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Commit f2eac75d authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v4: Add VLPI configuration interface 



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

Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent eab84318

drivers/irqchip/irq-gic-v4.c

+42 −0
Original line number Diff line number Diff line
@@ -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);

}

include/linux/irqchip/arm-gic-v4.h

+4 −0
Original line number Diff line number Diff line
@@ -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