1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 4 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 5 */ 6 #ifndef _VNIC_CQ_COPY_H_ 7 #define _VNIC_CQ_COPY_H_ 8 9 #include "fcpio.h" 10 11 static inline unsigned int vnic_cq_copy_service( 12 struct vnic_cq *cq, 13 int (*q_service)(struct vnic_dev *vdev, 14 unsigned int index, 15 struct fcpio_fw_req *desc), 16 unsigned int work_to_do) 17 18 { 19 struct fcpio_fw_req *desc; 20 unsigned int work_done = 0; 21 u8 color; 22 23 desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs + 24 cq->ring.desc_size * cq->to_clean); 25 fcpio_color_dec(desc, &color); 26 27 while (color != cq->last_color) { 28 29 if ((*q_service)(cq->vdev, cq->index, desc)) 30 break; 31 32 cq->to_clean++; 33 if (cq->to_clean == cq->ring.desc_count) { 34 cq->to_clean = 0; 35 cq->last_color = cq->last_color ? 0 : 1; 36 } 37 38 desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs + 39 cq->ring.desc_size * cq->to_clean); 40 fcpio_color_dec(desc, &color); 41 42 work_done++; 43 if (work_done >= work_to_do) 44 break; 45 } 46 47 return work_done; 48 } 49 50 #endif /* _VNIC_CQ_COPY_H_ */ 51