drivers/net/bnx2x/bnx2x_dcb.h

   1 /* bnx2x_dcb.h: Broadcom Everest network driver.
   2  *
   3  * Copyright 2009-2011 Broadcom Corporation
   4  *
   5  * Unless you and Broadcom execute a separate written software license
   6  * agreement governing use of this software, this software is licensed to you
   7  * under the terms of the GNU General Public License version 2, available
   8  * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
   9  *
  10  * Notwithstanding the above, under no circumstances may you combine this
  11  * software in any way with any other Broadcom software provided under a
  12  * license other than the GPL, without Broadcom's express prior written
  13  * consent.
  14  *
  15  * Maintained by: Eilon Greenstein <eilong@broadcom.com>
  16  * Written by: Dmitry Kravkov
  17  *
  18  */
  19 #ifndef BNX2X_DCB_H
  20 #define BNX2X_DCB_H
  21
  22 #include "bnx2x_hsi.h"
  23
  24 #define LLFC_DRIVER_TRAFFIC_TYPE_MAX 3 /* NW, iSCSI, FCoE */
  25 struct bnx2x_dcbx_app_params {
  26         u32 enabled;
  27         u32 traffic_type_priority[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
  28 };
  29
  30 #define E2_NUM_OF_COS                   2
  31 #define BNX2X_DCBX_COS_NOT_STRICT       0
  32 #define BNX2X_DCBX_COS_LOW_STRICT       1
  33 #define BNX2X_DCBX_COS_HIGH_STRICT      2
  34
  35 struct bnx2x_dcbx_cos_params {
  36         u32     bw_tbl;
  37         u32     pri_bitmask;
  38         u8      strict;
  39         u8      pauseable;
  40 };
  41
  42 struct bnx2x_dcbx_pg_params {
  43         u32 enabled;
  44         u8 num_of_cos; /* valid COS entries */
  45         struct bnx2x_dcbx_cos_params    cos_params[E2_NUM_OF_COS];
  46 };
  47
  48 struct bnx2x_dcbx_pfc_params {
  49         u32 enabled;
  50         u32 priority_non_pauseable_mask;
  51 };
  52
  53 struct bnx2x_dcbx_port_params {
  54         struct bnx2x_dcbx_pfc_params pfc;
  55         struct bnx2x_dcbx_pg_params  ets;
  56         struct bnx2x_dcbx_app_params app;
  57 };
  58
  59 #define BNX2X_DCBX_CONFIG_INV_VALUE                     (0xFFFFFFFF)
  60 #define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE           0
  61 #define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE            1
  62 #define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID   (BNX2X_DCBX_CONFIG_INV_VALUE)
  63
  64 struct bnx2x_config_lldp_params {
  65         u32 overwrite_settings;
  66         u32 msg_tx_hold;
  67         u32 msg_fast_tx;
  68         u32 tx_credit_max;
  69         u32 msg_tx_interval;
  70         u32 tx_fast;
  71 };
  72
  73 struct bnx2x_admin_priority_app_table {
  74                 u32 valid;
  75                 u32 priority;
  76 #define INVALID_TRAFFIC_TYPE_PRIORITY   (0xFFFFFFFF)
  77                 u32 traffic_type;
  78 #define TRAFFIC_TYPE_ETH                0
  79 #define TRAFFIC_TYPE_PORT               1
  80                 u32 app_id;
  81 };
  82
  83 struct bnx2x_config_dcbx_params {
  84         u32 overwrite_settings;
  85         u32 admin_dcbx_version;
  86         u32 admin_ets_enable;
  87         u32 admin_pfc_enable;
  88         u32 admin_tc_supported_tx_enable;
  89         u32 admin_ets_configuration_tx_enable;
  90         u32 admin_ets_recommendation_tx_enable;
  91         u32 admin_pfc_tx_enable;
  92         u32 admin_application_priority_tx_enable;
  93         u32 admin_ets_willing;
  94         u32 admin_ets_reco_valid;
  95         u32 admin_pfc_willing;
  96         u32 admin_app_priority_willing;
  97         u32 admin_configuration_bw_precentage[8];
  98         u32 admin_configuration_ets_pg[8];
  99         u32 admin_recommendation_bw_precentage[8];
 100         u32 admin_recommendation_ets_pg[8];
 101         u32 admin_pfc_bitmap;
 102         struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
 103         u32 admin_default_priority;
 104 };
 105
 106 #define GET_FLAGS(flags, bits)          ((flags) & (bits))
 107 #define SET_FLAGS(flags, bits)          ((flags) |= (bits))
 108 #define RESET_FLAGS(flags, bits)        ((flags) &= ~(bits))
 109
 110 enum {
 111         DCBX_READ_LOCAL_MIB,
 112         DCBX_READ_REMOTE_MIB
 113 };
 114
 115 #define ETH_TYPE_FCOE           (0x8906)
 116 #define TCP_PORT_ISCSI          (0xCBC)
 117
 118 #define PFC_VALUE_FRAME_SIZE                            (512)
 119 #define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
 120                                 ((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
 121
 122 #define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD                    130
 123 #define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD                   170
 124
 125
 126
 127 struct cos_entry_help_data {
 128         u32                     pri_join_mask;
 129         u32                     cos_bw;
 130         u8                      strict;
 131         bool                    pausable;
 132 };
 133
 134 struct cos_help_data {
 135         struct cos_entry_help_data      data[E2_NUM_OF_COS];
 136         u8                              num_of_cos;
 137 };
 138
 139 #define DCBX_ILLEGAL_PG                         (0xFF)
 140 #define DCBX_PFC_PRI_MASK                       (0xFF)
 141 #define DCBX_STRICT_PRIORITY                    (15)
 142 #define DCBX_INVALID_COS_BW                     (0xFFFFFFFF)
 143 #define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)         \
 144                         ((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
 145 #define DCBX_PFC_PRI_PAUSE_MASK(bp)             \
 146                                         ((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
 147 #define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)      \
 148                                 ((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
 149 #define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)  \
 150                         (DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
 151 #define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)  \
 152                         (pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
 153 #define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
 154                         ((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
 155 #define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)   \
 156                         (!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
 157                          IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
 158
 159
 160 struct pg_entry_help_data {
 161         u8      num_of_dif_pri;
 162         u8      pg;
 163         u32     pg_priority;
 164 };
 165
 166 struct pg_help_data {
 167         struct pg_entry_help_data       data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
 168         u8                              num_of_pg;
 169 };
 170
 171 /* forward DCB/PFC related declarations */
 172 struct bnx2x;
 173 void bnx2x_dcb_init_intmem_pfc(struct bnx2x *bp);
 174 void bnx2x_dcbx_update(struct work_struct *work);
 175 void bnx2x_dcbx_init_params(struct bnx2x *bp);
 176 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
 177
 178 enum {
 179         BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
 180 #ifdef BCM_CNIC
 181         BNX2X_DCBX_STATE_ISCSI_STOPPED,
 182 #endif
 183         BNX2X_DCBX_STATE_TX_PAUSED,
 184         BNX2X_DCBX_STATE_TX_RELEASED
 185 };
 186
 187 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
 188
 189 /* DCB netlink */
 190 #ifdef BCM_DCBNL
 191 extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
 192 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall);
 193 #endif /* BCM_DCBNL */
 194
 195 #endif /* BNX2X_DCB_H */