Quelle  cq_exch_desc.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 */
#ifndef _CQ_EXCH_DESC_H_
#define _CQ_EXCH_DESC_H_

#include "cq_desc.h"

/* Exchange completion queue descriptor: 16B */
struct cq_exch_wq_desc {
 u16 completed_index;
 u16 q_number;
 u16 exchange_id;
 u8  tmpl;
 u8  reserved0;
 u32 reserved1;
 u8  exch_status;
 u8  reserved2[2];
 u8  type_color;
};

#define CQ_EXCH_WQ_STATUS_BITS      2
#define CQ_EXCH_WQ_STATUS_MASK      ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)

enum cq_exch_status_types {
 CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
 CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
 CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
 CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
};

static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
           u8  *type,
           u8  *color,
           u16 *q_number,
           u16 *completed_index,
           u8  *exch_status)
{
 cq_desc_dec((struct cq_desc *)desc_ptr, type,
      color, q_number, completed_index);
 *exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
}

struct cq_fcp_rq_desc {
 u16 completed_index_eop_sop_prt;
 u16 q_number;
 u16 exchange_id;
 u16 tmpl;
 u16 bytes_written;
 u16 vlan;
 u8  sof;
 u8  eof;
 u8  fcs_fer_fck;
 u8  type_color;
};

#define CQ_FCP_RQ_DESC_FLAGS_SOP  (1 << 15)
#define CQ_FCP_RQ_DESC_FLAGS_EOP  (1 << 14)
#define CQ_FCP_RQ_DESC_FLAGS_PRT  (1 << 12)
#define CQ_FCP_RQ_DESC_TMPL_MASK  0x1f
#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff
#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT  14
#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15
#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK  0x1
#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT  1
#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT  7
#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)

static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
          u8  *type,
          u8  *color,
          u16 *q_number,
          u16 *completed_index,
          u8  *eop,
          u8  *sop,
          u8  *fck,
          u16 *exchange_id,
          u16 *tmpl,
          u32 *bytes_written,
          u8  *sof,
          u8  *eof,
          u8  *ingress_port,
          u8  *packet_err,
          u8  *fcoe_err,
          u8  *fcs_ok,
          u8  *vlan_stripped,
          u16 *vlan)
{
 cq_desc_dec((struct cq_desc *)desc_ptr, type,
      color, q_number, completed_index);
 *eop = (desc_ptr->completed_index_eop_sop_prt &
  CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
 *sop = (desc_ptr->completed_index_eop_sop_prt &
  CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
 *ingress_port =
  (desc_ptr->completed_index_eop_sop_prt &
   CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
 *exchange_id = desc_ptr->exchange_id;
 *tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
 *bytes_written =
  desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
 *packet_err =
  (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
  CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
 *vlan_stripped =
  (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
  CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
 *vlan = desc_ptr->vlan;
 *sof = desc_ptr->sof;
 *fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
 *fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
  CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
 *eof = desc_ptr->eof;
 *fcs_ok =
  (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
  CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
}

struct cq_sgl_desc {
 u16 exchange_id;
 u16 q_number;
 u32 active_burst_offset;
 u32 tot_data_bytes;
 u16 tmpl;
 u8  sgl_err;
 u8  type_color;
};

enum cq_sgl_err_types {
 CQ_SGL_ERR_NO_ERROR = 0,
 CQ_SGL_ERR_OVERFLOW,         /* data ran beyond end of SGL */
 CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
 CQ_SGL_ERR_ADDR_RSP_ERR,     /* sgl address error */
 CQ_SGL_ERR_DATA_RSP_ERR,     /* sgl data rsp error */
 CQ_SGL_ERR_CNT_ZERO_ERR,     /* SGL count is 0 */
 CQ_SGL_ERR_CNT_MAX_ERR,      /* SGL count is larger than supported */
 CQ_SGL_ERR_ORDER_ERR,        /* frames recv on both ports, order err */
 CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
 CQ_SGL_ERR_HOST_CQ_ERR,      /* host cq entry to local vnic addr ill */
};

#define CQ_SGL_SGL_ERR_MASK             0x1f
#define CQ_SGL_TMPL_MASK                0x1f

static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
       u8  *type,
       u8  *color,
       u16 *q_number,
       u16 *exchange_id,
       u32 *active_burst_offset,
       u32 *tot_data_bytes,
       u16 *tmpl,
       u8  *sgl_err)
{
 /* Cheat a little by assuming exchange_id is the same as completed
   index */
 cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
      exchange_id);
 *active_burst_offset = desc_ptr->active_burst_offset;
 *tot_data_bytes = desc_ptr->tot_data_bytes;
 *tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
 *sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
}

#endif /* _CQ_EXCH_DESC_H_ */