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scsi: qla2xxx: Add 29xx support in queue initialisation path

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Extend the queue initialisation and multi-queue management mailbox
commands to include IS_QLA29XX() checks, following the same mailbox
interface as 27xx/28xx.

Unlike earlier adapters that use 64-byte request/response ring entries
(request_t / response_t), 29xx uses 128-byte entries.  Add struct
request_ext and struct response_ext, which extend the legacy 64-byte
layout with a 64-byte reserved area.  The first 64 bytes are
layout-compatible with the legacy structures, so common header accesses
remain valid.

The enlarged entry stride doubles the DMA ring memory allocated for both
request and response queues on 29xx, and all ring pointer arithmetic
must account for the wider entries (handled by later patches in this
series).

Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260723050413.3897522-5-njavali@marvell.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
This commit is contained in:
Manish Rangankar 2026-07-23 10:33:21 +05:30 • committed by Martin K. Petersen (Oracle)
commit c8944d20a3
3 changed files with 64 additions and 11 deletions
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