+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*******************************************************************************
-
- Intel 10 Gigabit PCI Express Linux driver
- Copyright(c) 1999 - 2012 Intel Corporation.
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#ifndef _IXGBE_DCB_H_
-#define _IXGBE_DCB_H_
-
-
-#include "ixgbe_type.h"
-
-/* DCB defines */
-/* DCB credit calculation defines */
-#define IXGBE_DCB_CREDIT_QUANTUM 64
-#define IXGBE_DCB_MAX_CREDIT_REFILL 200 /* 200 * 64B = 12800B */
-#define IXGBE_DCB_MAX_TSO_SIZE (32 * 1024) /* Max TSO pkt size in DCB*/
-#define IXGBE_DCB_MAX_CREDIT (2 * IXGBE_DCB_MAX_CREDIT_REFILL)
-
-/* 513 for 32KB TSO packet */
-#define IXGBE_DCB_MIN_TSO_CREDIT \
- ((IXGBE_DCB_MAX_TSO_SIZE / IXGBE_DCB_CREDIT_QUANTUM) + 1)
-
-/* DCB configuration defines */
-#define IXGBE_DCB_MAX_USER_PRIORITY 8
-#define IXGBE_DCB_MAX_BW_GROUP 8
-#define IXGBE_DCB_BW_PERCENT 100
-
-#define IXGBE_DCB_TX_CONFIG 0
-#define IXGBE_DCB_RX_CONFIG 1
-
-/* DCB capability defines */
-#define IXGBE_DCB_PG_SUPPORT 0x00000001
-#define IXGBE_DCB_PFC_SUPPORT 0x00000002
-#define IXGBE_DCB_BCN_SUPPORT 0x00000004
-#define IXGBE_DCB_UP2TC_SUPPORT 0x00000008
-#define IXGBE_DCB_GSP_SUPPORT 0x00000010
-
-struct ixgbe_dcb_support {
- u32 capabilities; /* DCB capabilities */
-
- /* Each bit represents a number of TCs configurable in the hw.
- * If 8 traffic classes can be configured, the value is 0x80. */
- u8 traffic_classes;
- u8 pfc_traffic_classes;
-};
-
-enum ixgbe_dcb_tsa {
- ixgbe_dcb_tsa_ets = 0,
- ixgbe_dcb_tsa_group_strict_cee,
- ixgbe_dcb_tsa_strict
-};
-
-/* Traffic class bandwidth allocation per direction */
-struct ixgbe_dcb_tc_path {
- u8 bwg_id; /* Bandwidth Group (BWG) ID */
- u8 bwg_percent; /* % of BWG's bandwidth */
- u8 link_percent; /* % of link bandwidth */
- u8 up_to_tc_bitmap; /* User Priority to Traffic Class mapping */
- u16 data_credits_refill; /* Credit refill amount in 64B granularity */
- u16 data_credits_max; /* Max credits for a configured packet buffer
- * in 64B granularity.*/
- enum ixgbe_dcb_tsa tsa; /* Link or Group Strict Priority */
-};
-
-enum ixgbe_dcb_pfc {
- ixgbe_dcb_pfc_disabled = 0,
- ixgbe_dcb_pfc_enabled,
- ixgbe_dcb_pfc_enabled_txonly,
- ixgbe_dcb_pfc_enabled_rxonly
-};
-
-/* Traffic class configuration */
-struct ixgbe_dcb_tc_config {
- struct ixgbe_dcb_tc_path path[2]; /* One each for Tx/Rx */
- enum ixgbe_dcb_pfc pfc; /* Class based flow control setting */
-
- u16 desc_credits_max; /* For Tx Descriptor arbitration */
- u8 tc; /* Traffic class (TC) */
-};
-
-enum ixgbe_dcb_pba {
- /* PBA[0-7] each use 64KB FIFO */
- ixgbe_dcb_pba_equal = PBA_STRATEGY_EQUAL,
- /* PBA[0-3] each use 80KB, PBA[4-7] each use 48KB */
- ixgbe_dcb_pba_80_48 = PBA_STRATEGY_WEIGHTED
-};
-
-struct ixgbe_dcb_num_tcs {
- u8 pg_tcs;
- u8 pfc_tcs;
-};
-
-struct ixgbe_dcb_config {
- struct ixgbe_dcb_tc_config tc_config[IXGBE_DCB_MAX_TRAFFIC_CLASS];
- struct ixgbe_dcb_support support;
- struct ixgbe_dcb_num_tcs num_tcs;
- u8 bw_percentage[2][IXGBE_DCB_MAX_BW_GROUP]; /* One each for Tx/Rx */
- bool pfc_mode_enable;
- bool round_robin_enable;
-
- enum ixgbe_dcb_pba rx_pba_cfg;
-
- u32 dcb_cfg_version; /* Not used...OS-specific? */
- u32 link_speed; /* For bandwidth allocation validation purpose */
- bool vt_mode;
-};
-
-/* DCB driver APIs */
-
-/* DCB rule checking */
-s32 ixgbe_dcb_check_config_cee(struct ixgbe_dcb_config *);
-
-/* DCB credits calculation */
-s32 ixgbe_dcb_calculate_tc_credits(u8 *, u16 *, u16 *, int);
-s32 ixgbe_dcb_calculate_tc_credits_cee(struct ixgbe_hw *,
- struct ixgbe_dcb_config *, u32, u8);
-
-/* DCB PFC */
-s32 ixgbe_dcb_config_pfc(struct ixgbe_hw *, u8, u8 *);
-s32 ixgbe_dcb_config_pfc_cee(struct ixgbe_hw *, struct ixgbe_dcb_config *);
-
-/* DCB stats */
-s32 ixgbe_dcb_config_tc_stats(struct ixgbe_hw *);
-s32 ixgbe_dcb_get_tc_stats(struct ixgbe_hw *, struct ixgbe_hw_stats *, u8);
-s32 ixgbe_dcb_get_pfc_stats(struct ixgbe_hw *, struct ixgbe_hw_stats *, u8);
-
-/* DCB config arbiters */
-s32 ixgbe_dcb_config_tx_desc_arbiter_cee(struct ixgbe_hw *,
- struct ixgbe_dcb_config *);
-s32 ixgbe_dcb_config_tx_data_arbiter_cee(struct ixgbe_hw *,
- struct ixgbe_dcb_config *);
-s32 ixgbe_dcb_config_rx_arbiter_cee(struct ixgbe_hw *,
- struct ixgbe_dcb_config *);
-
-/* DCB unpack routines */
-void ixgbe_dcb_unpack_pfc_cee(struct ixgbe_dcb_config *, u8 *, u8 *);
-void ixgbe_dcb_unpack_refill_cee(struct ixgbe_dcb_config *, int, u16 *);
-void ixgbe_dcb_unpack_max_cee(struct ixgbe_dcb_config *, u16 *);
-void ixgbe_dcb_unpack_bwgid_cee(struct ixgbe_dcb_config *, int, u8 *);
-void ixgbe_dcb_unpack_tsa_cee(struct ixgbe_dcb_config *, int, u8 *);
-void ixgbe_dcb_unpack_map_cee(struct ixgbe_dcb_config *, int, u8 *);
-
-/* DCB initialization */
-s32 ixgbe_dcb_hw_config(struct ixgbe_hw *, u16 *, u16 *, u8 *, u8 *, u8 *);
-s32 ixgbe_dcb_hw_config_cee(struct ixgbe_hw *, struct ixgbe_dcb_config *);
-#endif /* _IXGBE_DCB_H_ */
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