litmus-rt.git/drivers/virtio, branch master

virtio_pci: Clear stale cpumask when setting irq affinity

2015-06-04T12:47:49+00:00

The cpumask vp_dev->msix_affinity_masks[info->msix_vector] may contain
staled information when vp_set_vq_affinity() gets called, so clear it
before setting the new cpu bit mask.

Cc: stable@vger.kernel.org
Signed-off-by: Jiang Liu 
Signed-off-by: Michael S. Tsirkin

virtio: drop virtio_device_is_legacy_only

2015-04-15T03:11:14+00:00

virtio_device_is_legacy_only is now unused, drop
it from core.

Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Cornelia Huck 
Signed-off-by: Rusty Russell

virtio_pci: support non-legacy balloon devices

2015-04-15T03:11:13+00:00

virtio_device_is_legacy_only is always false now,
drop the test from virtio pci.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

virtio_mmio: support non-legacy balloon devices

2015-04-15T03:11:12+00:00

virtio_device_is_legacy_only is always false now,
drop the test from virtio mmio.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Pawel Moll 
Signed-off-by: Rusty Russell

virtio: balloon might not be a legacy device

2015-04-15T03:11:11+00:00

We added transitional device support to balloon driver,
so we don't need to black-list it in core anymore.

Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Cornelia Huck 
Signed-off-by: Rusty Russell

virtio_balloon: transitional interface

2015-04-15T03:11:09+00:00

Virtio 1.0 doesn't include a modern balloon device.
But it's not a big change to support a transitional
balloon device: this has the advantage of supporting
existing drivers, transparently.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Cornelia Huck 
Signed-off-by: Rusty Russell

virtio_pci_modern: switch to type-safe io accessors

2015-04-01T04:13:34+00:00

As Rusty noted, we were accessing queue_enable with an incorrect width.
Switch to type-safe accessors so we don't make this mistake again in the
future.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

virtio_pci_modern: type-safe io accessors

2015-04-01T04:07:15+00:00

The spec is very clear on this:

4.1.3.1 Driver Requirements: PCI Device Layout

The driver MUST access each field using the “natural” access method,
i.e. 32-bit accesses for 32-bit fields, 16-bit accesses for 16-bit
fields and 8-bit accesses for 8-bit fields.

Add type-safe wrappers to prevent access with incorrect width.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

Add virtio-input driver.

2015-03-29T01:43:52+00:00

virtio-input is basically evdev-events-over-virtio, so this driver isn't
much more than reading configuration from config space and forwarding
incoming events to the linux input layer.

Signed-off-by: Gerd Hoffmann 
Acked-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

virtio_mmio: fix access width for mmio

2015-03-17T01:42:21+00:00

Going over the virtio mmio code, I noticed that it doesn't correctly
access modern device config values using "natural" accessors: it uses
readb to get/set them byte by byte, while the virtio 1.0 spec explicitly states:

	4.2.2.2 Driver Requirements: MMIO Device Register Layout

	...

	The driver MUST only use 32 bit wide and aligned reads and writes to
	access the control registers described in table 4.1.
	For the device-specific configuration space, the driver MUST use
	8 bit wide accesses for 8 bit wide fields, 16 bit wide and aligned
	accesses for 16 bit wide fields and 32 bit wide and aligned accesses for
	32 and 64 bit wide fields.

Borrow code from virtio_pci_modern to do this correctly.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell