text: /* bnx2x_dcb.h: Broadcom Everest network driver.
   *
   * Copyright 2009-2011 Broadcom Corporation
   *
   * Unless you and Broadcom execute a separate written software license
   * agreement governing use of this software, this software is licensed to you
   * under the terms of the GNU General Public License version 2, available
   * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
   *
   * Notwithstanding the above, under no circumstances may you combine this
   * software in any way with any other Broadcom software provided under a
   * license other than the GPL, without Broadcom's express prior written
   * consent.
   *
   * Maintained by: Eilon Greenstein <eilong@broadcom.com>
   * Written by: Dmitry Kravkov
   *
   */
  #ifndef BNX2X_DCB_H
  #define BNX2X_DCB_H
  
  #include "bnx2x_hsi.h"
  
  #define LLFC_DRIVER_TRAFFIC_TYPE_MAX 3 /* NW, iSCSI, FCoE */
  struct bnx2x_dcbx_app_params {
  	u32 enabled;
  	u32 traffic_type_priority[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
  };
  
  #define E2_NUM_OF_COS			2
  #define BNX2X_DCBX_COS_NOT_STRICT	0
  #define BNX2X_DCBX_COS_LOW_STRICT	1
  #define BNX2X_DCBX_COS_HIGH_STRICT	2
  
  struct bnx2x_dcbx_cos_params {
  	u32	bw_tbl;
  	u32	pri_bitmask;
  	u8	strict;
  	u8	pauseable;
  };
  
  struct bnx2x_dcbx_pg_params {
  	u32 enabled;
  	u8 num_of_cos; /* valid COS entries */
  	struct bnx2x_dcbx_cos_params	cos_params[E2_NUM_OF_COS];
  };
  
  struct bnx2x_dcbx_pfc_params {
  	u32 enabled;
  	u32 priority_non_pauseable_mask;
  };
  
  struct bnx2x_dcbx_port_params {
  	struct bnx2x_dcbx_pfc_params pfc;
  	struct bnx2x_dcbx_pg_params  ets;
  	struct bnx2x_dcbx_app_params app;
  };
  
  #define BNX2X_DCBX_CONFIG_INV_VALUE			(0xFFFFFFFF)
  #define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE		0
  #define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE		1
  #define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID	(BNX2X_DCBX_CONFIG_INV_VALUE)
  
  struct bnx2x_config_lldp_params {
  	u32 overwrite_settings;
  	u32 msg_tx_hold;
  	u32 msg_fast_tx;
  	u32 tx_credit_max;
  	u32 msg_tx_interval;
  	u32 tx_fast;
  };
  
  struct bnx2x_admin_priority_app_table {
  		u32 valid;
  		u32 priority;
  #define INVALID_TRAFFIC_TYPE_PRIORITY	(0xFFFFFFFF)
  		u32 traffic_type;
  #define TRAFFIC_TYPE_ETH		0
  #define TRAFFIC_TYPE_PORT		1
  		u32 app_id;
  };
  
  struct bnx2x_config_dcbx_params {
  	u32 overwrite_settings;
  	u32 admin_dcbx_version;
  	u32 admin_ets_enable;
  	u32 admin_pfc_enable;
  	u32 admin_tc_supported_tx_enable;
  	u32 admin_ets_configuration_tx_enable;
  	u32 admin_ets_recommendation_tx_enable;
  	u32 admin_pfc_tx_enable;
  	u32 admin_application_priority_tx_enable;
  	u32 admin_ets_willing;
  	u32 admin_ets_reco_valid;
  	u32 admin_pfc_willing;
  	u32 admin_app_priority_willing;
  	u32 admin_configuration_bw_precentage[8];
  	u32 admin_configuration_ets_pg[8];
  	u32 admin_recommendation_bw_precentage[8];
  	u32 admin_recommendation_ets_pg[8];
  	u32 admin_pfc_bitmap;
  	struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
  	u32 admin_default_priority;
  };
  
  #define GET_FLAGS(flags, bits)		((flags) & (bits))
  #define SET_FLAGS(flags, bits)		((flags) |= (bits))
  #define RESET_FLAGS(flags, bits)	((flags) &= ~(bits))
  
  enum {
  	DCBX_READ_LOCAL_MIB,
  	DCBX_READ_REMOTE_MIB
  };
  
  #define ETH_TYPE_FCOE		(0x8906)
  #define TCP_PORT_ISCSI		(0xCBC)
  
  #define PFC_VALUE_FRAME_SIZE				(512)
  #define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
  				((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
  
  #define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD			130
  #define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD			170
  
  struct cos_entry_help_data {
  	u32			pri_join_mask;
  	u32			cos_bw;
  	u8			strict;
  	bool			pausable;
  };
  
  struct cos_help_data {
  	struct cos_entry_help_data	data[E2_NUM_OF_COS];
  	u8				num_of_cos;
  };
  
  #define DCBX_ILLEGAL_PG				(0xFF)
  #define DCBX_PFC_PRI_MASK			(0xFF)
  #define DCBX_STRICT_PRIORITY			(15)
  #define DCBX_INVALID_COS_BW			(0xFFFFFFFF)
  #define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)		\
  			((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
  #define DCBX_PFC_PRI_PAUSE_MASK(bp)		\
  					((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
  #define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)	\
  				((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
  #define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)	\
  			(DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
  #define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)	\
  			(pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
  #define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
  			((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
  #define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)	\
  			(!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
  			 IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
  
  struct pg_entry_help_data {
  	u8	num_of_dif_pri;
  	u8	pg;
  	u32	pg_priority;
  };
  
  struct pg_help_data {
  	struct pg_entry_help_data	data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
  	u8				num_of_pg;
  };
  
  /* forward DCB/PFC related declarations */
  struct bnx2x;
  void bnx2x_dcb_init_intmem_pfc(struct bnx2x *bp);
  void bnx2x_dcbx_update(struct work_struct *work);
  void bnx2x_dcbx_init_params(struct bnx2x *bp);
  void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
  
  enum {
  	BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
  #ifdef BCM_CNIC
  	BNX2X_DCBX_STATE_ISCSI_STOPPED,
  #endif
  	BNX2X_DCBX_STATE_TX_PAUSED,
  	BNX2X_DCBX_STATE_TX_RELEASED
  };
  
  void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
  
  /* DCB netlink */
  #ifdef BCM_DCBNL
  extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
  int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall);
  #endif /* BCM_DCBNL */
  
  #endif /* BNX2X_DCB_H */
  