[PATCH v3 0/2] mcb: enable register PCI devices using any BAR

[Filip Jensen <dev-Felipe.Jensen@duagon.com>]

V2 -> V3: Thanks for second review. Fixed declaring pci_dev outside of the
only block where it is needed in patch 1/2.
V1 -> V2: Thanks to the review from Johannes Thumshirn, the patch 2/3 of
the first version has been removed and the cleaner solution from patch 3/3
is then kept.

The PCI mcb driver is currently only able to register devices that use
the first PCI BAR. That is hardcoded in mcb-parse.c in lines 156-161:

                c = kzalloc_obj(struct chameleon_bar);
                if (!c)
                        return -ENOMEM;

                bar_count = 1;
                c->addr = mapbase;

However, mcb devices can use other indexes of the 6 PCI BARs. This serie of
patches allows to use these devices by adding the relevant PCI BAR info to
the chameleon table. As this code must also work for lpc devices, it has
been done a refactoring in order to keep the two buses dependent operations
regarding bars (get_bar and is_io_mapped_bar) outside of the common parsing
code. These callback operations are stored in a structure and passed over
to the parser, thus rendering each module, the mcb-lpc and mcb-pci, only
with their own bus relevant logic.

This patch depends on the previously accepted patch:
Link: https://lore.kernel.org/lkml/20260217075124.10052-1-dev-Felipe.Jensen@duagon.com/

Reviewed-by: Jose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>

Filip Jensen (2):
  mcb: Use more than the first bar in pci devices
  mcb: refactor bus operations out of common code

 drivers/mcb/mcb-internal.h | 10 ++++-
 drivers/mcb/mcb-lpc.c      | 56 ++++++++++++++++++++++++++-
 drivers/mcb/mcb-parse.c    | 77 +++++---------------------------------
 drivers/mcb/mcb-pci.c      | 40 +++++++++++++++++++-
 4 files changed, 111 insertions(+), 72 deletions(-)

-- 
2.34.1