From eab84318c2811e3f38c080efcc7f709f51bb8370 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 20 Dec 2016 15:31:02 +0000 Subject: [PATCH] irqchip/gic-v4: Add VPE command interface Add the required interfaces to schedule a VPE and perform a VINVALL command. Reviewed-by: Thomas Gleixner Reviewed-by: Eric Auger Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v4.c | 25 +++++++++++++++++++++++++ include/linux/irqchip/arm-gic-v4.h | 2 ++ 2 files changed, 27 insertions(+) diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c index 3d4bedea4e78..d3f8b7a13d2c 100644 --- a/drivers/irqchip/irq-gic-v4.c +++ b/drivers/irqchip/irq-gic-v4.c @@ -72,3 +72,28 @@ void its_free_vcpu_irqs(struct its_vm *vm) irq_domain_remove(vm->domain); irq_domain_free_fwnode(vm->fwnode); } + +static int its_send_vpe_cmd(struct its_vpe *vpe, struct its_cmd_info *info) +{ + return irq_set_vcpu_affinity(vpe->irq, info); +} + +int its_schedule_vpe(struct its_vpe *vpe, bool on) +{ + struct its_cmd_info info; + + WARN_ON(preemptible()); + + info.cmd_type = on ? SCHEDULE_VPE : DESCHEDULE_VPE; + + return its_send_vpe_cmd(vpe, &info); +} + +int its_invall_vpe(struct its_vpe *vpe) +{ + struct its_cmd_info info = { + .cmd_type = INVALL_VPE, + }; + + return its_send_vpe_cmd(vpe, &info); +} diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index 3dc811dc53da..6450f3ed101f 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -93,5 +93,7 @@ struct its_cmd_info { 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); #endif -- 2.30.2