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Release 4.11 drivers/net/ethernet/cavium/liquidio/octeon_mailbox.h

/**********************************************************************
 * 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

/*Macro for Read acknowldgement*/

#define OCTEON_PFVFACK			0xffffffffffffffff

#define OCTEON_PFVFSIG			0x1122334455667788

#define OCTEON_PFVFERR			0xDEADDEADDEADDEAD


#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;
};


typedef void (*octeon_mbox_callback_t)(void *, void *, 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 = 16,
	
OCTEON_MBOX_STATE_ERROR = 32
};


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;

};

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);

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Raghu Vatsavayi27399.64%150.00%
Prasad Kanneganti10.36%150.00%
Total274100.00%2100.00%
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