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 DCBX_COS_MAX_NUM_E2     DCBX_E2E3_MAX_NUM_COS
  31 /* bnx2x currently limits numbers of supported COSes to 3 to be extended to 6 */
  32 #define BNX2X_MAX_COS_SUPPORT   3
  33 #define DCBX_COS_MAX_NUM_E3B0   BNX2X_MAX_COS_SUPPORT
  34 #define DCBX_COS_MAX_NUM        BNX2X_MAX_COS_SUPPORT
  35
  36 struct bnx2x_dcbx_cos_params {
  37         u32     bw_tbl;
  38         u32     pri_bitmask;
  39         /*
  40          * strict priority: valid values are 0..5; 0 is highest priority.
  41          * There can't be two COSes with the same priority.
  42          */
  43         u8      strict;
  44 #define BNX2X_DCBX_STRICT_INVALID                       DCBX_COS_MAX_NUM
  45 #define BNX2X_DCBX_STRICT_COS_HIGHEST                   0
  46 #define BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(sp)        ((sp) + 1)
  47         u8      pauseable;
  48 };
  49
  50 struct bnx2x_dcbx_pg_params {
  51         u32 enabled;
  52         u8 num_of_cos; /* valid COS entries */
  53         struct bnx2x_dcbx_cos_params    cos_params[DCBX_COS_MAX_NUM];
  54 };
  55
  56 struct bnx2x_dcbx_pfc_params {
  57         u32 enabled;
  58         u32 priority_non_pauseable_mask;
  59 };
  60
  61 struct bnx2x_dcbx_port_params {
  62         struct bnx2x_dcbx_pfc_params pfc;
  63         struct bnx2x_dcbx_pg_params  ets;
  64         struct bnx2x_dcbx_app_params app;
  65 };
  66
  67 #define BNX2X_DCBX_CONFIG_INV_VALUE                     (0xFFFFFFFF)
  68 #define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE           0
  69 #define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE            1
  70 #define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID   (BNX2X_DCBX_CONFIG_INV_VALUE)
  71 #define BNX2X_IS_ETS_ENABLED(bp) ((bp)->dcb_state == BNX2X_DCB_STATE_ON &&\
  72                                   (bp)->dcbx_port_params.ets.enabled)
  73
  74 struct bnx2x_config_lldp_params {
  75         u32 overwrite_settings;
  76         u32 msg_tx_hold;
  77         u32 msg_fast_tx;
  78         u32 tx_credit_max;
  79         u32 msg_tx_interval;
  80         u32 tx_fast;
  81 };
  82
  83 struct bnx2x_admin_priority_app_table {
  84                 u32 valid;
  85                 u32 priority;
  86 #define INVALID_TRAFFIC_TYPE_PRIORITY   (0xFFFFFFFF)
  87                 u32 traffic_type;
  88 #define TRAFFIC_TYPE_ETH                0
  89 #define TRAFFIC_TYPE_PORT               1
  90                 u32 app_id;
  91 };
  92
  93 struct bnx2x_config_dcbx_params {
  94         u32 overwrite_settings;
  95         u32 admin_dcbx_version;
  96         u32 admin_ets_enable;
  97         u32 admin_pfc_enable;
  98         u32 admin_tc_supported_tx_enable;
  99         u32 admin_ets_configuration_tx_enable;
 100         u32 admin_ets_recommendation_tx_enable;
 101         u32 admin_pfc_tx_enable;
 102         u32 admin_application_priority_tx_enable;
 103         u32 admin_ets_willing;
 104         u32 admin_ets_reco_valid;
 105         u32 admin_pfc_willing;
 106         u32 admin_app_priority_willing;
 107         u32 admin_configuration_bw_precentage[8];
 108         u32 admin_configuration_ets_pg[8];
 109         u32 admin_recommendation_bw_precentage[8];
 110         u32 admin_recommendation_ets_pg[8];
 111         u32 admin_pfc_bitmap;
 112         struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
 113         u32 admin_default_priority;
 114 };
 115
 116 #define GET_FLAGS(flags, bits)          ((flags) & (bits))
 117 #define SET_FLAGS(flags, bits)          ((flags) |= (bits))
 118 #define RESET_FLAGS(flags, bits)        ((flags) &= ~(bits))
 119
 120 enum {
 121         DCBX_READ_LOCAL_MIB,
 122         DCBX_READ_REMOTE_MIB
 123 };
 124
 125 #define ETH_TYPE_FCOE           (0x8906)
 126 #define TCP_PORT_ISCSI          (0xCBC)
 127
 128 #define PFC_VALUE_FRAME_SIZE                            (512)
 129 #define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
 130                                 ((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
 131
 132 #define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD                    130
 133 #define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD                   170
 134
 135
 136
 137 struct cos_entry_help_data {
 138         u32                     pri_join_mask;
 139         u32                     cos_bw;
 140         u8                      strict;
 141         bool                    pausable;
 142 };
 143
 144 struct cos_help_data {
 145         struct cos_entry_help_data      data[DCBX_COS_MAX_NUM];
 146         u8                              num_of_cos;
 147 };
 148
 149 #define DCBX_ILLEGAL_PG                         (0xFF)
 150 #define DCBX_PFC_PRI_MASK                       (0xFF)
 151 #define DCBX_STRICT_PRIORITY                    (15)
 152 #define DCBX_INVALID_COS_BW                     (0xFFFFFFFF)
 153 #define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)         \
 154                         ((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
 155 #define DCBX_PFC_PRI_PAUSE_MASK(bp)             \
 156                                         ((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
 157 #define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)      \
 158                                 ((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
 159 #define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)  \
 160                         (DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
 161 #define DCBX_IS_PFC_PRI_SOME_PAUSE(bp, pg_pri)  \
 162                         (0 != DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri))
 163 #define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)  \
 164                         (pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
 165 #define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
 166                         ((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
 167 #define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)   \
 168                         (!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
 169                          IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
 170
 171
 172 struct pg_entry_help_data {
 173         u8      num_of_dif_pri;
 174         u8      pg;
 175         u32     pg_priority;
 176 };
 177
 178 struct pg_help_data {
 179         struct pg_entry_help_data       data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
 180         u8                              num_of_pg;
 181 };
 182
 183 /* forward DCB/PFC related declarations */
 184 struct bnx2x;
 185 void bnx2x_dcbx_update(struct work_struct *work);
 186 void bnx2x_dcbx_init_params(struct bnx2x *bp);
 187 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
 188
 189 enum {
 190         BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
 191         BNX2X_DCBX_STATE_TX_PAUSED,
 192         BNX2X_DCBX_STATE_TX_RELEASED
 193 };
 194
 195 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
 196 void bnx2x_dcbx_pmf_update(struct bnx2x *bp);
 197 /* DCB netlink */
 198 #ifdef BCM_DCBNL
 199 extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
 200 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall);
 201 #endif /* BCM_DCBNL */
 202
 203 #endif /* BNX2X_DCB_H */