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