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_INIT2INIT_QP:
 332         case MLX5_CMD_OP_RTR2RTS_QP:
 333         case MLX5_CMD_OP_RTS2RTS_QP:
 334         case MLX5_CMD_OP_SQERR2RTS_QP:
 335         case MLX5_CMD_OP_2ERR_QP:
 336         case MLX5_CMD_OP_2RST_QP:
 337         case MLX5_CMD_OP_ARM_XRC_SRQ:
 338         case MLX5_CMD_OP_ARM_RQ:
 339         case MLX5_CMD_OP_DRAIN_DCT:
 340         case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
 341         case MLX5_CMD_OP_ARM_XRQ:
 342                 return true;
 343         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
 344         {
 345                 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
 346
 347                 if (op_mod == 1)
 348                         return true;
 349                 return false;
 350         }
 351         default:
 352                 return false;
 353         }
 354 }
 355
 356 static bool devx_is_obj_query_cmd(const void *in)
 357 {
 358         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
 359
 360         switch (opcode) {
 361         case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
 362         case MLX5_CMD_OP_QUERY_MKEY:
 363         case MLX5_CMD_OP_QUERY_CQ:
 364         case MLX5_CMD_OP_QUERY_RMP:
 365         case MLX5_CMD_OP_QUERY_SQ:
 366         case MLX5_CMD_OP_QUERY_RQ:
 367         case MLX5_CMD_OP_QUERY_RQT:
 368         case MLX5_CMD_OP_QUERY_TIR:
 369         case MLX5_CMD_OP_QUERY_TIS:
 370         case MLX5_CMD_OP_QUERY_Q_COUNTER:
 371         case MLX5_CMD_OP_QUERY_FLOW_TABLE:
 372         case MLX5_CMD_OP_QUERY_FLOW_GROUP:
 373         case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
 374         case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
 375         case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
 376         case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
 377         case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
 378         case MLX5_CMD_OP_QUERY_QP:
 379         case MLX5_CMD_OP_QUERY_SRQ:
 380         case MLX5_CMD_OP_QUERY_XRC_SRQ:
 381         case MLX5_CMD_OP_QUERY_DCT:
 382         case MLX5_CMD_OP_QUERY_XRQ:
 383                 return true;
 384         default:
 385                 return false;
 386         }
 387 }
 388
 389 static bool devx_is_general_cmd(void *in)
 390 {
 391         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
 392
 393         switch (opcode) {
 394         case MLX5_CMD_OP_QUERY_HCA_CAP:
 395         case MLX5_CMD_OP_QUERY_VPORT_STATE:
 396         case MLX5_CMD_OP_QUERY_ADAPTER:
 397         case MLX5_CMD_OP_QUERY_ISSI:
 398         case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
 399         case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
 400         case MLX5_CMD_OP_QUERY_VNIC_ENV:
 401         case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
 402         case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
 403         case MLX5_CMD_OP_NOP:
 404         case MLX5_CMD_OP_QUERY_CONG_STATUS:
 405         case MLX5_CMD_OP_QUERY_CONG_PARAMS:
 406         case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
 407                 return true;
 408         default:
 409                 return false;
 410         }
 411 }
 412
 413 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)(
 414         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 415 {
 416         struct mlx5_ib_ucontext *c;
 417         struct mlx5_ib_dev *dev;
 418         int user_vector;
 419         int dev_eqn;
 420         unsigned int irqn;
 421         int err;
 422
 423         if (uverbs_copy_from(&user_vector, attrs,
 424                              MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC))
 425                 return -EFAULT;
 426
 427         c = devx_ufile2uctx(file);
 428         if (IS_ERR(c))
 429                 return PTR_ERR(c);
 430         dev = to_mdev(c->ibucontext.device);
 431
 432         err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn);
 433         if (err < 0)
 434                 return err;
 435
 436         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
 437                            &dev_eqn, sizeof(dev_eqn)))
 438                 return -EFAULT;
 439
 440         return 0;
 441 }
 442
 443 /*
 444  *Security note:
 445  * The hardware protection mechanism works like this: Each device object that
 446  * is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in
 447  * the device specification manual) upon its creation. Then upon doorbell,
 448  * hardware fetches the object context for which the doorbell was rang, and
 449  * validates that the UAR through which the DB was rang matches the UAR ID
 450  * of the object.
 451  * If no match the doorbell is silently ignored by the hardware. Of course,
 452  * the user cannot ring a doorbell on a UAR that was not mapped to it.
 453  * Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command
 454  * mailboxes (except tagging them with UID), we expose to the user its UAR
 455  * ID, so it can embed it in these objects in the expected specification
 456  * format. So the only thing the user can do is hurt itself by creating a
 457  * QP/SQ/CQ with a UAR ID other than his, and then in this case other users
 458  * may ring a doorbell on its objects.
 459  * The consequence of that will be that another user can schedule a QP/SQ
 460  * of the buggy user for execution (just insert it to the hardware schedule
 461  * queue or arm its CQ for event generation), no further harm is expected.
 462  */
 463 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)(
 464         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 465 {
 466         struct mlx5_ib_ucontext *c;
 467         struct mlx5_ib_dev *dev;
 468         u32 user_idx;
 469         s32 dev_idx;
 470
 471         c = devx_ufile2uctx(file);
 472         if (IS_ERR(c))
 473                 return PTR_ERR(c);
 474         dev = to_mdev(c->ibucontext.device);
 475
 476         if (uverbs_copy_from(&user_idx, attrs,
 477                              MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX))
 478                 return -EFAULT;
 479
 480         dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true);
 481         if (dev_idx < 0)
 482                 return dev_idx;
 483
 484         if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
 485                            &dev_idx, sizeof(dev_idx)))
 486                 return -EFAULT;
 487
 488         return 0;
 489 }
 490
 491 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)(
 492         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 493 {
 494         struct mlx5_ib_ucontext *c;
 495         struct mlx5_ib_dev *dev;
 496         void *cmd_in = uverbs_attr_get_alloced_ptr(
 497                 attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN);
 498         int cmd_out_len = uverbs_attr_get_len(attrs,
 499                                         MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT);
 500         void *cmd_out;
 501         int err;
 502
 503         c = devx_ufile2uctx(file);
 504         if (IS_ERR(c))
 505                 return PTR_ERR(c);
 506         dev = to_mdev(c->ibucontext.device);
 507
 508         if (!c->devx_uid)
 509                 return -EPERM;
 510
 511         /* Only white list of some general HCA commands are allowed for this method. */
 512         if (!devx_is_general_cmd(cmd_in))
 513                 return -EINVAL;
 514
 515         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 516         if (IS_ERR(cmd_out))
 517                 return PTR_ERR(cmd_out);
 518
 519         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 520         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 521                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN),
 522                             cmd_out, cmd_out_len);
 523         if (err)
 524                 return err;
 525
 526         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out,
 527                               cmd_out_len);
 528 }
 529
 530 static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
 531                                        u32 *dinlen,
 532                                        u32 *obj_id)
 533 {
 534         u16 obj_type = MLX5_GET(general_obj_in_cmd_hdr, in, obj_type);
 535         u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid);
 536
 537         *obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
 538         *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr);
 539
 540         MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id);
 541         MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid);
 542
 543         switch (MLX5_GET(general_obj_in_cmd_hdr, in, opcode)) {
 544         case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
 545                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
 546                 MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, obj_type);
 547                 break;
 548
 549         case MLX5_CMD_OP_CREATE_MKEY:
 550                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_MKEY);
 551                 break;
 552         case MLX5_CMD_OP_CREATE_CQ:
 553                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
 554                 break;
 555         case MLX5_CMD_OP_ALLOC_PD:
 556                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_PD);
 557                 break;
 558         case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
 559                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 560                          MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
 561                 break;
 562         case MLX5_CMD_OP_CREATE_RMP:
 563                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RMP);
 564                 break;
 565         case MLX5_CMD_OP_CREATE_SQ:
 566                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SQ);
 567                 break;
 568         case MLX5_CMD_OP_CREATE_RQ:
 569                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQ);
 570                 break;
 571         case MLX5_CMD_OP_CREATE_RQT:
 572                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQT);
 573                 break;
 574         case MLX5_CMD_OP_CREATE_TIR:
 575                 *obj_id = MLX5_GET(create_tir_out, out, tirn);
 576                 MLX5_SET(destroy_tir_in, din, opcode, MLX5_CMD_OP_DESTROY_TIR);
 577                 MLX5_SET(destroy_tir_in, din, tirn, *obj_id);
 578                 break;
 579         case MLX5_CMD_OP_CREATE_TIS:
 580                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIS);
 581                 break;
 582         case MLX5_CMD_OP_ALLOC_Q_COUNTER:
 583                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 584                          MLX5_CMD_OP_DEALLOC_Q_COUNTER);
 585                 break;
 586         case MLX5_CMD_OP_CREATE_FLOW_TABLE:
 587                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in);
 588                 *obj_id = MLX5_GET(create_flow_table_out, out, table_id);
 589                 MLX5_SET(destroy_flow_table_in, din, other_vport,
 590                          MLX5_GET(create_flow_table_in,  in, other_vport));
 591                 MLX5_SET(destroy_flow_table_in, din, vport_number,
 592                          MLX5_GET(create_flow_table_in,  in, vport_number));
 593                 MLX5_SET(destroy_flow_table_in, din, table_type,
 594                          MLX5_GET(create_flow_table_in,  in, table_type));
 595                 MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id);
 596                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 597                          MLX5_CMD_OP_DESTROY_FLOW_TABLE);
 598                 break;
 599         case MLX5_CMD_OP_CREATE_FLOW_GROUP:
 600                 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in);
 601                 *obj_id = MLX5_GET(create_flow_group_out, out, group_id);
 602                 MLX5_SET(destroy_flow_group_in, din, other_vport,
 603                          MLX5_GET(create_flow_group_in, in, other_vport));
 604                 MLX5_SET(destroy_flow_group_in, din, vport_number,
 605                          MLX5_GET(create_flow_group_in, in, vport_number));
 606                 MLX5_SET(destroy_flow_group_in, din, table_type,
 607                          MLX5_GET(create_flow_group_in, in, table_type));
 608                 MLX5_SET(destroy_flow_group_in, din, table_id,
 609                          MLX5_GET(create_flow_group_in, in, table_id));
 610                 MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id);
 611                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 612                          MLX5_CMD_OP_DESTROY_FLOW_GROUP);
 613                 break;
 614         case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
 615                 *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in);
 616                 *obj_id = MLX5_GET(set_fte_in, in, flow_index);
 617                 MLX5_SET(delete_fte_in, din, other_vport,
 618                          MLX5_GET(set_fte_in,  in, other_vport));
 619                 MLX5_SET(delete_fte_in, din, vport_number,
 620                          MLX5_GET(set_fte_in, in, vport_number));
 621                 MLX5_SET(delete_fte_in, din, table_type,
 622                          MLX5_GET(set_fte_in, in, table_type));
 623                 MLX5_SET(delete_fte_in, din, table_id,
 624                          MLX5_GET(set_fte_in, in, table_id));
 625                 MLX5_SET(delete_fte_in, din, flow_index, *obj_id);
 626                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 627                          MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
 628                 break;
 629         case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
 630                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 631                          MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
 632                 break;
 633         case MLX5_CMD_OP_ALLOC_ENCAP_HEADER:
 634                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 635                          MLX5_CMD_OP_DEALLOC_ENCAP_HEADER);
 636                 break;
 637         case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
 638                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 639                          MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
 640                 break;
 641         case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
 642                 *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in);
 643                 *obj_id = MLX5_GET(create_scheduling_element_out, out,
 644                                    scheduling_element_id);
 645                 MLX5_SET(destroy_scheduling_element_in, din,
 646                          scheduling_hierarchy,
 647                          MLX5_GET(create_scheduling_element_in, in,
 648                                   scheduling_hierarchy));
 649                 MLX5_SET(destroy_scheduling_element_in, din,
 650                          scheduling_element_id, *obj_id);
 651                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 652                          MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT);
 653                 break;
 654         case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
 655                 *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in);
 656                 *obj_id = MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
 657                 MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id);
 658                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 659                          MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
 660                 break;
 661         case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
 662                 *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in);
 663                 *obj_id = MLX5_GET(set_l2_table_entry_in, in, table_index);
 664                 MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id);
 665                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 666                          MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
 667                 break;
 668         case MLX5_CMD_OP_CREATE_QP:
 669                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_QP);
 670                 break;
 671         case MLX5_CMD_OP_CREATE_SRQ:
 672                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SRQ);
 673                 break;
 674         case MLX5_CMD_OP_CREATE_XRC_SRQ:
 675                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
 676                          MLX5_CMD_OP_DESTROY_XRC_SRQ);
 677                 break;
 678         case MLX5_CMD_OP_CREATE_DCT:
 679                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_DCT);
 680                 break;
 681         case MLX5_CMD_OP_CREATE_XRQ:
 682                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_XRQ);
 683                 break;
 684         case MLX5_CMD_OP_ATTACH_TO_MCG:
 685                 *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in);
 686                 MLX5_SET(detach_from_mcg_in, din, qpn,
 687                          MLX5_GET(attach_to_mcg_in, in, qpn));
 688                 memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid),
 689                        MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid),
 690                        MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid));
 691                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
 692                 break;
 693         case MLX5_CMD_OP_ALLOC_XRCD:
 694                 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
 695                 break;
 696         default:
 697                 /* The entry must match to one of the devx_is_obj_create_cmd */
 698                 WARN_ON(true);
 699                 break;
 700         }
 701 }
 702
 703 static int devx_obj_cleanup(struct ib_uobject *uobject,
 704                             enum rdma_remove_reason why)
 705 {
 706         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 707         struct devx_obj *obj = uobject->object;
 708         int ret;
 709
 710         ret = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 711         if (ib_is_destroy_retryable(ret, why, uobject))
 712                 return ret;
 713
 714         kfree(obj);
 715         return ret;
 716 }
 717
 718 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
 719         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 720 {
 721         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
 722         int cmd_out_len =  uverbs_attr_get_len(attrs,
 723                                         MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT);
 724         void *cmd_out;
 725         struct ib_uobject *uobj = uverbs_attr_get_uobject(
 726                 attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
 727         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 728         struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
 729         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 730         struct devx_obj *obj;
 731         int err;
 732
 733         if (!c->devx_uid)
 734                 return -EPERM;
 735
 736         if (!devx_is_obj_create_cmd(cmd_in))
 737                 return -EINVAL;
 738
 739         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 740         if (IS_ERR(cmd_out))
 741                 return PTR_ERR(cmd_out);
 742
 743         obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
 744         if (!obj)
 745                 return -ENOMEM;
 746
 747         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 748         err = mlx5_cmd_exec(dev->mdev, cmd_in,
 749                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN),
 750                             cmd_out, cmd_out_len);
 751         if (err)
 752                 goto obj_free;
 753
 754         uobj->object = obj;
 755         obj->mdev = dev->mdev;
 756         devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, &obj->obj_id);
 757         WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
 758
 759         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
 760         if (err)
 761                 goto obj_destroy;
 762
 763         return 0;
 764
 765 obj_destroy:
 766         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 767 obj_free:
 768         kfree(obj);
 769         return err;
 770 }
 771
 772 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(
 773         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 774 {
 775         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
 776         int cmd_out_len = uverbs_attr_get_len(attrs,
 777                                         MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
 778         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 779                                                           MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
 780         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 781         struct devx_obj *obj = uobj->object;
 782         void *cmd_out;
 783         int err;
 784
 785         if (!c->devx_uid)
 786                 return -EPERM;
 787
 788         if (!devx_is_obj_modify_cmd(cmd_in))
 789                 return -EINVAL;
 790
 791         if (!devx_is_valid_obj_id(obj, cmd_in))
 792                 return -EINVAL;
 793
 794         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 795         if (IS_ERR(cmd_out))
 796                 return PTR_ERR(cmd_out);
 797
 798         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 799         err = mlx5_cmd_exec(obj->mdev, cmd_in,
 800                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
 801                             cmd_out, cmd_out_len);
 802         if (err)
 803                 return err;
 804
 805         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
 806                               cmd_out, cmd_out_len);
 807 }
 808
 809 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(
 810         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 811 {
 812         void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
 813         int cmd_out_len = uverbs_attr_get_len(attrs,
 814                                               MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
 815         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
 816                                                           MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
 817         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 818         struct devx_obj *obj = uobj->object;
 819         void *cmd_out;
 820         int err;
 821
 822         if (!c->devx_uid)
 823                 return -EPERM;
 824
 825         if (!devx_is_obj_query_cmd(cmd_in))
 826                 return -EINVAL;
 827
 828         if (!devx_is_valid_obj_id(obj, cmd_in))
 829                 return -EINVAL;
 830
 831         cmd_out = uverbs_zalloc(attrs, cmd_out_len);
 832         if (IS_ERR(cmd_out))
 833                 return PTR_ERR(cmd_out);
 834
 835         MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, c->devx_uid);
 836         err = mlx5_cmd_exec(obj->mdev, cmd_in,
 837                             uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
 838                             cmd_out, cmd_out_len);
 839         if (err)
 840                 return err;
 841
 842         return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
 843                               cmd_out, cmd_out_len);
 844 }
 845
 846 static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
 847                          struct uverbs_attr_bundle *attrs,
 848                          struct devx_umem *obj)
 849 {
 850         u64 addr;
 851         size_t size;
 852         u32 access;
 853         int npages;
 854         int err;
 855         u32 page_mask;
 856
 857         if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
 858             uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN))
 859                 return -EFAULT;
 860
 861         err = uverbs_get_flags32(&access, attrs,
 862                                  MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
 863                                  IB_ACCESS_LOCAL_WRITE |
 864                                  IB_ACCESS_REMOTE_WRITE |
 865                                  IB_ACCESS_REMOTE_READ);
 866         if (err)
 867                 return err;
 868
 869         err = ib_check_mr_access(access);
 870         if (err)
 871                 return err;
 872
 873         obj->umem = ib_umem_get(ucontext, addr, size, access, 0);
 874         if (IS_ERR(obj->umem))
 875                 return PTR_ERR(obj->umem);
 876
 877         mlx5_ib_cont_pages(obj->umem, obj->umem->address,
 878                            MLX5_MKEY_PAGE_SHIFT_MASK, &npages,
 879                            &obj->page_shift, &obj->ncont, NULL);
 880
 881         if (!npages) {
 882                 ib_umem_release(obj->umem);
 883                 return -EINVAL;
 884         }
 885
 886         page_mask = (1 << obj->page_shift) - 1;
 887         obj->page_offset = obj->umem->address & page_mask;
 888
 889         return 0;
 890 }
 891
 892 static int devx_umem_reg_cmd_alloc(struct uverbs_attr_bundle *attrs,
 893                                    struct devx_umem *obj,
 894                                    struct devx_umem_reg_cmd *cmd)
 895 {
 896         cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
 897                     (MLX5_ST_SZ_BYTES(mtt) * obj->ncont);
 898         cmd->in = uverbs_zalloc(attrs, cmd->inlen);
 899         return PTR_ERR_OR_ZERO(cmd->in);
 900 }
 901
 902 static void devx_umem_reg_cmd_build(struct mlx5_ib_dev *dev,
 903                                     struct devx_umem *obj,
 904                                     struct devx_umem_reg_cmd *cmd)
 905 {
 906         void *umem;
 907         __be64 *mtt;
 908
 909         umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
 910         mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
 911
 912         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
 913         MLX5_SET(general_obj_in_cmd_hdr, cmd->in, obj_type, MLX5_OBJ_TYPE_UMEM);
 914         MLX5_SET64(umem, umem, num_of_mtt, obj->ncont);
 915         MLX5_SET(umem, umem, log_page_size, obj->page_shift -
 916                                             MLX5_ADAPTER_PAGE_SHIFT);
 917         MLX5_SET(umem, umem, page_offset, obj->page_offset);
 918         mlx5_ib_populate_pas(dev, obj->umem, obj->page_shift, mtt,
 919                              (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
 920                              MLX5_IB_MTT_READ);
 921 }
 922
 923 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
 924         struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
 925 {
 926         struct devx_umem_reg_cmd cmd;
 927         struct devx_umem *obj;
 928         struct ib_uobject *uobj = uverbs_attr_get_uobject(
 929                 attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
 930         u32 obj_id;
 931         struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
 932         struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
 933         int err;
 934
 935         if (!c->devx_uid)
 936                 return -EPERM;
 937
 938         obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
 939         if (!obj)
 940                 return -ENOMEM;
 941
 942         err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
 943         if (err)
 944                 goto err_obj_free;
 945
 946         err = devx_umem_reg_cmd_alloc(attrs, obj, &cmd);
 947         if (err)
 948                 goto err_umem_release;
 949
 950         devx_umem_reg_cmd_build(dev, obj, &cmd);
 951
 952         MLX5_SET(general_obj_in_cmd_hdr, cmd.in, uid, c->devx_uid);
 953         err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
 954                             sizeof(cmd.out));
 955         if (err)
 956                 goto err_umem_release;
 957
 958         obj->mdev = dev->mdev;
 959         uobj->object = obj;
 960         devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
 961         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, sizeof(obj_id));
 962         if (err)
 963                 goto err_umem_destroy;
 964
 965         return 0;
 966
 967 err_umem_destroy:
 968         mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, cmd.out, sizeof(cmd.out));
 969 err_umem_release:
 970         ib_umem_release(obj->umem);
 971 err_obj_free:
 972         kfree(obj);
 973         return err;
 974 }
 975
 976 static int devx_umem_cleanup(struct ib_uobject *uobject,
 977                              enum rdma_remove_reason why)
 978 {
 979         struct devx_umem *obj = uobject->object;
 980         u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
 981         int err;
 982
 983         err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
 984         if (ib_is_destroy_retryable(err, why, uobject))
 985                 return err;
 986
 987         ib_umem_release(obj->umem);
 988         kfree(obj);
 989         return 0;
 990 }
 991
 992 DECLARE_UVERBS_NAMED_METHOD(
 993         MLX5_IB_METHOD_DEVX_UMEM_REG,
 994         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
 995                         MLX5_IB_OBJECT_DEVX_UMEM,
 996                         UVERBS_ACCESS_NEW,
 997                         UA_MANDATORY),
 998         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
 999                            UVERBS_ATTR_TYPE(u64),
1000                            UA_MANDATORY),
1001         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
1002                            UVERBS_ATTR_TYPE(u64),
1003                            UA_MANDATORY),
1004         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
1005                              enum ib_access_flags),
1006         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
1007                             UVERBS_ATTR_TYPE(u32),
1008                             UA_MANDATORY));
1009
1010 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1011         MLX5_IB_METHOD_DEVX_UMEM_DEREG,
1012         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
1013                         MLX5_IB_OBJECT_DEVX_UMEM,
1014                         UVERBS_ACCESS_DESTROY,
1015                         UA_MANDATORY));
1016
1017 DECLARE_UVERBS_NAMED_METHOD(
1018         MLX5_IB_METHOD_DEVX_QUERY_EQN,
1019         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
1020                            UVERBS_ATTR_TYPE(u32),
1021                            UA_MANDATORY),
1022         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
1023                             UVERBS_ATTR_TYPE(u32),
1024                             UA_MANDATORY));
1025
1026 DECLARE_UVERBS_NAMED_METHOD(
1027         MLX5_IB_METHOD_DEVX_QUERY_UAR,
1028         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
1029                            UVERBS_ATTR_TYPE(u32),
1030                            UA_MANDATORY),
1031         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
1032                             UVERBS_ATTR_TYPE(u32),
1033                             UA_MANDATORY));
1034
1035 DECLARE_UVERBS_NAMED_METHOD(
1036         MLX5_IB_METHOD_DEVX_OTHER,
1037         UVERBS_ATTR_PTR_IN(
1038                 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
1039                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1040                 UA_MANDATORY,
1041                 UA_ALLOC_AND_COPY),
1042         UVERBS_ATTR_PTR_OUT(
1043                 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
1044                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1045                 UA_MANDATORY));
1046
1047 DECLARE_UVERBS_NAMED_METHOD(
1048         MLX5_IB_METHOD_DEVX_OBJ_CREATE,
1049         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
1050                         MLX5_IB_OBJECT_DEVX_OBJ,
1051                         UVERBS_ACCESS_NEW,
1052                         UA_MANDATORY),
1053         UVERBS_ATTR_PTR_IN(
1054                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
1055                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1056                 UA_MANDATORY,
1057                 UA_ALLOC_AND_COPY),
1058         UVERBS_ATTR_PTR_OUT(
1059                 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
1060                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1061                 UA_MANDATORY));
1062
1063 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
1064         MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
1065         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
1066                         MLX5_IB_OBJECT_DEVX_OBJ,
1067                         UVERBS_ACCESS_DESTROY,
1068                         UA_MANDATORY));
1069
1070 DECLARE_UVERBS_NAMED_METHOD(
1071         MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
1072         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
1073                         MLX5_IB_OBJECT_DEVX_OBJ,
1074                         UVERBS_ACCESS_WRITE,
1075                         UA_MANDATORY),
1076         UVERBS_ATTR_PTR_IN(
1077                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
1078                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1079                 UA_MANDATORY,
1080                 UA_ALLOC_AND_COPY),
1081         UVERBS_ATTR_PTR_OUT(
1082                 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
1083                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1084                 UA_MANDATORY));
1085
1086 DECLARE_UVERBS_NAMED_METHOD(
1087         MLX5_IB_METHOD_DEVX_OBJ_QUERY,
1088         UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
1089                         MLX5_IB_OBJECT_DEVX_OBJ,
1090                         UVERBS_ACCESS_READ,
1091                         UA_MANDATORY),
1092         UVERBS_ATTR_PTR_IN(
1093                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
1094                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
1095                 UA_MANDATORY,
1096                 UA_ALLOC_AND_COPY),
1097         UVERBS_ATTR_PTR_OUT(
1098                 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
1099                 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
1100                 UA_MANDATORY));
1101
1102 DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
1103                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
1104                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
1105                               &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN));
1106
1107 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
1108                             UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
1109                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
1110                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
1111                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
1112                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY));
1113
1114 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
1115                             UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
1116                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
1117                             &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
1118
1119 DECLARE_UVERBS_OBJECT_TREE(devx_objects,
1120                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX),
1121                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ),
1122                            &UVERBS_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM));
1123
1124 const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void)
1125 {
1126         return &devx_objects;
1127 }