dev->ib_dev.create_qp = mlx5_ib_create_qp;
1334 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
1335 dev->ib_dev.query_qp = mlx5_ib_query_qp;
1336 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
1337 dev->ib_dev.post_send = mlx5_ib_post_send;
1338 dev->ib_dev.post_recv = mlx5_ib_post_recv;
1339 dev->ib_dev.create_cq = mlx5_ib_create_cq;
1340 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
1341 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
1342 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
1343 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
1344 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
1345 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
1346 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
1347 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
3121e3c4 1348 dev->ib_dev.destroy_mr = mlx5_ib_destroy_mr;
e126ba97
EC		 1349 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
1350 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
1351 dev->ib_dev.process_mad = mlx5_ib_process_mad;
3121e3c4 1352 dev->ib_dev.create_mr = mlx5_ib_create_mr;
e126ba97
EC		 1353 dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr;
1354 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
1355 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
d5436ba0 1356 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
e126ba97
EC		 1357
1358 if (mdev->caps.flags & MLX5_DEV_CAP_FLAG_XRC) {
1359 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
1360 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
1361 dev->ib_dev.uverbs_cmd_mask |=
1362 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1363 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1364 }
1365
1366 err = init_node_data(dev);
1367 if (err)
1368 goto err_eqs;
1369
1370 mutex_init(&dev->cap_mask_mutex);
1371 spin_lock_init(&dev->mr_lock);
1372
1373 err = create_dev_resources(&dev->devr);
1374 if (err)
1375 goto err_eqs;
1376
281d1a92
WY		 1377 err = ib_register_device(&dev->ib_dev, NULL);
1378 if (err)
e126ba97
EC		 1379 goto err_rsrc;
1380
1381 err = create_umr_res(dev);
1382 if (err)
1383 goto err_dev;
1384
1385 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
281d1a92
WY		 1386 err = device_create_file(&dev->ib_dev.dev,
1387 mlx5_class_attributes[i]);
1388 if (err)
e126ba97
EC		 1389 goto err_umrc;
1390 }
1391
1392 dev->ib_active = true;
1393
9603b61d 1394 return dev;
e126ba97
EC		 1395
1396err_umrc:
1397 destroy_umrc_res(dev);
1398
1399err_dev:
1400 ib_unregister_device(&dev->ib_dev);
1401
1402err_rsrc:
1403 destroy_dev_resources(&dev->devr);
1404
1405err_eqs:
1406 free_comp_eqs(dev);
1407
9603b61d 1408err_dealloc:
e126ba97
EC		 1409 ib_dealloc_device((struct ib_device *)dev);
1410
9603b61d 1411 return NULL;
e126ba97
EC		 1412}
1413
9603b61d 1414static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
e126ba97 1415{
9603b61d 1416 struct mlx5_ib_dev *dev = context;
e126ba97 1417 ib_unregister_device(&dev->ib_dev);
eefd56e5 1418 destroy_umrc_res(dev);
e126ba97
EC		 1419 destroy_dev_resources(&dev->devr);
1420 free_comp_eqs(dev);
e126ba97
EC		 1421 ib_dealloc_device(&dev->ib_dev);
1422}
1423
9603b61d
JM		 1424static struct mlx5_interface mlx5_ib_interface = {
1425 .add = mlx5_ib_add,
1426 .remove = mlx5_ib_remove,
1427 .event = mlx5_ib_event,
e126ba97
EC		 1428};
1429
1430static int __init mlx5_ib_init(void)
1431{
9603b61d
JM		 1432 if (deprecated_prof_sel != 2)
1433 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n");
1434
1435 return mlx5_register_interface(&mlx5_ib_interface);
e126ba97
EC		 1436}
1437
1438static void __exit mlx5_ib_cleanup(void)
1439{
9603b61d 1440 mlx5_unregister_interface(&mlx5_ib_interface);
e126ba97
EC		 1441}
1442
1443module_init(mlx5_ib_init);
1444module_exit(mlx5_ib_cleanup);
Linux kernel - Deliverables
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