drivers/net/ethernet/intel/i40e/i40e_lan_hmc.h

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #ifndef _I40E_LAN_HMC_H_
  28 #define _I40E_LAN_HMC_H_
  29
  30 /* forward-declare the HW struct for the compiler */
  31 struct i40e_hw;
  32
  33 /* HMC element context information */
  34
  35 /* Rx queue context data
  36  *
  37  * The sizes of the variables may be larger than needed due to crossing byte
  38  * boundaries. If we do not have the width of the variable set to the correct
  39  * size then we could end up shifting bits off the top of the variable when the
  40  * variable is at the top of a byte and crosses over into the next byte.
  41  */
  42 struct i40e_hmc_obj_rxq {
  43         u16 head;
  44         u16 cpuid; /* bigger than needed, see above for reason */
  45         u64 base;
  46         u16 qlen;
  47 #define I40E_RXQ_CTX_DBUFF_SHIFT 7
  48         u16 dbuff; /* bigger than needed, see above for reason */
  49 #define I40E_RXQ_CTX_HBUFF_SHIFT 6
  50         u16 hbuff; /* bigger than needed, see above for reason */
  51         u8  dtype;
  52         u8  dsize;
  53         u8  crcstrip;
  54         u8  fc_ena;
  55         u8  l2tsel;
  56         u8  hsplit_0;
  57         u8  hsplit_1;
  58         u8  showiv;
  59         u32 rxmax; /* bigger than needed, see above for reason */
  60         u8  tphrdesc_ena;
  61         u8  tphwdesc_ena;
  62         u8  tphdata_ena;
  63         u8  tphhead_ena;
  64         u16 lrxqthresh; /* bigger than needed, see above for reason */
  65         u8  prefena;    /* NOTE: normally must be set to 1 at init */
  66 };
  67
  68 /* Tx queue context data
  69 *
  70 * The sizes of the variables may be larger than needed due to crossing byte
  71 * boundaries. If we do not have the width of the variable set to the correct
  72 * size then we could end up shifting bits off the top of the variable when the
  73 * variable is at the top of a byte and crosses over into the next byte.
  74 */
  75 struct i40e_hmc_obj_txq {
  76         u16 head;
  77         u8  new_context;
  78         u64 base;
  79         u8  fc_ena;
  80         u8  timesync_ena;
  81         u8  fd_ena;
  82         u8  alt_vlan_ena;
  83         u16 thead_wb;
  84         u8  cpuid;
  85         u8  head_wb_ena;
  86         u16 qlen;
  87         u8  tphrdesc_ena;
  88         u8  tphrpacket_ena;
  89         u8  tphwdesc_ena;
  90         u64 head_wb_addr;
  91         u32 crc;
  92         u16 rdylist;
  93         u8  rdylist_act;
  94 };
  95
  96 /* for hsplit_0 field of Rx HMC context */
  97 enum i40e_hmc_obj_rx_hsplit_0 {
  98         I40E_HMC_OBJ_RX_HSPLIT_0_NO_SPLIT      = 0,
  99         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_L2      = 1,
 100         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_IP      = 2,
 101         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_TCP_UDP = 4,
 102         I40E_HMC_OBJ_RX_HSPLIT_0_SPLIT_SCTP    = 8,
 103 };
 104
 105 /* fcoe_cntx and fcoe_filt are for debugging purpose only */
 106 struct i40e_hmc_obj_fcoe_cntx {
 107         u32 rsv[32];
 108 };
 109
 110 struct i40e_hmc_obj_fcoe_filt {
 111         u32 rsv[8];
 112 };
 113
 114 /* Context sizes for LAN objects */
 115 enum i40e_hmc_lan_object_size {
 116         I40E_HMC_LAN_OBJ_SZ_8   = 0x3,
 117         I40E_HMC_LAN_OBJ_SZ_16  = 0x4,
 118         I40E_HMC_LAN_OBJ_SZ_32  = 0x5,
 119         I40E_HMC_LAN_OBJ_SZ_64  = 0x6,
 120         I40E_HMC_LAN_OBJ_SZ_128 = 0x7,
 121         I40E_HMC_LAN_OBJ_SZ_256 = 0x8,
 122         I40E_HMC_LAN_OBJ_SZ_512 = 0x9,
 123 };
 124
 125 #define I40E_HMC_L2OBJ_BASE_ALIGNMENT 512
 126 #define I40E_HMC_OBJ_SIZE_TXQ         128
 127 #define I40E_HMC_OBJ_SIZE_RXQ         32
 128 #define I40E_HMC_OBJ_SIZE_FCOE_CNTX   64
 129 #define I40E_HMC_OBJ_SIZE_FCOE_FILT   64
 130
 131 enum i40e_hmc_lan_rsrc_type {
 132         I40E_HMC_LAN_FULL  = 0,
 133         I40E_HMC_LAN_TX    = 1,
 134         I40E_HMC_LAN_RX    = 2,
 135         I40E_HMC_FCOE_CTX  = 3,
 136         I40E_HMC_FCOE_FILT = 4,
 137         I40E_HMC_LAN_MAX   = 5
 138 };
 139
 140 enum i40e_hmc_model {
 141         I40E_HMC_MODEL_DIRECT_PREFERRED = 0,
 142         I40E_HMC_MODEL_DIRECT_ONLY      = 1,
 143         I40E_HMC_MODEL_PAGED_ONLY       = 2,
 144         I40E_HMC_MODEL_UNKNOWN,
 145 };
 146
 147 struct i40e_hmc_lan_create_obj_info {
 148         struct i40e_hmc_info *hmc_info;
 149         u32 rsrc_type;
 150         u32 start_idx;
 151         u32 count;
 152         enum i40e_sd_entry_type entry_type;
 153         u64 direct_mode_sz;
 154 };
 155
 156 struct i40e_hmc_lan_delete_obj_info {
 157         struct i40e_hmc_info *hmc_info;
 158         u32 rsrc_type;
 159         u32 start_idx;
 160         u32 count;
 161 };
 162
 163 i40e_status i40e_init_lan_hmc(struct i40e_hw *hw, u32 txq_num,
 164                                         u32 rxq_num, u32 fcoe_cntx_num,
 165                                         u32 fcoe_filt_num);
 166 i40e_status i40e_configure_lan_hmc(struct i40e_hw *hw,
 167                                              enum i40e_hmc_model model);
 168 i40e_status i40e_shutdown_lan_hmc(struct i40e_hw *hw);
 169
 170 i40e_status i40e_clear_lan_tx_queue_context(struct i40e_hw *hw,
 171                                                       u16 queue);
 172 i40e_status i40e_set_lan_tx_queue_context(struct i40e_hw *hw,
 173                                                     u16 queue,
 174                                                     struct i40e_hmc_obj_txq *s);
 175 i40e_status i40e_clear_lan_rx_queue_context(struct i40e_hw *hw,
 176                                                       u16 queue);
 177 i40e_status i40e_set_lan_rx_queue_context(struct i40e_hw *hw,
 178                                                     u16 queue,
 179                                                     struct i40e_hmc_obj_rxq *s);
 180
 181 #endif /* _I40E_LAN_HMC_H_ */