drivers/scsi/fnic/cq_exch_desc.h

   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 _CQ_EXCH_DESC_H_
   7 #define _CQ_EXCH_DESC_H_
   8
   9 #include "cq_desc.h"
  10
  11 /* Exchange completion queue descriptor: 16B */
  12 struct cq_exch_wq_desc {
  13         u16 completed_index;
  14         u16 q_number;
  15         u16 exchange_id;
  16         u8  tmpl;
  17         u8  reserved0;
  18         u32 reserved1;
  19         u8  exch_status;
  20         u8  reserved2[2];
  21         u8  type_color;
  22 };
  23
  24 #define CQ_EXCH_WQ_STATUS_BITS      2
  25 #define CQ_EXCH_WQ_STATUS_MASK      ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)
  26
  27 enum cq_exch_status_types {
  28         CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
  29         CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
  30         CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
  31         CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
  32 };
  33
  34 static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
  35                                        u8  *type,
  36                                        u8  *color,
  37                                        u16 *q_number,
  38                                        u16 *completed_index,
  39                                        u8  *exch_status)
  40 {
  41         cq_desc_dec((struct cq_desc *)desc_ptr, type,
  42                     color, q_number, completed_index);
  43         *exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
  44 }
  45
  46 struct cq_fcp_rq_desc {
  47         u16 completed_index_eop_sop_prt;
  48         u16 q_number;
  49         u16 exchange_id;
  50         u16 tmpl;
  51         u16 bytes_written;
  52         u16 vlan;
  53         u8  sof;
  54         u8  eof;
  55         u8  fcs_fer_fck;
  56         u8  type_color;
  57 };
  58
  59 #define CQ_FCP_RQ_DESC_FLAGS_SOP                (1 << 15)
  60 #define CQ_FCP_RQ_DESC_FLAGS_EOP                (1 << 14)
  61 #define CQ_FCP_RQ_DESC_FLAGS_PRT                (1 << 12)
  62 #define CQ_FCP_RQ_DESC_TMPL_MASK                0x1f
  63 #define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK       0x3fff
  64 #define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT         14
  65 #define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
  66 #define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT        15
  67 #define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
  68 #define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK           0x1
  69 #define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT           1
  70 #define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
  71 #define CQ_FCP_RQ_DESC_FCS_OK_SHIFT             7
  72 #define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)
  73
  74 static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
  75                                       u8  *type,
  76                                       u8  *color,
  77                                       u16 *q_number,
  78                                       u16 *completed_index,
  79                                       u8  *eop,
  80                                       u8  *sop,
  81                                       u8  *fck,
  82                                       u16 *exchange_id,
  83                                       u16 *tmpl,
  84                                       u32 *bytes_written,
  85                                       u8  *sof,
  86                                       u8  *eof,
  87                                       u8  *ingress_port,
  88                                       u8  *packet_err,
  89                                       u8  *fcoe_err,
  90                                       u8  *fcs_ok,
  91                                       u8  *vlan_stripped,
  92                                       u16 *vlan)
  93 {
  94         cq_desc_dec((struct cq_desc *)desc_ptr, type,
  95                     color, q_number, completed_index);
  96         *eop = (desc_ptr->completed_index_eop_sop_prt &
  97                 CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
  98         *sop = (desc_ptr->completed_index_eop_sop_prt &
  99                 CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
 100         *ingress_port =
 101                 (desc_ptr->completed_index_eop_sop_prt &
 102                  CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
 103         *exchange_id = desc_ptr->exchange_id;
 104         *tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
 105         *bytes_written =
 106                 desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
 107         *packet_err =
 108                 (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
 109                 CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
 110         *vlan_stripped =
 111                 (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
 112                 CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
 113         *vlan = desc_ptr->vlan;
 114         *sof = desc_ptr->sof;
 115         *fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
 116         *fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
 117                 CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
 118         *eof = desc_ptr->eof;
 119         *fcs_ok =
 120                 (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
 121                 CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
 122 }
 123
 124 struct cq_sgl_desc {
 125         u16 exchange_id;
 126         u16 q_number;
 127         u32 active_burst_offset;
 128         u32 tot_data_bytes;
 129         u16 tmpl;
 130         u8  sgl_err;
 131         u8  type_color;
 132 };
 133
 134 enum cq_sgl_err_types {
 135         CQ_SGL_ERR_NO_ERROR = 0,
 136         CQ_SGL_ERR_OVERFLOW,         /* data ran beyond end of SGL */
 137         CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
 138         CQ_SGL_ERR_ADDR_RSP_ERR,     /* sgl address error */
 139         CQ_SGL_ERR_DATA_RSP_ERR,     /* sgl data rsp error */
 140         CQ_SGL_ERR_CNT_ZERO_ERR,     /* SGL count is 0 */
 141         CQ_SGL_ERR_CNT_MAX_ERR,      /* SGL count is larger than supported */
 142         CQ_SGL_ERR_ORDER_ERR,        /* frames recv on both ports, order err */
 143         CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
 144         CQ_SGL_ERR_HOST_CQ_ERR,      /* host cq entry to local vnic addr ill */
 145 };
 146
 147 #define CQ_SGL_SGL_ERR_MASK             0x1f
 148 #define CQ_SGL_TMPL_MASK                0x1f
 149
 150 static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
 151                                    u8  *type,
 152                                    u8  *color,
 153                                    u16 *q_number,
 154                                    u16 *exchange_id,
 155                                    u32 *active_burst_offset,
 156                                    u32 *tot_data_bytes,
 157                                    u16 *tmpl,
 158                                    u8  *sgl_err)
 159 {
 160         /* Cheat a little by assuming exchange_id is the same as completed
 161            index */
 162         cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
 163                     exchange_id);
 164         *active_burst_offset = desc_ptr->active_burst_offset;
 165         *tot_data_bytes = desc_ptr->tot_data_bytes;
 166         *tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
 167         *sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
 168 }
 169
 170 #endif /* _CQ_EXCH_DESC_H_ */