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       1                 :            : /*
       2                 :            :  * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
       3                 :            :  *
       4                 :            :  * This program is free software; you may redistribute it and/or modify
       5                 :            :  * it under the terms of the GNU General Public License as published by
       6                 :            :  * the Free Software Foundation; version 2 of the License.
       7                 :            :  *
       8                 :            :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
       9                 :            :  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      10                 :            :  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      11                 :            :  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
      12                 :            :  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
      13                 :            :  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
      14                 :            :  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      15                 :            :  * SOFTWARE.
      16                 :            :  */
      17                 :            : 
      18                 :            : #ifndef _VNIC_CQ_FW_H_
      19                 :            : #define _VNIC_CQ_FW_H_
      20                 :            : 
      21                 :            : #include "snic_fwint.h"
      22                 :            : 
      23                 :            : static inline unsigned int
      24                 :          0 : vnic_cq_fw_service(struct vnic_cq *cq,
      25                 :            :                    int (*q_service)(struct vnic_dev *vdev,
      26                 :            :                                     unsigned int index,
      27                 :            :                                     struct snic_fw_req *desc),
      28                 :            :                    unsigned int work_to_do)
      29                 :            : 
      30                 :            : {
      31                 :          0 :         struct snic_fw_req *desc;
      32                 :          0 :         unsigned int work_done = 0;
      33                 :          0 :         u8 color;
      34                 :            : 
      35                 :          0 :         desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
      36                 :          0 :                 cq->ring.desc_size * cq->to_clean);
      37                 :          0 :         snic_color_dec(desc, &color);
      38                 :            : 
      39         [ #  # ]:          0 :         while (color != cq->last_color) {
      40                 :            : 
      41         [ #  # ]:          0 :                 if ((*q_service)(cq->vdev, cq->index, desc))
      42                 :            :                         break;
      43                 :            : 
      44                 :          0 :                 cq->to_clean++;
      45         [ #  # ]:          0 :                 if (cq->to_clean == cq->ring.desc_count) {
      46                 :          0 :                         cq->to_clean = 0;
      47                 :          0 :                         cq->last_color = cq->last_color ? 0 : 1;
      48                 :            :                 }
      49                 :            : 
      50                 :          0 :                 desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
      51                 :          0 :                         cq->ring.desc_size * cq->to_clean);
      52                 :          0 :                 snic_color_dec(desc, &color);
      53                 :            : 
      54                 :          0 :                 work_done++;
      55         [ #  # ]:          0 :                 if (work_done >= work_to_do)
      56                 :            :                         break;
      57                 :            :         }
      58                 :            : 
      59                 :          0 :         return work_done;
      60                 :            : }
      61                 :            : 
      62                 :            : #endif /* _VNIC_CQ_FW_H_ */