47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#ifndef _CQ_DESC_H_
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#define _CQ_DESC_H_
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/*
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* Completion queue descriptor types
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*/
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enum cq_desc_types {
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CQ_DESC_TYPE_WQ_ENET = 0,
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CQ_DESC_TYPE_DESC_COPY = 1,
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CQ_DESC_TYPE_WQ_EXCH = 2,
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CQ_DESC_TYPE_RQ_ENET = 3,
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CQ_DESC_TYPE_RQ_FCP = 4,
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};
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/* Completion queue descriptor: 16B
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*
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* All completion queues have this basic layout. The
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* type_specfic area is unique for each completion
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* queue type.
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*/
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struct cq_desc {
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__le16 completed_index;
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__le16 q_number;
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u8 type_specfic[11];
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u8 type_color;
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};
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#define CQ_DESC_TYPE_BITS 4
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#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
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#define CQ_DESC_COLOR_MASK 1
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#define CQ_DESC_COLOR_SHIFT 7
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#define CQ_DESC_Q_NUM_BITS 10
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#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
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#define CQ_DESC_COMP_NDX_BITS 12
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#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1)
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#define CQ_DESC_32_FI_MASK (BIT(0) | BIT(1))
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#define CQ_DESC_64_FI_MASK (BIT(0) | BIT(1))
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#endif /* _CQ_DESC_H_ */
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