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_ENCAP_HEADER:
 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)(struct ib_device *ib_dev,
 413                                   struct ib_uverbs_file *file,
 414                                   struct uverbs_attr_bundle *attrs)
 415 {
 416         struct mlx5_ib_dev *dev = to_mdev(ib_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         err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn);
 427         if (err < 0)
 428                 return err;
 429
 430         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
 431                            &dev_eqn, sizeof(dev_eqn)))
 432                 return -EFAULT;
 433
 434         return 0;
 435 }
 436
 437 /*
 438  *Security note:
 439  * The hardware protection mechanism works like this: Each device object that
 440  * is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in
 441  * the device specification manual) upon its creation. Then upon doorbell,
 442  * hardware fetches the object context for which the doorbell was rang, and
 443  * validates that the UAR through which the DB was rang matches the UAR ID
 444  * of the object.
 445  * If no match the doorbell is silently ignored by the hardware. Of course,
 446  * the user cannot ring a doorbell on a UAR that was not mapped to it.
 447  * Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command
 448  * mailboxes (except tagging them with UID), we expose to the user its UAR
 449  * ID, so it can embed it in these objects in the expected specification
 450  * format. So the only thing the user can do is hurt itself by creating a
 451  * QP/SQ/CQ with a UAR ID other than his, and then in this case other users
 452  * may ring a doorbell on its objects.
 453  * The consequence of that will be that another user can schedule a QP/SQ
 454  * of the buggy user for execution (just insert it to the hardware schedule
 455  * queue or arm its CQ for event generation), no further harm is expected.
 456  */
 457 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)(struct ib_device *ib_dev,
 458                                   struct ib_uverbs_file *file,
 459                                   struct uverbs_attr_bundle *attrs)
 460 {
 461         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 462         u32 user_idx;
 463         s32 dev_idx;
 464
 465         if (uverbs_copy_from(&user_idx, attrs,
 466                              MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX))
 467                 return -EFAULT;
 468
 469         dev_idx = bfregn_to_uar_index(to_mdev(ib_dev),
 470                                       &c->bfregi, user_idx, true);
 471         if (dev_idx < 0)
 472                 return dev_idx;
 473
 474         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
 475                            &dev_idx, sizeof(dev_idx)))
 476                 return -EFAULT;
 477
 478         return 0;
 479 }
 480
 481 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)(struct ib_device *ib_dev,
 482                                   struct ib_uverbs_file *file,
 483                                   struct uverbs_attr_bundle *attrs)
 484 {
 485         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 486         struct mlx5_ib_dev *dev = to_mdev(ib_dev);
 487         void *cmd_in = uverbs_attr_get_alloced_ptr(
 488                 attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN);
 489         int cmd_out_len = uverbs_attr_get_len(attrs,
 490                                         MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT);
 491         void *cmd_out;
 492         int err;
 493
 494         if (!c->devx_uid)
 495                 return -EPERM;
 496
 497         /* Only white list of some general HCA commands are allowed for this method. */
 498         if (!devx_is_general_cmd(cmd_in))
 499                 return -EINVAL;
 500
 501         cmd_out = kvzalloc(cmd_out_len, GFP_KERNEL);
 502         if (!cmd_out)
 503                 return -ENOMEM;
 504
 505         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 506         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 507                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN),
 508                             cmd_out, cmd_out_len);
 509         if (err)
 510                 goto other_cmd_free;
 511
 512         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out, cmd_out_len);
 513
 514 other_cmd_free:
 515         kvfree(cmd_out);
 516         return err;
 517 }
 518
 519 static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
 520                                        u32 *dinlen,
 521                                        u32 *obj_id)
 522 {
 523         u16 obj_type = MLX5_GET(general_obj_in_cmd_hdr, in, obj_type);
 524         u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid);
 525
 526         *obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
 527         *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr);
 528
 529         MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id);
 530         MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid);
 531
 532         switch (MLX5_GET(general_obj_in_cmd_hdr, in, opcode)) {
 533         case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
 534                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
 535                 MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, obj_type);
 536                 break;
 537
 538         case MLX5_CMD_OP_CREATE_MKEY:
 539                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_MKEY);
 540                 break;
 541         case MLX5_CMD_OP_CREATE_CQ:
 542                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
 543                 break;
 544         case MLX5_CMD_OP_ALLOC_PD:
 545                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_PD);
 546                 break;
 547         case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
 548                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 549                          MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
 550                 break;
 551         case MLX5_CMD_OP_CREATE_RMP:
 552                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RMP);
 553                 break;
 554         case MLX5_CMD_OP_CREATE_SQ:
 555                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SQ);
 556                 break;
 557         case MLX5_CMD_OP_CREATE_RQ:
 558                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQ);
 559                 break;
 560         case MLX5_CMD_OP_CREATE_RQT:
 561                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQT);
 562                 break;
 563         case MLX5_CMD_OP_CREATE_TIR:
 564                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIR);
 565                 break;
 566         case MLX5_CMD_OP_CREATE_TIS:
 567                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIS);
 568                 break;
 569         case MLX5_CMD_OP_ALLOC_Q_COUNTER:
 570                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 571                          MLX5_CMD_OP_DEALLOC_Q_COUNTER);
 572                 break;
 573         case MLX5_CMD_OP_CREATE_FLOW_TABLE:
 574                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in);
 575                 *obj_id = MLX5_GET(create_flow_table_out, out, table_id);
 576                 MLX5_SET(destroy_flow_table_in, din, other_vport,
 577                          MLX5_GET(create_flow_table_in,  in, other_vport));
 578                 MLX5_SET(destroy_flow_table_in, din, vport_number,
 579                          MLX5_GET(create_flow_table_in,  in, vport_number));
 580                 MLX5_SET(destroy_flow_table_in, din, table_type,
 581                          MLX5_GET(create_flow_table_in,  in, table_type));
 582                 MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id);
 583                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 584                          MLX5_CMD_OP_DESTROY_FLOW_TABLE);
 585                 break;
 586         case MLX5_CMD_OP_CREATE_FLOW_GROUP:
 587                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in);
 588                 *obj_id = MLX5_GET(create_flow_group_out, out, group_id);
 589                 MLX5_SET(destroy_flow_group_in, din, other_vport,
 590                          MLX5_GET(create_flow_group_in, in, other_vport));
 591                 MLX5_SET(destroy_flow_group_in, din, vport_number,
 592                          MLX5_GET(create_flow_group_in, in, vport_number));
 593                 MLX5_SET(destroy_flow_group_in, din, table_type,
 594                          MLX5_GET(create_flow_group_in, in, table_type));
 595                 MLX5_SET(destroy_flow_group_in, din, table_id,
 596                          MLX5_GET(create_flow_group_in, in, table_id));
 597                 MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id);
 598                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 599                          MLX5_CMD_OP_DESTROY_FLOW_GROUP);
 600                 break;
 601         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
 602                 *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in);
 603                 *obj_id = MLX5_GET(set_fte_in, in, flow_index);
 604                 MLX5_SET(delete_fte_in, din, other_vport,
 605                          MLX5_GET(set_fte_in,  in, other_vport));
 606                 MLX5_SET(delete_fte_in, din, vport_number,
 607                          MLX5_GET(set_fte_in, in, vport_number));
 608                 MLX5_SET(delete_fte_in, din, table_type,
 609                          MLX5_GET(set_fte_in, in, table_type));
 610                 MLX5_SET(delete_fte_in, din, table_id,
 611                          MLX5_GET(set_fte_in, in, table_id));
 612                 MLX5_SET(delete_fte_in, din, flow_index, *obj_id);
 613                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 614                          MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
 615                 break;
 616         case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
 617                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 618                          MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
 619                 break;
 620         case MLX5_CMD_OP_ALLOC_ENCAP_HEADER:
 621                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 622                          MLX5_CMD_OP_DEALLOC_ENCAP_HEADER);
 623                 break;
 624         case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
 625                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 626                          MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
 627                 break;
 628         case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
 629                 *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in);
 630                 *obj_id = MLX5_GET(create_scheduling_element_out, out,
 631                                    scheduling_element_id);
 632                 MLX5_SET(destroy_scheduling_element_in, din,
 633                          scheduling_hierarchy,
 634                          MLX5_GET(create_scheduling_element_in, in,
 635                                   scheduling_hierarchy));
 636                 MLX5_SET(destroy_scheduling_element_in, din,
 637                          scheduling_element_id, *obj_id);
 638                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 639                          MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT);
 640                 break;
 641         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
 642                 *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in);
 643                 *obj_id = MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
 644                 MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id);
 645                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 646                          MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
 647                 break;
 648         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
 649                 *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in);
 650                 *obj_id = MLX5_GET(set_l2_table_entry_in, in, table_index);
 651                 MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id);
 652                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 653                          MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
 654                 break;
 655         case MLX5_CMD_OP_CREATE_QP:
 656                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_QP);
 657                 break;
 658         case MLX5_CMD_OP_CREATE_SRQ:
 659                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SRQ);
 660                 break;
 661         case MLX5_CMD_OP_CREATE_XRC_SRQ:
 662                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 663                          MLX5_CMD_OP_DESTROY_XRC_SRQ);
 664                 break;
 665         case MLX5_CMD_OP_CREATE_DCT:
 666                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_DCT);
 667                 break;
 668         case MLX5_CMD_OP_CREATE_XRQ:
 669                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_XRQ);
 670                 break;
 671         case MLX5_CMD_OP_ATTACH_TO_MCG:
 672                 *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in);
 673                 MLX5_SET(detach_from_mcg_in, din, qpn,
 674                          MLX5_GET(attach_to_mcg_in, in, qpn));
 675                 memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid),
 676                        MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid),
 677                        MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid));
 678                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
 679                 break;
 680         case MLX5_CMD_OP_ALLOC_XRCD:
 681                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
 682                 break;
 683         default:
 684                 /* The entry must match to one of the devx_is_obj_create_cmd */
 685                 WARN_ON(true);
 686                 break;
 687         }
 688 }
 689
 690 static int devx_obj_cleanup(struct ib_uobject *uobject,
 691                             enum rdma_remove_reason why)
 692 {
 693         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 694         struct devx_obj *obj = uobject->object;
 695         int ret;
 696
 697         ret = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 698         if (ib_is_destroy_retryable(ret, why, uobject))
 699                 return ret;
 700
 701         kfree(obj);
 702         return ret;
 703 }
 704
 705 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(struct ib_device *ib_dev,
 706                                    struct ib_uverbs_file *file,
 707                                    struct uverbs_attr_bundle *attrs)
 708 {
 709         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 710         struct mlx5_ib_dev *dev = to_mdev(ib_dev);
 711         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
 712         int cmd_out_len =  uverbs_attr_get_len(attrs,
 713                                         MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT);
 714         void *cmd_out;
 715         struct ib_uobject *uobj;
 716         struct devx_obj *obj;
 717         int err;
 718
 719         if (!c->devx_uid)
 720                 return -EPERM;
 721
 722         if (!devx_is_obj_create_cmd(cmd_in))
 723                 return -EINVAL;
 724
 725         obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
 726         if (!obj)
 727                 return -ENOMEM;
 728
 729         cmd_out = kvzalloc(cmd_out_len, GFP_KERNEL);
 730         if (!cmd_out) {
 731                 err = -ENOMEM;
 732                 goto obj_free;
 733         }
 734
 735         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 736         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 737                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN),
 738                             cmd_out, cmd_out_len);
 739         if (err)
 740                 goto cmd_free;
 741
 742         uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
 743         uobj->object = obj;
 744         obj->mdev = dev->mdev;
 745         devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, &obj->obj_id);
 746         WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
 747
 748         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
 749         if (err)
 750                 goto cmd_free;
 751
 752         kvfree(cmd_out);
 753         return 0;
 754
 755 cmd_free:
 756         kvfree(cmd_out);
 757 obj_free:
 758         kfree(obj);
 759         return err;
 760 }
 761
 762 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(struct ib_device *ib_dev,
 763                                    struct ib_uverbs_file *file,
 764                                    struct uverbs_attr_bundle *attrs)
 765 {
 766         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 767         struct mlx5_ib_dev *dev = to_mdev(ib_dev);
 768         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
 769         int cmd_out_len = uverbs_attr_get_len(attrs,
 770                                         MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
 771         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 772                                                           MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
 773         void *cmd_out;
 774         int err;
 775
 776         if (!c->devx_uid)
 777                 return -EPERM;
 778
 779         if (!devx_is_obj_modify_cmd(cmd_in))
 780                 return -EINVAL;
 781
 782         if (!devx_is_valid_obj_id(uobj->object, cmd_in))
 783                 return -EINVAL;
 784
 785         cmd_out = kvzalloc(cmd_out_len, GFP_KERNEL);
 786         if (!cmd_out)
 787                 return -ENOMEM;
 788
 789         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 790         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 791                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
 792                             cmd_out, cmd_out_len);
 793         if (err)
 794                 goto other_cmd_free;
 795
 796         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
 797                              cmd_out, cmd_out_len);
 798
 799 other_cmd_free:
 800         kvfree(cmd_out);
 801         return err;
 802 }
 803
 804 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(struct ib_device *ib_dev,
 805                                    struct ib_uverbs_file *file,
 806                                    struct uverbs_attr_bundle *attrs)
 807 {
 808         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 809         struct mlx5_ib_dev *dev = to_mdev(ib_dev);
 810         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
 811         int cmd_out_len = uverbs_attr_get_len(attrs,
 812                                               MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
 813         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 814                                                           MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
 815         void *cmd_out;
 816         int err;
 817
 818         if (!c->devx_uid)
 819                 return -EPERM;
 820
 821         if (!devx_is_obj_query_cmd(cmd_in))
 822                 return -EINVAL;
 823
 824         if (!devx_is_valid_obj_id(uobj->object, cmd_in))
 825                 return -EINVAL;
 826
 827         cmd_out = kvzalloc(cmd_out_len, GFP_KERNEL);
 828         if (!cmd_out)
 829                 return -ENOMEM;
 830
 831         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 832         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 833                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
 834                             cmd_out, cmd_out_len);
 835         if (err)
 836                 goto other_cmd_free;
 837
 838         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, cmd_out, cmd_out_len);
 839
 840 other_cmd_free:
 841         kvfree(cmd_out);
 842         return err;
 843 }
 844
 845 static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
 846                          struct uverbs_attr_bundle *attrs,
 847                          struct devx_umem *obj)
 848 {
 849         u64 addr;
 850         size_t size;
 851         int access;
 852         int npages;
 853         int err;
 854         u32 page_mask;
 855
 856         if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
 857             uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN) ||
 858             uverbs_copy_from(&access, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS))
 859                 return -EFAULT;
 860
 861         err = ib_check_mr_access(access);
 862         if (err)
 863                 return err;
 864
 865         obj->umem = ib_umem_get(ucontext, addr, size, access, 0);
 866         if (IS_ERR(obj->umem))
 867                 return PTR_ERR(obj->umem);
 868
 869         mlx5_ib_cont_pages(obj->umem, obj->umem->address,
 870                            MLX5_MKEY_PAGE_SHIFT_MASK, &npages,
 871                            &obj->page_shift, &obj->ncont, NULL);
 872
 873         if (!npages) {
 874                 ib_umem_release(obj->umem);
 875                 return -EINVAL;
 876         }
 877
 878         page_mask = (1 << obj->page_shift) - 1;
 879         obj->page_offset = obj->umem->address & page_mask;
 880
 881         return 0;
 882 }
 883
 884 static int devx_umem_reg_cmd_alloc(struct devx_umem *obj,
 885                                    struct devx_umem_reg_cmd *cmd)
 886 {
 887         cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
 888                     (MLX5_ST_SZ_BYTES(mtt) * obj->ncont);
 889         cmd->in = kvzalloc(cmd->inlen, GFP_KERNEL);
 890         return cmd->in ? 0 : -ENOMEM;
 891 }
 892
 893 static void devx_umem_reg_cmd_free(struct devx_umem_reg_cmd *cmd)
 894 {
 895         kvfree(cmd->in);
 896 }
 897
 898 static void devx_umem_reg_cmd_build(struct mlx5_ib_dev *dev,
 899                                     struct devx_umem *obj,
 900                                     struct devx_umem_reg_cmd *cmd)
 901 {
 902         void *umem;
 903         __be64 *mtt;
 904
 905         umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
 906         mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
 907
 908         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
 909         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, obj_type, MLX5_OBJ_TYPE_UMEM);
 910         MLX5_SET64(umem, umem, num_of_mtt, obj->ncont);
 911         MLX5_SET(umem, umem, log_page_size, obj->page_shift -
 912                                             MLX5_ADAPTER_PAGE_SHIFT);
 913         MLX5_SET(umem, umem, page_offset, obj->page_offset);
 914         mlx5_ib_populate_pas(dev, obj->umem, obj->page_shift, mtt,
 915                              (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
 916                              MLX5_IB_MTT_READ);
 917 }
 918
 919 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(struct ib_device *ib_dev,
 920                                  struct ib_uverbs_file *file,
 921                                  struct uverbs_attr_bundle *attrs)
 922 {
 923         struct mlx5_ib_ucontext *c = devx_ufile2uctx(file);
 924         struct mlx5_ib_dev *dev = to_mdev(ib_dev);
 925         struct devx_umem_reg_cmd cmd;
 926         struct devx_umem *obj;
 927         struct ib_uobject *uobj;
 928         u32 obj_id;
 929         int err;
 930
 931         if (!c->devx_uid)
 932                 return -EPERM;
 933
 934         uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
 935         obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
 936         if (!obj)
 937                 return -ENOMEM;
 938
 939         err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
 940         if (err)
 941                 goto err_obj_free;
 942
 943         err = devx_umem_reg_cmd_alloc(obj, &cmd);
 944         if (err)
 945                 goto err_umem_release;
 946
 947         devx_umem_reg_cmd_build(dev, obj, &cmd);
 948
 949         MLX5_SET(general_obj_in_cmd_hdr, cmd.in, uid, c->devx_uid);
 950         err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
 951                             sizeof(cmd.out));
 952         if (err)
 953                 goto err_umem_reg_cmd_free;
 954
 955         obj->mdev = dev->mdev;
 956         uobj->object = obj;
 957         devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
 958         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, sizeof(obj_id));
 959         if (err)
 960                 goto err_umem_destroy;
 961
 962         devx_umem_reg_cmd_free(&cmd);
 963
 964         return 0;
 965
 966 err_umem_destroy:
 967         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, cmd.out, sizeof(cmd.out));
 968 err_umem_reg_cmd_free:
 969         devx_umem_reg_cmd_free(&cmd);
 970 err_umem_release:
 971         ib_umem_release(obj->umem);
 972 err_obj_free:
 973         kfree(obj);
 974         return err;
 975 }
 976
 977 static int devx_umem_cleanup(struct ib_uobject *uobject,
 978                              enum rdma_remove_reason why)
 979 {
 980         struct devx_umem *obj = uobject->object;
 981         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 982         int err;
 983
 984         err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 985         if (ib_is_destroy_retryable(err, why, uobject))
 986                 return err;
 987
 988         ib_umem_release(obj->umem);
 989         kfree(obj);
 990         return 0;
 991 }
 992
 993 DECLARE_UVERBS_NAMED_METHOD(
 994         MLX5_IB_METHOD_DEVX_UMEM_REG,
 995         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
 996                         MLX5_IB_OBJECT_DEVX_UMEM,
 997                         UVERBS_ACCESS_NEW,
 998                         UA_MANDATORY),
 999         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
1000                            UVERBS_ATTR_TYPE(u64),
1001                            UA_MANDATORY),
1002         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
1003                            UVERBS_ATTR_TYPE(u64),
1004                            UA_MANDATORY),
1005         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
1006                            UVERBS_ATTR_TYPE(u32),
1007                            UA_MANDATORY),
1008         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
1009                             UVERBS_ATTR_TYPE(u32),
1010                             UA_MANDATORY));
1011
1012 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1013         MLX5_IB_METHOD_DEVX_UMEM_DEREG,
1014         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
1015                         MLX5_IB_OBJECT_DEVX_UMEM,
1016                         UVERBS_ACCESS_DESTROY,
1017                         UA_MANDATORY));
1018
1019 DECLARE_UVERBS_NAMED_METHOD(
1020         MLX5_IB_METHOD_DEVX_QUERY_EQN,
1021         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
1022                            UVERBS_ATTR_TYPE(u32),
1023                            UA_MANDATORY),
1024         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
1025                             UVERBS_ATTR_TYPE(u32),
1026                             UA_MANDATORY));
1027
1028 DECLARE_UVERBS_NAMED_METHOD(
1029         MLX5_IB_METHOD_DEVX_QUERY_UAR,
1030         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
1031                            UVERBS_ATTR_TYPE(u32),
1032                            UA_MANDATORY),
1033         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
1034                             UVERBS_ATTR_TYPE(u32),
1035                             UA_MANDATORY));
1036
1037 DECLARE_UVERBS_NAMED_METHOD(
1038         MLX5_IB_METHOD_DEVX_OTHER,
1039         UVERBS_ATTR_PTR_IN(
1040                 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
1041                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1042                 UA_MANDATORY,
1043                 UA_ALLOC_AND_COPY),
1044         UVERBS_ATTR_PTR_OUT(
1045                 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
1046                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1047                 UA_MANDATORY));
1048
1049 DECLARE_UVERBS_NAMED_METHOD(
1050         MLX5_IB_METHOD_DEVX_OBJ_CREATE,
1051         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
1052                         MLX5_IB_OBJECT_DEVX_OBJ,
1053                         UVERBS_ACCESS_NEW,
1054                         UA_MANDATORY),
1055         UVERBS_ATTR_PTR_IN(
1056                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
1057                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1058                 UA_MANDATORY,
1059                 UA_ALLOC_AND_COPY),
1060         UVERBS_ATTR_PTR_OUT(
1061                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
1062                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1063                 UA_MANDATORY));
1064
1065 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1066         MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
1067         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
1068                         MLX5_IB_OBJECT_DEVX_OBJ,
1069                         UVERBS_ACCESS_DESTROY,
1070                         UA_MANDATORY));
1071
1072 DECLARE_UVERBS_NAMED_METHOD(
1073         MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
1074         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
1075                         MLX5_IB_OBJECT_DEVX_OBJ,
1076                         UVERBS_ACCESS_WRITE,
1077                         UA_MANDATORY),
1078         UVERBS_ATTR_PTR_IN(
1079                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
1080                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1081                 UA_MANDATORY,
1082                 UA_ALLOC_AND_COPY),
1083         UVERBS_ATTR_PTR_OUT(
1084                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
1085                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1086                 UA_MANDATORY));
1087
1088 DECLARE_UVERBS_NAMED_METHOD(
1089         MLX5_IB_METHOD_DEVX_OBJ_QUERY,
1090         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
1091                         MLX5_IB_OBJECT_DEVX_OBJ,
1092                         UVERBS_ACCESS_READ,
1093                         UA_MANDATORY),
1094         UVERBS_ATTR_PTR_IN(
1095                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
1096                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1097                 UA_MANDATORY,
1098                 UA_ALLOC_AND_COPY),
1099         UVERBS_ATTR_PTR_OUT(
1100                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
1101                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1102                 UA_MANDATORY));
1103
1104 DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
1105                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
1106                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
1107                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN));
1108
1109 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
1110                             UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
1111                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
1112                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
1113                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
1114                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY));
1115
1116 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
1117                             UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
1118                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
1119                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
1120
1121 DECLARE_UVERBS_OBJECT_TREE(devx_objects,
1122                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX),
1123                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ),
1124                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM));
1125
1126 const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void)
1127 {
1128         return &devx_objects;
1129 }