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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#ifndef _ENA_ETH_IO_H_
#define _ENA_ETH_IO_H_
enum ena_eth_io_l3_proto_index {
ENA_ETH_IO_L3_PROTO_UNKNOWN = 0,
ENA_ETH_IO_L3_PROTO_IPV4 = 8,
ENA_ETH_IO_L3_PROTO_IPV6 = 11,
ENA_ETH_IO_L3_PROTO_FCOE = 21,
ENA_ETH_IO_L3_PROTO_ROCE = 22,
};
enum ena_eth_io_l4_proto_index {
ENA_ETH_IO_L4_PROTO_UNKNOWN = 0,
ENA_ETH_IO_L4_PROTO_TCP = 12,
ENA_ETH_IO_L4_PROTO_UDP = 13,
ENA_ETH_IO_L4_PROTO_ROUTEABLE_ROCE = 23,
};
struct ena_eth_io_tx_desc {
/* 15:0 : length - Buffer length in bytes, must
* include any packet trailers that the ENA supposed
* to update like End-to-End CRC, Authentication GMAC
* etc. This length must not include the
* 'Push_Buffer' length. This length must not include
* the 4-byte added in the end for 802.3 Ethernet FCS
* 21:16 : req_id_hi - Request ID[15:10]
* 22 : reserved22 - MBZ
* 23 : meta_desc - MBZ
* 24 : phase
* 25 : reserved1 - MBZ
* 26 : first - Indicates first descriptor in
* transaction
* 27 : last - Indicates last descriptor in
* transaction
* 28 : comp_req - Indicates whether completion
* should be posted, after packet is transmitted.
* Valid only for first descriptor
* 30:29 : reserved29 - MBZ
* 31 : reserved31 - MBZ
*/
u32 len_ctrl;
/* 3:0 : l3_proto_idx - L3 protocol. This field
* required when l3_csum_en,l3_csum or tso_en are set.
* 4 : DF - IPv4 DF, must be 0 if packet is IPv4 and
* DF flags of the IPv4 header is 0. Otherwise must
* be set to 1
* 6:5 : reserved5
* 7 : tso_en - Enable TSO, For TCP only.
* 12:8 : l4_proto_idx - L4 protocol. This field need
* to be set when l4_csum_en or tso_en are set.
* 13 : l3_csum_en - enable IPv4 header checksum.
* 14 : l4_csum_en - enable TCP/UDP checksum.
* 15 : ethernet_fcs_dis - when set, the controller
* will not append the 802.3 Ethernet Frame Check
* Sequence to the packet
* 16 : reserved16
* 17 : l4_csum_partial - L4 partial checksum. when
* set to 0, the ENA calculates the L4 checksum,
* where the Destination Address required for the
* TCP/UDP pseudo-header is taken from the actual
* packet L3 header. when set to 1, the ENA doesn't
* calculate the sum of the pseudo-header, instead,
* the checksum field of the L4 is used instead. When
* TSO enabled, the checksum of the pseudo-header
* must not include the tcp length field. L4 partial
* checksum should be used for IPv6 packet that
* contains Routing Headers.
* 20:18 : reserved18 - MBZ
* 21 : reserved21 - MBZ
* 31:22 : req_id_lo - Request ID[9:0]
*/
u32 meta_ctrl;
u32 buff_addr_lo;
/* address high and header size
* 15:0 : addr_hi - Buffer Pointer[47:32]
* 23:16 : reserved16_w2
* 31:24 : header_length - Header length. For Low
* Latency Queues, this fields indicates the number
* of bytes written to the headers' memory. For
* normal queues, if packet is TCP or UDP, and longer
* than max_header_size, then this field should be
* set to the sum of L4 header offset and L4 header
* size(without options), otherwise, this field
* should be set to 0. For both modes, this field
* must not exceed the max_header_size.
* max_header_size value is reported by the Max
* Queues Feature descriptor
*/
u32 buff_addr_hi_hdr_sz;
};
struct ena_eth_io_tx_meta_desc {
/* 9:0 : req_id_lo - Request ID[9:0]
* 11:10 : reserved10 - MBZ
* 12 : reserved12 - MBZ
* 13 : reserved13 - MBZ
* 14 : ext_valid - if set, offset fields in Word2
* are valid Also MSS High in Word 0 and bits [31:24]
* in Word 3
* 15 : reserved15
* 19:16 : mss_hi
* 20 : eth_meta_type - 0: Tx Metadata Descriptor, 1:
* Extended Metadata Descriptor
* 21 : meta_store - Store extended metadata in queue
* cache
* 22 : reserved22 - MBZ
* 23 : meta_desc - MBO
* 24 : phase
* 25 : reserved25 - MBZ
* 26 : first - Indicates first descriptor in
* transaction
* 27 : last - Indicates last descriptor in
* transaction
* 28 : comp_req - Indicates whether completion
* should be posted, after packet is transmitted.
* Valid only for first descriptor
* 30:29 : reserved29 - MBZ
* 31 : reserved31 - MBZ
*/
u32 len_ctrl;
/* 5:0 : req_id_hi
* 31:6 : reserved6 - MBZ
*/
u32 word1;
/* 7:0 : l3_hdr_len
* 15:8 : l3_hdr_off
* 21:16 : l4_hdr_len_in_words - counts the L4 header
* length in words. there is an explicit assumption
* that L4 header appears right after L3 header and
* L4 offset is based on l3_hdr_off+l3_hdr_len
* 31:22 : mss_lo
*/
u32 word2;
u32 reserved;
};
struct ena_eth_io_tx_cdesc {
/* Request ID[15:0] */
u16 req_id;
u8 status;
/* flags
* 0 : phase
* 7:1 : reserved1
*/
u8 flags;
u16 sub_qid;
u16 sq_head_idx;
};
struct ena_eth_io_rx_desc {
/* In bytes. 0 means 64KB */
u16 length;
/* MBZ */
u8 reserved2;
/* 0 : phase
* 1 : reserved1 - MBZ
* 2 : first - Indicates first descriptor in
* transaction
* 3 : last - Indicates last descriptor in transaction
* 4 : comp_req
* 5 : reserved5 - MBO
* 7:6 : reserved6 - MBZ
*/
u8 ctrl;
u16 req_id;
/* MBZ */
u16 reserved6;
u32 buff_addr_lo;
u16 buff_addr_hi;
/* MBZ */
u16 reserved16_w3;
};
/* 4-word format Note: all ethernet parsing information are valid only when
* last=1
*/
struct ena_eth_io_rx_cdesc_base {
/* 4:0 : l3_proto_idx
* 6:5 : src_vlan_cnt
* 7 : reserved7 - MBZ
* 12:8 : l4_proto_idx
* 13 : l3_csum_err - when set, either the L3
* checksum error detected, or, the controller didn't
* validate the checksum. This bit is valid only when
* l3_proto_idx indicates IPv4 packet
* 14 : l4_csum_err - when set, either the L4
* checksum error detected, or, the controller didn't
* validate the checksum. This bit is valid only when
* l4_proto_idx indicates TCP/UDP packet, and,
* ipv4_frag is not set. This bit is valid only when
* l4_csum_checked below is set.
* 15 : ipv4_frag - Indicates IPv4 fragmented packet
* 16 : l4_csum_checked - L4 checksum was verified
* (could be OK or error), when cleared the status of
* checksum is unknown
* 23:17 : reserved17 - MBZ
* 24 : phase
* 25 : l3_csum2 - second checksum engine result
* 26 : first - Indicates first descriptor in
* transaction
* 27 : last - Indicates last descriptor in
* transaction
* 29:28 : reserved28
* 30 : buffer - 0: Metadata descriptor. 1: Buffer
* Descriptor was used
* 31 : reserved31
*/
u32 status;
u16 length;
u16 req_id;
/* 32-bit hash result */
u32 hash;
u16 sub_qid;
u8 offset;
u8 reserved;
};
/* 8-word format */
struct ena_eth_io_rx_cdesc_ext {
struct ena_eth_io_rx_cdesc_base base;
u32 buff_addr_lo;
u16 buff_addr_hi;
u16 reserved16;
u32 reserved_w6;
u32 reserved_w7;
};
struct ena_eth_io_intr_reg {
/* 14:0 : rx_intr_delay
* 29:15 : tx_intr_delay
* 30 : intr_unmask
* 31 : reserved
*/
u32 intr_control;
};
struct ena_eth_io_numa_node_cfg_reg {
/* 7:0 : numa
* 30:8 : reserved
* 31 : enabled
*/
u32 numa_cfg;
};
/* tx_desc */
#define ENA_ETH_IO_TX_DESC_LENGTH_MASK GENMASK(15, 0)
#define ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT 16
#define ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK GENMASK(21, 16)
#define ENA_ETH_IO_TX_DESC_META_DESC_SHIFT 23
#define ENA_ETH_IO_TX_DESC_META_DESC_MASK BIT(23)
#define ENA_ETH_IO_TX_DESC_PHASE_SHIFT 24
#define ENA_ETH_IO_TX_DESC_PHASE_MASK BIT(24)
#define ENA_ETH_IO_TX_DESC_FIRST_SHIFT 26
#define ENA_ETH_IO_TX_DESC_FIRST_MASK BIT(26)
#define ENA_ETH_IO_TX_DESC_LAST_SHIFT 27
#define ENA_ETH_IO_TX_DESC_LAST_MASK BIT(27)
#define ENA_ETH_IO_TX_DESC_COMP_REQ_SHIFT 28
#define ENA_ETH_IO_TX_DESC_COMP_REQ_MASK BIT(28)
#define ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK GENMASK(3, 0)
#define ENA_ETH_IO_TX_DESC_DF_SHIFT 4
#define ENA_ETH_IO_TX_DESC_DF_MASK BIT(4)
#define ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT 7
#define ENA_ETH_IO_TX_DESC_TSO_EN_MASK BIT(7)
#define ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT 8
#define ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK GENMASK(12, 8)
#define ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT 13
#define ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK BIT(13)
#define ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT 14
#define ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK BIT(14)
#define ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_SHIFT 15
#define ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_MASK BIT(15)
#define ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT 17
#define ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK BIT(17)
#define ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT 22
#define ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK GENMASK(31, 22)
#define ENA_ETH_IO_TX_DESC_ADDR_HI_MASK GENMASK(15, 0)
#define ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT 24
#define ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK GENMASK(31, 24)
/* tx_meta_desc */
#define ENA_ETH_IO_TX_META_DESC_REQ_ID_LO_MASK GENMASK(9, 0)
#define ENA_ETH_IO_TX_META_DESC_EXT_VALID_SHIFT 14
#define ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK BIT(14)
#define ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT 16
#define ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK GENMASK(19, 16)
#define ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_SHIFT 20
#define ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK BIT(20)
#define ENA_ETH_IO_TX_META_DESC_META_STORE_SHIFT 21
#define ENA_ETH_IO_TX_META_DESC_META_STORE_MASK BIT(21)
#define ENA_ETH_IO_TX_META_DESC_META_DESC_SHIFT 23
#define ENA_ETH_IO_TX_META_DESC_META_DESC_MASK BIT(23)
#define ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT 24
#define ENA_ETH_IO_TX_META_DESC_PHASE_MASK BIT(24)
#define ENA_ETH_IO_TX_META_DESC_FIRST_SHIFT 26
#define ENA_ETH_IO_TX_META_DESC_FIRST_MASK BIT(26)
#define ENA_ETH_IO_TX_META_DESC_LAST_SHIFT 27
#define ENA_ETH_IO_TX_META_DESC_LAST_MASK BIT(27)
#define ENA_ETH_IO_TX_META_DESC_COMP_REQ_SHIFT 28
#define ENA_ETH_IO_TX_META_DESC_COMP_REQ_MASK BIT(28)
#define ENA_ETH_IO_TX_META_DESC_REQ_ID_HI_MASK GENMASK(5, 0)
#define ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK GENMASK(7, 0)
#define ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT 8
#define ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK GENMASK(15, 8)
#define ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT 16
#define ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK GENMASK(21, 16)
#define ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT 22
#define ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK GENMASK(31, 22)
/* tx_cdesc */
#define ENA_ETH_IO_TX_CDESC_PHASE_MASK BIT(0)
/* rx_desc */
#define ENA_ETH_IO_RX_DESC_PHASE_MASK BIT(0)
#define ENA_ETH_IO_RX_DESC_FIRST_SHIFT 2
#define ENA_ETH_IO_RX_DESC_FIRST_MASK BIT(2)
#define ENA_ETH_IO_RX_DESC_LAST_SHIFT 3
#define ENA_ETH_IO_RX_DESC_LAST_MASK BIT(3)
#define ENA_ETH_IO_RX_DESC_COMP_REQ_SHIFT 4
#define ENA_ETH_IO_RX_DESC_COMP_REQ_MASK BIT(4)
/* rx_cdesc_base */
#define ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK GENMASK(4, 0)
#define ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_SHIFT 5
#define ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_MASK GENMASK(6, 5)
#define ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT 8
#define ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK GENMASK(12, 8)
#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT 13
#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK BIT(13)
#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT 14
#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK BIT(14)
#define ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT 15
#define ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK BIT(15)
#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_CHECKED_SHIFT 16
#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_CHECKED_MASK BIT(16)
#define ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT 24
#define ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK BIT(24)
#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_SHIFT 25
#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_MASK BIT(25)
#define ENA_ETH_IO_RX_CDESC_BASE_FIRST_SHIFT 26
#define ENA_ETH_IO_RX_CDESC_BASE_FIRST_MASK BIT(26)
#define ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT 27
#define ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK BIT(27)
#define ENA_ETH_IO_RX_CDESC_BASE_BUFFER_SHIFT 30
#define ENA_ETH_IO_RX_CDESC_BASE_BUFFER_MASK BIT(30)
/* intr_reg */
#define ENA_ETH_IO_INTR_REG_RX_INTR_DELAY_MASK GENMASK(14, 0)
#define ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_SHIFT 15
#define ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_MASK GENMASK(29, 15)
#define ENA_ETH_IO_INTR_REG_INTR_UNMASK_SHIFT 30
#define ENA_ETH_IO_INTR_REG_INTR_UNMASK_MASK BIT(30)
/* numa_node_cfg_reg */
#define ENA_ETH_IO_NUMA_NODE_CFG_REG_NUMA_MASK GENMASK(7, 0)
#define ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_SHIFT 31
#define ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_MASK BIT(31)
#endif /* _ENA_ETH_IO_H_ */
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