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hw/intc/arm_gicv3: Implement GICv4's new redistributor frame

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The GICv4 extends the redistributor register map -- where GICv3
had two 64KB frames per CPU, GICv4 has four frames. Add support
for the extra frame by using a new gicv3_redist_size() function
in the places in the GIC implementation which currently use
a fixed constant size for the redistributor register block.
(Until we implement the extra registers they will RAZ/WI.)

Any board that wants to use a GICv4 will need to also adjust
to handle the different sized redistributor register block;
that will be done separately.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220408141550.1271295-23-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-04-08 15:15:31 +01:00
parent c6dd2f9950
commit ae3b3ba15c
4 changed files with 31 additions and 5 deletions
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5
include/hw/intc/arm_gicv3_common.h
View file

@ -38,7 +38,12 @@
#define GICV3_LPI_INTID_START 8192
/*
* The redistributor in GICv3 has two 64KB frames per CPU; in
* GICv4 it has four 64KB frames per CPU.
*/
#define GICV3_REDIST_SIZE 0x20000
#define GICV4_REDIST_SIZE 0x40000
/* Number of SGI target-list bits */
#define GICV3_TARGETLIST_BITS 16