Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox...
[sfrench/cifs-2.6.git] / drivers / infiniband / hw / mlx5 / devx.c
1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /*
3  * Copyright (c) 2018, Mellanox Technologies inc.  All rights reserved.
4  */
5
6 #include <rdma/ib_user_verbs.h>
7 #include <rdma/ib_verbs.h>
8 #include <rdma/uverbs_types.h>
9 #include <rdma/uverbs_ioctl.h>
10 #include <rdma/mlx5_user_ioctl_cmds.h>
11 #include <rdma/ib_umem.h>
12 #include <linux/mlx5/driver.h>
13 #include <linux/mlx5/fs.h>
14 #include "mlx5_ib.h"
15
16 #define UVERBS_MODULE_NAME mlx5_ib
17 #include <rdma/uverbs_named_ioctl.h>
18
19 #define MLX5_MAX_DESTROY_INBOX_SIZE_DW MLX5_ST_SZ_DW(delete_fte_in)
20 struct devx_obj {
21         struct mlx5_core_dev    *mdev;
22         u32                     obj_id;
23         u32                     dinlen; /* destroy inbox length */
24         u32                     dinbox[MLX5_MAX_DESTROY_INBOX_SIZE_DW];
25 };
26
27 struct devx_umem {
28         struct mlx5_core_dev            *mdev;
29         struct ib_umem                  *umem;
30         u32                             page_offset;
31         int                             page_shift;
32         int                             ncont;
33         u32                             dinlen;
34         u32                             dinbox[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)];
35 };
36
37 struct devx_umem_reg_cmd {
38         void                            *in;
39         u32                             inlen;
40         u32                             out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
41 };
42
43 static struct mlx5_ib_ucontext *devx_ufile2uctx(struct ib_uverbs_file *file)
44 {
45         return to_mucontext(ib_uverbs_get_ucontext(file));
46 }
47
48 int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
49 {
50         u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {0};
51         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0};
52         u64 general_obj_types;
53         void *hdr;
54         int err;
55
56         hdr = MLX5_ADDR_OF(create_uctx_in, in, hdr);
57
58         general_obj_types = MLX5_CAP_GEN_64(dev->mdev, general_obj_types);
59         if (!(general_obj_types & MLX5_GENERAL_OBJ_TYPES_CAP_UCTX) ||
60             !(general_obj_types & MLX5_GENERAL_OBJ_TYPES_CAP_UMEM))
61                 return -EINVAL;
62
63         if (!capable(CAP_NET_RAW))
64                 return -EPERM;
65
66         MLX5_SET(general_obj_in_cmd_hdr, hdr, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
67         MLX5_SET(general_obj_in_cmd_hdr, hdr, obj_type, MLX5_OBJ_TYPE_UCTX);
68
69         err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
70         if (err)
71                 return err;
72
73         context->devx_uid = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
74         return 0;
75 }
76
77 void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev,
78                           struct mlx5_ib_ucontext *context)
79 {
80         u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {0};
81         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0};
82
83         MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
84         MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_OBJ_TYPE_UCTX);
85         MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, context->devx_uid);
86
87         mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
88 }
89
90 bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type)
91 {
92         struct devx_obj *devx_obj = obj;
93         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
94
95         switch (opcode) {
96         case MLX5_CMD_OP_DESTROY_TIR:
97                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
98                 *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
99                                     obj_id);
100                 return true;
101
102         case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
103                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
104                 *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
105                                     table_id);
106                 return true;
107         default:
108                 return false;
109         }
110 }
111
112 static int devx_is_valid_obj_id(struct devx_obj *obj, const void *in)
113 {
114         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
115         u32 obj_id;
116
117         switch (opcode) {
118         case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
119         case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
120                 obj_id = MLX5_GET(general_obj_in_cmd_hdr, in, obj_id);
121                 break;
122         case MLX5_CMD_OP_QUERY_MKEY:
123                 obj_id = MLX5_GET(query_mkey_in, in, mkey_index);
124                 break;
125         case MLX5_CMD_OP_QUERY_CQ:
126                 obj_id = MLX5_GET(query_cq_in, in, cqn);
127                 break;
128         case MLX5_CMD_OP_MODIFY_CQ:
129                 obj_id = MLX5_GET(modify_cq_in, in, cqn);
130                 break;
131         case MLX5_CMD_OP_QUERY_SQ:
132                 obj_id = MLX5_GET(query_sq_in, in, sqn);
133                 break;
134         case MLX5_CMD_OP_MODIFY_SQ:
135                 obj_id = MLX5_GET(modify_sq_in, in, sqn);
136                 break;
137         case MLX5_CMD_OP_QUERY_RQ:
138                 obj_id = MLX5_GET(query_rq_in, in, rqn);
139                 break;
140         case MLX5_CMD_OP_MODIFY_RQ:
141                 obj_id = MLX5_GET(modify_rq_in, in, rqn);
142                 break;
143         case MLX5_CMD_OP_QUERY_RMP:
144                 obj_id = MLX5_GET(query_rmp_in, in, rmpn);
145                 break;
146         case MLX5_CMD_OP_MODIFY_RMP:
147                 obj_id = MLX5_GET(modify_rmp_in, in, rmpn);
148                 break;
149         case MLX5_CMD_OP_QUERY_RQT:
150                 obj_id = MLX5_GET(query_rqt_in, in, rqtn);
151                 break;
152         case MLX5_CMD_OP_MODIFY_RQT:
153                 obj_id = MLX5_GET(modify_rqt_in, in, rqtn);
154                 break;
155         case MLX5_CMD_OP_QUERY_TIR:
156                 obj_id = MLX5_GET(query_tir_in, in, tirn);
157                 break;
158         case MLX5_CMD_OP_MODIFY_TIR:
159                 obj_id = MLX5_GET(modify_tir_in, in, tirn);
160                 break;
161         case MLX5_CMD_OP_QUERY_TIS:
162                 obj_id = MLX5_GET(query_tis_in, in, tisn);
163                 break;
164         case MLX5_CMD_OP_MODIFY_TIS:
165                 obj_id = MLX5_GET(modify_tis_in, in, tisn);
166                 break;
167         case MLX5_CMD_OP_QUERY_FLOW_TABLE:
168                 obj_id = MLX5_GET(query_flow_table_in, in, table_id);
169                 break;
170         case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
171                 obj_id = MLX5_GET(modify_flow_table_in, in, table_id);
172                 break;
173         case MLX5_CMD_OP_QUERY_FLOW_GROUP:
174                 obj_id = MLX5_GET(query_flow_group_in, in, group_id);
175                 break;
176         case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
177                 obj_id = MLX5_GET(query_fte_in, in, flow_index);
178                 break;
179         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
180                 obj_id = MLX5_GET(set_fte_in, in, flow_index);
181                 break;
182         case MLX5_CMD_OP_QUERY_Q_COUNTER:
183                 obj_id = MLX5_GET(query_q_counter_in, in, counter_set_id);
184                 break;
185         case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
186                 obj_id = MLX5_GET(query_flow_counter_in, in, flow_counter_id);
187                 break;
188         case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
189                 obj_id = MLX5_GET(general_obj_in_cmd_hdr, in, obj_id);
190                 break;
191         case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
192                 obj_id = MLX5_GET(query_scheduling_element_in, in,
193                                   scheduling_element_id);
194                 break;
195         case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
196                 obj_id = MLX5_GET(modify_scheduling_element_in, in,
197                                   scheduling_element_id);
198                 break;
199         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
200                 obj_id = MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
201                 break;
202         case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
203                 obj_id = MLX5_GET(query_l2_table_entry_in, in, table_index);
204                 break;
205         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
206                 obj_id = MLX5_GET(set_l2_table_entry_in, in, table_index);
207                 break;
208         case MLX5_CMD_OP_QUERY_QP:
209                 obj_id = MLX5_GET(query_qp_in, in, qpn);
210                 break;
211         case MLX5_CMD_OP_RST2INIT_QP:
212                 obj_id = MLX5_GET(rst2init_qp_in, in, qpn);
213                 break;
214         case MLX5_CMD_OP_INIT2RTR_QP:
215                 obj_id = MLX5_GET(init2rtr_qp_in, in, qpn);
216                 break;
217         case MLX5_CMD_OP_RTR2RTS_QP:
218                 obj_id = MLX5_GET(rtr2rts_qp_in, in, qpn);
219                 break;
220         case MLX5_CMD_OP_RTS2RTS_QP:
221                 obj_id = MLX5_GET(rts2rts_qp_in, in, qpn);
222                 break;
223         case MLX5_CMD_OP_SQERR2RTS_QP:
224                 obj_id = MLX5_GET(sqerr2rts_qp_in, in, qpn);
225                 break;
226         case MLX5_CMD_OP_2ERR_QP:
227                 obj_id = MLX5_GET(qp_2err_in, in, qpn);
228                 break;
229         case MLX5_CMD_OP_2RST_QP:
230                 obj_id = MLX5_GET(qp_2rst_in, in, qpn);
231                 break;
232         case MLX5_CMD_OP_QUERY_DCT:
233                 obj_id = MLX5_GET(query_dct_in, in, dctn);
234                 break;
235         case MLX5_CMD_OP_QUERY_XRQ:
236                 obj_id = MLX5_GET(query_xrq_in, in, xrqn);
237                 break;
238         case MLX5_CMD_OP_QUERY_XRC_SRQ:
239                 obj_id = MLX5_GET(query_xrc_srq_in, in, xrc_srqn);
240                 break;
241         case MLX5_CMD_OP_ARM_XRC_SRQ:
242                 obj_id = MLX5_GET(arm_xrc_srq_in, in, xrc_srqn);
243                 break;
244         case MLX5_CMD_OP_QUERY_SRQ:
245                 obj_id = MLX5_GET(query_srq_in, in, srqn);
246                 break;
247         case MLX5_CMD_OP_ARM_RQ:
248                 obj_id = MLX5_GET(arm_rq_in, in, srq_number);
249                 break;
250         case MLX5_CMD_OP_DRAIN_DCT:
251         case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
252                 obj_id = MLX5_GET(drain_dct_in, in, dctn);
253                 break;
254         case MLX5_CMD_OP_ARM_XRQ:
255                 obj_id = MLX5_GET(arm_xrq_in, in, xrqn);
256                 break;
257         default:
258                 return false;
259         }
260
261         if (obj_id == obj->obj_id)
262                 return true;
263
264         return false;
265 }
266
267 static bool devx_is_obj_create_cmd(const void *in)
268 {
269         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
270
271         switch (opcode) {
272         case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
273         case MLX5_CMD_OP_CREATE_MKEY:
274         case MLX5_CMD_OP_CREATE_CQ:
275         case MLX5_CMD_OP_ALLOC_PD:
276         case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
277         case MLX5_CMD_OP_CREATE_RMP:
278         case MLX5_CMD_OP_CREATE_SQ:
279         case MLX5_CMD_OP_CREATE_RQ:
280         case MLX5_CMD_OP_CREATE_RQT:
281         case MLX5_CMD_OP_CREATE_TIR:
282         case MLX5_CMD_OP_CREATE_TIS:
283         case MLX5_CMD_OP_ALLOC_Q_COUNTER:
284         case MLX5_CMD_OP_CREATE_FLOW_TABLE:
285         case MLX5_CMD_OP_CREATE_FLOW_GROUP:
286         case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
287         case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
288         case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
289         case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
290         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
291         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
292         case MLX5_CMD_OP_CREATE_QP:
293         case MLX5_CMD_OP_CREATE_SRQ:
294         case MLX5_CMD_OP_CREATE_XRC_SRQ:
295         case MLX5_CMD_OP_CREATE_DCT:
296         case MLX5_CMD_OP_CREATE_XRQ:
297         case MLX5_CMD_OP_ATTACH_TO_MCG:
298         case MLX5_CMD_OP_ALLOC_XRCD:
299                 return true;
300         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
301         {
302                 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
303                 if (op_mod == 0)
304                         return true;
305                 return false;
306         }
307         default:
308                 return false;
309         }
310 }
311
312 static bool devx_is_obj_modify_cmd(const void *in)
313 {
314         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
315
316         switch (opcode) {
317         case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
318         case MLX5_CMD_OP_MODIFY_CQ:
319         case MLX5_CMD_OP_MODIFY_RMP:
320         case MLX5_CMD_OP_MODIFY_SQ:
321         case MLX5_CMD_OP_MODIFY_RQ:
322         case MLX5_CMD_OP_MODIFY_RQT:
323         case MLX5_CMD_OP_MODIFY_TIR:
324         case MLX5_CMD_OP_MODIFY_TIS:
325         case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
326         case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
327         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
328         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
329         case MLX5_CMD_OP_RST2INIT_QP:
330         case MLX5_CMD_OP_INIT2RTR_QP:
331         case MLX5_CMD_OP_RTR2RTS_QP:
332         case MLX5_CMD_OP_RTS2RTS_QP:
333         case MLX5_CMD_OP_SQERR2RTS_QP:
334         case MLX5_CMD_OP_2ERR_QP:
335         case MLX5_CMD_OP_2RST_QP:
336         case MLX5_CMD_OP_ARM_XRC_SRQ:
337         case MLX5_CMD_OP_ARM_RQ:
338         case MLX5_CMD_OP_DRAIN_DCT:
339         case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
340         case MLX5_CMD_OP_ARM_XRQ:
341                 return true;
342         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
343         {
344                 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
345
346                 if (op_mod == 1)
347                         return true;
348                 return false;
349         }
350         default:
351                 return false;
352         }
353 }
354
355 static bool devx_is_obj_query_cmd(const void *in)
356 {
357         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
358
359         switch (opcode) {
360         case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
361         case MLX5_CMD_OP_QUERY_MKEY:
362         case MLX5_CMD_OP_QUERY_CQ:
363         case MLX5_CMD_OP_QUERY_RMP:
364         case MLX5_CMD_OP_QUERY_SQ:
365         case MLX5_CMD_OP_QUERY_RQ:
366         case MLX5_CMD_OP_QUERY_RQT:
367         case MLX5_CMD_OP_QUERY_TIR:
368         case MLX5_CMD_OP_QUERY_TIS:
369         case MLX5_CMD_OP_QUERY_Q_COUNTER:
370         case MLX5_CMD_OP_QUERY_FLOW_TABLE:
371         case MLX5_CMD_OP_QUERY_FLOW_GROUP:
372         case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
373         case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
374         case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
375         case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
376         case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
377         case MLX5_CMD_OP_QUERY_QP:
378         case MLX5_CMD_OP_QUERY_SRQ:
379         case MLX5_CMD_OP_QUERY_XRC_SRQ:
380         case MLX5_CMD_OP_QUERY_DCT:
381         case MLX5_CMD_OP_QUERY_XRQ:
382                 return true;
383         default:
384                 return false;
385         }
386 }
387
388 static bool devx_is_general_cmd(void *in)
389 {
390         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
391
392         switch (opcode) {
393         case MLX5_CMD_OP_QUERY_HCA_CAP:
394         case MLX5_CMD_OP_QUERY_VPORT_STATE:
395         case MLX5_CMD_OP_QUERY_ADAPTER:
396         case MLX5_CMD_OP_QUERY_ISSI:
397         case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
398         case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
399         case MLX5_CMD_OP_QUERY_VNIC_ENV:
400         case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
401         case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
402         case MLX5_CMD_OP_NOP:
403         case MLX5_CMD_OP_QUERY_CONG_STATUS:
404         case MLX5_CMD_OP_QUERY_CONG_PARAMS:
405         case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
406                 return true;
407         default:
408                 return false;
409         }
410 }
411
412 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)(
413         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
414 {
415         struct mlx5_ib_ucontext *c;
416         struct mlx5_ib_dev *dev;
417         int user_vector;
418         int dev_eqn;
419         unsigned int irqn;
420         int err;
421
422         if (uverbs_copy_from(&user_vector, attrs,
423                              MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC))
424                 return -EFAULT;
425
426         c = devx_ufile2uctx(file);
427         if (IS_ERR(c))
428                 return PTR_ERR(c);
429         dev = to_mdev(c->ibucontext.device);
430
431         err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn);
432         if (err < 0)
433                 return err;
434
435         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
436                            &dev_eqn, sizeof(dev_eqn)))
437                 return -EFAULT;
438
439         return 0;
440 }
441
442 /*
443  *Security note:
444  * The hardware protection mechanism works like this: Each device object that
445  * is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in
446  * the device specification manual) upon its creation. Then upon doorbell,
447  * hardware fetches the object context for which the doorbell was rang, and
448  * validates that the UAR through which the DB was rang matches the UAR ID
449  * of the object.
450  * If no match the doorbell is silently ignored by the hardware. Of course,
451  * the user cannot ring a doorbell on a UAR that was not mapped to it.
452  * Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command
453  * mailboxes (except tagging them with UID), we expose to the user its UAR
454  * ID, so it can embed it in these objects in the expected specification
455  * format. So the only thing the user can do is hurt itself by creating a
456  * QP/SQ/CQ with a UAR ID other than his, and then in this case other users
457  * may ring a doorbell on its objects.
458  * The consequence of that will be that another user can schedule a QP/SQ
459  * of the buggy user for execution (just insert it to the hardware schedule
460  * queue or arm its CQ for event generation), no further harm is expected.
461  */
462 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)(
463         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
464 {
465         struct mlx5_ib_ucontext *c;
466         struct mlx5_ib_dev *dev;
467         u32 user_idx;
468         s32 dev_idx;
469
470         c = devx_ufile2uctx(file);
471         if (IS_ERR(c))
472                 return PTR_ERR(c);
473         dev = to_mdev(c->ibucontext.device);
474
475         if (uverbs_copy_from(&user_idx, attrs,
476                              MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX))
477                 return -EFAULT;
478
479         dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true);
480         if (dev_idx < 0)
481                 return dev_idx;
482
483         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
484                            &dev_idx, sizeof(dev_idx)))
485                 return -EFAULT;
486
487         return 0;
488 }
489
490 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)(
491         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
492 {
493         struct mlx5_ib_ucontext *c;
494         struct mlx5_ib_dev *dev;
495         void *cmd_in = uverbs_attr_get_alloced_ptr(
496                 attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN);
497         int cmd_out_len = uverbs_attr_get_len(attrs,
498                                         MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT);
499         void *cmd_out;
500         int err;
501
502         c = devx_ufile2uctx(file);
503         if (IS_ERR(c))
504                 return PTR_ERR(c);
505         dev = to_mdev(c->ibucontext.device);
506
507         if (!c->devx_uid)
508                 return -EPERM;
509
510         /* Only white list of some general HCA commands are allowed for this method. */
511         if (!devx_is_general_cmd(cmd_in))
512                 return -EINVAL;
513
514         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
515         if (IS_ERR(cmd_out))
516                 return PTR_ERR(cmd_out);
517
518         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
519         err = mlx5_cmd_exec(dev->mdev, cmd_in,
520                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN),
521                             cmd_out, cmd_out_len);
522         if (err)
523                 return err;
524
525         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out,
526                               cmd_out_len);
527 }
528
529 static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
530                                        u32 *dinlen,
531                                        u32 *obj_id)
532 {
533         u16 obj_type = MLX5_GET(general_obj_in_cmd_hdr, in, obj_type);
534         u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid);
535
536         *obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
537         *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr);
538
539         MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id);
540         MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid);
541
542         switch (MLX5_GET(general_obj_in_cmd_hdr, in, opcode)) {
543         case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
544                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
545                 MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, obj_type);
546                 break;
547
548         case MLX5_CMD_OP_CREATE_MKEY:
549                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_MKEY);
550                 break;
551         case MLX5_CMD_OP_CREATE_CQ:
552                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
553                 break;
554         case MLX5_CMD_OP_ALLOC_PD:
555                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_PD);
556                 break;
557         case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
558                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
559                          MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
560                 break;
561         case MLX5_CMD_OP_CREATE_RMP:
562                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RMP);
563                 break;
564         case MLX5_CMD_OP_CREATE_SQ:
565                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SQ);
566                 break;
567         case MLX5_CMD_OP_CREATE_RQ:
568                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQ);
569                 break;
570         case MLX5_CMD_OP_CREATE_RQT:
571                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQT);
572                 break;
573         case MLX5_CMD_OP_CREATE_TIR:
574                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIR);
575                 break;
576         case MLX5_CMD_OP_CREATE_TIS:
577                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIS);
578                 break;
579         case MLX5_CMD_OP_ALLOC_Q_COUNTER:
580                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
581                          MLX5_CMD_OP_DEALLOC_Q_COUNTER);
582                 break;
583         case MLX5_CMD_OP_CREATE_FLOW_TABLE:
584                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in);
585                 *obj_id = MLX5_GET(create_flow_table_out, out, table_id);
586                 MLX5_SET(destroy_flow_table_in, din, other_vport,
587                          MLX5_GET(create_flow_table_in,  in, other_vport));
588                 MLX5_SET(destroy_flow_table_in, din, vport_number,
589                          MLX5_GET(create_flow_table_in,  in, vport_number));
590                 MLX5_SET(destroy_flow_table_in, din, table_type,
591                          MLX5_GET(create_flow_table_in,  in, table_type));
592                 MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id);
593                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
594                          MLX5_CMD_OP_DESTROY_FLOW_TABLE);
595                 break;
596         case MLX5_CMD_OP_CREATE_FLOW_GROUP:
597                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in);
598                 *obj_id = MLX5_GET(create_flow_group_out, out, group_id);
599                 MLX5_SET(destroy_flow_group_in, din, other_vport,
600                          MLX5_GET(create_flow_group_in, in, other_vport));
601                 MLX5_SET(destroy_flow_group_in, din, vport_number,
602                          MLX5_GET(create_flow_group_in, in, vport_number));
603                 MLX5_SET(destroy_flow_group_in, din, table_type,
604                          MLX5_GET(create_flow_group_in, in, table_type));
605                 MLX5_SET(destroy_flow_group_in, din, table_id,
606                          MLX5_GET(create_flow_group_in, in, table_id));
607                 MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id);
608                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
609                          MLX5_CMD_OP_DESTROY_FLOW_GROUP);
610                 break;
611         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
612                 *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in);
613                 *obj_id = MLX5_GET(set_fte_in, in, flow_index);
614                 MLX5_SET(delete_fte_in, din, other_vport,
615                          MLX5_GET(set_fte_in,  in, other_vport));
616                 MLX5_SET(delete_fte_in, din, vport_number,
617                          MLX5_GET(set_fte_in, in, vport_number));
618                 MLX5_SET(delete_fte_in, din, table_type,
619                          MLX5_GET(set_fte_in, in, table_type));
620                 MLX5_SET(delete_fte_in, din, table_id,
621                          MLX5_GET(set_fte_in, in, table_id));
622                 MLX5_SET(delete_fte_in, din, flow_index, *obj_id);
623                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
624                          MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
625                 break;
626         case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
627                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
628                          MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
629                 break;
630         case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
631                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
632                          MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT);
633                 break;
634         case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
635                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
636                          MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
637                 break;
638         case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
639                 *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in);
640                 *obj_id = MLX5_GET(create_scheduling_element_out, out,
641                                    scheduling_element_id);
642                 MLX5_SET(destroy_scheduling_element_in, din,
643                          scheduling_hierarchy,
644                          MLX5_GET(create_scheduling_element_in, in,
645                                   scheduling_hierarchy));
646                 MLX5_SET(destroy_scheduling_element_in, din,
647                          scheduling_element_id, *obj_id);
648                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
649                          MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT);
650                 break;
651         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
652                 *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in);
653                 *obj_id = MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
654                 MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id);
655                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
656                          MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
657                 break;
658         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
659                 *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in);
660                 *obj_id = MLX5_GET(set_l2_table_entry_in, in, table_index);
661                 MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id);
662                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
663                          MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
664                 break;
665         case MLX5_CMD_OP_CREATE_QP:
666                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_QP);
667                 break;
668         case MLX5_CMD_OP_CREATE_SRQ:
669                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SRQ);
670                 break;
671         case MLX5_CMD_OP_CREATE_XRC_SRQ:
672                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
673                          MLX5_CMD_OP_DESTROY_XRC_SRQ);
674                 break;
675         case MLX5_CMD_OP_CREATE_DCT:
676                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_DCT);
677                 break;
678         case MLX5_CMD_OP_CREATE_XRQ:
679                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_XRQ);
680                 break;
681         case MLX5_CMD_OP_ATTACH_TO_MCG:
682                 *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in);
683                 MLX5_SET(detach_from_mcg_in, din, qpn,
684                          MLX5_GET(attach_to_mcg_in, in, qpn));
685                 memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid),
686                        MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid),
687                        MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid));
688                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
689                 break;
690         case MLX5_CMD_OP_ALLOC_XRCD:
691                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
692                 break;
693         default:
694                 /* The entry must match to one of the devx_is_obj_create_cmd */
695                 WARN_ON(true);
696                 break;
697         }
698 }
699
700 static int devx_obj_cleanup(struct ib_uobject *uobject,
701                             enum rdma_remove_reason why)
702 {
703         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
704         struct devx_obj *obj = uobject->object;
705         int ret;
706
707         ret = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
708         if (ib_is_destroy_retryable(ret, why, uobject))
709                 return ret;
710
711         kfree(obj);
712         return ret;
713 }
714
715 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
716         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
717 {
718         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
719         int cmd_out_len =  uverbs_attr_get_len(attrs,
720                                         MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT);
721         void *cmd_out;
722         struct ib_uobject *uobj = uverbs_attr_get_uobject(
723                 attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
724         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
725         struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
726         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
727         struct devx_obj *obj;
728         int err;
729
730         if (!c->devx_uid)
731                 return -EPERM;
732
733         if (!devx_is_obj_create_cmd(cmd_in))
734                 return -EINVAL;
735
736         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
737         if (IS_ERR(cmd_out))
738                 return PTR_ERR(cmd_out);
739
740         obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
741         if (!obj)
742                 return -ENOMEM;
743
744         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
745         err = mlx5_cmd_exec(dev->mdev, cmd_in,
746                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN),
747                             cmd_out, cmd_out_len);
748         if (err)
749                 goto obj_free;
750
751         uobj->object = obj;
752         obj->mdev = dev->mdev;
753         devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, &obj->obj_id);
754         WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
755
756         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
757         if (err)
758                 goto obj_destroy;
759
760         return 0;
761
762 obj_destroy:
763         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
764 obj_free:
765         kfree(obj);
766         return err;
767 }
768
769 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(
770         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
771 {
772         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
773         int cmd_out_len = uverbs_attr_get_len(attrs,
774                                         MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
775         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
776                                                           MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
777         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
778         struct devx_obj *obj = uobj->object;
779         void *cmd_out;
780         int err;
781
782         if (!c->devx_uid)
783                 return -EPERM;
784
785         if (!devx_is_obj_modify_cmd(cmd_in))
786                 return -EINVAL;
787
788         if (!devx_is_valid_obj_id(obj, cmd_in))
789                 return -EINVAL;
790
791         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
792         if (IS_ERR(cmd_out))
793                 return PTR_ERR(cmd_out);
794
795         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
796         err = mlx5_cmd_exec(obj->mdev, cmd_in,
797                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
798                             cmd_out, cmd_out_len);
799         if (err)
800                 return err;
801
802         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
803                               cmd_out, cmd_out_len);
804 }
805
806 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(
807         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
808 {
809         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
810         int cmd_out_len = uverbs_attr_get_len(attrs,
811                                               MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
812         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
813                                                           MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
814         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
815         struct devx_obj *obj = uobj->object;
816         void *cmd_out;
817         int err;
818
819         if (!c->devx_uid)
820                 return -EPERM;
821
822         if (!devx_is_obj_query_cmd(cmd_in))
823                 return -EINVAL;
824
825         if (!devx_is_valid_obj_id(obj, cmd_in))
826                 return -EINVAL;
827
828         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
829         if (IS_ERR(cmd_out))
830                 return PTR_ERR(cmd_out);
831
832         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
833         err = mlx5_cmd_exec(obj->mdev, cmd_in,
834                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
835                             cmd_out, cmd_out_len);
836         if (err)
837                 return err;
838
839         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
840                               cmd_out, cmd_out_len);
841 }
842
843 static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
844                          struct uverbs_attr_bundle *attrs,
845                          struct devx_umem *obj)
846 {
847         u64 addr;
848         size_t size;
849         u32 access;
850         int npages;
851         int err;
852         u32 page_mask;
853
854         if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
855             uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN))
856                 return -EFAULT;
857
858         err = uverbs_get_flags32(&access, attrs,
859                                  MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
860                                  IB_ACCESS_SUPPORTED);
861         if (err)
862                 return err;
863
864         err = ib_check_mr_access(access);
865         if (err)
866                 return err;
867
868         obj->umem = ib_umem_get(ucontext, addr, size, access, 0);
869         if (IS_ERR(obj->umem))
870                 return PTR_ERR(obj->umem);
871
872         mlx5_ib_cont_pages(obj->umem, obj->umem->address,
873                            MLX5_MKEY_PAGE_SHIFT_MASK, &npages,
874                            &obj->page_shift, &obj->ncont, NULL);
875
876         if (!npages) {
877                 ib_umem_release(obj->umem);
878                 return -EINVAL;
879         }
880
881         page_mask = (1 << obj->page_shift) - 1;
882         obj->page_offset = obj->umem->address & page_mask;
883
884         return 0;
885 }
886
887 static int devx_umem_reg_cmd_alloc(struct uverbs_attr_bundle *attrs,
888                                    struct devx_umem *obj,
889                                    struct devx_umem_reg_cmd *cmd)
890 {
891         cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
892                     (MLX5_ST_SZ_BYTES(mtt) * obj->ncont);
893         cmd->in = uverbs_zalloc(attrs, cmd->inlen);
894         return PTR_ERR_OR_ZERO(cmd->in);
895 }
896
897 static void devx_umem_reg_cmd_build(struct mlx5_ib_dev *dev,
898                                     struct devx_umem *obj,
899                                     struct devx_umem_reg_cmd *cmd)
900 {
901         void *umem;
902         __be64 *mtt;
903
904         umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
905         mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
906
907         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
908         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, obj_type, MLX5_OBJ_TYPE_UMEM);
909         MLX5_SET64(umem, umem, num_of_mtt, obj->ncont);
910         MLX5_SET(umem, umem, log_page_size, obj->page_shift -
911                                             MLX5_ADAPTER_PAGE_SHIFT);
912         MLX5_SET(umem, umem, page_offset, obj->page_offset);
913         mlx5_ib_populate_pas(dev, obj->umem, obj->page_shift, mtt,
914                              (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
915                              MLX5_IB_MTT_READ);
916 }
917
918 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
919         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
920 {
921         struct devx_umem_reg_cmd cmd;
922         struct devx_umem *obj;
923         struct ib_uobject *uobj = uverbs_attr_get_uobject(
924                 attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
925         u32 obj_id;
926         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
927         struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
928         int err;
929
930         if (!c->devx_uid)
931                 return -EPERM;
932
933         obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
934         if (!obj)
935                 return -ENOMEM;
936
937         err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
938         if (err)
939                 goto err_obj_free;
940
941         err = devx_umem_reg_cmd_alloc(attrs, obj, &cmd);
942         if (err)
943                 goto err_umem_release;
944
945         devx_umem_reg_cmd_build(dev, obj, &cmd);
946
947         MLX5_SET(general_obj_in_cmd_hdr, cmd.in, uid, c->devx_uid);
948         err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
949                             sizeof(cmd.out));
950         if (err)
951                 goto err_umem_release;
952
953         obj->mdev = dev->mdev;
954         uobj->object = obj;
955         devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
956         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, sizeof(obj_id));
957         if (err)
958                 goto err_umem_destroy;
959
960         return 0;
961
962 err_umem_destroy:
963         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, cmd.out, sizeof(cmd.out));
964 err_umem_release:
965         ib_umem_release(obj->umem);
966 err_obj_free:
967         kfree(obj);
968         return err;
969 }
970
971 static int devx_umem_cleanup(struct ib_uobject *uobject,
972                              enum rdma_remove_reason why)
973 {
974         struct devx_umem *obj = uobject->object;
975         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
976         int err;
977
978         err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
979         if (ib_is_destroy_retryable(err, why, uobject))
980                 return err;
981
982         ib_umem_release(obj->umem);
983         kfree(obj);
984         return 0;
985 }
986
987 DECLARE_UVERBS_NAMED_METHOD(
988         MLX5_IB_METHOD_DEVX_UMEM_REG,
989         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
990                         MLX5_IB_OBJECT_DEVX_UMEM,
991                         UVERBS_ACCESS_NEW,
992                         UA_MANDATORY),
993         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
994                            UVERBS_ATTR_TYPE(u64),
995                            UA_MANDATORY),
996         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
997                            UVERBS_ATTR_TYPE(u64),
998                            UA_MANDATORY),
999         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
1000                              enum ib_access_flags),
1001         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
1002                             UVERBS_ATTR_TYPE(u32),
1003                             UA_MANDATORY));
1004
1005 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1006         MLX5_IB_METHOD_DEVX_UMEM_DEREG,
1007         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
1008                         MLX5_IB_OBJECT_DEVX_UMEM,
1009                         UVERBS_ACCESS_DESTROY,
1010                         UA_MANDATORY));
1011
1012 DECLARE_UVERBS_NAMED_METHOD(
1013         MLX5_IB_METHOD_DEVX_QUERY_EQN,
1014         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
1015                            UVERBS_ATTR_TYPE(u32),
1016                            UA_MANDATORY),
1017         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
1018                             UVERBS_ATTR_TYPE(u32),
1019                             UA_MANDATORY));
1020
1021 DECLARE_UVERBS_NAMED_METHOD(
1022         MLX5_IB_METHOD_DEVX_QUERY_UAR,
1023         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
1024                            UVERBS_ATTR_TYPE(u32),
1025                            UA_MANDATORY),
1026         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
1027                             UVERBS_ATTR_TYPE(u32),
1028                             UA_MANDATORY));
1029
1030 DECLARE_UVERBS_NAMED_METHOD(
1031         MLX5_IB_METHOD_DEVX_OTHER,
1032         UVERBS_ATTR_PTR_IN(
1033                 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
1034                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1035                 UA_MANDATORY,
1036                 UA_ALLOC_AND_COPY),
1037         UVERBS_ATTR_PTR_OUT(
1038                 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
1039                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1040                 UA_MANDATORY));
1041
1042 DECLARE_UVERBS_NAMED_METHOD(
1043         MLX5_IB_METHOD_DEVX_OBJ_CREATE,
1044         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
1045                         MLX5_IB_OBJECT_DEVX_OBJ,
1046                         UVERBS_ACCESS_NEW,
1047                         UA_MANDATORY),
1048         UVERBS_ATTR_PTR_IN(
1049                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
1050                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1051                 UA_MANDATORY,
1052                 UA_ALLOC_AND_COPY),
1053         UVERBS_ATTR_PTR_OUT(
1054                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
1055                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1056                 UA_MANDATORY));
1057
1058 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1059         MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
1060         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
1061                         MLX5_IB_OBJECT_DEVX_OBJ,
1062                         UVERBS_ACCESS_DESTROY,
1063                         UA_MANDATORY));
1064
1065 DECLARE_UVERBS_NAMED_METHOD(
1066         MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
1067         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
1068                         MLX5_IB_OBJECT_DEVX_OBJ,
1069                         UVERBS_ACCESS_WRITE,
1070                         UA_MANDATORY),
1071         UVERBS_ATTR_PTR_IN(
1072                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
1073                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1074                 UA_MANDATORY,
1075                 UA_ALLOC_AND_COPY),
1076         UVERBS_ATTR_PTR_OUT(
1077                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
1078                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1079                 UA_MANDATORY));
1080
1081 DECLARE_UVERBS_NAMED_METHOD(
1082         MLX5_IB_METHOD_DEVX_OBJ_QUERY,
1083         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
1084                         MLX5_IB_OBJECT_DEVX_OBJ,
1085                         UVERBS_ACCESS_READ,
1086                         UA_MANDATORY),
1087         UVERBS_ATTR_PTR_IN(
1088                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
1089                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1090                 UA_MANDATORY,
1091                 UA_ALLOC_AND_COPY),
1092         UVERBS_ATTR_PTR_OUT(
1093                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
1094                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1095                 UA_MANDATORY));
1096
1097 DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
1098                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
1099                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
1100                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN));
1101
1102 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
1103                             UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
1104                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
1105                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
1106                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
1107                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY));
1108
1109 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
1110                             UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
1111                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
1112                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
1113
1114 DECLARE_UVERBS_OBJECT_TREE(devx_objects,
1115                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX),
1116                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ),
1117                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM));
1118
1119 const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void)
1120 {
1121         return &devx_objects;
1122 }