Skip to content

rpmsg: wait ept ready in rpmsg_send #611

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wyr-7 wants to merge 1 commit into from
Closed

rpmsg: wait ept ready in rpmsg_send #611

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
59 changes: 42 additions & 17 deletions lib/include/openamp/rpmsg.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
#include <metal/compiler.h>
#include <metal/mutex.h>
#include <metal/list.h>
#include <metal/sleep.h>
#include <metal/utilities.h>
#include <string.h>
#include <stdbool.h>
Expand All @@ -32,6 +33,12 @@ extern "C" {
#define RPMSG_RESERVED_ADDRESSES (1024)
#define RPMSG_ADDR_ANY 0xFFFFFFFF

/* Total tick count for 15secs - 1usec tick. */
#define RPMSG_TICK_COUNT 15000000

/* Time to wait - In multiple of 1 msecs. */
#define RPMSG_TICKS_PER_INTERVAL 1000

/* Error macros. */
#define RPMSG_SUCCESS 0
#define RPMSG_ERROR_BASE -2000
Expand Down Expand Up @@ -179,6 +186,19 @@ int rpmsg_send_offchannel_raw(struct rpmsg_endpoint *ept, uint32_t src,
uint32_t dst, const void *data, int len,
int wait);

/**
* @brief Check if the rpmsg endpoint ready to send
*
* @ept: pointer to rpmsg endpoint
*
* Returns 1 if the rpmsg endpoint has both local addr and destination
* addr set, 0 otherwise
*/
static inline unsigned int is_rpmsg_ept_ready(struct rpmsg_endpoint *ept)
{
return ept && ept->rdev && ept->dest_addr != RPMSG_ADDR_ANY;
}

/**
* @brief Send a message across to the remote processor
*
Expand All @@ -198,11 +218,20 @@ int rpmsg_send_offchannel_raw(struct rpmsg_endpoint *ept, uint32_t src,
static inline int rpmsg_send(struct rpmsg_endpoint *ept, const void *data,
int len)
{
int tc = 0;

if (!ept)
return RPMSG_ERR_PARAM;

return rpmsg_send_offchannel_raw(ept, ept->addr, ept->dest_addr, data,
len, true);
for (; tc < RPMSG_TICK_COUNT; tc += RPMSG_TICKS_PER_INTERVAL) {
if (is_rpmsg_ept_ready(ept))
return rpmsg_send_offchannel_raw(ept, ept->addr,
ept->dest_addr,
data, len, true);
metal_sleep_usec(RPMSG_TICKS_PER_INTERVAL);
}

return RPMSG_ERR_ADDR;
}

/**
Expand Down Expand Up @@ -538,11 +567,20 @@ static inline int rpmsg_sendto_nocopy(struct rpmsg_endpoint *ept,
static inline int rpmsg_send_nocopy(struct rpmsg_endpoint *ept,
const void *data, int len)
{
int tc = 0;

if (!ept)
return RPMSG_ERR_PARAM;

return rpmsg_send_offchannel_nocopy(ept, ept->addr,
ept->dest_addr, data, len);
for (; tc < RPMSG_TICK_COUNT; tc += RPMSG_TICKS_PER_INTERVAL) {
if (is_rpmsg_ept_ready(ept))
return rpmsg_send_offchannel_nocopy(ept, ept->addr,
ept->dest_addr,
data, len);
metal_sleep_usec(RPMSG_TICKS_PER_INTERVAL);
}

return RPMSG_ERR_ADDR;
}

/**
Expand Down Expand Up @@ -587,19 +625,6 @@ int rpmsg_create_ept(struct rpmsg_endpoint *ept, struct rpmsg_device *rdev,
*/
void rpmsg_destroy_ept(struct rpmsg_endpoint *ept);

/**
* @brief Check if the rpmsg endpoint ready to send
*
* @param ept Pointer to rpmsg endpoint
*
* @return 1 if the rpmsg endpoint has both local addr and destination
* addr set, 0 otherwise
*/
static inline unsigned int is_rpmsg_ept_ready(struct rpmsg_endpoint *ept)
{
return ept && ept->rdev && ept->dest_addr != RPMSG_ADDR_ANY;
}

#if defined __cplusplus
}
#endif
Expand Down
7 changes: 0 additions & 7 deletions lib/rpmsg/rpmsg_virtio.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,6 @@
*/

#include <metal/alloc.h>
#include <metal/sleep.h>
#include <metal/utilities.h>
#include <openamp/rpmsg_virtio.h>
#include <openamp/virtqueue.h>
Expand All @@ -18,12 +17,6 @@

#define RPMSG_NUM_VRINGS 2

/* Total tick count for 15secs - 1usec tick. */
#define RPMSG_TICK_COUNT 15000000

/* Time to wait - In multiple of 1 msecs. */
#define RPMSG_TICKS_PER_INTERVAL 1000

/*
* Get the buffer held counter value.
* If 0 the buffer can be released
Expand Down