search for: virtio_mmio_device

...changed, 203 insertions(+), 31 deletions(-) >> >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c >> index c600ccf..2b7d935 100644 >> --- a/drivers/virtio/virtio_mmio.c >> +++ b/drivers/virtio/virtio_mmio.c >> @@ -122,6 +122,15 @@ struct virtio_mmio_device { >> /* a list of queues so we can dispatch IRQs */ >> spinlock_t lock; >> struct list_head virtqueues; >> + >> + /* multiple irq support */ >> + int single_irq_enabled; >> + /* Number of available irqs */ >> + unsigned num_irqs; >> + /* U...

...changed, 203 insertions(+), 31 deletions(-) >> >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c >> index c600ccf..2b7d935 100644 >> --- a/drivers/virtio/virtio_mmio.c >> +++ b/drivers/virtio/virtio_mmio.c >> @@ -122,6 +122,15 @@ struct virtio_mmio_device { >> /* a list of queues so we can dispatch IRQs */ >> spinlock_t lock; >> struct list_head virtqueues; >> + >> + /* multiple irq support */ >> + int single_irq_enabled; >> + /* Number of available irqs */ >> + unsigned num_irqs; >> + /* U...

On Mon, 2011-10-24 at 03:33 +0100, Rusty Russell wrote: > No, that's it I think. Please send a diff for the documentation, since > I'm updating the LyX master and I've already applied your previous > version. Here it goes (below). Also do you think you would be able to merge the driver (corresponding v4 patch follows) in the 3.2 merge window that seems to have just opened?

On Mon, 2011-10-24 at 03:33 +0100, Rusty Russell wrote: > No, that's it I think. Please send a diff for the documentation, since > I'm updating the LyX master and I've already applied your previous > version. Here it goes (below). Also do you think you would be able to merge the driver (corresponding v4 patch follows) in the 3.2 merge window that seems to have just opened?

...o_mmio.c b/drivers/virtio/virtio_mmio.c index 0375456..69b2e4d 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -237,6 +237,16 @@ static void vm_set(struct virtio_device *vdev, unsigned offset, } } +static u32 vm_generation(struct virtio_device *vdev) +{ + struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); + + if (vm_dev->version == 1) + return 0; + else + return readl(vm_dev->base + VIRTIO_MMIO_CONFIG_GENERATION); +} + static u8 vm_get_status(struct virtio_device *vdev) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); @@ -503,6 +51...

...o_mmio.c b/drivers/virtio/virtio_mmio.c index 0375456..69b2e4d 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -237,6 +237,16 @@ static void vm_set(struct virtio_device *vdev, unsigned offset, } } +static u32 vm_generation(struct virtio_device *vdev) +{ + struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); + + if (vm_dev->version == 1) + return 0; + else + return readl(vm_dev->base + VIRTIO_MMIO_CONFIG_GENERATION); +} + static u8 vm_get_status(struct virtio_device *vdev) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); @@ -503,6 +51...

...+++------ > 1 files changed, 203 insertions(+), 31 deletions(-) > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > index c600ccf..2b7d935 100644 > --- a/drivers/virtio/virtio_mmio.c > +++ b/drivers/virtio/virtio_mmio.c > @@ -122,6 +122,15 @@ struct virtio_mmio_device { > /* a list of queues so we can dispatch IRQs */ > spinlock_t lock; > struct list_head virtqueues; > + > + /* multiple irq support */ > + int single_irq_enabled; > + /* Number of available irqs */ > + unsigned num_irqs; > + /* Used number of irqs */ > + int use...

...++++++- include/linux/virtio_mmio.h | 3 +++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index ef9a165..28ddb55 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -122,6 +122,8 @@ struct virtio_mmio_device { /* a list of queues so we can dispatch IRQs */ spinlock_t lock; struct list_head virtqueues; + + uint8_t *isr_mem; }; struct virtio_mmio_vq_info { @@ -443,6 +445,7 @@ static int virtio_mmio_probe(struct platform_device *pdev) struct virtio_mmio_device *vm_dev; struct resource *mem;...

...1 deletions(-) > >> > >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > >> index c600ccf..2b7d935 100644 > >> --- a/drivers/virtio/virtio_mmio.c > >> +++ b/drivers/virtio/virtio_mmio.c > >> @@ -122,6 +122,15 @@ struct virtio_mmio_device { > >> /* a list of queues so we can dispatch IRQs */ > >> spinlock_t lock; > >> struct list_head virtqueues; > >> + > >> + /* multiple irq support */ > >> + int single_irq_enabled; > >> + /* Number of available irqs */ > >&...

...4 ++++++++++++++++++++++++++++++++++++------ 1 files changed, 203 insertions(+), 31 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index c600ccf..2b7d935 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -122,6 +122,15 @@ struct virtio_mmio_device { /* a list of queues so we can dispatch IRQs */ spinlock_t lock; struct list_head virtqueues; + + /* multiple irq support */ + int single_irq_enabled; + /* Number of available irqs */ + unsigned num_irqs; + /* Used number of irqs */ + int used_irqs; + /* Name strings for interrupts. */ + cha...

...4 ++++++++++++++++++++++++++++++++++++------ 1 files changed, 203 insertions(+), 31 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index c600ccf..2b7d935 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -122,6 +122,15 @@ struct virtio_mmio_device { /* a list of queues so we can dispatch IRQs */ spinlock_t lock; struct list_head virtqueues; + + /* multiple irq support */ + int single_irq_enabled; + /* Number of available irqs */ + unsigned num_irqs; + /* Used number of irqs */ + int used_irqs; + /* Name strings for interrupts. */ + cha...

...--------------------------------------- 1 file changed, 4 insertions(+), 48 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 98adb10025fc..1367aec415bf 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -89,22 +89,8 @@ struct virtio_mmio_device { void __iomem *base; unsigned long version; - - /* a list of queues so we can dispatch IRQs */ - spinlock_t lock; - struct list_head virtqueues; -}; - -struct virtio_mmio_vq_info { - /* the actual virtqueue */ - struct virtqueue *vq; - - /* the list node for the virtqueues list */ - struct l...

...--------------------------------------- 1 file changed, 4 insertions(+), 48 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 98adb10025fc..1367aec415bf 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -89,22 +89,8 @@ struct virtio_mmio_device { void __iomem *base; unsigned long version; - - /* a list of queues so we can dispatch IRQs */ - spinlock_t lock; - struct list_head virtqueues; -}; - -struct virtio_mmio_vq_info { - /* the actual virtqueue */ - struct virtqueue *vq; - - /* the list node for the virtqueues list */ - struct l...

...ff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index cad5698..0375456 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -156,22 +156,85 @@ static void vm_get(struct virtio_device *vdev, unsigned offset, void *buf, unsigned len) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); - u8 *ptr = buf; - int i; + void __iomem *base = vm_dev->base + VIRTIO_MMIO_CONFIG; + u8 b; + __le16 w; + __le32 l; - for (i = 0; i < len; i++) - ptr[i] = readb(vm_dev->base + VIRTIO_MMIO_CONFIG + offset + i); + if (vm_dev->version == 1) { + u8...

...ff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index cad5698..0375456 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -156,22 +156,85 @@ static void vm_get(struct virtio_device *vdev, unsigned offset, void *buf, unsigned len) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); - u8 *ptr = buf; - int i; + void __iomem *base = vm_dev->base + VIRTIO_MMIO_CONFIG; + u8 b; + __le16 w; + __le32 l; - for (i = 0; i < len; i++) - ptr[i] = readb(vm_dev->base + VIRTIO_MMIO_CONFIG + offset + i); + if (vm_dev->version == 1) { + u8...

...h | 3 +++ > 2 files changed, 23 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > index ef9a165..28ddb55 100644 > --- a/drivers/virtio/virtio_mmio.c > +++ b/drivers/virtio/virtio_mmio.c > @@ -122,6 +122,8 @@ struct virtio_mmio_device { > /* a list of queues so we can dispatch IRQs */ > spinlock_t lock; > struct list_head virtqueues; > + > + uint8_t *isr_mem; > }; > > struct virtio_mmio_vq_info { > @@ -443,6 +445,7 @@ static int virtio_mmio_probe(struct platform_device *pdev) > struct vi...

...s/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index f363fbeb5ab0..60dde8ed163b 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -463,9 +463,14 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct irq_affinity *desc) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); - unsigned int irq = platform_get_irq(vm_dev->pdev, 0); + int irq = platform_get_irq(vm_dev->pdev, 0); int i, err, queue_idx = 0; + if (irq < 0) { + dev_err(&vdev->dev, "no IRQ resource defined\n"); + return -ENODEV; + } + err...

...s/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index f363fbeb5ab0..60dde8ed163b 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -463,9 +463,14 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct irq_affinity *desc) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); - unsigned int irq = platform_get_irq(vm_dev->pdev, 0); + int irq = platform_get_irq(vm_dev->pdev, 0); int i, err, queue_idx = 0; + if (irq < 0) { + dev_err(&vdev->dev, "no IRQ resource defined\n"); + return -ENODEV; + } + err...

From: Li Liu <john.liuli at huawei.com> This set of patches try to implemet irqfd support of vhost-net based on virtio-mmio. I had posted a mail to talking about the status of vhost-net on kvm-arm refer to http://www.spinics.net/lists/kvm-arm/msg10804.html. Some dependent patches are listed in the mail too. Basically the vhost-net brings great performance improvements, almost 50%+.

From: Li Liu <john.liuli at huawei.com> This set of patches try to implemet irqfd support of vhost-net based on virtio-mmio. I had posted a mail to talking about the status of vhost-net on kvm-arm refer to http://www.spinics.net/lists/kvm-arm/msg10804.html. Some dependent patches are listed in the mail too. Basically the vhost-net brings great performance improvements, almost 50%+.