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irqchip/gic-v4: Add VLPI configuration interface 

Add the required interfaces to map, unmap and update a VLPI.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2016-12-21 21:50:32 +00:00
parent eab84318c2
commit f2eac75de4
2 changed files with 46 additions and 0 deletions
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42
drivers/irqchip/irq-gic-v4.c
View File

@ -97,3 +97,45 @@ int its_invall_vpe(struct its_vpe *vpe)
return its_send_vpe_cmd(vpe, &info);
}
int its_map_vlpi(int irq, struct its_vlpi_map *map)
{
struct its_cmd_info info = {
.cmd_type = MAP_VLPI,
.map = map,
};
/*
* The host will never see that interrupt firing again, so it
* is vital that we don't do any lazy masking.
*/
irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
return irq_set_vcpu_affinity(irq, &info);
}
int its_get_vlpi(int irq, struct its_vlpi_map *map)
{
struct its_cmd_info info = {
.cmd_type = GET_VLPI,
.map = map,
};
return irq_set_vcpu_affinity(irq, &info);
}
int its_unmap_vlpi(int irq)
{
irq_clear_status_flags(irq, IRQ_DISABLE_UNLAZY);
return irq_set_vcpu_affinity(irq, NULL);
}
int its_prop_update_vlpi(int irq, u8 config, bool inv)
{
struct its_cmd_info info = {
.cmd_type = inv ? PROP_UPDATE_AND_INV_VLPI : PROP_UPDATE_VLPI,
.config = config,
};
return irq_set_vcpu_affinity(irq, &info);
}

4
include/linux/irqchip/arm-gic-v4.h
View File

@ -95,5 +95,9 @@ int its_alloc_vcpu_irqs(struct its_vm *vm);
void its_free_vcpu_irqs(struct its_vm *vm);
int its_schedule_vpe(struct its_vpe *vpe, bool on);
int its_invall_vpe(struct its_vpe *vpe);
int its_map_vlpi(int irq, struct its_vlpi_map *map);
int its_get_vlpi(int irq, struct its_vlpi_map *map);
int its_unmap_vlpi(int irq);
int its_prop_update_vlpi(int irq, u8 config, bool inv);
#endif