src/plugins/dev_ena/ena_io_defs.h

   1 /* SPDX-License-Identifier: Apache-2.0
   2  * Copyright(c) 2023 Cisco Systems, Inc.
   3  */
   4
   5 #ifndef _ENA_IO_DEFS_H_
   6 #define _ENA_IO_DEFS_H_
   7
   8 #include <vppinfra/clib.h>
   9 #include <vppinfra/error_bootstrap.h>
  10 #include <vppinfra/vector.h>
  11
  12 typedef struct
  13 {
  14   u16 length; /* 0 = 64K */
  15   u8 reserved2;
  16   union
  17   {
  18     struct
  19     {
  20       u8 phase : 1;
  21       u8 reserved1 : 1;
  22       u8 first : 1;    /* first descriptor in transaction */
  23       u8 last : 1;     /* last descriptor in transaction */
  24       u8 comp_req : 1; /* should completion be posted? */
  25       u8 reserved5 : 1;
  26       u8 reserved67 : 2;
  27     };
  28     u8 ctrl;
  29   };
  30   u16 req_id;
  31   u16 reserved6;
  32 } ena_rx_desc_lo_t;
  33
  34 STATIC_ASSERT_SIZEOF (ena_rx_desc_lo_t, 8);
  35
  36 typedef struct
  37 {
  38   union
  39   {
  40     struct
  41     {
  42       ena_rx_desc_lo_t lo;
  43       u32 buff_addr_lo;
  44       u16 buff_addr_hi;
  45       u16 reserved16_w3;
  46     };
  47     u64x2 as_u64x2;
  48   };
  49 } ena_rx_desc_t;
  50
  51 STATIC_ASSERT_SIZEOF (ena_rx_desc_t, 16);
  52
  53 #define foreach_ena_rx_cdesc_status                                           \
  54   _ (5, l3_proto_idx)                                                         \
  55   _ (2, src_vlan_cnt)                                                         \
  56   _ (1, _reserved7)                                                           \
  57   _ (5, l4_proto_idx)                                                         \
  58   _ (1, l3_csum_err)                                                          \
  59   _ (1, l4_csum_err)                                                          \
  60   _ (1, ipv4_frag)                                                            \
  61   _ (1, l4_csum_checked)                                                      \
  62   _ (7, _reserved17)                                                          \
  63   _ (1, phase)                                                                \
  64   _ (1, l3_csum2)                                                             \
  65   _ (1, first)                                                                \
  66   _ (1, last)                                                                 \
  67   _ (2, _reserved28)                                                          \
  68   _ (1, buffer)                                                               \
  69   _ (1, _reserved31)
  70
  71 typedef struct
  72 {
  73   union
  74   {
  75     struct
  76     {
  77 #define _(b, n) u32 n : (b);
  78       foreach_ena_rx_cdesc_status
  79 #undef _
  80     };
  81     u32 as_u32;
  82   };
  83 } ena_rx_cdesc_status_t;
  84
  85 typedef struct
  86 {
  87   ena_rx_cdesc_status_t status;
  88   u16 length;
  89   u16 req_id;
  90   u32 hash;
  91   u16 sub_qid;
  92   u8 offset;
  93   u8 reserved;
  94 } ena_rx_cdesc_t;
  95
  96 STATIC_ASSERT_SIZEOF (ena_rx_cdesc_t, 16);
  97
  98 #define foreach_ena_tx_desc                                                   \
  99   /* len_ctrl */                                                              \
 100   _ (16, length)                                                              \
 101   _ (6, req_id_hi)                                                            \
 102   _ (1, _reserved0_22)                                                        \
 103   _ (1, meta_desc)                                                            \
 104   _ (1, phase)                                                                \
 105   _ (1, _reserved0_25)                                                        \
 106   _ (1, first)                                                                \
 107   _ (1, last)                                                                 \
 108   _ (1, comp_req)                                                             \
 109   _ (2, _reserved0_29)                                                        \
 110   _ (1, _reserved0_31)                                                        \
 111   /* meta_ctrl */                                                             \
 112   _ (4, l3_proto_idx)                                                         \
 113   _ (1, df)                                                                   \
 114   _ (2, _reserved1_5)                                                         \
 115   _ (1, tso_en)                                                               \
 116   _ (5, l4_proto_idx)                                                         \
 117   _ (1, l3_csum_en)                                                           \
 118   _ (1, l4_csum_en)                                                           \
 119   _ (1, ethernet_fcs_dis)                                                     \
 120   _ (1, _reserved1_16)                                                        \
 121   _ (1, l4_csum_partial)                                                      \
 122   _ (3, _reserved_1_18)                                                       \
 123   _ (1, _reserved_1_21)                                                       \
 124   _ (10, req_id_lo)
 125
 126 typedef struct
 127 {
 128   union
 129   {
 130     struct
 131     {
 132 #define _(b, n) u32 n : (b);
 133       foreach_ena_tx_desc
 134 #undef _
 135         u32 buff_addr_lo;
 136       u16 buff_addr_hi;
 137       u8 _reserved3_16;
 138       u8 header_length;
 139     };
 140
 141     u16x8 as_u16x8;
 142     u32x4 as_u32x4;
 143     u64x2 as_u64x2;
 144   };
 145 } ena_tx_desc_t;
 146
 147 STATIC_ASSERT_SIZEOF (ena_tx_desc_t, 16);
 148
 149 typedef struct
 150 {
 151   ena_tx_desc_t desc[2];
 152   u8 data[96];
 153 } __clib_aligned (128)
 154 ena_tx_llq_desc128_t;
 155 STATIC_ASSERT_SIZEOF (ena_tx_llq_desc128_t, 128);
 156
 157 typedef union
 158 {
 159   struct
 160   {
 161     u16 req_id;
 162     u8 status;
 163     union
 164     {
 165       struct
 166       {
 167         u8 phase : 1;
 168       };
 169       u8 flags;
 170     };
 171     u16 sub_qid;
 172     u16 sq_head_idx;
 173   };
 174   u64 as_u64;
 175 } ena_tx_cdesc_t;
 176
 177 STATIC_ASSERT_SIZEOF (ena_tx_cdesc_t, 8);
 178
 179 #endif /* _ENA_IO_DEFS_H_ */