mirror of https://github.com/F-Stack/f-stack.git
132 lines
3.6 KiB
C
132 lines
3.6 KiB
C
/*
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* BSD LICENSE
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*
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* Copyright(c) 2017 Cavium, Inc.. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Cavium, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LIO_MBOX_H_
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#define _LIO_MBOX_H_
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#include <stdint.h>
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#include <rte_spinlock.h>
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/* Macros for Mail Box Communication */
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#define LIO_MBOX_DATA_MAX 32
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#define LIO_VF_ACTIVE 0x1
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#define LIO_VF_FLR_REQUEST 0x2
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#define LIO_CORES_CRASHED 0x3
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/* Macro for Read acknowledgment */
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#define LIO_PFVFACK 0xffffffffffffffff
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#define LIO_PFVFSIG 0x1122334455667788
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#define LIO_PFVFERR 0xDEADDEADDEADDEAD
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enum lio_mbox_cmd_status {
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LIO_MBOX_STATUS_SUCCESS = 0,
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LIO_MBOX_STATUS_FAILED = 1,
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LIO_MBOX_STATUS_BUSY = 2
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};
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enum lio_mbox_message_type {
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LIO_MBOX_REQUEST = 0,
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LIO_MBOX_RESPONSE = 1
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};
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union lio_mbox_message {
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uint64_t mbox_msg64;
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struct {
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uint16_t type : 1;
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uint16_t resp_needed : 1;
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uint16_t cmd : 6;
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uint16_t len : 8;
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uint8_t params[6];
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} s;
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};
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typedef void (*lio_mbox_callback)(void *, void *, void *);
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struct lio_mbox_cmd {
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union lio_mbox_message msg;
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uint64_t data[LIO_MBOX_DATA_MAX];
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uint32_t q_no;
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uint32_t recv_len;
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uint32_t recv_status;
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lio_mbox_callback fn;
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void *fn_arg;
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};
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enum lio_mbox_state {
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LIO_MBOX_STATE_IDLE = 1,
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LIO_MBOX_STATE_REQ_RECEIVING = 2,
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LIO_MBOX_STATE_REQ_RECEIVED = 4,
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LIO_MBOX_STATE_RES_PENDING = 8,
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LIO_MBOX_STATE_RES_RECEIVING = 16,
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LIO_MBOX_STATE_RES_RECEIVED = 16,
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LIO_MBOX_STATE_ERROR = 32
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};
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struct lio_mbox {
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/* A spinlock to protect access to this q_mbox. */
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rte_spinlock_t lock;
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struct lio_device *lio_dev;
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uint32_t q_no;
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enum lio_mbox_state state;
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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,
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* 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,
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* 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 lio_mbox_cmd mbox_req;
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struct lio_mbox_cmd mbox_resp;
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};
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int lio_mbox_read(struct lio_mbox *mbox);
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int lio_mbox_write(struct lio_device *lio_dev,
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struct lio_mbox_cmd *mbox_cmd);
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int lio_mbox_process_message(struct lio_mbox *mbox);
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#endif /* _LIO_MBOX_H_ */
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