diff options
| author | Ian Moffett <ian@osmora.org> | 2025-05-09 20:35:07 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-05-09 20:37:35 -0400 |
| commit | 4c47d7b7656c64e35673a45c1bfe8a6a002174cc (patch) | |
| tree | e0216cef998c7d79cc1c782d81e5b7214cc05c74 /sys/include/dev | |
| parent | 249d1e0449d3beb097525d847b23461dc818e50a (diff) | |
kernel: ahci: Add command table + PRD definition
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/dev')
| -rw-r--r-- | sys/include/dev/ic/ahcivar.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sys/include/dev/ic/ahcivar.h b/sys/include/dev/ic/ahcivar.h index 98fdf81..4b6cf12 100644 --- a/sys/include/dev/ic/ahcivar.h +++ b/sys/include/dev/ic/ahcivar.h @@ -107,6 +107,38 @@ struct ahci_cmd_hdr { }; /* + * Physical region descriptor + * + * @dba: Data base address + * @rsvd0: Reserved + * @dbc: Count + * @rsvd1: Reserved + * @i: Interrupt on completion + */ +struct ahci_prdt_entry { + uintptr_t dba; + uint32_t rsvd0; + uint32_t dbc : 22; + uint16_t rsvd1 : 9; + uint8_t i : 1; +}; + +/* + * Command table + * + * @cfis: Command FIS + * @acmd: ATAPI command + * @rsvd: Reserved + * @prdt: Physical region descriptors + */ +struct ahci_cmdtab { + uint8_t cfis[64]; + uint8_t acmd[16]; + uint8_t rsvd[48]; + struct ahci_prdt_entry prdt[1]; +}; + +/* * Host to device FIS * * [h]: Set by host |