drivers/net/iavf/base/iavf_lan_hmc.h

   1 /*******************************************************************************
   2
   3 Copyright (c) 2013 - 2015, Intel Corporation
   4 All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions are met:
   8
   9  1. Redistributions of source code must retain the above copyright notice,
  10     this list of conditions and the following disclaimer.
  11
  12  2. Redistributions in binary form must reproduce the above copyright
  13     notice, this list of conditions and the following disclaimer in the
  14     documentation and/or other materials provided with the distribution.
  15
  16  3. Neither the name of the Intel Corporation nor the names of its
  17     contributors may be used to endorse or promote products derived from
  18     this software without specific prior written permission.
  19
  20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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  28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30 POSSIBILITY OF SUCH DAMAGE.
  31
  32 ***************************************************************************/
  33
  34 #ifndef _IAVF_LAN_HMC_H_
  35 #define _IAVF_LAN_HMC_H_
  36
  37 /* forward-declare the HW struct for the compiler */
  38 struct iavf_hw;
  39
  40 /* HMC element context information */
  41
  42 /* Rx queue context data
  43  *
  44  * The sizes of the variables may be larger than needed due to crossing byte
  45  * boundaries. If we do not have the width of the variable set to the correct
  46  * size then we could end up shifting bits off the top of the variable when the
  47  * variable is at the top of a byte and crosses over into the next byte.
  48  */
  49 struct iavf_hmc_obj_rxq {
  50         u16 head;
  51         u16 cpuid; /* bigger than needed, see above for reason */
  52         u64 base;
  53         u16 qlen;
  54 #define IAVF_RXQ_CTX_DBUFF_SHIFT 7
  55         u16 dbuff; /* bigger than needed, see above for reason */
  56 #define IAVF_RXQ_CTX_HBUFF_SHIFT 6
  57         u16 hbuff; /* bigger than needed, see above for reason */
  58         u8  dtype;
  59         u8  dsize;
  60         u8  crcstrip;
  61         u8  fc_ena;
  62         u8  l2tsel;
  63         u8  hsplit_0;
  64         u8  hsplit_1;
  65         u8  showiv;
  66         u32 rxmax; /* bigger than needed, see above for reason */
  67         u8  tphrdesc_ena;
  68         u8  tphwdesc_ena;
  69         u8  tphdata_ena;
  70         u8  tphhead_ena;
  71         u16 lrxqthresh; /* bigger than needed, see above for reason */
  72         u8  prefena;    /* NOTE: normally must be set to 1 at init */
  73 };
  74
  75 /* Tx queue context data
  76 *
  77 * The sizes of the variables may be larger than needed due to crossing byte
  78 * boundaries. If we do not have the width of the variable set to the correct
  79 * size then we could end up shifting bits off the top of the variable when the
  80 * variable is at the top of a byte and crosses over into the next byte.
  81 */
  82 struct iavf_hmc_obj_txq {
  83         u16 head;
  84         u8  new_context;
  85         u64 base;
  86         u8  fc_ena;
  87         u8  timesync_ena;
  88         u8  fd_ena;
  89         u8  alt_vlan_ena;
  90         u16 thead_wb;
  91         u8  cpuid;
  92         u8  head_wb_ena;
  93         u16 qlen;
  94         u8  tphrdesc_ena;
  95         u8  tphrpacket_ena;
  96         u8  tphwdesc_ena;
  97         u64 head_wb_addr;
  98         u32 crc;
  99         u16 rdylist;
 100         u8  rdylist_act;
 101 };
 102
 103 /* for hsplit_0 field of Rx HMC context */
 104 enum iavf_hmc_obj_rx_hsplit_0 {
 105         IAVF_HMC_OBJ_RX_HSPLIT_0_NO_SPLIT      = 0,
 106         IAVF_HMC_OBJ_RX_HSPLIT_0_SPLIT_L2      = 1,
 107         IAVF_HMC_OBJ_RX_HSPLIT_0_SPLIT_IP      = 2,
 108         IAVF_HMC_OBJ_RX_HSPLIT_0_SPLIT_TCP_UDP = 4,
 109         IAVF_HMC_OBJ_RX_HSPLIT_0_SPLIT_SCTP    = 8,
 110 };
 111
 112 /* fcoe_cntx and fcoe_filt are for debugging purpose only */
 113 struct iavf_hmc_obj_fcoe_cntx {
 114         u32 rsv[32];
 115 };
 116
 117 struct iavf_hmc_obj_fcoe_filt {
 118         u32 rsv[8];
 119 };
 120
 121 /* Context sizes for LAN objects */
 122 enum iavf_hmc_lan_object_size {
 123         IAVF_HMC_LAN_OBJ_SZ_8   = 0x3,
 124         IAVF_HMC_LAN_OBJ_SZ_16  = 0x4,
 125         IAVF_HMC_LAN_OBJ_SZ_32  = 0x5,
 126         IAVF_HMC_LAN_OBJ_SZ_64  = 0x6,
 127         IAVF_HMC_LAN_OBJ_SZ_128 = 0x7,
 128         IAVF_HMC_LAN_OBJ_SZ_256 = 0x8,
 129         IAVF_HMC_LAN_OBJ_SZ_512 = 0x9,
 130 };
 131
 132 #define IAVF_HMC_L2OBJ_BASE_ALIGNMENT 512
 133 #define IAVF_HMC_OBJ_SIZE_TXQ         128
 134 #define IAVF_HMC_OBJ_SIZE_RXQ         32
 135 #define IAVF_HMC_OBJ_SIZE_FCOE_CNTX   64
 136 #define IAVF_HMC_OBJ_SIZE_FCOE_FILT   64
 137
 138 enum iavf_hmc_lan_rsrc_type {
 139         IAVF_HMC_LAN_FULL  = 0,
 140         IAVF_HMC_LAN_TX    = 1,
 141         IAVF_HMC_LAN_RX    = 2,
 142         IAVF_HMC_FCOE_CTX  = 3,
 143         IAVF_HMC_FCOE_FILT = 4,
 144         IAVF_HMC_LAN_MAX   = 5
 145 };
 146
 147 enum iavf_hmc_model {
 148         IAVF_HMC_MODEL_DIRECT_PREFERRED = 0,
 149         IAVF_HMC_MODEL_DIRECT_ONLY      = 1,
 150         IAVF_HMC_MODEL_PAGED_ONLY       = 2,
 151         IAVF_HMC_MODEL_UNKNOWN,
 152 };
 153
 154 struct iavf_hmc_lan_create_obj_info {
 155         struct iavf_hmc_info *hmc_info;
 156         u32 rsrc_type;
 157         u32 start_idx;
 158         u32 count;
 159         enum iavf_sd_entry_type entry_type;
 160         u64 direct_mode_sz;
 161 };
 162
 163 struct iavf_hmc_lan_delete_obj_info {
 164         struct iavf_hmc_info *hmc_info;
 165         u32 rsrc_type;
 166         u32 start_idx;
 167         u32 count;
 168 };
 169
 170 enum iavf_status_code iavf_init_lan_hmc(struct iavf_hw *hw, u32 txq_num,
 171                                         u32 rxq_num, u32 fcoe_cntx_num,
 172                                         u32 fcoe_filt_num);
 173 enum iavf_status_code iavf_configure_lan_hmc(struct iavf_hw *hw,
 174                                              enum iavf_hmc_model model);
 175 enum iavf_status_code iavf_shutdown_lan_hmc(struct iavf_hw *hw);
 176
 177 u64 iavf_calculate_l2fpm_size(u32 txq_num, u32 rxq_num,
 178                               u32 fcoe_cntx_num, u32 fcoe_filt_num);
 179 enum iavf_status_code iavf_get_lan_tx_queue_context(struct iavf_hw *hw,
 180                                                     u16 queue,
 181                                                     struct iavf_hmc_obj_txq *s);
 182 enum iavf_status_code iavf_clear_lan_tx_queue_context(struct iavf_hw *hw,
 183                                                       u16 queue);
 184 enum iavf_status_code iavf_set_lan_tx_queue_context(struct iavf_hw *hw,
 185                                                     u16 queue,
 186                                                     struct iavf_hmc_obj_txq *s);
 187 enum iavf_status_code iavf_get_lan_rx_queue_context(struct iavf_hw *hw,
 188                                                     u16 queue,
 189                                                     struct iavf_hmc_obj_rxq *s);
 190 enum iavf_status_code iavf_clear_lan_rx_queue_context(struct iavf_hw *hw,
 191                                                       u16 queue);
 192 enum iavf_status_code iavf_set_lan_rx_queue_context(struct iavf_hw *hw,
 193                                                     u16 queue,
 194                                                     struct iavf_hmc_obj_rxq *s);
 195 enum iavf_status_code iavf_create_lan_hmc_object(struct iavf_hw *hw,
 196                                 struct iavf_hmc_lan_create_obj_info *info);
 197 enum iavf_status_code iavf_delete_lan_hmc_object(struct iavf_hw *hw,
 198                                 struct iavf_hmc_lan_delete_obj_info *info);
 199
 200 #endif /* _IAVF_LAN_HMC_H_ */