drivers/net/ethernet/intel/i40evf/i40e_lan_hmc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #ifndef _I40E_LAN_HMC_H_
   5 #define _I40E_LAN_HMC_H_
   6
   7 /* forward-declare the HW struct for the compiler */
   8 struct i40e_hw;
   9
  10 /* HMC element context information */
  11
  12 /* Rx queue context data
  13  *
  14  * The sizes of the variables may be larger than needed due to crossing byte
  15  * boundaries. If we do not have the width of the variable set to the correct
  16  * size then we could end up shifting bits off the top of the variable when the
  17  * variable is at the top of a byte and crosses over into the next byte.
  18  */
  19 struct i40e_hmc_obj_rxq {
  20         u16 head;
  21         u16 cpuid; /* bigger than needed, see above for reason */
  22         u64 base;
  23         u16 qlen;
  24 #define I40E_RXQ_CTX_DBUFF_SHIFT 7
  25         u16 dbuff; /* bigger than needed, see above for reason */
  26 #define I40E_RXQ_CTX_HBUFF_SHIFT 6
  27         u16 hbuff; /* bigger than needed, see above for reason */
  28         u8  dtype;
  29         u8  dsize;
  30         u8  crcstrip;
  31         u8  fc_ena;
  32         u8  l2tsel;
  33         u8  hsplit_0;
  34         u8  hsplit_1;
  35         u8  showiv;
  36         u32 rxmax; /* bigger than needed, see above for reason */
  37         u8  tphrdesc_ena;
  38         u8  tphwdesc_ena;
  39         u8  tphdata_ena;
  40         u8  tphhead_ena;
  41         u16 lrxqthresh; /* bigger than needed, see above for reason */
  42         u8  prefena;    /* NOTE: normally must be set to 1 at init */
  43 };
  44
  45 /* Tx queue context data
  46 *
  47 * The sizes of the variables may be larger than needed due to crossing byte
  48 * boundaries. If we do not have the width of the variable set to the correct
  49 * size then we could end up shifting bits off the top of the variable when the
  50 * variable is at the top of a byte and crosses over into the next byte.
  51 */
  52 struct i40e_hmc_obj_txq {
  53         u16 head;
  54         u8  new_context;
  55         u64 base;
  56         u8  fc_ena;
  57         u8  timesync_ena;
  58         u8  fd_ena;
  59         u8  alt_vlan_ena;
  60         u16 thead_wb;
  61         u8  cpuid;
  62         u8  head_wb_ena;
  63         u16 qlen;
  64         u8  tphrdesc_ena;
  65         u8  tphrpacket_ena;
  66         u8  tphwdesc_ena;
  67         u64 head_wb_addr;
  68         u32 crc;
  69         u16 rdylist;
  70         u8  rdylist_act;
  71 };
  72
  73 /* for hsplit_0 field of Rx HMC context */
  74 enum i40e_hmc_obj_rx_hsplit_0 {
  75         I40E_HMC_OBJ_RX_HSPLIT_0_NO_SPLIT      = 0,
  76         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_L2      = 1,
  77         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_IP      = 2,
  78         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_TCP_UDP = 4,
  79         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_SCTP    = 8,
  80 };
  81
  82 /* fcoe_cntx and fcoe_filt are for debugging purpose only */
  83 struct i40e_hmc_obj_fcoe_cntx {
  84         u32 rsv[32];
  85 };
  86
  87 struct i40e_hmc_obj_fcoe_filt {
  88         u32 rsv[8];
  89 };
  90
  91 /* Context sizes for LAN objects */
  92 enum i40e_hmc_lan_object_size {
  93         I40E_HMC_LAN_OBJ_SZ_8   = 0x3,
  94         I40E_HMC_LAN_OBJ_SZ_16  = 0x4,
  95         I40E_HMC_LAN_OBJ_SZ_32  = 0x5,
  96         I40E_HMC_LAN_OBJ_SZ_64  = 0x6,
  97         I40E_HMC_LAN_OBJ_SZ_128 = 0x7,
  98         I40E_HMC_LAN_OBJ_SZ_256 = 0x8,
  99         I40E_HMC_LAN_OBJ_SZ_512 = 0x9,
 100 };
 101
 102 #define I40E_HMC_L2OBJ_BASE_ALIGNMENT 512
 103 #define I40E_HMC_OBJ_SIZE_TXQ         128
 104 #define I40E_HMC_OBJ_SIZE_RXQ         32
 105 #define I40E_HMC_OBJ_SIZE_FCOE_CNTX   128
 106 #define I40E_HMC_OBJ_SIZE_FCOE_FILT   64
 107
 108 enum i40e_hmc_lan_rsrc_type {
 109         I40E_HMC_LAN_FULL  = 0,
 110         I40E_HMC_LAN_TX    = 1,
 111         I40E_HMC_LAN_RX    = 2,
 112         I40E_HMC_FCOE_CTX  = 3,
 113         I40E_HMC_FCOE_FILT = 4,
 114         I40E_HMC_LAN_MAX   = 5
 115 };
 116
 117 enum i40e_hmc_model {
 118         I40E_HMC_MODEL_DIRECT_PREFERRED = 0,
 119         I40E_HMC_MODEL_DIRECT_ONLY      = 1,
 120         I40E_HMC_MODEL_PAGED_ONLY       = 2,
 121         I40E_HMC_MODEL_UNKNOWN,
 122 };
 123
 124 struct i40e_hmc_lan_create_obj_info {
 125         struct i40e_hmc_info *hmc_info;
 126         u32 rsrc_type;
 127         u32 start_idx;
 128         u32 count;
 129         enum i40e_sd_entry_type entry_type;
 130         u64 direct_mode_sz;
 131 };
 132
 133 struct i40e_hmc_lan_delete_obj_info {
 134         struct i40e_hmc_info *hmc_info;
 135         u32 rsrc_type;
 136         u32 start_idx;
 137         u32 count;
 138 };
 139
 140 i40e_status i40e_init_lan_hmc(struct i40e_hw *hw, u32 txq_num,
 141                                         u32 rxq_num, u32 fcoe_cntx_num,
 142                                         u32 fcoe_filt_num);
 143 i40e_status i40e_configure_lan_hmc(struct i40e_hw *hw,
 144                                              enum i40e_hmc_model model);
 145 i40e_status i40e_shutdown_lan_hmc(struct i40e_hw *hw);
 146
 147 i40e_status i40e_clear_lan_tx_queue_context(struct i40e_hw *hw,
 148                                                       u16 queue);
 149 i40e_status i40e_set_lan_tx_queue_context(struct i40e_hw *hw,
 150                                                     u16 queue,
 151                                                     struct i40e_hmc_obj_txq *s);
 152 i40e_status i40e_clear_lan_rx_queue_context(struct i40e_hw *hw,
 153                                                       u16 queue);
 154 i40e_status i40e_set_lan_rx_queue_context(struct i40e_hw *hw,
 155                                                     u16 queue,
 156                                                     struct i40e_hmc_obj_rxq *s);
 157
 158 #endif /* _I40E_LAN_HMC_H_ */