43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _PAPR_HVPIPE_H
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#define _PAPR_HVPIPE_H
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#define HVPIPE_HMC_ID_MASK 0x02000000 /*02-HMC,00-reserved and HMC ID */
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#define HVPIPE_MAX_WRITE_BUFFER_SIZE 4048
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/*
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* hvpipe specific RTAS return values
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*/
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#define RTAS_HVPIPE_CLOSED -4
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#define HVPIPE_HDR_LEN sizeof(struct papr_hvpipe_hdr)
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enum hvpipe_migrate_action {
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HVPIPE_SUSPEND,
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HVPIPE_RESUME,
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};
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struct hvpipe_source_info {
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struct list_head list; /* list of sources */
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u32 srcID;
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u32 hvpipe_status;
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wait_queue_head_t recv_wqh; /* wake up poll() waitq */
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struct task_struct *tsk;
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};
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/*
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* Source ID Format 0xCCRRQQQQ
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* CC = indicating value is source type (ex: 0x02 for HMC)
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* RR = 0x00 (reserved)
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* QQQQ = 0x0000 – 0xFFFF indicating the source index indetifier
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*/
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struct hvpipe_event_buf {
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__be32 srcID; /* Source ID */
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u8 event_type; /* 0x01 for hvpipe message available */
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/* from specified src ID */
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/* 0x02 for loss of pipe connection */
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/* with specified src ID */
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};
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void hvpipe_migration_handler(int action);
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#endif /* _PAPR_HVPIPE_H */
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