text: /*! \file bcmbd_ccmdma.c
   *
   * CCMDMA driver APIs
   */
  /*
   * Copyright: (c) 2018 Broadcom. All Rights Reserved. "Broadcom" refers to 
   * Broadcom Limited and/or its subsidiaries.
   * 
   * Broadcom Switch Software License
   * 
   * This license governs the use of the accompanying Broadcom software. Your 
   * use of the software indicates your acceptance of the terms and conditions 
   * of this license. If you do not agree to the terms and conditions of this 
   * license, do not use the software.
   * 1. Definitions
   *    "Licensor" means any person or entity that distributes its Work.
   *    "Software" means the original work of authorship made available under 
   *    this license.
   *    "Work" means the Software and any additions to or derivative works of 
   *    the Software that are made available under this license.
   *    The terms "reproduce," "reproduction," "derivative works," and 
   *    "distribution" have the meaning as provided under U.S. copyright law.
   *    Works, including the Software, are "made available" under this license 
   *    by including in or with the Work either (a) a copyright notice 
   *    referencing the applicability of this license to the Work, or (b) a copy 
   *    of this license.
   * 2. Grant of Copyright License
   *    Subject to the terms and conditions of this license, each Licensor 
   *    grants to you a perpetual, worldwide, non-exclusive, and royalty-free 
   *    copyright license to reproduce, prepare derivative works of, publicly 
   *    display, publicly perform, sublicense and distribute its Work and any 
   *    resulting derivative works in any form.
   * 3. Grant of Patent License
   *    Subject to the terms and conditions of this license, each Licensor 
   *    grants to you a perpetual, worldwide, non-exclusive, and royalty-free 
   *    patent license to make, have made, use, offer to sell, sell, import, and 
   *    otherwise transfer its Work, in whole or in part. This patent license 
   *    applies only to the patent claims licensable by Licensor that would be 
   *    infringed by Licensor's Work (or portion thereof) individually and 
   *    excluding any combinations with any other materials or technology.
   *    If you institute patent litigation against any Licensor (including a 
   *    cross-claim or counterclaim in a lawsuit) to enforce any patents that 
   *    you allege are infringed by any Work, then your patent license from such 
   *    Licensor to the Work shall terminate as of the date such litigation is 
   *    filed.
   * 4. Redistribution
   *    You may reproduce or distribute the Work only if (a) you do so under 
   *    this License, (b) you include a complete copy of this License with your 
   *    distribution, and (c) you retain without modification any copyright, 
   *    patent, trademark, or attribution notices that are present in the Work.
   * 5. Derivative Works
   *    You may specify that additional or different terms apply to the use, 
   *    reproduction, and distribution of your derivative works of the Work 
   *    ("Your Terms") only if (a) Your Terms provide that the limitations of 
   *    Section 7 apply to your derivative works, and (b) you identify the 
   *    specific derivative works that are subject to Your Terms. 
   *    Notwithstanding Your Terms, this license (including the redistribution 
   *    requirements in Section 4) will continue to apply to the Work itself.
   * 6. Trademarks
   *    This license does not grant any rights to use any Licensor's or its 
   *    affiliates' names, logos, or trademarks, except as necessary to 
   *    reproduce the notices described in this license.
   * 7. Limitations
   *    Platform. The Work and any derivative works thereof may only be used, or 
   *    intended for use, with a Broadcom switch integrated circuit.
   *    No Reverse Engineering. You will not use the Work to disassemble, 
   *    reverse engineer, decompile, or attempt to ascertain the underlying 
   *    technology of a Broadcom switch integrated circuit.
   * 8. Termination
   *    If you violate any term of this license, then your rights under this 
   *    license (including the license grants of Sections 2 and 3) will 
   *    terminate immediately.
   * 9. Disclaimer of Warranty
   *    THE WORK IS PROVIDED "AS IS" WITHOUT WARRANTIES OR CONDITIONS OF ANY 
   *    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OR CONDITIONS OF 
   *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE OR 
   *    NON-INFRINGEMENT. YOU BEAR THE RISK OF UNDERTAKING ANY ACTIVITIES UNDER 
   *    THIS LICENSE. SOME STATES' CONSUMER LAWS DO NOT ALLOW EXCLUSION OF AN 
   *    IMPLIED WARRANTY, SO THIS DISCLAIMER MAY NOT APPLY TO YOU.
   * 10. Limitation of Liability
   *    EXCEPT AS PROHIBITED BY APPLICABLE LAW, IN NO EVENT AND UNDER NO LEGAL 
   *    THEORY, WHETHER IN TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE 
   *    SHALL ANY LICENSOR BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY DIRECT, 
   *    INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF 
   *    OR RELATED TO THIS LICENSE, THE USE OR INABILITY TO USE THE WORK 
   *    (INCLUDING BUT NOT LIMITED TO LOSS OF GOODWILL, BUSINESS INTERRUPTION, 
   *    LOST PROFITS OR DATA, COMPUTER FAILURE OR MALFUNCTION, OR ANY OTHER 
   *    COMMERCIAL DAMAGES OR LOSSES), EVEN IF THE LICENSOR HAS BEEN ADVISED OF 
   *    THE POSSIBILITY OF SUCH DAMAGES.
   */
  
  #include <bsl/bsl.h>
  #include <shr/shr_error.h>
  #include <shr/shr_debug.h>
  #include <sal_config.h>
  #include <sal/sal_types.h>
  #include <sal/sal_alloc.h>
  #include <sal/sal_libc.h>
  #include <sal/sal_sem.h>
  #include <sal/sal_sleep.h>
  #include <sal/sal_spinlock.h>
  #include <sal/sal_thread.h>
  #include <sal/sal_time.h>
  #include <bcmdrd/bcmdrd_dev.h>
  #include <bcmdrd/bcmdrd_devlist.h>
  #include <bcmbd/bcmbd_ccmdma.h>
  #include <bcmbd/bcmbd_internal.h>
  
  #define BSL_LOG_MODULE  BSL_LS_BCMBD_CCMDMA
  
  static ccmdma_ctrl_t *ccmdma_ctrl[CCMDMA_DEV_NUM_MAX];
  
  int
  bcmbd_ccmdma_attach(int unit)
  {
      ccmdma_ctrl_t *ctrl = NULL;
      int i;
  
      SHR_FUNC_ENTER(unit);
  
      ctrl = bcmbd_ccmdma_ctrl_get(unit);
      if (!ctrl) {
          SHR_IF_ERR_EXIT(SHR_E_UNAVAIL);
      }
  
      sal_memset(ctrl, 0, sizeof(*ctrl));
      ctrl->unit = unit;
  
      for (i = 0; i < DEV_CHAN_NUM_MAX; i++) {
          ctrl->intr[i] = sal_sem_create("ccmdma_intr_sem", SAL_SEM_BINARY, 0);
          if (!ctrl->intr[i]) {
              SHR_IF_ERR_EXIT(SHR_E_MEMORY);
          }
      }
  
      ctrl->active = 1;
      ccmdma_ctrl[unit] = ctrl;
  
  exit:
      if (SHR_FUNC_ERR()) {
          if (ctrl) {
              for (i = 0; i < DEV_CHAN_NUM_MAX; i++) {
                  if (ctrl->intr[i]) {
                      sal_sem_destroy(ctrl->intr[i]);
                      ctrl->intr[i] = NULL;
                  }
              }
          }
      }
  
      SHR_FUNC_EXIT();
  }
  
  int
  bcmbd_ccmdma_detach(int unit)
  {
      ccmdma_ctrl_t *ctrl = ccmdma_ctrl[unit];
      int i;
  
      if (!ctrl) {
          return SHR_E_UNAVAIL;
      }
  
      if (!ctrl->active) {
          return SHR_E_NONE;
      }
  
      ctrl->active = 0;
  
      for (i = 0; i < DEV_CHAN_NUM_MAX; i++) {
          if (ctrl->intr[i]) {
              sal_sem_destroy(ctrl->intr[i]);
              ctrl->intr[i] = NULL;
          }
      }
  
      return SHR_E_NONE;
  }
  
  int
  bcmbd_ccmdma_xfer(int unit, bcmbd_ccmdma_work_t *work)
  {
      ccmdma_ctrl_t *ctrl = ccmdma_ctrl[unit];
  
      if (!ctrl || !ctrl->active || !ctrl->ops) {
          return SHR_E_UNAVAIL;
      }
  
      if (!work) {
          return SHR_E_PARAM;
      }
  
      return ctrl->ops->work_execute(ctrl, work);
  }
  
  