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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2013-02-06 10:23:39 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-03-04 10:41:04 +0100 |
| commit | 96b14536d935848cffd904f583f67c66169002d8 (patch) | |
| tree | 87d6be1ed35f1d12f0da33cc88a533bc0fd1afd9 /arch/s390 | |
| parent | s390/airq: add support for irq ranges (diff) | |
| download | linux-96b14536d935848cffd904f583f67c66169002d8.tar.xz linux-96b14536d935848cffd904f583f67c66169002d8.zip | |
virtio-ccw: virtio-ccw adapter interrupt support.
Implement the new CCW_CMD_SET_IND_ADAPTER command and try to enable
adapter interrupts for every device on the first startup. If the host
does not support adapter interrupts, fall back to normal I/O interrupts.
virtio-ccw adapter interrupts use the same isc as normal I/O subchannels
and share a summary indicator for all devices sharing the same indicator
area.
Indicator bits for the individual virtqueues may be contained in the same
indicator area for different devices.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/irq.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/irq.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index 5f8bcc5fe423..35f0faab5361 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -53,6 +53,7 @@ enum interruption_class { IRQIO_PCI, IRQIO_MSI, IRQIO_VIR, + IRQIO_VAI, NMI_NMI, CPU_RST, NR_ARCH_IRQS diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index bb27a262c44a..c288ef7e47b4 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -84,6 +84,7 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = { [IRQIO_PCI] = {.name = "PCI", .desc = "[I/O] PCI Interrupt" }, [IRQIO_MSI] = {.name = "MSI", .desc = "[I/O] MSI Interrupt" }, [IRQIO_VIR] = {.name = "VIR", .desc = "[I/O] Virtual I/O Devices"}, + [IRQIO_VAI] = {.name = "VAI", .desc = "[I/O] Virtual I/O Devices AI"}, [NMI_NMI] = {.name = "NMI", .desc = "[NMI] Machine Check"}, [CPU_RST] = {.name = "RST", .desc = "[CPU] CPU Restart"}, }; |