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)(
 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_ENCAP_HEADER:
 631                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 632                          MLX5_CMD_OP_DEALLOC_ENCAP_HEADER);
 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         struct devx_obj *obj;
 727         int err;
 728
 729         if (!c->devx_uid)
 730                 return -EPERM;
 731
 732         if (!devx_is_obj_create_cmd(cmd_in))
 733                 return -EINVAL;
 734
 735         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 736         if (IS_ERR(cmd_out))
 737                 return PTR_ERR(cmd_out);
 738
 739         obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
 740         if (!obj)
 741                 return -ENOMEM;
 742
 743         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 744         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 745                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN),
 746                             cmd_out, cmd_out_len);
 747         if (err)
 748                 goto obj_free;
 749
 750         uobj->object = obj;
 751         obj->mdev = dev->mdev;
 752         devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, &obj->obj_id);
 753         WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
 754
 755         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
 756         if (err)
 757                 goto obj_free;
 758
 759         return 0;
 760
 761 obj_free:
 762         kfree(obj);
 763         return err;
 764 }
 765
 766 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(
 767         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 768 {
 769         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
 770         int cmd_out_len = uverbs_attr_get_len(attrs,
 771                                         MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
 772         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 773                                                           MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
 774         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 775         struct devx_obj *obj = uobj->object;
 776         void *cmd_out;
 777         int err;
 778
 779         if (!c->devx_uid)
 780                 return -EPERM;
 781
 782         if (!devx_is_obj_modify_cmd(cmd_in))
 783                 return -EINVAL;
 784
 785         if (!devx_is_valid_obj_id(obj, cmd_in))
 786                 return -EINVAL;
 787
 788         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 789         if (IS_ERR(cmd_out))
 790                 return PTR_ERR(cmd_out);
 791
 792         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 793         err = mlx5_cmd_exec(obj->mdev, cmd_in,
 794                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
 795                             cmd_out, cmd_out_len);
 796         if (err)
 797                 return err;
 798
 799         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
 800                               cmd_out, cmd_out_len);
 801 }
 802
 803 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(
 804         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 805 {
 806         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
 807         int cmd_out_len = uverbs_attr_get_len(attrs,
 808                                               MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
 809         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 810                                                           MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
 811         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 812         struct devx_obj *obj = uobj->object;
 813         void *cmd_out;
 814         int err;
 815
 816         if (!c->devx_uid)
 817                 return -EPERM;
 818
 819         if (!devx_is_obj_query_cmd(cmd_in))
 820                 return -EINVAL;
 821
 822         if (!devx_is_valid_obj_id(obj, cmd_in))
 823                 return -EINVAL;
 824
 825         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 826         if (IS_ERR(cmd_out))
 827                 return PTR_ERR(cmd_out);
 828
 829         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 830         err = mlx5_cmd_exec(obj->mdev, cmd_in,
 831                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
 832                             cmd_out, cmd_out_len);
 833         if (err)
 834                 return err;
 835
 836         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
 837                               cmd_out, cmd_out_len);
 838 }
 839
 840 static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
 841                          struct uverbs_attr_bundle *attrs,
 842                          struct devx_umem *obj)
 843 {
 844         u64 addr;
 845         size_t size;
 846         u32 access;
 847         int npages;
 848         int err;
 849         u32 page_mask;
 850
 851         if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
 852             uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN))
 853                 return -EFAULT;
 854
 855         err = uverbs_get_flags32(&access, attrs,
 856                                  MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
 857                                  IB_ACCESS_SUPPORTED);
 858         if (err)
 859                 return err;
 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 uverbs_attr_bundle *attrs,
 885                                    struct devx_umem *obj,
 886                                    struct devx_umem_reg_cmd *cmd)
 887 {
 888         cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
 889                     (MLX5_ST_SZ_BYTES(mtt) * obj->ncont);
 890         cmd->in = uverbs_zalloc(attrs, cmd->inlen);
 891         return PTR_ERR_OR_ZERO(cmd->in);
 892 }
 893
 894 static void devx_umem_reg_cmd_build(struct mlx5_ib_dev *dev,
 895                                     struct devx_umem *obj,
 896                                     struct devx_umem_reg_cmd *cmd)
 897 {
 898         void *umem;
 899         __be64 *mtt;
 900
 901         umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
 902         mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
 903
 904         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
 905         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, obj_type, MLX5_OBJ_TYPE_UMEM);
 906         MLX5_SET64(umem, umem, num_of_mtt, obj->ncont);
 907         MLX5_SET(umem, umem, log_page_size, obj->page_shift -
 908                                             MLX5_ADAPTER_PAGE_SHIFT);
 909         MLX5_SET(umem, umem, page_offset, obj->page_offset);
 910         mlx5_ib_populate_pas(dev, obj->umem, obj->page_shift, mtt,
 911                              (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
 912                              MLX5_IB_MTT_READ);
 913 }
 914
 915 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
 916         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 917 {
 918         struct devx_umem_reg_cmd cmd;
 919         struct devx_umem *obj;
 920         struct ib_uobject *uobj = uverbs_attr_get_uobject(
 921                 attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
 922         u32 obj_id;
 923         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 924         struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
 925         int err;
 926
 927         if (!c->devx_uid)
 928                 return -EPERM;
 929
 930         obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
 931         if (!obj)
 932                 return -ENOMEM;
 933
 934         err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
 935         if (err)
 936                 goto err_obj_free;
 937
 938         err = devx_umem_reg_cmd_alloc(attrs, obj, &cmd);
 939         if (err)
 940                 goto err_umem_release;
 941
 942         devx_umem_reg_cmd_build(dev, obj, &cmd);
 943
 944         MLX5_SET(general_obj_in_cmd_hdr, cmd.in, uid, c->devx_uid);
 945         err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
 946                             sizeof(cmd.out));
 947         if (err)
 948                 goto err_umem_release;
 949
 950         obj->mdev = dev->mdev;
 951         uobj->object = obj;
 952         devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
 953         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, sizeof(obj_id));
 954         if (err)
 955                 goto err_umem_destroy;
 956
 957         return 0;
 958
 959 err_umem_destroy:
 960         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, cmd.out, sizeof(cmd.out));
 961 err_umem_release:
 962         ib_umem_release(obj->umem);
 963 err_obj_free:
 964         kfree(obj);
 965         return err;
 966 }
 967
 968 static int devx_umem_cleanup(struct ib_uobject *uobject,
 969                              enum rdma_remove_reason why)
 970 {
 971         struct devx_umem *obj = uobject->object;
 972         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 973         int err;
 974
 975         err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 976         if (ib_is_destroy_retryable(err, why, uobject))
 977                 return err;
 978
 979         ib_umem_release(obj->umem);
 980         kfree(obj);
 981         return 0;
 982 }
 983
 984 DECLARE_UVERBS_NAMED_METHOD(
 985         MLX5_IB_METHOD_DEVX_UMEM_REG,
 986         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
 987                         MLX5_IB_OBJECT_DEVX_UMEM,
 988                         UVERBS_ACCESS_NEW,
 989                         UA_MANDATORY),
 990         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
 991                            UVERBS_ATTR_TYPE(u64),
 992                            UA_MANDATORY),
 993         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
 994                            UVERBS_ATTR_TYPE(u64),
 995                            UA_MANDATORY),
 996         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
 997                              enum ib_access_flags),
 998         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
 999                             UVERBS_ATTR_TYPE(u32),
1000                             UA_MANDATORY));
1001
1002 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1003         MLX5_IB_METHOD_DEVX_UMEM_DEREG,
1004         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
1005                         MLX5_IB_OBJECT_DEVX_UMEM,
1006                         UVERBS_ACCESS_DESTROY,
1007                         UA_MANDATORY));
1008
1009 DECLARE_UVERBS_NAMED_METHOD(
1010         MLX5_IB_METHOD_DEVX_QUERY_EQN,
1011         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
1012                            UVERBS_ATTR_TYPE(u32),
1013                            UA_MANDATORY),
1014         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
1015                             UVERBS_ATTR_TYPE(u32),
1016                             UA_MANDATORY));
1017
1018 DECLARE_UVERBS_NAMED_METHOD(
1019         MLX5_IB_METHOD_DEVX_QUERY_UAR,
1020         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
1021                            UVERBS_ATTR_TYPE(u32),
1022                            UA_MANDATORY),
1023         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
1024                             UVERBS_ATTR_TYPE(u32),
1025                             UA_MANDATORY));
1026
1027 DECLARE_UVERBS_NAMED_METHOD(
1028         MLX5_IB_METHOD_DEVX_OTHER,
1029         UVERBS_ATTR_PTR_IN(
1030                 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
1031                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1032                 UA_MANDATORY,
1033                 UA_ALLOC_AND_COPY),
1034         UVERBS_ATTR_PTR_OUT(
1035                 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
1036                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1037                 UA_MANDATORY));
1038
1039 DECLARE_UVERBS_NAMED_METHOD(
1040         MLX5_IB_METHOD_DEVX_OBJ_CREATE,
1041         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
1042                         MLX5_IB_OBJECT_DEVX_OBJ,
1043                         UVERBS_ACCESS_NEW,
1044                         UA_MANDATORY),
1045         UVERBS_ATTR_PTR_IN(
1046                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
1047                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1048                 UA_MANDATORY,
1049                 UA_ALLOC_AND_COPY),
1050         UVERBS_ATTR_PTR_OUT(
1051                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
1052                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1053                 UA_MANDATORY));
1054
1055 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1056         MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
1057         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
1058                         MLX5_IB_OBJECT_DEVX_OBJ,
1059                         UVERBS_ACCESS_DESTROY,
1060                         UA_MANDATORY));
1061
1062 DECLARE_UVERBS_NAMED_METHOD(
1063         MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
1064         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
1065                         MLX5_IB_OBJECT_DEVX_OBJ,
1066                         UVERBS_ACCESS_WRITE,
1067                         UA_MANDATORY),
1068         UVERBS_ATTR_PTR_IN(
1069                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
1070                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1071                 UA_MANDATORY,
1072                 UA_ALLOC_AND_COPY),
1073         UVERBS_ATTR_PTR_OUT(
1074                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
1075                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1076                 UA_MANDATORY));
1077
1078 DECLARE_UVERBS_NAMED_METHOD(
1079         MLX5_IB_METHOD_DEVX_OBJ_QUERY,
1080         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
1081                         MLX5_IB_OBJECT_DEVX_OBJ,
1082                         UVERBS_ACCESS_READ,
1083                         UA_MANDATORY),
1084         UVERBS_ATTR_PTR_IN(
1085                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
1086                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1087                 UA_MANDATORY,
1088                 UA_ALLOC_AND_COPY),
1089         UVERBS_ATTR_PTR_OUT(
1090                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
1091                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1092                 UA_MANDATORY));
1093
1094 DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
1095                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
1096                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
1097                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN));
1098
1099 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
1100                             UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
1101                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
1102                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
1103                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
1104                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY));
1105
1106 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
1107                             UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
1108                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
1109                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
1110
1111 DECLARE_UVERBS_OBJECT_TREE(devx_objects,
1112                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX),
1113                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ),
1114                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM));
1115
1116 const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void)
1117 {
1118         return &devx_objects;
1119 }