diff options
-rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 79 |
1 files changed, 75 insertions, 4 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 6a18b01edbc4..61b885133316 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -721,6 +721,42 @@ static struct its_vpe *its_build_vinv_cmd(struct its_node *its, return valid_vpe(its, map->vpe); } +static struct its_vpe *its_build_vint_cmd(struct its_node *its, + struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + struct its_vlpi_map *map; + + map = dev_event_to_vlpi_map(desc->its_int_cmd.dev, + desc->its_int_cmd.event_id); + + its_encode_cmd(cmd, GITS_CMD_INT); + its_encode_devid(cmd, desc->its_int_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_int_cmd.event_id); + + its_fixup_cmd(cmd); + + return valid_vpe(its, map->vpe); +} + +static struct its_vpe *its_build_vclear_cmd(struct its_node *its, + struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + struct its_vlpi_map *map; + + map = dev_event_to_vlpi_map(desc->its_clear_cmd.dev, + desc->its_clear_cmd.event_id); + + its_encode_cmd(cmd, GITS_CMD_CLEAR); + its_encode_devid(cmd, desc->its_clear_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_clear_cmd.event_id); + + its_fixup_cmd(cmd); + + return valid_vpe(its, map->vpe); +} + static u64 its_cmd_ptr_to_offset(struct its_node *its, struct its_cmd_block *ptr) { @@ -1101,6 +1137,34 @@ static void its_send_vinv(struct its_device *dev, u32 event_id) its_send_single_vcommand(dev->its, its_build_vinv_cmd, &desc); } +static void its_send_vint(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + /* + * There is no real VINT command. This is just a normal INT, + * with a VSYNC instead of a SYNC. + */ + desc.its_int_cmd.dev = dev; + desc.its_int_cmd.event_id = event_id; + + its_send_single_vcommand(dev->its, its_build_vint_cmd, &desc); +} + +static void its_send_vclear(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + /* + * There is no real VCLEAR command. This is just a normal CLEAR, + * with a VSYNC instead of a SYNC. + */ + desc.its_clear_cmd.dev = dev; + desc.its_clear_cmd.event_id = event_id; + + its_send_single_vcommand(dev->its, its_build_vclear_cmd, &desc); +} + /* * irqchip functions - assumes MSI, mostly. */ @@ -1294,10 +1358,17 @@ static int its_irq_set_irqchip_state(struct irq_data *d, if (which != IRQCHIP_STATE_PENDING) return -EINVAL; - if (state) - its_send_int(its_dev, event); - else - its_send_clear(its_dev, event); + if (irqd_is_forwarded_to_vcpu(d)) { + if (state) + its_send_vint(its_dev, event); + else + its_send_vclear(its_dev, event); + } else { + if (state) + its_send_int(its_dev, event); + else + its_send_clear(its_dev, event); + } return 0; } |