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dm: virtio-input: implement callbacks of virtio_input_ops 

This patch implements the callbacks required by virtio_input_ops:
reset/cfgread/cfgwrite/apply_features/set_status.

Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Hao Li <hao.l.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jian Jun Chen 2018-04-16 09:40:19 +08:00 committed by Jack Ren
parent 9741e1ab2c
commit 25fe5634d3
1 changed files with 46 additions and 5 deletions
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51
devicemodel/hw/pci/virtio/virtio_input.c
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@ -157,6 +157,8 @@ static void virtio_input_neg_features(void *, uint64_t);
static void virtio_input_set_status(void *, uint64_t);
static int virtio_input_cfgread(void *, int, int, uint32_t *);
static int virtio_input_cfgwrite(void *, int, int, uint32_t);
static bool virtio_input_get_config(struct virtio_input *, uint8_t, uint8_t,
struct virtio_input_config *);
static struct virtio_ops virtio_input_ops = {
"virtio_input", /* our name */
@ -174,32 +176,63 @@ static struct virtio_ops virtio_input_ops = {
static void
virtio_input_reset(void *vdev)
{
/* to be implemented */
struct virtio_input *vi;
vi = vdev;
DPRINTF(("vtinput: device reset requested!\n"));
vi->ready = false;
virtio_reset_dev(&vi->base);
}
static void
virtio_input_neg_features(void *vdev, uint64_t negotiated_features)
{
/* to be implemented */
struct virtio_input *vi = vdev;
vi->features = negotiated_features;
}
static void
virtio_input_set_status(void *vdev, uint64_t status)
{
/* to be implemented */
struct virtio_input *vi = vdev;
if (status & VIRTIO_CR_STATUS_DRIVER_OK) {
if (!vi->ready)
vi->ready = true;
}
}
static int
virtio_input_cfgread(void *vdev, int offset, int size, uint32_t *retval)
{
/* to be implemented */
struct virtio_input *vi = vdev;
struct virtio_input_config cfg;
bool rc;
rc = virtio_input_get_config(vi, vi->cfg.select,
vi->cfg.subsel, &cfg);
if (rc)
memcpy(retval, (uint8_t *)&cfg + offset, size);
else
memset(retval, 0, size);
return 0;
}
static int
virtio_input_cfgwrite(void *vdev, int offset, int size, uint32_t val)
{
/* to be implemented */
struct virtio_input *vi = vdev;
if (offset == offsetof(struct virtio_input_config, select))
vi->cfg.select = (uint8_t)val;
else if (offset == offsetof(struct virtio_input_config, subsel))
vi->cfg.subsel = (uint8_t)val;
else
DPRINTF(("vtinput: write to readonly reg %d\n", offset));
return 0;
}
@ -223,6 +256,14 @@ virtio_input_read_event(int fd __attribute__((unused)),
/* to be implemented */
}
static bool
virtio_input_get_config(struct virtio_input *vi, uint8_t select,
uint8_t subsel, struct virtio_input_config *cfg)
{
/* to be implemented */
return false;
}
static int
virtio_input_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
{