/**********************************************************************
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* Author: Cavium, Inc.
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*
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* Contact: support@cavium.com
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* Please include "LiquidIO" in the subject.
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*
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* Copyright (c) 2003-2016 Cavium, Inc.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more details.
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***********************************************************************/
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#ifndef __MAILBOX_H__
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#define __MAILBOX_H__
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/* Macros for Mail Box Communication */
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#define OCTEON_MBOX_DATA_MAX 32
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#define OCTEON_VF_ACTIVE 0x1
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#define OCTEON_VF_FLR_REQUEST 0x2
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#define OCTEON_PF_CHANGED_VF_MACADDR 0x4
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#define OCTEON_GET_VF_STATS 0x8
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/*Macro for Read acknowldgement*/
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#define OCTEON_PFVFACK 0xffffffffffffffffULL
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#define OCTEON_PFVFSIG 0x1122334455667788ULL
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#define OCTEON_PFVFERR 0xDEADDEADDEADDEADULL
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#define LIO_MBOX_WRITE_WAIT_CNT 1000
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#define LIO_MBOX_WRITE_WAIT_TIME msecs_to_jiffies(1)
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enum octeon_mbox_cmd_status {
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OCTEON_MBOX_STATUS_SUCCESS = 0,
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OCTEON_MBOX_STATUS_FAILED = 1,
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OCTEON_MBOX_STATUS_BUSY = 2
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};
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enum octeon_mbox_message_type {
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OCTEON_MBOX_REQUEST = 0,
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OCTEON_MBOX_RESPONSE = 1
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};
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union octeon_mbox_message {
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u64 u64;
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struct {
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u16 type : 1;
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u16 resp_needed : 1;
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u16 cmd : 6;
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u16 len : 8;
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u8 params[6];
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} s;
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};
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typedef void (*octeon_mbox_callback_t)(void *, void *, void *);
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struct octeon_mbox_cmd {
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union octeon_mbox_message msg;
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u64 data[OCTEON_MBOX_DATA_MAX];
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u32 q_no;
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u32 recv_len;
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u32 recv_status;
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octeon_mbox_callback_t fn;
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void *fn_arg;
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};
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enum octeon_mbox_state {
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OCTEON_MBOX_STATE_IDLE = 1,
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OCTEON_MBOX_STATE_REQUEST_RECEIVING = 2,
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OCTEON_MBOX_STATE_REQUEST_RECEIVED = 4,
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OCTEON_MBOX_STATE_RESPONSE_PENDING = 8,
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OCTEON_MBOX_STATE_RESPONSE_RECEIVING = 16,
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OCTEON_MBOX_STATE_RESPONSE_RECEIVED = 32,
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OCTEON_MBOX_STATE_ERROR = 64
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};
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struct octeon_mbox {
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/** A spinlock to protect access to this q_mbox. */
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spinlock_t lock;
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struct octeon_device *oct_dev;
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u32 q_no;
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enum octeon_mbox_state state;
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struct cavium_wk mbox_poll_wk;
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/** SLI_MAC_PF_MBOX_INT for PF, SLI_PKT_MBOX_INT for VF. */
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void *mbox_int_reg;
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/** SLI_PKT_PF_VF_MBOX_SIG(0) for PF, SLI_PKT_PF_VF_MBOX_SIG(1) for VF.
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*/
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void *mbox_write_reg;
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/** SLI_PKT_PF_VF_MBOX_SIG(1) for PF, SLI_PKT_PF_VF_MBOX_SIG(0) for VF.
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*/
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void *mbox_read_reg;
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struct octeon_mbox_cmd mbox_req;
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struct octeon_mbox_cmd mbox_resp;
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};
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struct oct_vf_stats_ctx {
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atomic_t status;
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struct oct_vf_stats *stats;
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};
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int octeon_mbox_read(struct octeon_mbox *mbox);
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int octeon_mbox_write(struct octeon_device *oct,
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struct octeon_mbox_cmd *mbox_cmd);
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int octeon_mbox_process_message(struct octeon_mbox *mbox);
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int octeon_mbox_cancel(struct octeon_device *oct, int q_no);
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#endif
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