remoteproc_virtio.c File Reference

#include <openamp/remoteproc.h>
#include <openamp/remoteproc_virtio.h>
#include <openamp/virtqueue.h>
#include <metal/cpu.h>
#include <metal/utilities.h>
#include <metal/alloc.h>

Functions
static void	rproc_virtio_virtqueue_notify (struct virtqueue *vq)
static unsigned char	rproc_virtio_get_status (struct virtio_device *vdev)
static void	rproc_virtio_set_status (struct virtio_device *vdev, unsigned char status)
static uint32_t	rproc_virtio_get_dfeatures (struct virtio_device *vdev)
static uint32_t	rproc_virtio_get_features (struct virtio_device *vdev)
static void	rproc_virtio_set_features (struct virtio_device *vdev, uint32_t features)
static uint32_t	rproc_virtio_negotiate_features (struct virtio_device *vdev, uint32_t features)
static void	rproc_virtio_read_config (struct virtio_device *vdev, uint32_t offset, void *dst, int length)
static void	rproc_virtio_write_config (struct virtio_device *vdev, uint32_t offset, void *src, int length)
static void	rproc_virtio_reset_device (struct virtio_device *vdev)
struct virtio_device *	rproc_virtio_create_vdev (unsigned int role, unsigned int notifyid, void *rsc, struct metal_io_region *rsc_io, void *priv, rpvdev_notify_func notify, virtio_dev_reset_cb rst_cb)
	Create rproc virtio vdev. More...
void	rproc_virtio_remove_vdev (struct virtio_device *vdev)
	Remove rproc virtio vdev. More...
int	rproc_virtio_init_vring (struct virtio_device *vdev, unsigned int index, unsigned int notifyid, void *va, struct metal_io_region *io, unsigned int num_descs, unsigned int align)
	Initialize rproc virtio vring. More...
int	rproc_virtio_notified (struct virtio_device *vdev, uint32_t notifyid)
	remoteproc virtio is got notified More...
void	rproc_virtio_wait_remote_ready (struct virtio_device *vdev)
	Blocking function, waiting for the remote core is ready to start communications. More...

Variables
static const struct virtio_dispatch	remoteproc_virtio_dispatch_funcs

Function Documentation

rproc_virtio_create_vdev()

struct virtio_device* rproc_virtio_create_vdev	(	unsigned int	role,
		unsigned int	notifyid,
		void *	rsc,
		struct metal_io_region *	rsc_io,
		void *	priv,
		rpvdev_notify_func	notify,
		virtio_dev_reset_cb	rst_cb
	)

Create rproc virtio vdev.

Parameters

role	VIRTIO_DEV_DRIVER or VIRTIO_DEV_DEVICE
notifyid	Virtio device notification id
rsc	Pointer to the virtio device resource
rsc_io	Pointer to the virtio device resource I/O region
priv	Pointer to the private data
notify	vdev and virtqueue notification function
rst_cb	Reset virtio device callback

Returns

pointer to the created virtio device for success, NULL for failure.

rproc_virtio_get_dfeatures()

static uint32_t rproc_virtio_get_dfeatures ( struct virtio_device *  vdev )

static

rproc_virtio_get_features()

static uint32_t rproc_virtio_get_features ( struct virtio_device *  vdev )

static

rproc_virtio_get_status()

static unsigned char rproc_virtio_get_status ( struct virtio_device *  vdev )

static

rproc_virtio_init_vring()

int rproc_virtio_init_vring	(	struct virtio_device *	vdev,
		unsigned int	index,
		unsigned int	notifyid,
		void *	va,
		struct metal_io_region *	io,
		unsigned int	num_descs,
		unsigned int	align
	)

Initialize rproc virtio vring.

Parameters

vdev	Pointer to the virtio device
index	vring index in the virtio device
notifyid	remoteproc vring notification id
va	vring virtual address
io	Pointer to vring I/O region
num_descs	Number of descriptors
align	vring alignment

Returns

0 for success, negative value for failure.

rproc_virtio_negotiate_features()

static uint32_t rproc_virtio_negotiate_features ( struct virtio_device *  vdev, uint32_t  features  )

static

rproc_virtio_notified()

int rproc_virtio_notified	(	struct virtio_device *	vdev,
		uint32_t	notifyid
	)

remoteproc virtio is got notified

Parameters

vdev	Pointer to the virtio device
notifyid	Notify id

Returns

0 for successful, negative value for failure

rproc_virtio_read_config()

static void rproc_virtio_read_config ( struct virtio_device *  vdev, uint32_t  offset, void *  dst, int  length  )

static

rproc_virtio_remove_vdev()

void rproc_virtio_remove_vdev

(

struct virtio_device *

vdev

)

Remove rproc virtio vdev.

Parameters

vdev	Pointer to the virtio device

rproc_virtio_reset_device()

static void rproc_virtio_reset_device ( struct virtio_device *  vdev )

static

rproc_virtio_set_features()

static void rproc_virtio_set_features ( struct virtio_device *  vdev, uint32_t  features  )

static

rproc_virtio_set_status()

static void rproc_virtio_set_status ( struct virtio_device *  vdev, unsigned char  status  )

static

rproc_virtio_virtqueue_notify()

static void rproc_virtio_virtqueue_notify ( struct virtqueue *  vq )

static

rproc_virtio_wait_remote_ready()

void rproc_virtio_wait_remote_ready

(

struct virtio_device *

vdev

)

Blocking function, waiting for the remote core is ready to start communications.

Parameters

vdev	Pointer to the virtio device

Returns

true when remote processor is ready.

rproc_virtio_write_config()

static void rproc_virtio_write_config ( struct virtio_device *  vdev, uint32_t  offset, void *  src, int  length  )

static

Variable Documentation

remoteproc_virtio_dispatch_funcs

const struct virtio_dispatch remoteproc_virtio_dispatch_funcs

static

Initial value:

= {
        .get_status = rproc_virtio_get_status,
        .get_features = rproc_virtio_get_features,
        .read_config = rproc_virtio_read_config,
        .notify = rproc_virtio_virtqueue_notify,
 
        
        .set_status = rproc_virtio_set_status,
        .set_features = rproc_virtio_set_features,
        .negotiate_features = rproc_virtio_negotiate_features,
        .write_config = rproc_virtio_write_config,
        .reset_device = rproc_virtio_reset_device,
 
}