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path: root/include/linux/qed/eth_common.h
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/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and /or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __ETH_COMMON__
#define __ETH_COMMON__

/********************/
/* ETH FW CONSTANTS */
/********************/
#define ETH_HSI_VER_MAJOR                   3
#define ETH_HSI_VER_MINOR	10

#define ETH_HSI_VER_NO_PKT_LEN_TUNN	5

#define ETH_CACHE_LINE_SIZE                 64
#define ETH_RX_CQE_GAP	32
#define ETH_MAX_RAMROD_PER_CON                          8
#define ETH_TX_BD_PAGE_SIZE_BYTES                       4096
#define ETH_RX_BD_PAGE_SIZE_BYTES                       4096
#define ETH_RX_CQE_PAGE_SIZE_BYTES                      4096
#define ETH_RX_NUM_NEXT_PAGE_BDS                        2

#define ETH_MAX_TUNN_LSO_INNER_IPV4_OFFSET          253
#define ETH_MAX_TUNN_LSO_INNER_IPV6_OFFSET          251

#define ETH_TX_MIN_BDS_PER_NON_LSO_PKT                          1
#define ETH_TX_MAX_BDS_PER_NON_LSO_PACKET                       18
#define ETH_TX_MAX_BDS_PER_LSO_PACKET	255
#define ETH_TX_MAX_LSO_HDR_NBD                                          4
#define ETH_TX_MIN_BDS_PER_LSO_PKT                                      3
#define ETH_TX_MIN_BDS_PER_TUNN_IPV6_WITH_EXT_PKT       3
#define ETH_TX_MIN_BDS_PER_IPV6_WITH_EXT_PKT            2
#define ETH_TX_MIN_BDS_PER_PKT_W_LOOPBACK_MODE          2
#define ETH_TX_MAX_NON_LSO_PKT_LEN	(9700 - (4 + 4 + 12 + 8))
#define ETH_TX_MAX_LSO_HDR_BYTES                    510
#define ETH_TX_LSO_WINDOW_BDS_NUM	(18 - 1)
#define ETH_TX_LSO_WINDOW_MIN_LEN	9700
#define ETH_TX_MAX_LSO_PAYLOAD_LEN	0xFE000
#define ETH_TX_NUM_SAME_AS_LAST_ENTRIES	320
#define ETH_TX_INACTIVE_SAME_AS_LAST	0xFFFF

#define ETH_NUM_STATISTIC_COUNTERS                      MAX_NUM_VPORTS
#define ETH_NUM_STATISTIC_COUNTERS_DOUBLE_VF_ZONE \
	(ETH_NUM_STATISTIC_COUNTERS - MAX_NUM_VFS / 2)
#define ETH_NUM_STATISTIC_COUNTERS_QUAD_VF_ZONE \
	(ETH_NUM_STATISTIC_COUNTERS - 3 * MAX_NUM_VFS / 4)

/* Maximum number of buffers, used for RX packet placement */
#define ETH_RX_MAX_BUFF_PER_PKT             5

/* num of MAC/VLAN filters */
#define ETH_NUM_MAC_FILTERS                                     512
#define ETH_NUM_VLAN_FILTERS                            512

/* approx. multicast constants */
#define ETH_MULTICAST_BIN_FROM_MAC_SEED     0
#define ETH_MULTICAST_MAC_BINS                          256
#define ETH_MULTICAST_MAC_BINS_IN_REGS          (ETH_MULTICAST_MAC_BINS / 32)

/*  ethernet vport update constants */
#define ETH_FILTER_RULES_COUNT                          10
#define ETH_RSS_IND_TABLE_ENTRIES_NUM           128
#define ETH_RSS_KEY_SIZE_REGS                       10
#define ETH_RSS_ENGINE_NUM_K2               207
#define ETH_RSS_ENGINE_NUM_BB               127

/* TPA constants */
#define ETH_TPA_MAX_AGGS_NUM              64
#define ETH_TPA_CQE_START_LEN_LIST_SIZE   ETH_RX_MAX_BUFF_PER_PKT
#define ETH_TPA_CQE_CONT_LEN_LIST_SIZE    6
#define ETH_TPA_CQE_END_LEN_LIST_SIZE     4

/* Control frame check constants */
#define ETH_CTL_FRAME_ETH_TYPE_NUM	4

struct eth_tx_1st_bd_flags {
	u8 bitfields;
#define ETH_TX_1ST_BD_FLAGS_START_BD_MASK         0x1
#define ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT        0
#define ETH_TX_1ST_BD_FLAGS_FORCE_VLAN_MODE_MASK  0x1
#define ETH_TX_1ST_BD_FLAGS_FORCE_VLAN_MODE_SHIFT 1
#define ETH_TX_1ST_BD_FLAGS_IP_CSUM_MASK          0x1
#define ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT         2
#define ETH_TX_1ST_BD_FLAGS_L4_CSUM_MASK          0x1
#define ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT         3
#define ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_MASK   0x1
#define ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT  4
#define ETH_TX_1ST_BD_FLAGS_LSO_MASK              0x1
#define ETH_TX_1ST_BD_FLAGS_LSO_SHIFT             5
#define ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_MASK     0x1
#define ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT    6
#define ETH_TX_1ST_BD_FLAGS_TUNN_L4_CSUM_MASK     0x1
#define ETH_TX_1ST_BD_FLAGS_TUNN_L4_CSUM_SHIFT    7
};

/* The parsing information data fo rthe first tx bd of a given packet. */
struct eth_tx_data_1st_bd {
	__le16 vlan;
	u8 nbds;
	struct eth_tx_1st_bd_flags bd_flags;
	__le16 bitfields;
#define ETH_TX_DATA_1ST_BD_TUNN_FLAG_MASK  0x1
#define ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT 0
#define ETH_TX_DATA_1ST_BD_RESERVED0_MASK          0x1
#define ETH_TX_DATA_1ST_BD_RESERVED0_SHIFT         1
#define ETH_TX_DATA_1ST_BD_PKT_LEN_MASK    0x3FFF
#define ETH_TX_DATA_1ST_BD_PKT_LEN_SHIFT   2
};

/* The parsing information data for the second tx bd of a given packet. */
struct eth_tx_data_2nd_bd {
	__le16 tunn_ip_size;
	__le16	bitfields1;
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_L2_HDR_SIZE_W_MASK  0xF
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_L2_HDR_SIZE_W_SHIFT 0
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_ETH_TYPE_MASK       0x3
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_ETH_TYPE_SHIFT      4
#define ETH_TX_DATA_2ND_BD_DEST_PORT_MODE_MASK            0x3
#define ETH_TX_DATA_2ND_BD_DEST_PORT_MODE_SHIFT           6
#define ETH_TX_DATA_2ND_BD_START_BD_MASK                  0x1
#define ETH_TX_DATA_2ND_BD_START_BD_SHIFT                 8
#define ETH_TX_DATA_2ND_BD_TUNN_TYPE_MASK                 0x3
#define ETH_TX_DATA_2ND_BD_TUNN_TYPE_SHIFT                9
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_IPV6_MASK           0x1
#define ETH_TX_DATA_2ND_BD_TUNN_INNER_IPV6_SHIFT          11
#define ETH_TX_DATA_2ND_BD_IPV6_EXT_MASK                  0x1
#define ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT                 12
#define ETH_TX_DATA_2ND_BD_TUNN_IPV6_EXT_MASK             0x1
#define ETH_TX_DATA_2ND_BD_TUNN_IPV6_EXT_SHIFT            13
#define ETH_TX_DATA_2ND_BD_L4_UDP_MASK                    0x1
#define ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT                   14
#define ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_MASK       0x1
#define ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT      15
	__le16 bitfields2;
#define ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK     0x1FFF
#define ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT    0
#define ETH_TX_DATA_2ND_BD_RESERVED0_MASK                 0x7
#define ETH_TX_DATA_2ND_BD_RESERVED0_SHIFT                13
};

/* Firmware data for L2-EDPM packet. */
struct eth_edpm_fw_data {
	struct eth_tx_data_1st_bd data_1st_bd;
	struct eth_tx_data_2nd_bd data_2nd_bd;
	__le32 reserved;
};

struct eth_fast_path_cqe_fw_debug {
	__le16 reserved2;
};

/*  tunneling parsing flags */
struct eth_tunnel_parsing_flags {
	u8 flags;
#define	ETH_TUNNEL_PARSING_FLAGS_TYPE_MASK		0x3
#define	ETH_TUNNEL_PARSING_FLAGS_TYPE_SHIFT		0
#define	ETH_TUNNEL_PARSING_FLAGS_TENNANT_ID_EXIST_MASK	0x1
#define	ETH_TUNNEL_PARSING_FLAGS_TENNANT_ID_EXIST_SHIFT	2
#define	ETH_TUNNEL_PARSING_FLAGS_NEXT_PROTOCOL_MASK	0x3
#define	ETH_TUNNEL_PARSING_FLAGS_NEXT_PROTOCOL_SHIFT	3
#define	ETH_TUNNEL_PARSING_FLAGS_FIRSTHDRIPMATCH_MASK	0x1
#define	ETH_TUNNEL_PARSING_FLAGS_FIRSTHDRIPMATCH_SHIFT	5
#define	ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_MASK	0x1
#define	ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_SHIFT	6
#define	ETH_TUNNEL_PARSING_FLAGS_IPV4_OPTIONS_MASK	0x1
#define	ETH_TUNNEL_PARSING_FLAGS_IPV4_OPTIONS_SHIFT	7
};

/* PMD flow control bits */
struct eth_pmd_flow_flags {
	u8 flags;
#define ETH_PMD_FLOW_FLAGS_VALID_MASK	0x1
#define ETH_PMD_FLOW_FLAGS_VALID_SHIFT	0
#define ETH_PMD_FLOW_FLAGS_TOGGLE_MASK	0x1
#define ETH_PMD_FLOW_FLAGS_TOGGLE_SHIFT	1
#define ETH_PMD_FLOW_FLAGS_RESERVED_MASK 0x3F
#define ETH_PMD_FLOW_FLAGS_RESERVED_SHIFT 2
};

/* Regular ETH Rx FP CQE. */
struct eth_fast_path_rx_reg_cqe {
	u8 type;
	u8 bitfields;
#define ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE_MASK  0x7
#define ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE_SHIFT 0
#define ETH_FAST_PATH_RX_REG_CQE_TC_MASK             0xF
#define ETH_FAST_PATH_RX_REG_CQE_TC_SHIFT            3
#define ETH_FAST_PATH_RX_REG_CQE_RESERVED0_MASK      0x1
#define ETH_FAST_PATH_RX_REG_CQE_RESERVED0_SHIFT     7
	__le16 pkt_len;
	struct parsing_and_err_flags pars_flags;
	__le16 vlan_tag;
	__le32 rss_hash;
	__le16 len_on_first_bd;
	u8 placement_offset;
	struct eth_tunnel_parsing_flags tunnel_pars_flags;
	u8 bd_num;
	u8 reserved[9];
	struct eth_fast_path_cqe_fw_debug fw_debug;
	u8 reserved1[3];
	struct eth_pmd_flow_flags pmd_flags;
};

/* TPA-continue ETH Rx FP CQE. */
struct eth_fast_path_rx_tpa_cont_cqe {
	u8 type;
	u8 tpa_agg_index;
	__le16 len_list[ETH_TPA_CQE_CONT_LEN_LIST_SIZE];
	u8 reserved;
	u8 reserved1;
	__le16 reserved2[ETH_TPA_CQE_CONT_LEN_LIST_SIZE];
	u8 reserved3[3];
	struct eth_pmd_flow_flags pmd_flags;
};

/* TPA-end ETH Rx FP CQE. */
struct eth_fast_path_rx_tpa_end_cqe {
	u8 type;
	u8 tpa_agg_index;
	__le16 total_packet_len;
	u8 num_of_bds;
	u8 end_reason;
	__le16 num_of_coalesced_segs;
	__le32 ts_delta;
	__le16 len_list[ETH_TPA_CQE_END_LEN_LIST_SIZE];
	__le16 reserved3[ETH_TPA_CQE_END_LEN_LIST_SIZE];
	__le16 reserved1;
	u8 reserved2;
	struct eth_pmd_flow_flags pmd_flags;
};

/* TPA-start ETH Rx FP CQE. */
struct eth_fast_path_rx_tpa_start_cqe {
	u8 type;
	u8 bitfields;
#define ETH_FAST_PATH_RX_TPA_START_CQE_RSS_HASH_TYPE_MASK  0x7
#define ETH_FAST_PATH_RX_TPA_START_CQE_RSS_HASH_TYPE_SHIFT 0
#define ETH_FAST_PATH_RX_TPA_START_CQE_TC_MASK             0xF
#define ETH_FAST_PATH_RX_TPA_START_CQE_TC_SHIFT            3
#define ETH_FAST_PATH_RX_TPA_START_CQE_RESERVED0_MASK      0x1
#define ETH_FAST_PATH_RX_TPA_START_CQE_RESERVED0_SHIFT     7
	__le16 seg_len;
	struct parsing_and_err_flags pars_flags;
	__le16 vlan_tag;
	__le32 rss_hash;
	__le16 len_on_first_bd;
	u8 placement_offset;
	struct eth_tunnel_parsing_flags tunnel_pars_flags;
	u8 tpa_agg_index;
	u8 header_len;
	__le16 ext_bd_len_list[ETH_TPA_CQE_START_LEN_LIST_SIZE];
	struct eth_fast_path_cqe_fw_debug fw_debug;
	u8 reserved;
	struct eth_pmd_flow_flags pmd_flags;
};

/* The L4 pseudo checksum mode for Ethernet */
enum eth_l4_pseudo_checksum_mode {
	ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH,
	ETH_L4_PSEUDO_CSUM_ZERO_LENGTH,
	MAX_ETH_L4_PSEUDO_CHECKSUM_MODE
};

struct eth_rx_bd {
	struct regpair addr;
};

/* regular ETH Rx SP CQE */
struct eth_slow_path_rx_cqe {
	u8	type;
	u8	ramrod_cmd_id;
	u8	error_flag;
	u8	reserved[25];
	__le16	echo;
	u8	reserved1;
	struct eth_pmd_flow_flags pmd_flags;
};

/* union for all ETH Rx CQE types */
union eth_rx_cqe {
	struct eth_fast_path_rx_reg_cqe		fast_path_regular;
	struct eth_fast_path_rx_tpa_start_cqe	fast_path_tpa_start;
	struct eth_fast_path_rx_tpa_cont_cqe	fast_path_tpa_cont;
	struct eth_fast_path_rx_tpa_end_cqe	fast_path_tpa_end;
	struct eth_slow_path_rx_cqe		slow_path;
};

/* ETH Rx CQE type */
enum eth_rx_cqe_type {
	ETH_RX_CQE_TYPE_UNUSED,
	ETH_RX_CQE_TYPE_REGULAR,
	ETH_RX_CQE_TYPE_SLOW_PATH,
	ETH_RX_CQE_TYPE_TPA_START,
	ETH_RX_CQE_TYPE_TPA_CONT,
	ETH_RX_CQE_TYPE_TPA_END,
	MAX_ETH_RX_CQE_TYPE
};

struct eth_rx_pmd_cqe {
	union eth_rx_cqe cqe;
	u8 reserved[ETH_RX_CQE_GAP];
};

enum eth_rx_tunn_type {
	ETH_RX_NO_TUNN,
	ETH_RX_TUNN_GENEVE,
	ETH_RX_TUNN_GRE,
	ETH_RX_TUNN_VXLAN,
	MAX_ETH_RX_TUNN_TYPE
};

/*  Aggregation end reason. */
enum eth_tpa_end_reason {
	ETH_AGG_END_UNUSED,
	ETH_AGG_END_SP_UPDATE,
	ETH_AGG_END_MAX_LEN,
	ETH_AGG_END_LAST_SEG,
	ETH_AGG_END_TIMEOUT,
	ETH_AGG_END_NOT_CONSISTENT,
	ETH_AGG_END_OUT_OF_ORDER,
	ETH_AGG_END_NON_TPA_SEG,
	MAX_ETH_TPA_END_REASON
};

/* The first tx bd of a given packet */
struct eth_tx_1st_bd {
	struct regpair			addr;
	__le16				nbytes;
	struct eth_tx_data_1st_bd	data;
};

/* The second tx bd of a given packet */
struct eth_tx_2nd_bd {
	struct regpair			addr;
	__le16				nbytes;
	struct eth_tx_data_2nd_bd	data;
};

/* The parsing information data for the third tx bd of a given packet. */
struct eth_tx_data_3rd_bd {
	__le16 lso_mss;
	__le16 bitfields;
#define ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK  0xF
#define ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT 0
#define ETH_TX_DATA_3RD_BD_HDR_NBD_MASK         0xF
#define ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT        4
#define ETH_TX_DATA_3RD_BD_START_BD_MASK        0x1
#define ETH_TX_DATA_3RD_BD_START_BD_SHIFT       8
#define ETH_TX_DATA_3RD_BD_RESERVED0_MASK       0x7F
#define ETH_TX_DATA_3RD_BD_RESERVED0_SHIFT      9
	u8 tunn_l4_hdr_start_offset_w;
	u8 tunn_hdr_size_w;
};

/* The third tx bd of a given packet */
struct eth_tx_3rd_bd {
	struct regpair			addr;
	__le16				nbytes;
	struct eth_tx_data_3rd_bd	data;
};

/* Complementary information for the regular tx bd of a given packet. */
struct eth_tx_data_bd {
	__le16	reserved0;
	__le16	bitfields;
#define ETH_TX_DATA_BD_RESERVED1_MASK  0xFF
#define ETH_TX_DATA_BD_RESERVED1_SHIFT 0
#define ETH_TX_DATA_BD_START_BD_MASK   0x1
#define ETH_TX_DATA_BD_START_BD_SHIFT  8
#define ETH_TX_DATA_BD_RESERVED2_MASK  0x7F
#define ETH_TX_DATA_BD_RESERVED2_SHIFT 9
	__le16 reserved3;
};

/* The common non-special TX BD ring element */
struct eth_tx_bd {
	struct regpair	addr;
	__le16		nbytes;
	struct eth_tx_data_bd	data;
};

union eth_tx_bd_types {
	struct eth_tx_1st_bd first_bd;
	struct eth_tx_2nd_bd second_bd;
	struct eth_tx_3rd_bd third_bd;
	struct eth_tx_bd reg_bd;
};

/* Mstorm Queue Zone */
enum eth_tx_tunn_type {
	ETH_TX_TUNN_GENEVE,
	ETH_TX_TUNN_TTAG,
	ETH_TX_TUNN_GRE,
	ETH_TX_TUNN_VXLAN,
	MAX_ETH_TX_TUNN_TYPE
};

/* Ystorm Queue Zone */
struct xstorm_eth_queue_zone {
	struct coalescing_timeset int_coalescing_timeset;
	u8 reserved[7];
};

/* ETH doorbell data */
struct eth_db_data {
	u8 params;
#define ETH_DB_DATA_DEST_MASK         0x3
#define ETH_DB_DATA_DEST_SHIFT        0
#define ETH_DB_DATA_AGG_CMD_MASK      0x3
#define ETH_DB_DATA_AGG_CMD_SHIFT     2
#define ETH_DB_DATA_BYPASS_EN_MASK    0x1
#define ETH_DB_DATA_BYPASS_EN_SHIFT   4
#define ETH_DB_DATA_RESERVED_MASK     0x1
#define ETH_DB_DATA_RESERVED_SHIFT    5
#define ETH_DB_DATA_AGG_VAL_SEL_MASK  0x3
#define ETH_DB_DATA_AGG_VAL_SEL_SHIFT 6
	u8 agg_flags;
	__le16 bd_prod;
};

#endif /* __ETH_COMMON__ */