int rpmsg_retarget_init(struct rpmsg_channel *rp_chnl, rpc_shutdown_cb cb) {
int status;
/* Allocate memory for rpc control block */
rpc_data = (struct _rpc_data*) env_allocate_memory(
sizeof(struct _rpc_data));
/* Create a mutex for synchronization */
status = env_create_mutex(&rpc_data->rpc_lock, 1);
/* Create a mutex for synchronization */
status = env_create_sync_lock(&rpc_data->sync_lock, LOCKED);
/* Create a endpoint to handle rpc response from master */
rpc_data->rpmsg_chnl = rp_chnl;
rpc_data->rp_ept = rpmsg_create_ept(rpc_data->rpmsg_chnl, rpc_cb,
RPMSG_NULL, PROXY_ENDPOINT);
rpc_data->rpc = env_allocate_memory(RPC_BUFF_SIZE);
rpc_data->rpc_response = env_allocate_memory(RPC_BUFF_SIZE);
rpc_data->shutdown_cb = cb;
return status;
}
/**
* rpmsg_rdev_init
*
* This function creates and initializes the remote device. The remote device
* encapsulates virtio device.
*
* @param rdev - pointer to newly created remote device
* @param dev-id - ID of device to create , remote cpu id
* @param role - role of the other device, Master or Remote
* @param channel_created - callback function for channel creation
* @param channel_destroyed - callback function for channel deletion
* @param default_cb - default callback for channel
*
* @return - status of function execution
*
*/
int rpmsg_rdev_init(struct remote_device **rdev, int dev_id, int role,
rpmsg_chnl_cb_t channel_created,
rpmsg_chnl_cb_t channel_destroyed, rpmsg_rx_cb_t default_cb)
{
struct remote_device *rdev_loc;
struct virtio_device *virt_dev;
struct hil_proc *proc;
struct proc_shm *shm;
int status;
/* Initialize HIL data structures for given device */
proc = hil_create_proc(dev_id);
if (!proc) {
return RPMSG_ERR_DEV_ID;
}
/* Create software representation of remote processor. */
rdev_loc =
(struct remote_device *)
env_allocate_memory(sizeof(struct remote_device));
if (!rdev_loc) {
return RPMSG_ERR_NO_MEM;
}
env_memset(rdev_loc, 0x00, sizeof(struct remote_device));
status = env_create_mutex(&rdev_loc->lock, 1);
if (status != RPMSG_SUCCESS) {
/* Cleanup required in case of error is performed by caller */
return status;
}
rdev_loc->proc = proc;
rdev_loc->role = role;
rdev_loc->channel_created = channel_created;
rdev_loc->channel_destroyed = channel_destroyed;
rdev_loc->default_cb = default_cb;
/* Restrict the ept address - zero address can't be assigned */
rdev_loc->bitmap[0] = 1;
/* Initialize the virtio device */
virt_dev = &rdev_loc->virt_dev;
virt_dev->device = proc;
virt_dev->func = &rpmsg_rdev_config_ops;
if (virt_dev->func->set_features != RPMSG_NULL) {
virt_dev->func->set_features(virt_dev, proc->vdev.dfeatures);
}
if (rdev_loc->role == RPMSG_REMOTE) {
/*
* Since device is RPMSG Remote so we need to manage the
* shared buffers. Create shared memory pool to handle buffers.
*/
shm = hil_get_shm_info(proc);
rdev_loc->mem_pool =
sh_mem_create_pool(shm->start_addr, shm->size,
RPMSG_BUFFER_SIZE);
if (!rdev_loc->mem_pool) {
return RPMSG_ERR_NO_MEM;
}
}
/* Initialize channels for RPMSG Remote */
status = rpmsg_rdev_init_channels(rdev_loc);
if (status != RPMSG_SUCCESS) {
return status;
}
*rdev = rdev_loc;
return RPMSG_SUCCESS;
}
