From f2eac75de435871d5a497f8b557874a2a8a7b264 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 21 Dec 2016 21:50:32 +0000 Subject: [PATCH] irqchip/gic-v4: Add VLPI configuration interface Add the required interfaces to map, unmap and update a VLPI. Reviewed-by: Eric Auger Reviewed-by: Thomas Gleixner Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v4.c | 42 ++++++++++++++++++++++++++++++ include/linux/irqchip/arm-gic-v4.h | 4 +++ 2 files changed, 46 insertions(+) diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c index d3f8b7a13d2c..6d33828a84a7 100644 --- a/drivers/irqchip/irq-gic-v4.c +++ b/drivers/irqchip/irq-gic-v4.c @@ -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); +} diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index 6450f3ed101f..e22f878ad017 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -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 -- 2.20.1