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hpimsgx.c

/******************************************************************************

    AudioScience HPI driver
    Copyright (C) 1997-2010  AudioScience Inc. <support@audioscience.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of version 2 of the GNU General Public License as
    published by the Free Software Foundation;

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Extended Message Function With Response Cacheing

(C) Copyright AudioScience Inc. 2002
*****************************************************************************/
#define SOURCEFILE_NAME "hpimsgx.c"
#include "hpi_internal.h"
#include "hpimsginit.h"
#include "hpimsgx.h"
#include "hpidebug.h"

static struct pci_device_id asihpi_pci_tbl[] = {
#include "hpipcida.h"
};

static struct hpios_spinlock msgx_lock;

static hpi_handler_func *hpi_entry_points[HPI_MAX_ADAPTERS];

static hpi_handler_func *hpi_lookup_entry_point_function(const struct hpi_pci
      *pci_info)
{

      int i;

      for (i = 0; asihpi_pci_tbl[i].vendor != 0; i++) {
            if (asihpi_pci_tbl[i].vendor != PCI_ANY_ID
                  && asihpi_pci_tbl[i].vendor != pci_info->vendor_id)
                  continue;
            if (asihpi_pci_tbl[i].device != PCI_ANY_ID
                  && asihpi_pci_tbl[i].device != pci_info->device_id)
                  continue;
            if (asihpi_pci_tbl[i].subvendor != PCI_ANY_ID
                  && asihpi_pci_tbl[i].subvendor !=
                  pci_info->subsys_vendor_id)
                  continue;
            if (asihpi_pci_tbl[i].subdevice != PCI_ANY_ID
                  && asihpi_pci_tbl[i].subdevice !=
                  pci_info->subsys_device_id)
                  continue;

            HPI_DEBUG_LOG(DEBUG, " %x,%lu\n", i,
                  asihpi_pci_tbl[i].driver_data);
            return (hpi_handler_func *) asihpi_pci_tbl[i].driver_data;
      }

      return NULL;
}

static inline void hw_entry_point(struct hpi_message *phm,
      struct hpi_response *phr)
{

      hpi_handler_func *ep;

      if (phm->adapter_index < HPI_MAX_ADAPTERS) {
            ep = (hpi_handler_func *) hpi_entry_points[phm->
                  adapter_index];
            if (ep) {
                  HPI_DEBUG_MESSAGE(DEBUG, phm);
                  ep(phm, phr);
                  HPI_DEBUG_RESPONSE(phr);
                  return;
            }
      }
      hpi_init_response(phr, phm->object, phm->function,
            HPI_ERROR_PROCESSING_MESSAGE);
}

static void adapter_open(struct hpi_message *phm, struct hpi_response *phr);
static void adapter_close(struct hpi_message *phm, struct hpi_response *phr);

static void mixer_open(struct hpi_message *phm, struct hpi_response *phr);
static void mixer_close(struct hpi_message *phm, struct hpi_response *phr);

static void outstream_open(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner);
static void outstream_close(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner);
static void instream_open(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner);
static void instream_close(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner);

static void HPIMSGX__reset(u16 adapter_index);
static u16 HPIMSGX__init(struct hpi_message *phm, struct hpi_response *phr);
static void HPIMSGX__cleanup(u16 adapter_index, void *h_owner);

#ifndef DISABLE_PRAGMA_PACK1
#pragma pack(push, 1)
#endif

00110 struct hpi_subsys_response {
      struct hpi_response_header h;
      struct hpi_subsys_res s;
};

00115 struct hpi_adapter_response {
      struct hpi_response_header h;
      struct hpi_adapter_res a;
};

00120 struct hpi_mixer_response {
      struct hpi_response_header h;
      struct hpi_mixer_res m;
};

00125 struct hpi_stream_response {
      struct hpi_response_header h;
      struct hpi_stream_res d;
};

00130 struct adapter_info {
      u16 type;
      u16 num_instreams;
      u16 num_outstreams;
};

00136 struct asi_open_state {
      int open_flag;
      void *h_owner;
};

#ifndef DISABLE_PRAGMA_PACK1
#pragma pack(pop)
#endif

/* Globals */
static struct hpi_adapter_response rESP_HPI_ADAPTER_OPEN[HPI_MAX_ADAPTERS];

static struct hpi_stream_response
      rESP_HPI_OSTREAM_OPEN[HPI_MAX_ADAPTERS][HPI_MAX_STREAMS];

static struct hpi_stream_response
      rESP_HPI_ISTREAM_OPEN[HPI_MAX_ADAPTERS][HPI_MAX_STREAMS];

static struct hpi_mixer_response rESP_HPI_MIXER_OPEN[HPI_MAX_ADAPTERS];

static struct hpi_subsys_response gRESP_HPI_SUBSYS_FIND_ADAPTERS;

static struct adapter_info aDAPTER_INFO[HPI_MAX_ADAPTERS];

/* use these to keep track of opens from user mode apps/DLLs */
static struct asi_open_state
      outstream_user_open[HPI_MAX_ADAPTERS][HPI_MAX_STREAMS];

static struct asi_open_state
      instream_user_open[HPI_MAX_ADAPTERS][HPI_MAX_STREAMS];

static void subsys_message(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{
      switch (phm->function) {
      case HPI_SUBSYS_GET_VERSION:
            hpi_init_response(phr, HPI_OBJ_SUBSYSTEM,
                  HPI_SUBSYS_GET_VERSION, 0);
            phr->u.s.version = HPI_VER >> 8;    /* return major.minor */
            phr->u.s.data = HPI_VER;      /* return major.minor.release */
            break;
      case HPI_SUBSYS_OPEN:
            /*do not propagate the message down the chain */
            hpi_init_response(phr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_OPEN, 0);
            break;
      case HPI_SUBSYS_CLOSE:
            /*do not propagate the message down the chain */
            hpi_init_response(phr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CLOSE,
                  0);
            HPIMSGX__cleanup(HPIMSGX_ALLADAPTERS, h_owner);
            break;
      case HPI_SUBSYS_DRIVER_LOAD:
            /* Initialize this module's internal state */
            hpios_msgxlock_init(&msgx_lock);
            memset(&hpi_entry_points, 0, sizeof(hpi_entry_points));
            hpios_locked_mem_init();
            /* Init subsys_findadapters response to no-adapters */
            HPIMSGX__reset(HPIMSGX_ALLADAPTERS);
            hpi_init_response(phr, HPI_OBJ_SUBSYSTEM,
                  HPI_SUBSYS_DRIVER_LOAD, 0);
            /* individual HPIs dont implement driver load */
            HPI_COMMON(phm, phr);
            break;
      case HPI_SUBSYS_DRIVER_UNLOAD:
            HPI_COMMON(phm, phr);
            HPIMSGX__cleanup(HPIMSGX_ALLADAPTERS, h_owner);
            hpios_locked_mem_free_all();
            hpi_init_response(phr, HPI_OBJ_SUBSYSTEM,
                  HPI_SUBSYS_DRIVER_UNLOAD, 0);
            return;

      case HPI_SUBSYS_GET_INFO:
            HPI_COMMON(phm, phr);
            break;

      case HPI_SUBSYS_FIND_ADAPTERS:
            memcpy(phr, &gRESP_HPI_SUBSYS_FIND_ADAPTERS,
                  sizeof(gRESP_HPI_SUBSYS_FIND_ADAPTERS));
            break;
      case HPI_SUBSYS_GET_NUM_ADAPTERS:
            memcpy(phr, &gRESP_HPI_SUBSYS_FIND_ADAPTERS,
                  sizeof(gRESP_HPI_SUBSYS_FIND_ADAPTERS));
            phr->function = HPI_SUBSYS_GET_NUM_ADAPTERS;
            break;
      case HPI_SUBSYS_GET_ADAPTER:
            {
                  int count = phm->adapter_index;
                  int index = 0;
                  hpi_init_response(phr, HPI_OBJ_SUBSYSTEM,
                        HPI_SUBSYS_GET_ADAPTER, 0);

                  /* This is complicated by the fact that we want to
                   * "skip" 0's in the adapter list.
                   * First, make sure we are pointing to a
                   * non-zero adapter type.
                   */
                  while (gRESP_HPI_SUBSYS_FIND_ADAPTERS.
                        s.aw_adapter_list[index] == 0) {
                        index++;
                        if (index >= HPI_MAX_ADAPTERS)
                              break;
                  }
                  while (count) {
                        /* move on to the next adapter */
                        index++;
                        if (index >= HPI_MAX_ADAPTERS)
                              break;
                        while (gRESP_HPI_SUBSYS_FIND_ADAPTERS.
                              s.aw_adapter_list[index] == 0) {
                              index++;
                              if (index >= HPI_MAX_ADAPTERS)
                                    break;
                        }
                        count--;
                  }

                  if (index < HPI_MAX_ADAPTERS) {
                        phr->u.s.adapter_index = (u16)index;
                        phr->u.s.aw_adapter_list[0] =
                              gRESP_HPI_SUBSYS_FIND_ADAPTERS.
                              s.aw_adapter_list[index];
                  } else {
                        phr->u.s.adapter_index = 0;
                        phr->u.s.aw_adapter_list[0] = 0;
                        phr->error = HPI_ERROR_BAD_ADAPTER_NUMBER;
                  }
                  break;
            }
      case HPI_SUBSYS_CREATE_ADAPTER:
            HPIMSGX__init(phm, phr);
            break;
      case HPI_SUBSYS_DELETE_ADAPTER:
            HPIMSGX__cleanup(phm->adapter_index, h_owner);
            {
                  struct hpi_message hm;
                  struct hpi_response hr;
                  /* call to HPI_ADAPTER_CLOSE */
                  hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
                        HPI_ADAPTER_CLOSE);
                  hm.adapter_index = phm->adapter_index;
                  hw_entry_point(&hm, &hr);
            }
            hw_entry_point(phm, phr);
            gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.
                  aw_adapter_list[phm->adapter_index]
                  = 0;
            hpi_entry_points[phm->adapter_index] = NULL;
            break;
      default:
            hw_entry_point(phm, phr);
            break;
      }
}

static void adapter_message(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{
      switch (phm->function) {
      case HPI_ADAPTER_OPEN:
            adapter_open(phm, phr);
            break;
      case HPI_ADAPTER_CLOSE:
            adapter_close(phm, phr);
            break;
      default:
            hw_entry_point(phm, phr);
            break;
      }
}

static void mixer_message(struct hpi_message *phm, struct hpi_response *phr)
{
      switch (phm->function) {
      case HPI_MIXER_OPEN:
            mixer_open(phm, phr);
            break;
      case HPI_MIXER_CLOSE:
            mixer_close(phm, phr);
            break;
      default:
            hw_entry_point(phm, phr);
            break;
      }
}

static void outstream_message(struct hpi_message *phm,
      struct hpi_response *phr, void *h_owner)
{
      if (phm->obj_index >= aDAPTER_INFO[phm->adapter_index].num_outstreams) {
            hpi_init_response(phr, HPI_OBJ_OSTREAM, phm->function,
                  HPI_ERROR_INVALID_OBJ_INDEX);
            return;
      }

      switch (phm->function) {
      case HPI_OSTREAM_OPEN:
            outstream_open(phm, phr, h_owner);
            break;
      case HPI_OSTREAM_CLOSE:
            outstream_close(phm, phr, h_owner);
            break;
      default:
            hw_entry_point(phm, phr);
            break;
      }
}

static void instream_message(struct hpi_message *phm,
      struct hpi_response *phr, void *h_owner)
{
      if (phm->obj_index >= aDAPTER_INFO[phm->adapter_index].num_instreams) {
            hpi_init_response(phr, HPI_OBJ_ISTREAM, phm->function,
                  HPI_ERROR_INVALID_OBJ_INDEX);
            return;
      }

      switch (phm->function) {
      case HPI_ISTREAM_OPEN:
            instream_open(phm, phr, h_owner);
            break;
      case HPI_ISTREAM_CLOSE:
            instream_close(phm, phr, h_owner);
            break;
      default:
            hw_entry_point(phm, phr);
            break;
      }
}

/* NOTE: HPI_Message() must be defined in the driver as a wrapper for
 * HPI_MessageEx so that functions in hpifunc.c compile.
 */
void hpi_send_recv_ex(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{
      HPI_DEBUG_MESSAGE(DEBUG, phm);

      if (phm->type != HPI_TYPE_MESSAGE) {
            hpi_init_response(phr, phm->object, phm->function,
                  HPI_ERROR_INVALID_TYPE);
            return;
      }

      if (phm->adapter_index >= HPI_MAX_ADAPTERS
            && phm->adapter_index != HPIMSGX_ALLADAPTERS) {
            hpi_init_response(phr, phm->object, phm->function,
                  HPI_ERROR_BAD_ADAPTER_NUMBER);
            return;
      }

      switch (phm->object) {
      case HPI_OBJ_SUBSYSTEM:
            subsys_message(phm, phr, h_owner);
            break;

      case HPI_OBJ_ADAPTER:
            adapter_message(phm, phr, h_owner);
            break;

      case HPI_OBJ_MIXER:
            mixer_message(phm, phr);
            break;

      case HPI_OBJ_OSTREAM:
            outstream_message(phm, phr, h_owner);
            break;

      case HPI_OBJ_ISTREAM:
            instream_message(phm, phr, h_owner);
            break;

      default:
            hw_entry_point(phm, phr);
            break;
      }
      HPI_DEBUG_RESPONSE(phr);
#if 1
      if (phr->error >= HPI_ERROR_BACKEND_BASE) {
            void *ep = NULL;
            char *ep_name;

            HPI_DEBUG_MESSAGE(ERROR, phm);

            if (phm->adapter_index < HPI_MAX_ADAPTERS)
                  ep = hpi_entry_points[phm->adapter_index];

            /* Don't need this? Have adapter index in debug info
               Know at driver load time index->backend mapping */
            if (ep == HPI_6000)
                  ep_name = "HPI_6000";
            else if (ep == HPI_6205)
                  ep_name = "HPI_6205";
            else
                  ep_name = "unknown";

            HPI_DEBUG_LOG(ERROR, "HPI %s response - error# %d\n", ep_name,
                  phr->error);

            if (hpi_debug_level >= HPI_DEBUG_LEVEL_VERBOSE)
                  hpi_debug_data((u16 *)phm,
                        sizeof(*phm) / sizeof(u16));
      }
#endif
}

static void adapter_open(struct hpi_message *phm, struct hpi_response *phr)
{
      HPI_DEBUG_LOG(VERBOSE, "adapter_open\n");
      memcpy(phr, &rESP_HPI_ADAPTER_OPEN[phm->adapter_index],
            sizeof(rESP_HPI_ADAPTER_OPEN[0]));
}

static void adapter_close(struct hpi_message *phm, struct hpi_response *phr)
{
      HPI_DEBUG_LOG(VERBOSE, "adapter_close\n");
      hpi_init_response(phr, HPI_OBJ_ADAPTER, HPI_ADAPTER_CLOSE, 0);
}

static void mixer_open(struct hpi_message *phm, struct hpi_response *phr)
{
      memcpy(phr, &rESP_HPI_MIXER_OPEN[phm->adapter_index],
            sizeof(rESP_HPI_MIXER_OPEN[0]));
}

static void mixer_close(struct hpi_message *phm, struct hpi_response *phr)
{
      hpi_init_response(phr, HPI_OBJ_MIXER, HPI_MIXER_CLOSE, 0);
}

static void instream_open(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{

      struct hpi_message hm;
      struct hpi_response hr;

      hpi_init_response(phr, HPI_OBJ_ISTREAM, HPI_ISTREAM_OPEN, 0);

      hpios_msgxlock_lock(&msgx_lock);

      if (instream_user_open[phm->adapter_index][phm->obj_index].open_flag)
            phr->error = HPI_ERROR_OBJ_ALREADY_OPEN;
      else if (rESP_HPI_ISTREAM_OPEN[phm->adapter_index]
            [phm->obj_index].h.error)
            memcpy(phr,
                  &rESP_HPI_ISTREAM_OPEN[phm->adapter_index][phm->
                        obj_index],
                  sizeof(rESP_HPI_ISTREAM_OPEN[0][0]));
      else {
            instream_user_open[phm->adapter_index][phm->
                  obj_index].open_flag = 1;
            hpios_msgxlock_un_lock(&msgx_lock);

            /* issue a reset */
            hpi_init_message_response(&hm, &hr, HPI_OBJ_ISTREAM,
                  HPI_ISTREAM_RESET);
            hm.adapter_index = phm->adapter_index;
            hm.obj_index = phm->obj_index;
            hw_entry_point(&hm, &hr);

            hpios_msgxlock_lock(&msgx_lock);
            if (hr.error) {
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 0;
                  phr->error = hr.error;
            } else {
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 1;
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = h_owner;
                  memcpy(phr,
                        &rESP_HPI_ISTREAM_OPEN[phm->adapter_index]
                        [phm->obj_index],
                        sizeof(rESP_HPI_ISTREAM_OPEN[0][0]));
            }
      }
      hpios_msgxlock_un_lock(&msgx_lock);
}

static void instream_close(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{

      struct hpi_message hm;
      struct hpi_response hr;

      hpi_init_response(phr, HPI_OBJ_ISTREAM, HPI_ISTREAM_CLOSE, 0);

      hpios_msgxlock_lock(&msgx_lock);
      if (h_owner ==
            instream_user_open[phm->adapter_index][phm->
                  obj_index].h_owner) {
            /* HPI_DEBUG_LOG(INFO,"closing adapter %d "
               "instream %d owned by %p\n",
               phm->wAdapterIndex, phm->wObjIndex, hOwner); */
            instream_user_open[phm->adapter_index][phm->
                  obj_index].h_owner = NULL;
            hpios_msgxlock_un_lock(&msgx_lock);
            /* issue a reset */
            hpi_init_message_response(&hm, &hr, HPI_OBJ_ISTREAM,
                  HPI_ISTREAM_RESET);
            hm.adapter_index = phm->adapter_index;
            hm.obj_index = phm->obj_index;
            hw_entry_point(&hm, &hr);
            hpios_msgxlock_lock(&msgx_lock);
            if (hr.error) {
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = h_owner;
                  phr->error = hr.error;
            } else {
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 0;
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = NULL;
            }
      } else {
            HPI_DEBUG_LOG(WARNING,
                  "%p trying to close %d instream %d owned by %p\n",
                  h_owner, phm->adapter_index, phm->obj_index,
                  instream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner);
            phr->error = HPI_ERROR_OBJ_NOT_OPEN;
      }
      hpios_msgxlock_un_lock(&msgx_lock);
}

static void outstream_open(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{

      struct hpi_message hm;
      struct hpi_response hr;

      hpi_init_response(phr, HPI_OBJ_OSTREAM, HPI_OSTREAM_OPEN, 0);

      hpios_msgxlock_lock(&msgx_lock);

      if (outstream_user_open[phm->adapter_index][phm->obj_index].open_flag)
            phr->error = HPI_ERROR_OBJ_ALREADY_OPEN;
      else if (rESP_HPI_OSTREAM_OPEN[phm->adapter_index]
            [phm->obj_index].h.error)
            memcpy(phr,
                  &rESP_HPI_OSTREAM_OPEN[phm->adapter_index][phm->
                        obj_index],
                  sizeof(rESP_HPI_OSTREAM_OPEN[0][0]));
      else {
            outstream_user_open[phm->adapter_index][phm->
                  obj_index].open_flag = 1;
            hpios_msgxlock_un_lock(&msgx_lock);

            /* issue a reset */
            hpi_init_message_response(&hm, &hr, HPI_OBJ_OSTREAM,
                  HPI_OSTREAM_RESET);
            hm.adapter_index = phm->adapter_index;
            hm.obj_index = phm->obj_index;
            hw_entry_point(&hm, &hr);

            hpios_msgxlock_lock(&msgx_lock);
            if (hr.error) {
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 0;
                  phr->error = hr.error;
            } else {
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 1;
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = h_owner;
                  memcpy(phr,
                        &rESP_HPI_OSTREAM_OPEN[phm->adapter_index]
                        [phm->obj_index],
                        sizeof(rESP_HPI_OSTREAM_OPEN[0][0]));
            }
      }
      hpios_msgxlock_un_lock(&msgx_lock);
}

static void outstream_close(struct hpi_message *phm, struct hpi_response *phr,
      void *h_owner)
{

      struct hpi_message hm;
      struct hpi_response hr;

      hpi_init_response(phr, HPI_OBJ_OSTREAM, HPI_OSTREAM_CLOSE, 0);

      hpios_msgxlock_lock(&msgx_lock);

      if (h_owner ==
            outstream_user_open[phm->adapter_index][phm->
                  obj_index].h_owner) {
            /* HPI_DEBUG_LOG(INFO,"closing adapter %d "
               "outstream %d owned by %p\n",
               phm->wAdapterIndex, phm->wObjIndex, hOwner); */
            outstream_user_open[phm->adapter_index][phm->
                  obj_index].h_owner = NULL;
            hpios_msgxlock_un_lock(&msgx_lock);
            /* issue a reset */
            hpi_init_message_response(&hm, &hr, HPI_OBJ_OSTREAM,
                  HPI_OSTREAM_RESET);
            hm.adapter_index = phm->adapter_index;
            hm.obj_index = phm->obj_index;
            hw_entry_point(&hm, &hr);
            hpios_msgxlock_lock(&msgx_lock);
            if (hr.error) {
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = h_owner;
                  phr->error = hr.error;
            } else {
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].open_flag = 0;
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner = NULL;
            }
      } else {
            HPI_DEBUG_LOG(WARNING,
                  "%p trying to close %d outstream %d owned by %p\n",
                  h_owner, phm->adapter_index, phm->obj_index,
                  outstream_user_open[phm->adapter_index][phm->
                        obj_index].h_owner);
            phr->error = HPI_ERROR_OBJ_NOT_OPEN;
      }
      hpios_msgxlock_un_lock(&msgx_lock);
}

static u16 adapter_prepare(u16 adapter)
{
      struct hpi_message hm;
      struct hpi_response hr;

      /* Open the adapter and streams */
      u16 i;

      /* call to HPI_ADAPTER_OPEN */
      hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
            HPI_ADAPTER_OPEN);
      hm.adapter_index = adapter;
      hw_entry_point(&hm, &hr);
      memcpy(&rESP_HPI_ADAPTER_OPEN[adapter], &hr,
            sizeof(rESP_HPI_ADAPTER_OPEN[0]));
      if (hr.error)
            return hr.error;

      /* call to HPI_ADAPTER_GET_INFO */
      hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
            HPI_ADAPTER_GET_INFO);
      hm.adapter_index = adapter;
      hw_entry_point(&hm, &hr);
      if (hr.error)
            return hr.error;

      aDAPTER_INFO[adapter].num_outstreams = hr.u.a.num_outstreams;
      aDAPTER_INFO[adapter].num_instreams = hr.u.a.num_instreams;
      aDAPTER_INFO[adapter].type = hr.u.a.adapter_type;

      gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.aw_adapter_list[adapter] =
            hr.u.a.adapter_type;
      gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.num_adapters++;
      if (gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.num_adapters > HPI_MAX_ADAPTERS)
            gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.num_adapters =
                  HPI_MAX_ADAPTERS;

      /* call to HPI_OSTREAM_OPEN */
      for (i = 0; i < aDAPTER_INFO[adapter].num_outstreams; i++) {
            hpi_init_message_response(&hm, &hr, HPI_OBJ_OSTREAM,
                  HPI_OSTREAM_OPEN);
            hm.adapter_index = adapter;
            hm.obj_index = i;
            hw_entry_point(&hm, &hr);
            memcpy(&rESP_HPI_OSTREAM_OPEN[adapter][i], &hr,
                  sizeof(rESP_HPI_OSTREAM_OPEN[0][0]));
            outstream_user_open[adapter][i].open_flag = 0;
            outstream_user_open[adapter][i].h_owner = NULL;
      }

      /* call to HPI_ISTREAM_OPEN */
      for (i = 0; i < aDAPTER_INFO[adapter].num_instreams; i++) {
            hpi_init_message_response(&hm, &hr, HPI_OBJ_ISTREAM,
                  HPI_ISTREAM_OPEN);
            hm.adapter_index = adapter;
            hm.obj_index = i;
            hw_entry_point(&hm, &hr);
            memcpy(&rESP_HPI_ISTREAM_OPEN[adapter][i], &hr,
                  sizeof(rESP_HPI_ISTREAM_OPEN[0][0]));
            instream_user_open[adapter][i].open_flag = 0;
            instream_user_open[adapter][i].h_owner = NULL;
      }

      /* call to HPI_MIXER_OPEN */
      hpi_init_message_response(&hm, &hr, HPI_OBJ_MIXER, HPI_MIXER_OPEN);
      hm.adapter_index = adapter;
      hw_entry_point(&hm, &hr);
      memcpy(&rESP_HPI_MIXER_OPEN[adapter], &hr,
            sizeof(rESP_HPI_MIXER_OPEN[0]));

      return gRESP_HPI_SUBSYS_FIND_ADAPTERS.h.error;
}

static void HPIMSGX__reset(u16 adapter_index)
{
      int i;
      u16 adapter;
      struct hpi_response hr;

      if (adapter_index == HPIMSGX_ALLADAPTERS) {
            /* reset all responses to contain errors */
            hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM,
                  HPI_SUBSYS_FIND_ADAPTERS, 0);
            memcpy(&gRESP_HPI_SUBSYS_FIND_ADAPTERS, &hr,
                  sizeof(gRESP_HPI_SUBSYS_FIND_ADAPTERS));

            for (adapter = 0; adapter < HPI_MAX_ADAPTERS; adapter++) {

                  hpi_init_response(&hr, HPI_OBJ_ADAPTER,
                        HPI_ADAPTER_OPEN, HPI_ERROR_BAD_ADAPTER);
                  memcpy(&rESP_HPI_ADAPTER_OPEN[adapter], &hr,
                        sizeof(rESP_HPI_ADAPTER_OPEN[adapter]));

                  hpi_init_response(&hr, HPI_OBJ_MIXER, HPI_MIXER_OPEN,
                        HPI_ERROR_INVALID_OBJ);
                  memcpy(&rESP_HPI_MIXER_OPEN[adapter], &hr,
                        sizeof(rESP_HPI_MIXER_OPEN[adapter]));

                  for (i = 0; i < HPI_MAX_STREAMS; i++) {
                        hpi_init_response(&hr, HPI_OBJ_OSTREAM,
                              HPI_OSTREAM_OPEN,
                              HPI_ERROR_INVALID_OBJ);
                        memcpy(&rESP_HPI_OSTREAM_OPEN[adapter][i],
                              &hr,
                              sizeof(rESP_HPI_OSTREAM_OPEN[adapter]
                                    [i]));
                        hpi_init_response(&hr, HPI_OBJ_ISTREAM,
                              HPI_ISTREAM_OPEN,
                              HPI_ERROR_INVALID_OBJ);
                        memcpy(&rESP_HPI_ISTREAM_OPEN[adapter][i],
                              &hr,
                              sizeof(rESP_HPI_ISTREAM_OPEN[adapter]
                                    [i]));
                  }
            }
      } else if (adapter_index < HPI_MAX_ADAPTERS) {
            rESP_HPI_ADAPTER_OPEN[adapter_index].h.error =
                  HPI_ERROR_BAD_ADAPTER;
            rESP_HPI_MIXER_OPEN[adapter_index].h.error =
                  HPI_ERROR_INVALID_OBJ;
            for (i = 0; i < HPI_MAX_STREAMS; i++) {
                  rESP_HPI_OSTREAM_OPEN[adapter_index][i].h.error =
                        HPI_ERROR_INVALID_OBJ;
                  rESP_HPI_ISTREAM_OPEN[adapter_index][i].h.error =
                        HPI_ERROR_INVALID_OBJ;
            }
            if (gRESP_HPI_SUBSYS_FIND_ADAPTERS.
                  s.aw_adapter_list[adapter_index]) {
                  gRESP_HPI_SUBSYS_FIND_ADAPTERS.
                        s.aw_adapter_list[adapter_index] = 0;
                  gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.num_adapters--;
            }
      }
}

static u16 HPIMSGX__init(struct hpi_message *phm,
      /* HPI_SUBSYS_CREATE_ADAPTER structure with */
      /* resource list or NULL=find all */
      struct hpi_response *phr
      /* response from HPI_ADAPTER_GET_INFO */
      )
{
      hpi_handler_func *entry_point_func;
      struct hpi_response hr;

      if (gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.num_adapters >= HPI_MAX_ADAPTERS)
            return HPI_ERROR_BAD_ADAPTER_NUMBER;

      /* Init response here so we can pass in previous adapter list */
      hpi_init_response(&hr, phm->object, phm->function,
            HPI_ERROR_INVALID_OBJ);
      memcpy(hr.u.s.aw_adapter_list,
            gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.aw_adapter_list,
            sizeof(gRESP_HPI_SUBSYS_FIND_ADAPTERS.s.aw_adapter_list));

      entry_point_func =
            hpi_lookup_entry_point_function(phm->u.s.resource.r.pci);

      if (entry_point_func) {
            HPI_DEBUG_MESSAGE(DEBUG, phm);
            entry_point_func(phm, &hr);
      } else {
            phr->error = HPI_ERROR_PROCESSING_MESSAGE;
            return phr->error;
      }
      if (hr.error == 0) {
            /* the adapter was created succesfully
               save the mapping for future use */
            hpi_entry_points[hr.u.s.adapter_index] = entry_point_func;
            /* prepare adapter (pre-open streams etc.) */
            HPI_DEBUG_LOG(DEBUG,
                  "HPI_SUBSYS_CREATE_ADAPTER successful,"
                  " preparing adapter\n");
            adapter_prepare(hr.u.s.adapter_index);
      }
      memcpy(phr, &hr, hr.size);
      return phr->error;
}

static void HPIMSGX__cleanup(u16 adapter_index, void *h_owner)
{
      int i, adapter, adapter_limit;

      if (!h_owner)
            return;

      if (adapter_index == HPIMSGX_ALLADAPTERS) {
            adapter = 0;
            adapter_limit = HPI_MAX_ADAPTERS;
      } else {
            adapter = adapter_index;
            adapter_limit = adapter + 1;
      }

      for (; adapter < adapter_limit; adapter++) {
            /*      printk(KERN_INFO "Cleanup adapter #%d\n",wAdapter); */
            for (i = 0; i < HPI_MAX_STREAMS; i++) {
                  if (h_owner ==
                        outstream_user_open[adapter][i].h_owner) {
                        struct hpi_message hm;
                        struct hpi_response hr;

                        HPI_DEBUG_LOG(DEBUG,
                              "close adapter %d ostream %d\n",
                              adapter, i);

                        hpi_init_message_response(&hm, &hr,
                              HPI_OBJ_OSTREAM, HPI_OSTREAM_RESET);
                        hm.adapter_index = (u16)adapter;
                        hm.obj_index = (u16)i;
                        hw_entry_point(&hm, &hr);

                        hm.function = HPI_OSTREAM_HOSTBUFFER_FREE;
                        hw_entry_point(&hm, &hr);

                        hm.function = HPI_OSTREAM_GROUP_RESET;
                        hw_entry_point(&hm, &hr);

                        outstream_user_open[adapter][i].open_flag = 0;
                        outstream_user_open[adapter][i].h_owner =
                              NULL;
                  }
                  if (h_owner == instream_user_open[adapter][i].h_owner) {
                        struct hpi_message hm;
                        struct hpi_response hr;

                        HPI_DEBUG_LOG(DEBUG,
                              "close adapter %d istream %d\n",
                              adapter, i);

                        hpi_init_message_response(&hm, &hr,
                              HPI_OBJ_ISTREAM, HPI_ISTREAM_RESET);
                        hm.adapter_index = (u16)adapter;
                        hm.obj_index = (u16)i;
                        hw_entry_point(&hm, &hr);

                        hm.function = HPI_ISTREAM_HOSTBUFFER_FREE;
                        hw_entry_point(&hm, &hr);

                        hm.function = HPI_ISTREAM_GROUP_RESET;
                        hw_entry_point(&hm, &hr);

                        instream_user_open[adapter][i].open_flag = 0;
                        instream_user_open[adapter][i].h_owner = NULL;
                  }
            }
      }
}

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