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net/nebula-matrix: add core driver architecture and HW layer initialization

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Add the fundamental driver architecture framework and Leonis hardware
layer initialization for NBL NIC family.

- nbl_adapter/nbl_core/nbl_common_info core device context
- PCI probe/remove entry and basic device capability parsing
- Leonis hardware BAR resource request and ioremap logic

This patch establishes the lowest HW layer and core infrastructure,
preparing for subsequent device implementations.

Note:
This commit binds the PCI device during probe, but does not create or
register netdev. Netdev support will be added in later patches of this
series. This intermediate state is safe: hardware BARs are mapped. Chip
configuration and the mailbox control path are brought up by this series,
and Ethernet data path RX/TX queues plus data-plane interrupts remain
unconfigured and disabled at this stage.

Signed-off-by: illusion wang <illusion.wang@nebula-matrix.com>
Link: https://patch.msgid.link/20260914123429.56596-3-illusion.wang@nebula-matrix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
illusion wang 2026-09-14 20:34:16 +08:00 • committed by Jakub Kicinski
commit 825e6d2301
9 changed files with 369 additions and 2 deletions
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