| 1 | /* |
| 2 | * BlockBackend RAM Registrar |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | |
| 7 | #ifndef BLOCK_RAM_REGISTRAR_H |
| 8 | #define BLOCK_RAM_REGISTRAR_H |
| 9 | |
| 10 | #include "system/ramlist.h" |
| 11 | |
| 12 | /** |
| 13 | * struct BlockRAMRegistrar: |
| 14 | * |
| 15 | * Keeps RAMBlock memory registered with a BlockBackend using |
| 16 | * blk_register_buf() including hotplugged memory. |
| 17 | * |
| 18 | * Emulated devices or other BlockBackend users initialize a BlockRAMRegistrar |
| 19 | * with blk_ram_registrar_init() before submitting I/O requests with the |
| 20 | * BDRV_REQ_REGISTERED_BUF flag set. |
| 21 | */ |
| 22 | typedef struct { |
| 23 | BlockBackend *blk; |
| 24 | RAMBlockNotifier notifier; |
| 25 | bool ok; |
| 26 | } BlockRAMRegistrar; |
| 27 | |
| 28 | void blk_ram_registrar_init(BlockRAMRegistrar *r, BlockBackend *blk); |
| 29 | void blk_ram_registrar_destroy(BlockRAMRegistrar *r); |
| 30 | |
| 31 | /* Have all RAMBlocks been registered successfully? */ |
| 32 | static inline bool blk_ram_registrar_ok(BlockRAMRegistrar *r) |
| 33 | { |
| 34 | return r->ok; |
| 35 | } |
| 36 | |
| 37 | #endif /* BLOCK_RAM_REGISTRAR_H */ |