On Thu, 2013-03-21 at 08:29 +0000, Rusty Russell wrote:
> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
> index 1ba0d68..ad7f38f 100644
> --- a/drivers/virtio/virtio_mmio.c
> +++ b/drivers/virtio/virtio_mmio.c
> @@ -178,6 +178,19 @@ static void vm_get(struct virtio_device *vdev, unsigned offset,
> ptr[i] = readb(vm_dev->base + VIRTIO_MMIO_CONFIG + offset + i);
> }
>
> +#define VM_GETx(bits) \
> +static u##bits vm_get##bits(struct virtio_device *vdev, unsigned int offset) \
> +{ \
> + u##bits v; \
> + vm_get(vdev, offset, &v, sizeof(v)); \
> + return v; \
> +}
> +
> +VM_GETx(8)
> +VM_GETx(16)
> +VM_GETx(32)
> +VM_GETx(64)
> +
> static void vm_set(struct virtio_device *vdev, unsigned offset,
> const void *buf, unsigned len)
> {
> @@ -189,6 +202,18 @@ static void vm_set(struct virtio_device *vdev, unsigned offset,
> writeb(ptr[i], vm_dev->base + VIRTIO_MMIO_CONFIG + offset + i);
> }
>
> +#define VM_SETx(bits) \
> +static void vm_set##bits(struct virtio_device *vdev, unsigned int offset, \
> + u##bits v) \
> +{ \
> + vm_set(vdev, offset, &v, sizeof(v)); \
> +}
> +
> +VM_SETx(8)
> +VM_SETx(16)
> +VM_SETx(32)
> +VM_SETx(64)
> +
> static u8 vm_get_status(struct virtio_device *vdev)
> {
> struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
> @@ -424,8 +449,14 @@ static const char *vm_bus_name(struct virtio_device *vdev)
> }
>
> static const struct virtio_config_ops virtio_mmio_config_ops = {
> - .get = vm_get,
> - .set = vm_set,
> + .get8 = vm_get8,
> + .set8 = vm_set8,
> + .get16 = vm_get16,
> + .set16 = vm_set16,
> + .get32 = vm_get32,
> + .set32 = vm_set32,
> + .get64 = vm_get64,
> + .set64 = vm_set64,
> .get_status = vm_get_status,
> .set_status = vm_set_status,
> .reset = vm_reset,
The idea is by all means fine with me. I wouldn't write it like this,
but I see you're already toying with other alternatives. And I'll have
to make it LE only anyway, so I guess the implementation details don't
really matter right now.
Paweł
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