irqchip/gic-v3: Detect GICD_CTRL.DS and SCR_EL3.FIQ earlier

Browse source

In subsequent patches the GICv3 driver will choose the regular interrupt
priority at boot time, dependent on the configuration of GICD_CTRL.DS
and SCR_EL3.FIQ. This will need to be chosen before we configure the
distributor with default prioirities for all the interrupts, which
happens before we currently detect these in gic_cpu_sys_reg_init().

Add a new gic_prio_init() function to detect these earlier and log them
to the console so that any problems can be debugged more easily. This
also allows the uniformity checks in gic_cpu_sys_reg_init() to be
simplified, as we can compare directly with the boot CPU values which
were recorded earlier.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexandru Elisei <alexandru.elisei@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240617111841.2529370-5-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

...

This commit is contained in:

Mark Rutland 2024-06-17 12:18:40 +01:00 • committed by Catalin Marinas

parent a6156e7031

commit d447bf09a4

1 changed files with 63 additions and 54 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

117

drivers/irqchip/irq-gic-v3.c

View file