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/*
* BSD LICENSE
*
* Copyright(c) 2017 Cavium, Inc.. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Cavium, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LIO_MBOX_H_
#define _LIO_MBOX_H_
#include <stdint.h>
#include <rte_spinlock.h>
/* Macros for Mail Box Communication */
#define LIO_MBOX_DATA_MAX 32
#define LIO_VF_ACTIVE 0x1
#define LIO_CORES_CRASHED 0x3
/* Macro for Read acknowledgment */
#define LIO_PFVFACK 0xffffffffffffffff
#define LIO_PFVFSIG 0x1122334455667788
#define LIO_PFVFERR 0xDEADDEADDEADDEAD
enum lio_mbox_cmd_status {
LIO_MBOX_STATUS_SUCCESS = 0,
LIO_MBOX_STATUS_FAILED = 1,
LIO_MBOX_STATUS_BUSY = 2
};
enum lio_mbox_message_type {
LIO_MBOX_REQUEST = 0,
LIO_MBOX_RESPONSE = 1
};
union lio_mbox_message {
uint64_t mbox_msg64;
struct {
uint16_t type : 1;
uint16_t resp_needed : 1;
uint16_t cmd : 6;
uint16_t len : 8;
uint8_t params[6];
} s;
};
typedef void (*lio_mbox_callback)(void *, void *, void *);
struct lio_mbox_cmd {
union lio_mbox_message msg;
uint64_t data[LIO_MBOX_DATA_MAX];
uint32_t q_no;
uint32_t recv_len;
uint32_t recv_status;
lio_mbox_callback fn;
void *fn_arg;
};
enum lio_mbox_state {
LIO_MBOX_STATE_IDLE = 1,
LIO_MBOX_STATE_REQ_RECEIVING = 2,
LIO_MBOX_STATE_REQ_RECEIVED = 4,
LIO_MBOX_STATE_RES_PENDING = 8,
LIO_MBOX_STATE_RES_RECEIVING = 16,
LIO_MBOX_STATE_RES_RECEIVED = 16,
LIO_MBOX_STATE_ERROR = 32
};
struct lio_mbox {
/* A spinlock to protect access to this q_mbox. */
rte_spinlock_t lock;
struct lio_device *lio_dev;
uint32_t q_no;
enum lio_mbox_state state;
/* 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 lio_mbox_cmd mbox_req;
struct lio_mbox_cmd mbox_resp;
};
int lio_mbox_read(struct lio_mbox *mbox);
int lio_mbox_write(struct lio_device *lio_dev,
struct lio_mbox_cmd *mbox_cmd);
int lio_mbox_process_message(struct lio_mbox *mbox);
#endif /* _LIO_MBOX_H_ */
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