[PATCH v2 31/52] irqchip/gic-v4: Add VLPI configuration interface
flat view
STALE3377d
REVIEWED: 2 (1M)
From: Marc Zyngier <hidden>
Date: 2017-06-28 15:16:02
Also in:
kvmarm, lkml
Subsystem:
arm generic interrupt controller drivers, irqchip drivers, the rest · Maintainers:
Marc Zyngier, Thomas Gleixner, Linus Torvalds
Revision v2 of 2 in this series; 2 review trailers.
Revisions (2)
- v2 current
- v3 [diff vs current]
Add the required interfaces to map, unmap and update a VLPI. Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Thomas Gleixner <redacted> Signed-off-by: Marc Zyngier <redacted> --- 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 3c5ad70193ed..697d9dc1e005 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c@@ -81,3 +81,45 @@ 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 97bb97a11fef..843c9ff29269 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h@@ -92,5 +92,9 @@ 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
--
2.11.0