drivers/staging/octeon/cvmx-helper-fpa.h

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2008 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 /**
  29  * @file
  30  *
  31  * Helper functions for FPA setup.
  32  *
  33  */
  34 #ifndef __CVMX_HELPER_H_FPA__
  35 #define __CVMX_HELPER_H_FPA__
  36
  37 /**
  38  * Allocate memory and initialize the FPA pools using memory
  39  * from cvmx-bootmem. Sizes of each element in the pools is
  40  * controlled by the cvmx-config.h header file. Specifying
  41  * zero for any parameter will cause that FPA pool to not be
  42  * setup. This is useful if you aren't using some of the
  43  * hardware and want to save memory.
  44  *
  45  * @packet_buffers:
  46  *               Number of packet buffers to allocate
  47  * @work_queue_entries:
  48  *               Number of work queue entries
  49  * @pko_buffers:
  50  *               PKO Command buffers. You should at minimum have two per
  51  *               each PKO queue.
  52  * @tim_buffers:
  53  *               TIM ring buffer command queues. At least two per timer bucket
  54  *               is recommened.
  55  * @dfa_buffers:
  56  *               DFA command buffer. A relatively small (32 for example)
  57  *               number should work.
  58  * Returns Zero on success, non-zero if out of memory
  59  */
  60 extern int cvmx_helper_initialize_fpa(int packet_buffers,
  61                                       int work_queue_entries, int pko_buffers,
  62                                       int tim_buffers, int dfa_buffers);
  63
  64 #endif /* __CVMX_HELPER_H__ */