irqchip/bcm2836: Configure mailbox interrupts as standard interrupts

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In order to switch the bcm2836 driver to privide standard interrupts
for IPIs, it first needs to stop lying about the way things work.

The mailbox interrupt is actually a multiplexer, with enough
bits to store 32 pending interrupts per CPU. So let's turn it
into a chained irqchip.

Once this is done, we can instanciate the corresponding IPIs,
and pass them to the architecture code.

Signed-off-by: Marc Zyngier <maz@kernel.org>

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This commit is contained in:

Marc Zyngier 2020-05-05 12:59:04 +01:00

parent 3567c6ca47

commit 0809ae7249

1 changed files with 125 additions and 26 deletions

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drivers/irqchip/irq-bcm2836.c

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