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Re: [PATCH v2 0/3] Decouple INTx-to-LNKx routing from south bridges

From: Philippe Mathieu-Daudé
Subject: Re: [PATCH v2 0/3] Decouple INTx-to-LNKx routing from south bridges
Date: Fri, 9 Dec 2022 16:23:59 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.5.1

On 20/11/22 16:05, Bernhard Beschow wrote:

During my PIIX consolidation work [1] I've noticed that both PIIX models have
quite different pci_slot_get_pirq() implementations. These functions seem to
map PCI INTx pins to input pins of a programmable interrupt router which is
AFAIU board-specific. IOW, board-specific assumptions are baked into the device
models which prevent e.g. the whole PIIX4 south bridge to be reusable in the PC

This series first factors out pci_bus_map_irqs() from pci_bus_irqs() which
then allowes for moving the two board-specific PIIX pci_slot_get_pirq()
funtions into their respective boards. With these changes, the PIIX4 south
bridge could eventually become an alternative to the PIIX3-Frankenstein
solution in the PC machine.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

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