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rpmsg-nocopy-ping.c
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rpmsg-nocopy-ping.c
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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2020, Xiaomi Inc. All rights reserved.
* Copyright (c) 2020, STMicroelectronics
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <openamp/open_amp.h>
#include <metal/alloc.h>
#include "platform_info.h"
#include "rpmsg-echo.h"
#define LPRINTF(format, ...) printf(format, ##__VA_ARGS__)
#define LPERROR(format, ...) LPRINTF("ERROR: " format, ##__VA_ARGS__)
struct _payload {
unsigned long num;
unsigned long size;
unsigned char data[];
};
struct rpmsg_rcv_msg {
struct _payload *payload;
size_t len;
struct rpmsg_endpoint *ept;
};
static int err_cnt;
static struct rpmsg_rcv_msg rcv_msg;
#define PAYLOAD_MIN_SIZE 1
/* Globals */
static struct rpmsg_endpoint lept;
static int rnum;
static int err_cnt;
static int ept_deleted;
static int rpmsg_check_rcv_msg(struct rpmsg_rcv_msg *msg, uint32_t exp_num)
{
int i, ret = RPMSG_SUCCESS;
struct _payload *r_payload = msg->payload;
if (r_payload->num != exp_num) {
LPERROR("Invalid message number received %ld, expected %d\r\n",
r_payload->num, exp_num);
ret = RPMSG_ERR_PARAM;
goto out;
}
if (r_payload->size == 0) {
LPERROR(" Invalid size of package is received.\r\n");
ret = RPMSG_ERR_PARAM;
goto out;
}
/* Validate data buffer integrity. */
for (i = 0; i < (int)r_payload->size; i++) {
if (r_payload->data[i] != 0xA5) {
LPRINTF("Data corruption at index %d\r\n", i);
ret = RPMSG_ERR_PARAM;
goto out;
}
}
out:
rpmsg_release_rx_buffer(msg->ept, r_payload);
return ret;
}
static int rpmsg_endpoint_cb(struct rpmsg_endpoint *ept, void *data, size_t len,
uint32_t src, void *priv)
{
(void)src;
(void)priv;
rpmsg_hold_rx_buffer(ept, data);
rcv_msg.ept = ept;
rcv_msg.payload = (struct _payload *)data;
rcv_msg.len = len;
LPRINTF(" received payload number %lu of size %lu \r\n",
rcv_msg.payload->num, (unsigned long)len);
rnum = rcv_msg.payload->num + 1;
return RPMSG_SUCCESS;
}
static void rpmsg_service_unbind(struct rpmsg_endpoint *ept)
{
(void)ept;
rpmsg_destroy_ept(&lept);
LPRINTF("echo test: service is destroyed\r\n");
ept_deleted = 1;
}
static void rpmsg_name_service_bind_cb(struct rpmsg_device *rdev,
const char *name, uint32_t dest)
{
LPRINTF("new endpoint notification is received.\r\n");
if (strcmp(name, RPMSG_SERVICE_NAME))
LPERROR("Unexpected name service %s.\r\n", name);
else
(void)rpmsg_create_ept(&lept, rdev, RPMSG_SERVICE_NAME,
RPMSG_ADDR_ANY, dest,
rpmsg_endpoint_cb,
rpmsg_service_unbind);
}
static int app(struct rpmsg_device *rdev, void *priv)
{
int ret;
int i, num_payloads;
uint32_t size, max_size;
int expect_rnum = 0;
LPRINTF(" 1 - Send data to remote core, retrieve the echo");
LPRINTF(" and validate its integrity ..\r\n");
/* Create RPMsg endpoint */
ret = rpmsg_create_ept(&lept, rdev, RPMSG_SERVICE_NAME,
RPMSG_ADDR_ANY, RPMSG_ADDR_ANY,
rpmsg_endpoint_cb, rpmsg_service_unbind);
if (ret) {
LPERROR("Failed to create RPMsg endpoint.\r\n");
return ret;
}
while (!is_rpmsg_ept_ready(&lept))
platform_poll(priv);
LPRINTF("RPMSG endpoint is binded with remote.\r\n");
max_size = rpmsg_get_tx_buffer_size(&lept);
if ((int32_t)max_size <= 0) {
LPERROR("No available buffer size.\r\n");
rpmsg_destroy_ept(&lept);
return -1;
}
max_size -= sizeof(struct _payload);
num_payloads = max_size - PAYLOAD_MIN_SIZE + 1;
for (i = 0, size = PAYLOAD_MIN_SIZE; i < num_payloads; i++, size++) {
struct _payload *i_payload;
i_payload = rpmsg_get_tx_payload_buffer(&lept, &max_size, 1);
if (!i_payload) {
LPERROR("Failed to get payload...\r\n");
break;
}
i_payload->num = i;
i_payload->size = size;
/* Mark the data buffer. */
memset(&i_payload->data[0], 0xA5, size);
LPRINTF("sending payload number %lu of size %lu\r\n",
i_payload->num,
(unsigned long)(2 * sizeof(unsigned long)) + size);
ret = rpmsg_send_nocopy(&lept, i_payload,
(2 * sizeof(unsigned long)) + size);
if (ret < 0) {
LPERROR("Failed to send data...\r\n");
break;
}
LPRINTF("echo test: sent : %lu\r\n",
(unsigned long)(2 * sizeof(unsigned long)) + size);
expect_rnum++;
do {
platform_poll(priv);
} while ((rnum < expect_rnum) && !ept_deleted);
if (ept_deleted)
break;
if (rpmsg_check_rcv_msg(&rcv_msg, expect_rnum - 1))
err_cnt++;
}
LPRINTF("**********************************\r\n");
LPRINTF(" Test Results: Error count = %d \r\n", err_cnt);
LPRINTF("**********************************\r\n");
/* Destroy the RPMsg endpoint */
rpmsg_destroy_ept(&lept);
LPRINTF("Quitting application .. Echo test end\r\n");
return 0;
}
int main(int argc, char *argv[])
{
void *platform;
struct rpmsg_device *rpdev;
int ret;
/* Initialize platform */
ret = platform_init(argc, argv, &platform);
if (ret) {
LPERROR("Failed to initialize platform.\r\n");
ret = -1;
} else {
rpdev = platform_create_rpmsg_vdev(platform, 0,
VIRTIO_DEV_DRIVER,
NULL,
rpmsg_name_service_bind_cb);
if (!rpdev) {
LPERROR("Failed to create rpmsg virtio device.\r\n");
ret = -1;
} else {
app(rpdev, platform);
platform_release_rpmsg_vdev(rpdev, platform);
ret = 0;
}
}
LPRINTF("Stopping application...\r\n");
platform_cleanup(platform);
return ret;
}