vfdi.h

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/****************************************************************************
 * Driver for Solarflare Solarstorm network controllers and boards
 * Copyright 2010-2012 Solarflare Communications Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation, incorporated herein by reference.
 */
#ifndef _VFDI_H
#define _VFDI_H

#define VFDI_EV_SEQ_LBN 24
#define VFDI_EV_SEQ_WIDTH 8
#define VFDI_EV_TYPE_LBN 16
#define VFDI_EV_TYPE_WIDTH 8
#define VFDI_EV_TYPE_REQ_WORD0 0
#define VFDI_EV_TYPE_REQ_WORD1 1
#define VFDI_EV_TYPE_REQ_WORD2 2
#define VFDI_EV_TYPE_REQ_WORD3 3
#define VFDI_EV_TYPE_STATUS 4
#define VFDI_EV_TYPE_RESET 5
#define VFDI_EV_DATA_LBN 0
#define VFDI_EV_DATA_WIDTH 16

struct vfdi_endpoint {
    u8 mac_addr[ETH_ALEN];
    __be16 tci;
};

enum vfdi_op {
    VFDI_OP_RESPONSE = 0,
    VFDI_OP_INIT_EVQ = 1,
    VFDI_OP_INIT_RXQ = 2,
    VFDI_OP_INIT_TXQ = 3,
    VFDI_OP_FINI_ALL_QUEUES = 4,
    VFDI_OP_INSERT_FILTER = 5,
    VFDI_OP_REMOVE_ALL_FILTERS = 6,
    VFDI_OP_SET_STATUS_PAGE = 7,
    VFDI_OP_CLEAR_STATUS_PAGE = 8,
    VFDI_OP_LIMIT,
};

/* Response codes for VFDI operations. Other values may be used in future. */
#define VFDI_RC_SUCCESS     0
#define VFDI_RC_ENOMEM      (-12)
#define VFDI_RC_EINVAL      (-22)
#define VFDI_RC_EOPNOTSUPP  (-95)
#define VFDI_RC_ETIMEDOUT   (-110)

struct vfdi_req {
    u32 op;
    u32 reserved1;
    s32 rc;
    u32 reserved2;
    union {
        struct {
            u32 index;
            u32 buf_count;
            u64 addr[];
        } init_evq;
        struct {
            u32 index;
            u32 buf_count;
            u32 evq;
            u32 label;
            u32 flags;
#define VFDI_RXQ_FLAG_SCATTER_EN 1
            u32 reserved;
            u64 addr[];
        } init_rxq;
        struct {
            u32 index;
            u32 buf_count;
            u32 evq;
            u32 label;
            u32 flags;
#define VFDI_TXQ_FLAG_IP_CSUM_DIS 1
#define VFDI_TXQ_FLAG_TCPUDP_CSUM_DIS 2
            u32 reserved;
            u64 addr[];
        } init_txq;
        struct {
            u32 rxq;
            u32 flags;
#define VFDI_MAC_FILTER_FLAG_RSS 1
#define VFDI_MAC_FILTER_FLAG_SCATTER 2
        } mac_filter;
        struct {
            u64 dma_addr;
            u64 peer_page_count;
            u64 peer_page_addr[];
        } set_status_page;
    } u;
};

struct vfdi_status {
    u32 generation_start;
    u32 generation_end;
    u32 version;
    u32 length;
    u8 vi_scale;
    u8 max_tx_channels;
    u8 rss_rxq_count;
    u8 reserved1;
    u16 peer_count;
    u16 reserved2;
    struct vfdi_endpoint local;
    struct vfdi_endpoint peers[256];

    /* Members below here extend version 1 of this structure */
    u32 timer_quantum_ns;
};

#endif