[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC PATCH 14/24] ARM: vITS: handle INT command
The INT command sets a given LPI identified by a DeviceID/EventID pair as pending and thus triggers it to be injected. Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> --- xen/arch/arm/vgic-its.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/xen/arch/arm/vgic-its.c b/xen/arch/arm/vgic-its.c index 99d9e9c..7072753 100644 --- a/xen/arch/arm/vgic-its.c +++ b/xen/arch/arm/vgic-its.c @@ -192,6 +192,37 @@ static int its_handle_clear(struct virt_its *its, uint64_t *cmdptr) return 0; } +static int its_handle_int(struct virt_its *its, uint64_t *cmdptr) +{ + uint32_t devid = its_cmd_get_deviceid(cmdptr); + uint32_t eventid = its_cmd_get_id(cmdptr); + struct vits_itte *itte; + struct vcpu *vcpu; + int ret = -1; + uint32_t vlpi; + + spin_lock(&its->its_lock); + + itte = get_devid_evid(its, devid, eventid); + if ( !itte ) + goto out_unlock; + + vcpu = its->d->vcpu[itte->collection]; + vlpi = itte->vlpi; + + ret = 0; + + put_devid_evid(its, itte); + +out_unlock: + spin_unlock(&its->its_lock); + + if ( !ret) + vgic_vcpu_inject_irq(vcpu, vlpi); + + return ret; +} + #define ITS_CMD_BUFFER_SIZE(baser) ((((baser) & 0xff) + 1) << 12) static int vgic_its_handle_cmds(struct domain *d, struct virt_its *its, @@ -215,6 +246,9 @@ static int vgic_its_handle_cmds(struct domain *d, struct virt_its *its, case GITS_CMD_CLEAR: its_handle_clear(its, cmdptr); break; + case GITS_CMD_INT: + its_handle_int(its, cmdptr); + break; case GITS_CMD_SYNC: /* We handle ITS commands synchronously, so we ignore SYNC. */ break; -- 2.9.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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