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remoteproc: implement rproc_virtio_read_config/rproc_virtio_write_config #171

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remoteproc: implement rproc_virtio_read_config/rproc_virtio_write_config #171

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33 changes: 25 additions & 8 deletions lib/remoteproc/remoteproc_virtio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -128,20 +128,37 @@ static uint32_t rproc_virtio_negotiate_features(struct virtio_device *vdev,
static void rproc_virtio_read_config(struct virtio_device *vdev,
uint32_t offset, void *dst, int length)
{
(void)vdev;
(void)offset;
(void)dst;
(void)length;
struct remoteproc_virtio *rpvdev;
struct fw_rsc_vdev *vdev_rsc;
struct metal_io_region *io;
char *config;

rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
vdev_rsc = rpvdev->vdev_rsc;
config = (char *)(&vdev_rsc->vring[vdev->vrings_num]);
io = rpvdev->vdev_rsc_io;
metal_io_block_read(io,
metal_io_virt_to_offset(io, config + offset),
dst, length);
}

#ifndef VIRTIO_SLAVE_ONLY
static void rproc_virtio_write_config(struct virtio_device *vdev,
uint32_t offset, void *src, int length)
{
(void)vdev;
(void)offset;
(void)src;
(void)length;
struct remoteproc_virtio *rpvdev;
struct fw_rsc_vdev *vdev_rsc;
struct metal_io_region *io;
char *config;

rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
vdev_rsc = rpvdev->vdev_rsc;
config = (char *)(&vdev_rsc->vring[vdev->vrings_num]);
io = rpvdev->vdev_rsc_io;
metal_io_block_write(io,
metal_io_virt_to_offset(io, config + offset),
src, length);
rpvdev->notify(rpvdev->priv, vdev->notifyid);
}

static void rproc_virtio_reset_device(struct virtio_device *vdev)
Expand Down