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irqchip/gic-v4.1: Add mask/unmask doorbell callbacks

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masking/unmasking doorbells on GICv4.1 relies on a new INVDB command,
which broadcasts the invalidation to all RDs.

Implement the new command as well as the masking callbacks, and plug
the whole thing into the v4.1 VPE irqchip.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20191224111055.11836-11-maz@kernel.org
This commit is contained in:
Marc Zyngier
2019-12-24 11:10:33 +00:00
parent 29c647f3b5
commit d97c97baa2
2 changed files with 75 additions and 1 deletions
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3
include/linux/irqchip/arm-gic-v3.h
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@@ -484,8 +484,9 @@
#define GITS_CMD_VMAPTI GITS_CMD_GICv4(GITS_CMD_MAPTI)
#define GITS_CMD_VMOVI GITS_CMD_GICv4(GITS_CMD_MOVI)
#define GITS_CMD_VSYNC GITS_CMD_GICv4(GITS_CMD_SYNC)
/* VMOVP is the odd one, as it doesn't have a physical counterpart */
/* VMOVP and INVDB are the odd ones, as they dont have a physical counterpart */
#define GITS_CMD_VMOVP GITS_CMD_GICv4(2)
#define GITS_CMD_INVDB GITS_CMD_GICv4(0xe)
/*
* ITS error numbers