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irqchip/gic-v4.1: Add VPE residency callback

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Making a VPE resident on GICv4.1 is pretty simple, as it is just a
single write to the local redistributor. We just need extra information
about which groups to enable, which the KVM code will have to provide.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20191224111055.11836-12-maz@kernel.org
This commit is contained in:
Marc Zyngier 2019-12-24 11:10:34 +00:00
parent d97c97baa2
commit 91bf6395f7
3 changed files with 31 additions and 0 deletions
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9
include/linux/irqchip/arm-gic-v3.h
View file

@ -327,6 +327,15 @@
#define GICR_VPENDBASER_IDAI (1ULL << 62)
#define GICR_VPENDBASER_Valid (1ULL << 63)
/*
* GICv4.1 VPENDBASER, used for VPE residency. On top of these fields,
* also use the above Valid, PendingLast and Dirty.
*/
#define GICR_VPENDBASER_4_1_DB (1ULL << 62)
#define GICR_VPENDBASER_4_1_VGRP0EN (1ULL << 59)
#define GICR_VPENDBASER_4_1_VGRP1EN (1ULL << 58)
#define GICR_VPENDBASER_4_1_VPEID GENMASK_ULL(15, 0)
/*
* ITS registers, offsets from ITS_base
*/

5
include/linux/irqchip/arm-gic-v4.h
View file

@ -100,6 +100,11 @@ struct its_cmd_info {
union {
struct its_vlpi_map *map;
u8 config;
bool req_db;
struct {
bool g0en;
bool g1en;
};
};
};