/* BEGIN_ICS_COPYRIGHT5 ****************************************

Copyright (c) 2015-2017, Intel Corporation

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modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,

      this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright

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 * ** END_ICS_COPYRIGHT5   ****************************************/

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

* 

* FILE NAME

*      vs_pool_common.c

*

* DESCRIPTION

*      This file contains vs_pool common routines.

*

* DATA STRUCTURES

*

* FUNCTIONS

*

* DEPENDENCIES

*

*

* HISTORY

*

* NAME      DATE        REMARKS

* DKJ       03/06/02    Initial creation of file.

* DKJ       03/26/02    LINT cleanup

* DKJ       04/01/02    PR1676. OS API 2.0g updates

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

#include <cs_g.h>

#include "cs_log.h"

#define function __FUNCTION__

#ifdef LOCAL_MOD_ID

#undef LOCAL_MOD_ID

#endif

#define LOCAL_MOD_ID VIEO_CS_MOD_ID

extern Status_t vs_implpool_create (Pool_t *, uint32_t,

				    unsigned char *, void *, size_t);

extern Status_t vs_implpool_delete (Pool_t *);

extern Status_t vs_implpool_alloc (Pool_t *, size_t, void **);

extern Status_t vs_implpool_free (Pool_t *, void *);

extern Status_t vs_implpool_size (Pool_t *, uint64_t *);

#define VSPOOL_MAGIC ((uint32_t) 0xDCADFEEDU)

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

*

* FUNCTION

*    vs_pool_create

*

* DESCRIPTION

*    Does fundamental common validation for vs_pool_create

*    parameters and invokes environment specific implmentation.

*

* INPUTS

*

* OUTPUTS

*      Status_t - On success VSTATUS_OK is returned, otherwise

*      the cause of the error.

*

*

* HISTORY

*

*   NAME    DATE        REMARKS

*   DKJ     03/07/02    Initial creation of function.

*   DKJ     03/21/02    Updated prototype

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

Status_t

vs_pool_create (Pool_t * handle, uint32_t options, 

		    unsigned char * name, void *address, size_t size)

{

  Status_t rc;

  size_t namesize;

  const uint32_t valid_options = 0;

  IB_ENTER (function, (unint) handle, options, (unint) address,

	    (uint32_t) size);

  if (handle == 0)

    {

      IB_LOG_ERROR0 ("handle is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  (void) memset (handle, 0, sizeof (Pool_t));

#if USE_POOL_LOCK

  rc = vs_lock_init (&handle->lock, VLOCK_LOCKED, VLOCK_THREAD);

  if (rc != VSTATUS_OK)

    {

      IB_LOG_ERRORRC("vs_lock_init failed rc:", rc);

      IB_EXIT (function, VSTATUS_NOMEM);

      return VSTATUS_NOMEM;

    }

#endif /* USE_POOL_LOCK */

  if (name == 0)

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

      IB_LOG_ERROR0 ("name is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  for (namesize = (size_t) 0U; namesize < sizeof (handle->name); namesize++)

    {

      handle->name[namesize] = name[namesize];

      if (name[namesize] == (unsigned char) 0x00U)

	{

	  break;

	}

    }

  if (namesize >= sizeof (handle->name))

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

      IB_LOG_ERROR0 ("name doesn't contain a terminator");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if ((options & ~valid_options) != (uint32_t) 0x00U)

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

      IB_LOG_ERROR ("Invalid options specified: ", options);

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  handle->options = options;

  if (size == (size_t) 0x00U)

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

      IB_LOG_ERROR0 ("Pool size is zero");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#ifdef __VXWORKS__

  /* cap size on VxWorks only */

  if (size > (size_t) 0xFFFFFFF0U)

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

      IB_LOG_ERROR ("Pool size is too big: high:", (uint32_t) (size));

      IB_LOG_ERROR ("Pool size is too big: low:", (uint32_t) (size));

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#endif

  handle->pagesize = vs_pool_page_size ();

  if ((options & VMEM_PAGE) == VMEM_PAGE)

    {

      if (size < handle->pagesize)

	{

#if USE_POOL_LOCK

	  (void) vs_unlock (&handle->lock);

	  (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

	  IB_LOG_ERROR ("size is less than pagesize:", size);

	  IB_EXIT (function, VSTATUS_NOMEM);

	  return VSTATUS_NOMEM;

	}

    }

  rc = vs_implpool_create (handle, options, name, address, size);

  if (rc == VSTATUS_OK)

    {

      handle->magic = VSPOOL_MAGIC;

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

#endif /* USE_POOL_LOCK */

    }

  else

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

    }

  IB_EXIT (function, rc);

  return rc;

}

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

*

* FUNCTION

*    vs_pool_delete

*

* DESCRIPTION

*    Does fundamental common validation for vs_pool_delete

*    parameters and invokes environment specific implmentation.

*

* INPUTS

*

* OUTPUTS

*      Status_t - On success VSTATUS_OK is returned, otherwise

*      the cause of the error.

*

*

* HISTORY

*

*   NAME    DATE        REMARKS

*   DKJ     03/07/02    Initial creation of function.

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

Status_t

vs_pool_delete (Pool_t * handle)

{

  Status_t rc;

  IB_ENTER (function, (unint) handle, (uint32_t) 0U, (uint32_t) 0U,

	    (uint32_t) 0U);

  if (handle == 0)

    {

      IB_LOG_ERROR0 ("handle is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (handle->magic != VSPOOL_MAGIC)

    {

      IB_LOG_ERRORX ("invalid handle magic:", handle->magic);

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#if USE_POOL_LOCK

  rc = vs_lock (&handle->lock);

  if (rc != VSTATUS_OK)

    {

      IB_LOG_ERRORRC("vs_lock failed rc:", rc);

      IB_EXIT (function, VSTATUS_NXIO);

      return VSTATUS_NXIO;

    }

#endif /* USE_POOL_LOCK */

  rc = vs_implpool_delete (handle);

  if (rc == VSTATUS_OK)

    {

      handle->magic = ~VSPOOL_MAGIC;

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

      (void) vs_lock_delete (&handle->lock);

#endif /* USE_POOL_LOCK */

    }

  else

    {

#if USE_POOL_LOCK

      (void) vs_unlock (&handle->lock);

#endif /* USE_POOL_LOCK */

    }

  (void) memset (handle, 0, sizeof (Pool_t));

  IB_EXIT (function, rc);

  return rc;

}

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

*

* FUNCTION

*    vs_pool_alloc

*

* DESCRIPTION

*    Does fundamental common validation for vs_pool_alloc

*    parameters and invokes environment specific implmentation.

*

* INPUTS

*

* OUTPUTS

*      Status_t - On success VSTATUS_OK is returned, otherwise

*      the cause of the error.

*

*

* HISTORY

*

*   NAME    DATE        REMARKS

*   DKJ     03/07/02    Initial creation of function.

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

Status_t

vs_pool_alloc (Pool_t * handle, size_t length, void **loc)

{

  Status_t rc;

  IB_ENTER (function, (unint) handle, (uint32_t) length, (unint) loc,

	    (uint32_t) 0U);

  if (handle == 0)

    {

      IB_LOG_ERROR0 ("handle is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (handle->magic != VSPOOL_MAGIC)

    {

      IB_LOG_ERRORX ("invalid handle magic:", handle->magic);

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (loc == 0)

    {

      IB_LOG_ERROR0 ("loc is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (length == (size_t) 0x00U)

    {

      IB_LOG_ERROR0 ("length is zero");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#if USE_POOL_LOCK

  rc = vs_lock (&handle->lock);

  if (rc != VSTATUS_OK)

    {

      IB_LOG_ERRORRC("vs_lock failed rc:", rc);

      IB_EXIT (function, VSTATUS_NXIO);

      return VSTATUS_NXIO;

    }

#endif /* USE_POOL_LOCK */

  rc = vs_implpool_alloc (handle, length, loc);

#if USE_POOL_LOCK

  (void) vs_unlock (&handle->lock);

#endif /* USE_POOL_LOCK */

  IB_EXIT (function, rc);

  return rc;

}

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

*

* FUNCTION

*    vs_pool_free

*

* DESCRIPTION

*    Does fundamental common validation for vs_pool_free

*    parameters and invokes environment specific implmentation.

*

* INPUTS

*

* OUTPUTS

*      Status_t - On success VSTATUS_OK is returned, otherwise

*      the cause of the error.

*

*

* HISTORY

*

*   NAME    DATE        REMARKS

*   DKJ     03/07/02    Initial creation of function.

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

Status_t

vs_pool_free (Pool_t * handle, void *loc)

{

  Status_t rc;

  IB_ENTER (function, (unint) handle, (unint) loc, (uint32_t) 0U,

	    (uint32_t) 0U);

  if (handle == 0)

    {

      IB_LOG_ERROR0 ("handle is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (handle->magic != VSPOOL_MAGIC)

    {

      IB_LOG_ERRORX ("invalid handle magic:", handle->magic);

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (loc == 0)

    {

      IB_LOG_ERROR0 ("loc is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#if USE_POOL_LOCK

  rc = vs_lock (&handle->lock);

  if (rc != VSTATUS_OK)

    {

      IB_LOG_ERRORRC("vs_lock failed rc:", rc);

      IB_EXIT (function, VSTATUS_NXIO);

      return VSTATUS_NXIO;

    }

#endif /* USE_POOL_LOCK */

  rc = vs_implpool_free (handle, loc);

#if USE_POOL_LOCK

  (void) vs_unlock (&handle->lock);

#endif /* USE_POOL_LOCK */

  IB_EXIT (function, rc);

  return rc;

}

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

*

* FUNCTION

*    vs_pool_size

*

* DESCRIPTION

*    Does fundamental common validation for vs_pool_size

*    parameters and invokes environment specific implmentation.

*

* INPUTS

*

* OUTPUTS

*      number of bytes allocated from pool.

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

Status_t

vs_pool_size (Pool_t * handle, uint64_t *numBytesAlloc)

{

  Status_t rc;

  IB_ENTER (function, (unint) handle, 0, 0, 0);

  if (handle == 0)

    {

      IB_LOG_ERROR0 ("handle is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (handle->magic != VSPOOL_MAGIC)

    {

      IB_LOG_ERRORX ("invalid handle magic:", handle->magic);

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

  if (numBytesAlloc == 0)

    {

      IB_LOG_ERROR0 ("numBytesAlloc is null");

      IB_EXIT (function, VSTATUS_ILLPARM);

      return VSTATUS_ILLPARM;

    }

#if USE_POOL_LOCK

  rc = vs_lock (&handle->lock);

  if (rc != VSTATUS_OK)

    {

      IB_LOG_ERRORRC("vs_lock failed rc:", rc);

	  *numBytesAlloc = 0;

      IB_EXIT (function, VSTATUS_NXIO);

      return VSTATUS_NXIO;

    }

#endif /* USE_POOL_LOCK */

  rc = vs_implpool_size (handle, numBytesAlloc);

#if USE_POOL_LOCK

  (void) vs_unlock (&handle->lock);

#endif /* USE_POOL_LOCK */

  IB_EXIT (function, rc);

  return rc;

}