linux/drivers/net/ipa/ipa_qmi.c
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   1// SPDX-License-Identifier: GPL-2.0
   2
   3/* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
   4 * Copyright (C) 2018-2020 Linaro Ltd.
   5 */
   6
   7#include <linux/types.h>
   8#include <linux/string.h>
   9#include <linux/slab.h>
  10#include <linux/qrtr.h>
  11#include <linux/soc/qcom/qmi.h>
  12
  13#include "ipa.h"
  14#include "ipa_endpoint.h"
  15#include "ipa_mem.h"
  16#include "ipa_table.h"
  17#include "ipa_modem.h"
  18#include "ipa_qmi_msg.h"
  19
  20/**
  21 * DOC: AP/Modem QMI Handshake
  22 *
  23 * The AP and modem perform a "handshake" at initialization time to ensure
  24 * both sides know when everything is ready to begin operating.  The AP
  25 * driver (this code) uses two QMI handles (endpoints) for this; a client
  26 * using a service on the modem, and server to service modem requests (and
  27 * to supply an indication message from the AP).  Once the handshake is
  28 * complete, the AP and modem may begin IPA operation.  This occurs
  29 * only when the AP IPA driver, modem IPA driver, and IPA microcontroller
  30 * are ready.
  31 *
  32 * The QMI service on the modem expects to receive an INIT_DRIVER request from
  33 * the AP, which contains parameters used by the modem during initialization.
  34 * The AP sends this request as soon as it is knows the modem side service
  35 * is available.  The modem responds to this request, and if this response
  36 * contains a success result, the AP knows the modem IPA driver is ready.
  37 *
  38 * The modem is responsible for loading firmware on the IPA microcontroller.
  39 * This occurs only during the initial modem boot.  The modem sends a
  40 * separate DRIVER_INIT_COMPLETE request to the AP to report that the
  41 * microcontroller is ready.  The AP may assume the microcontroller is
  42 * ready and remain so (even if the modem reboots) once it has received
  43 * and responded to this request.
  44 *
  45 * There is one final exchange involved in the handshake.  It is required
  46 * on the initial modem boot, but optional (but in practice does occur) on
  47 * subsequent boots.  The modem expects to receive a final INIT_COMPLETE
  48 * indication message from the AP when it is about to begin its normal
  49 * operation.  The AP will only send this message after it has received
  50 * and responded to an INDICATION_REGISTER request from the modem.
  51 *
  52 * So in summary:
  53 * - Whenever the AP learns the modem has booted and its IPA QMI service
  54 *   is available, it sends an INIT_DRIVER request to the modem.  The
  55 *   modem supplies a success response when it is ready to operate.
  56 * - On the initial boot, the modem sets up the IPA microcontroller, and
  57 *   sends a DRIVER_INIT_COMPLETE request to the AP when this is done.
  58 * - When the modem is ready to receive an INIT_COMPLETE indication from
  59 *   the AP, it sends an INDICATION_REGISTER request to the AP.
  60 * - On the initial modem boot, everything is ready when:
  61 *      - AP has received a success response from its INIT_DRIVER request
  62 *      - AP has responded to a DRIVER_INIT_COMPLETE request
  63 *      - AP has responded to an INDICATION_REGISTER request from the modem
  64 *      - AP has sent an INIT_COMPLETE indication to the modem
  65 * - On subsequent modem boots, everything is ready when:
  66 *      - AP has received a success response from its INIT_DRIVER request
  67 *      - AP has responded to a DRIVER_INIT_COMPLETE request
  68 * - The INDICATION_REGISTER request and INIT_COMPLETE indication are
  69 *   optional for non-initial modem boots, and have no bearing on the
  70 *   determination of when things are "ready"
  71 */
  72
  73#define IPA_HOST_SERVICE_SVC_ID         0x31
  74#define IPA_HOST_SVC_VERS               1
  75#define IPA_HOST_SERVICE_INS_ID         1
  76
  77#define IPA_MODEM_SERVICE_SVC_ID        0x31
  78#define IPA_MODEM_SERVICE_INS_ID        2
  79#define IPA_MODEM_SVC_VERS              1
  80
  81#define QMI_INIT_DRIVER_TIMEOUT         60000   /* A minute in milliseconds */
  82
  83/* Send an INIT_COMPLETE indication message to the modem */
  84static void ipa_server_init_complete(struct ipa_qmi *ipa_qmi)
  85{
  86        struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi);
  87        struct qmi_handle *qmi = &ipa_qmi->server_handle;
  88        struct sockaddr_qrtr *sq = &ipa_qmi->modem_sq;
  89        struct ipa_init_complete_ind ind = { };
  90        int ret;
  91
  92        ind.status.result = QMI_RESULT_SUCCESS_V01;
  93        ind.status.error = QMI_ERR_NONE_V01;
  94
  95        ret = qmi_send_indication(qmi, sq, IPA_QMI_INIT_COMPLETE,
  96                                   IPA_QMI_INIT_COMPLETE_IND_SZ,
  97                                   ipa_init_complete_ind_ei, &ind);
  98        if (ret)
  99                dev_err(&ipa->pdev->dev,
 100                        "error %d sending init complete indication\n", ret);
 101        else
 102                ipa_qmi->indication_sent = true;
 103}
 104
 105/* If requested (and not already sent) send the INIT_COMPLETE indication */
 106static void ipa_qmi_indication(struct ipa_qmi *ipa_qmi)
 107{
 108        if (!ipa_qmi->indication_requested)
 109                return;
 110
 111        if (ipa_qmi->indication_sent)
 112                return;
 113
 114        ipa_server_init_complete(ipa_qmi);
 115}
 116
 117/* Determine whether everything is ready to start normal operation.
 118 * We know everything (else) is ready when we know the IPA driver on
 119 * the modem is ready, and the microcontroller is ready.
 120 *
 121 * When the modem boots (or reboots), the handshake sequence starts
 122 * with the AP sending the modem an INIT_DRIVER request.  Within
 123 * that request, the uc_loaded flag will be zero (false) for an
 124 * initial boot, non-zero (true) for a subsequent (SSR) boot.
 125 */
 126static void ipa_qmi_ready(struct ipa_qmi *ipa_qmi)
 127{
 128        struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi);
 129        int ret;
 130
 131        /* We aren't ready until the modem and microcontroller are */
 132        if (!ipa_qmi->modem_ready || !ipa_qmi->uc_ready)
 133                return;
 134
 135        /* Send the indication message if it was requested */
 136        ipa_qmi_indication(ipa_qmi);
 137
 138        /* The initial boot requires us to send the indication. */
 139        if (ipa_qmi->initial_boot) {
 140                if (!ipa_qmi->indication_sent)
 141                        return;
 142
 143                /* The initial modem boot completed successfully */
 144                ipa_qmi->initial_boot = false;
 145        }
 146
 147        /* We're ready.  Start up normal operation */
 148        ipa = container_of(ipa_qmi, struct ipa, qmi);
 149        ret = ipa_modem_start(ipa);
 150        if (ret)
 151                dev_err(&ipa->pdev->dev, "error %d starting modem\n", ret);
 152}
 153
 154/* All QMI clients from the modem node are gone (modem shut down or crashed). */
 155static void ipa_server_bye(struct qmi_handle *qmi, unsigned int node)
 156{
 157        struct ipa_qmi *ipa_qmi;
 158
 159        ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle);
 160
 161        /* The modem client and server go away at the same time */
 162        memset(&ipa_qmi->modem_sq, 0, sizeof(ipa_qmi->modem_sq));
 163
 164        /* initial_boot doesn't change when modem reboots */
 165        /* uc_ready doesn't change when modem reboots */
 166        ipa_qmi->modem_ready = false;
 167        ipa_qmi->indication_requested = false;
 168        ipa_qmi->indication_sent = false;
 169}
 170
 171static struct qmi_ops ipa_server_ops = {
 172        .bye            = ipa_server_bye,
 173};
 174
 175/* Callback function to handle an INDICATION_REGISTER request message from the
 176 * modem.  This informs the AP that the modem is now ready to receive the
 177 * INIT_COMPLETE indication message.
 178 */
 179static void ipa_server_indication_register(struct qmi_handle *qmi,
 180                                           struct sockaddr_qrtr *sq,
 181                                           struct qmi_txn *txn,
 182                                           const void *decoded)
 183{
 184        struct ipa_indication_register_rsp rsp = { };
 185        struct ipa_qmi *ipa_qmi;
 186        struct ipa *ipa;
 187        int ret;
 188
 189        ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle);
 190        ipa = container_of(ipa_qmi, struct ipa, qmi);
 191
 192        rsp.rsp.result = QMI_RESULT_SUCCESS_V01;
 193        rsp.rsp.error = QMI_ERR_NONE_V01;
 194
 195        ret = qmi_send_response(qmi, sq, txn, IPA_QMI_INDICATION_REGISTER,
 196                                IPA_QMI_INDICATION_REGISTER_RSP_SZ,
 197                                ipa_indication_register_rsp_ei, &rsp);
 198        if (!ret) {
 199                ipa_qmi->indication_requested = true;
 200                ipa_qmi_ready(ipa_qmi);         /* We might be ready now */
 201        } else {
 202                dev_err(&ipa->pdev->dev,
 203                        "error %d sending register indication response\n", ret);
 204        }
 205}
 206
 207/* Respond to a DRIVER_INIT_COMPLETE request message from the modem. */
 208static void ipa_server_driver_init_complete(struct qmi_handle *qmi,
 209                                            struct sockaddr_qrtr *sq,
 210                                            struct qmi_txn *txn,
 211                                            const void *decoded)
 212{
 213        struct ipa_driver_init_complete_rsp rsp = { };
 214        struct ipa_qmi *ipa_qmi;
 215        struct ipa *ipa;
 216        int ret;
 217
 218        ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle);
 219        ipa = container_of(ipa_qmi, struct ipa, qmi);
 220
 221        rsp.rsp.result = QMI_RESULT_SUCCESS_V01;
 222        rsp.rsp.error = QMI_ERR_NONE_V01;
 223
 224        ret = qmi_send_response(qmi, sq, txn, IPA_QMI_DRIVER_INIT_COMPLETE,
 225                                IPA_QMI_DRIVER_INIT_COMPLETE_RSP_SZ,
 226                                ipa_driver_init_complete_rsp_ei, &rsp);
 227        if (!ret) {
 228                ipa_qmi->uc_ready = true;
 229                ipa_qmi_ready(ipa_qmi);         /* We might be ready now */
 230        } else {
 231                dev_err(&ipa->pdev->dev,
 232                        "error %d sending init complete response\n", ret);
 233        }
 234}
 235
 236/* The server handles two request message types sent by the modem. */
 237static struct qmi_msg_handler ipa_server_msg_handlers[] = {
 238        {
 239                .type           = QMI_REQUEST,
 240                .msg_id         = IPA_QMI_INDICATION_REGISTER,
 241                .ei             = ipa_indication_register_req_ei,
 242                .decoded_size   = IPA_QMI_INDICATION_REGISTER_REQ_SZ,
 243                .fn             = ipa_server_indication_register,
 244        },
 245        {
 246                .type           = QMI_REQUEST,
 247                .msg_id         = IPA_QMI_DRIVER_INIT_COMPLETE,
 248                .ei             = ipa_driver_init_complete_req_ei,
 249                .decoded_size   = IPA_QMI_DRIVER_INIT_COMPLETE_REQ_SZ,
 250                .fn             = ipa_server_driver_init_complete,
 251        },
 252};
 253
 254/* Handle an INIT_DRIVER response message from the modem. */
 255static void ipa_client_init_driver(struct qmi_handle *qmi,
 256                                   struct sockaddr_qrtr *sq,
 257                                   struct qmi_txn *txn, const void *decoded)
 258{
 259        txn->result = 0;        /* IPA_QMI_INIT_DRIVER request was successful */
 260        complete(&txn->completion);
 261}
 262
 263/* The client handles one response message type sent by the modem. */
 264static struct qmi_msg_handler ipa_client_msg_handlers[] = {
 265        {
 266                .type           = QMI_RESPONSE,
 267                .msg_id         = IPA_QMI_INIT_DRIVER,
 268                .ei             = ipa_init_modem_driver_rsp_ei,
 269                .decoded_size   = IPA_QMI_INIT_DRIVER_RSP_SZ,
 270                .fn             = ipa_client_init_driver,
 271        },
 272};
 273
 274/* Return a pointer to an init modem driver request structure, which contains
 275 * configuration parameters for the modem.  The modem may be started multiple
 276 * times, but generally these parameters don't change so we can reuse the
 277 * request structure once it's initialized.  The only exception is the
 278 * skip_uc_load field, which will be set only after the microcontroller has
 279 * reported it has completed its initialization.
 280 */
 281static const struct ipa_init_modem_driver_req *
 282init_modem_driver_req(struct ipa_qmi *ipa_qmi)
 283{
 284        struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi);
 285        static struct ipa_init_modem_driver_req req;
 286        const struct ipa_mem *mem;
 287
 288        /* The microcontroller is initialized on the first boot */
 289        req.skip_uc_load_valid = 1;
 290        req.skip_uc_load = ipa->uc_loaded ? 1 : 0;
 291
 292        /* We only have to initialize most of it once */
 293        if (req.platform_type_valid)
 294                return &req;
 295
 296        req.platform_type_valid = 1;
 297        req.platform_type = IPA_QMI_PLATFORM_TYPE_MSM_ANDROID;
 298
 299        mem = &ipa->mem[IPA_MEM_MODEM_HEADER];
 300        if (mem->size) {
 301                req.hdr_tbl_info_valid = 1;
 302                req.hdr_tbl_info.start = ipa->mem_offset + mem->offset;
 303                req.hdr_tbl_info.end = req.hdr_tbl_info.start + mem->size - 1;
 304        }
 305
 306        mem = &ipa->mem[IPA_MEM_V4_ROUTE];
 307        req.v4_route_tbl_info_valid = 1;
 308        req.v4_route_tbl_info.start = ipa->mem_offset + mem->offset;
 309        req.v4_route_tbl_info.count = mem->size / IPA_TABLE_ENTRY_SIZE;
 310
 311        mem = &ipa->mem[IPA_MEM_V6_ROUTE];
 312        req.v6_route_tbl_info_valid = 1;
 313        req.v6_route_tbl_info.start = ipa->mem_offset + mem->offset;
 314        req.v6_route_tbl_info.count = mem->size / IPA_TABLE_ENTRY_SIZE;
 315
 316        mem = &ipa->mem[IPA_MEM_V4_FILTER];
 317        req.v4_filter_tbl_start_valid = 1;
 318        req.v4_filter_tbl_start = ipa->mem_offset + mem->offset;
 319
 320        mem = &ipa->mem[IPA_MEM_V6_FILTER];
 321        req.v6_filter_tbl_start_valid = 1;
 322        req.v6_filter_tbl_start = ipa->mem_offset + mem->offset;
 323
 324        mem = &ipa->mem[IPA_MEM_MODEM];
 325        if (mem->size) {
 326                req.modem_mem_info_valid = 1;
 327                req.modem_mem_info.start = ipa->mem_offset + mem->offset;
 328                req.modem_mem_info.size = mem->size;
 329        }
 330
 331        req.ctrl_comm_dest_end_pt_valid = 1;
 332        req.ctrl_comm_dest_end_pt =
 333                ipa->name_map[IPA_ENDPOINT_AP_MODEM_RX]->endpoint_id;
 334
 335        /* skip_uc_load_valid and skip_uc_load are set above */
 336
 337        mem = &ipa->mem[IPA_MEM_MODEM_PROC_CTX];
 338        if (mem->size) {
 339                req.hdr_proc_ctx_tbl_info_valid = 1;
 340                req.hdr_proc_ctx_tbl_info.start =
 341                        ipa->mem_offset + mem->offset;
 342                req.hdr_proc_ctx_tbl_info.end =
 343                        req.hdr_proc_ctx_tbl_info.start + mem->size - 1;
 344        }
 345
 346        /* Nothing to report for the compression table (zip_tbl_info) */
 347
 348        mem = &ipa->mem[IPA_MEM_V4_ROUTE_HASHED];
 349        if (mem->size) {
 350                req.v4_hash_route_tbl_info_valid = 1;
 351                req.v4_hash_route_tbl_info.start =
 352                                ipa->mem_offset + mem->offset;
 353                req.v4_hash_route_tbl_info.count =
 354                                mem->size / IPA_TABLE_ENTRY_SIZE;
 355        }
 356
 357        mem = &ipa->mem[IPA_MEM_V6_ROUTE_HASHED];
 358        if (mem->size) {
 359                req.v6_hash_route_tbl_info_valid = 1;
 360                req.v6_hash_route_tbl_info.start =
 361                        ipa->mem_offset + mem->offset;
 362                req.v6_hash_route_tbl_info.count =
 363                        mem->size / IPA_TABLE_ENTRY_SIZE;
 364        }
 365
 366        mem = &ipa->mem[IPA_MEM_V4_FILTER_HASHED];
 367        if (mem->size) {
 368                req.v4_hash_filter_tbl_start_valid = 1;
 369                req.v4_hash_filter_tbl_start = ipa->mem_offset + mem->offset;
 370        }
 371
 372        mem = &ipa->mem[IPA_MEM_V6_FILTER_HASHED];
 373        if (mem->size) {
 374                req.v6_hash_filter_tbl_start_valid = 1;
 375                req.v6_hash_filter_tbl_start = ipa->mem_offset + mem->offset;
 376        }
 377
 378        /* None of the stats fields are valid (IPA v4.0 and above) */
 379
 380        if (ipa->version != IPA_VERSION_3_5_1) {
 381                mem = &ipa->mem[IPA_MEM_STATS_QUOTA];
 382                if (mem->size) {
 383                        req.hw_stats_quota_base_addr_valid = 1;
 384                        req.hw_stats_quota_base_addr =
 385                                ipa->mem_offset + mem->offset;
 386                        req.hw_stats_quota_size_valid = 1;
 387                        req.hw_stats_quota_size = ipa->mem_offset + mem->size;
 388                }
 389
 390                mem = &ipa->mem[IPA_MEM_STATS_DROP];
 391                if (mem->size) {
 392                        req.hw_stats_drop_base_addr_valid = 1;
 393                        req.hw_stats_drop_base_addr =
 394                                ipa->mem_offset + mem->offset;
 395                        req.hw_stats_drop_size_valid = 1;
 396                        req.hw_stats_drop_size = ipa->mem_offset + mem->size;
 397                }
 398        }
 399
 400        return &req;
 401}
 402
 403/* Send an INIT_DRIVER request to the modem, and wait for it to complete. */
 404static void ipa_client_init_driver_work(struct work_struct *work)
 405{
 406        unsigned long timeout = msecs_to_jiffies(QMI_INIT_DRIVER_TIMEOUT);
 407        const struct ipa_init_modem_driver_req *req;
 408        struct ipa_qmi *ipa_qmi;
 409        struct qmi_handle *qmi;
 410        struct qmi_txn txn;
 411        struct device *dev;
 412        struct ipa *ipa;
 413        int ret;
 414
 415        ipa_qmi = container_of(work, struct ipa_qmi, init_driver_work);
 416        qmi = &ipa_qmi->client_handle,
 417
 418        ipa = container_of(ipa_qmi, struct ipa, qmi);
 419        dev = &ipa->pdev->dev;
 420
 421        ret = qmi_txn_init(qmi, &txn, NULL, NULL);
 422        if (ret < 0) {
 423                dev_err(dev, "error %d preparing init driver request\n", ret);
 424                return;
 425        }
 426
 427        /* Send the request, and if successful wait for its response */
 428        req = init_modem_driver_req(ipa_qmi);
 429        ret = qmi_send_request(qmi, &ipa_qmi->modem_sq, &txn,
 430                               IPA_QMI_INIT_DRIVER, IPA_QMI_INIT_DRIVER_REQ_SZ,
 431                               ipa_init_modem_driver_req_ei, req);
 432        if (ret)
 433                dev_err(dev, "error %d sending init driver request\n", ret);
 434        else if ((ret = qmi_txn_wait(&txn, timeout)))
 435                dev_err(dev, "error %d awaiting init driver response\n", ret);
 436
 437        if (!ret) {
 438                ipa_qmi->modem_ready = true;
 439                ipa_qmi_ready(ipa_qmi);         /* We might be ready now */
 440        } else {
 441                /* If any error occurs we need to cancel the transaction */
 442                qmi_txn_cancel(&txn);
 443        }
 444}
 445
 446/* The modem server is now available.  We will send an INIT_DRIVER request
 447 * to the modem, but can't wait for it to complete in this callback thread.
 448 * Schedule a worker on the global workqueue to do that for us.
 449 */
 450static int
 451ipa_client_new_server(struct qmi_handle *qmi, struct qmi_service *svc)
 452{
 453        struct ipa_qmi *ipa_qmi;
 454
 455        ipa_qmi = container_of(qmi, struct ipa_qmi, client_handle);
 456
 457        ipa_qmi->modem_sq.sq_family = AF_QIPCRTR;
 458        ipa_qmi->modem_sq.sq_node = svc->node;
 459        ipa_qmi->modem_sq.sq_port = svc->port;
 460
 461        schedule_work(&ipa_qmi->init_driver_work);
 462
 463        return 0;
 464}
 465
 466static struct qmi_ops ipa_client_ops = {
 467        .new_server     = ipa_client_new_server,
 468};
 469
 470/* This is called by ipa_setup().  We can be informed via remoteproc that
 471 * the modem has shut down, in which case this function will be called
 472 * again to prepare for it coming back up again.
 473 */
 474int ipa_qmi_setup(struct ipa *ipa)
 475{
 476        struct ipa_qmi *ipa_qmi = &ipa->qmi;
 477        int ret;
 478
 479        ipa_qmi->initial_boot = true;
 480
 481        /* The server handle is used to handle the DRIVER_INIT_COMPLETE
 482         * request on the first modem boot.  It also receives the
 483         * INDICATION_REGISTER request on the first boot and (optionally)
 484         * subsequent boots.  The INIT_COMPLETE indication message is
 485         * sent over the server handle if requested.
 486         */
 487        ret = qmi_handle_init(&ipa_qmi->server_handle,
 488                              IPA_QMI_SERVER_MAX_RCV_SZ, &ipa_server_ops,
 489                              ipa_server_msg_handlers);
 490        if (ret)
 491                return ret;
 492
 493        ret = qmi_add_server(&ipa_qmi->server_handle, IPA_HOST_SERVICE_SVC_ID,
 494                             IPA_HOST_SVC_VERS, IPA_HOST_SERVICE_INS_ID);
 495        if (ret)
 496                goto err_server_handle_release;
 497
 498        /* The client handle is only used for sending an INIT_DRIVER request
 499         * to the modem, and receiving its response message.
 500         */
 501        ret = qmi_handle_init(&ipa_qmi->client_handle,
 502                              IPA_QMI_CLIENT_MAX_RCV_SZ, &ipa_client_ops,
 503                              ipa_client_msg_handlers);
 504        if (ret)
 505                goto err_server_handle_release;
 506
 507        /* We need this ready before the service lookup is added */
 508        INIT_WORK(&ipa_qmi->init_driver_work, ipa_client_init_driver_work);
 509
 510        ret = qmi_add_lookup(&ipa_qmi->client_handle, IPA_MODEM_SERVICE_SVC_ID,
 511                             IPA_MODEM_SVC_VERS, IPA_MODEM_SERVICE_INS_ID);
 512        if (ret)
 513                goto err_client_handle_release;
 514
 515        return 0;
 516
 517err_client_handle_release:
 518        /* Releasing the handle also removes registered lookups */
 519        qmi_handle_release(&ipa_qmi->client_handle);
 520        memset(&ipa_qmi->client_handle, 0, sizeof(ipa_qmi->client_handle));
 521err_server_handle_release:
 522        /* Releasing the handle also removes registered services */
 523        qmi_handle_release(&ipa_qmi->server_handle);
 524        memset(&ipa_qmi->server_handle, 0, sizeof(ipa_qmi->server_handle));
 525
 526        return ret;
 527}
 528
 529void ipa_qmi_teardown(struct ipa *ipa)
 530{
 531        cancel_work_sync(&ipa->qmi.init_driver_work);
 532
 533        qmi_handle_release(&ipa->qmi.client_handle);
 534        memset(&ipa->qmi.client_handle, 0, sizeof(ipa->qmi.client_handle));
 535
 536        qmi_handle_release(&ipa->qmi.server_handle);
 537        memset(&ipa->qmi.server_handle, 0, sizeof(ipa->qmi.server_handle));
 538}
 539