TX vring block

[Minerro886]

Now I use opneamp for communication (zynqmp platform). But when I send data to rpu on the Linux side, I can only send the same amount as VRING_SIZE. After this number is exceeded, no more data can be sent. what should i do

`/*

• Copyright (c) 2014, Mentor Graphics Corporation
• All rights reserved.
• Copyright (c) 2015 Xilinx, Inc. All rights reserved.
• SPDX-License-Identifier: BSD-3-Clause
  */

/* This file populates resource table for BM remote

• for use by the Linux Master */

#include <openamp/open_amp.h>
#include "rsc_table.h"

/* Place resource table in special ELF section */
#define __section_t(S) attribute((section(#S)))
#define __resource __section_t(.resource_table)

#define RPMSG_IPU_C0_FEATURES 1

/* VirtIO rpmsg device id */
#define VIRTIO_ID_RPMSG_ 7

/* Remote supports Name Service announcement */
#define VIRTIO_RPMSG_F_NS 0

#define NUM_VRINGS 0x02
#define VRING_ALIGN 0x1000
#define RING_TX FW_RSC_U32_ADDR_ANY
#define RING_RX FW_RSC_U32_ADDR_ANY
#define VRING_SIZE 50 //begin: 256

#define NUM_TABLE_ENTRIES 1

struct remote_resource_table __resource resources = {
/* Version */
1,

/* NUmber of table entries */
NUM_TABLE_ENTRIES,
/* reserved fields */
{0, 0,},

/* Offsets of rsc entries */
{
 offsetof(struct remote_resource_table, rpmsg_vdev),
 },

/* Virtio device entry */
{
 RSC_VDEV, VIRTIO_ID_RPMSG_, 0, RPMSG_IPU_C0_FEATURES, 0, 0, 0,
 NUM_VRINGS, {0, 0},
 },

/* Vring rsc entry - part of vdev rsc entry */
{RING_TX, VRING_ALIGN, VRING_SIZE, 1, 0},
{RING_RX, VRING_ALIGN, VRING_SIZE, 2, 0},

};

void *get_resource_table (int rsc_id, int *len)
{
(void) rsc_id;
*len = sizeof(resources);
return &resources;
}
`