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