linux/drivers/net/ethernet/intel/i40evf/i40e_lan_hmc.h
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   1/*******************************************************************************
   2 *
   3 * Intel Ethernet Controller XL710 Family Linux Virtual Function 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 */
  31struct 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 */
  42struct 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*/
  75struct 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 */
  97enum 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 */
 106struct i40e_hmc_obj_fcoe_cntx {
 107        u32 rsv[32];
 108};
 109
 110struct i40e_hmc_obj_fcoe_filt {
 111        u32 rsv[8];
 112};
 113
 114/* Context sizes for LAN objects */
 115enum 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   128
 129#define I40E_HMC_OBJ_SIZE_FCOE_FILT   64
 130
 131enum 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
 140enum 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
 147struct 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
 156struct 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
 163i40e_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);
 166i40e_status i40e_configure_lan_hmc(struct i40e_hw *hw,
 167                                             enum i40e_hmc_model model);
 168i40e_status i40e_shutdown_lan_hmc(struct i40e_hw *hw);
 169
 170i40e_status i40e_clear_lan_tx_queue_context(struct i40e_hw *hw,
 171                                                      u16 queue);
 172i40e_status i40e_set_lan_tx_queue_context(struct i40e_hw *hw,
 173                                                    u16 queue,
 174                                                    struct i40e_hmc_obj_txq *s);
 175i40e_status i40e_clear_lan_rx_queue_context(struct i40e_hw *hw,
 176                                                      u16 queue);
 177i40e_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_ */
 182