Linux/AM5728: IVA-HD Engine_open() memory access

Hello, is there any word from the software team?  It's the Monday after a long weekend, so I understand if some are taking the day off.  Just making sure that this query doesn't get lost.

Currently I am only failing at the Engine_open stage, passing

"Engine_open("ivahd_vidsvr", NULL, &ec);"

However, I should only be allocating 60 bytes for my decoder struct (or at least that's how big the struct I'm using to represent a codec is) and roughly 28kB of jpeg data to be decoded.  Unless I missed several zero's somewhere, I doubt that I'm trying to pull 128MB with an Engine_open() call.  

I explored some further debugging options and found these error messages which seem to corroborate my theory of the program not seeing the TILER memory.  They are as follows:

[ 466.208051] omap-iommu 55082000.mmu: 55082000.mmu: version 2.1
[ 1301.138421] virtio_rpmsg_bus virtio1: msg received with no recipient

As an addenum, here is the codec structure that I mentioned:

typedef struct decoder{

Engine_Handle engine;
VIDDEC3_Handle codec;
VIDDEC3_Params *params;
VIDDEC3_DynamicParams *dynParams;
VIDDEC3_Status *status;
XDM2_BufDesc *inBufs;
XDM2_BufDesc *outBufs;
VIDDEC3_InArgs *inArgs;
VIDDEC3_OutArgs *outArgs;
char *input;
int id;
int padded_width;
int padded_height;
int orig_width;
int orig_height;

}decoder;

I have also created a dummy application where all it does is call Engine_open() with the same parameters, no other memory buffers are present in the application.  I receive the same SEGFAULT error from /usr/liblibdrm_omap.so.1 

I can also confirm that gstreamer applications that use the IVA-HD are functional.

Here is the dummy C program that I mentioned.

#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>

#include <xdc/std.h>
#include <ti/sdo/ce/Engine.h>
#include <ti/sdo/ce/video3/viddec3.h>
#include <ti/sdo/codecs/jpegvdec/ijpegvdec.h>
#include <dce/libdce.h> 

/*---------------------LOCAL DEFINES---------------------*/
#define SLICEFIFOLEN 3200
#define SLICESIZE 8192
#define PRINT_DEBUG
/*get codec version through XDM_GETVERSION*/
#define GETVERSION
#define STRIDE 4096
//#define JPEGSLICE


/*---------------------LOCAL MACROS---------------------*/
#define ERROR(FMT, ...)  printf("%s:%d:\t%s\terror: " FMT "\n", __FILE__, __LINE__, __FUNCTION__, ##__VA_ARGS__)
/*enable below to print debug information*/
#ifdef PRINT_DEBUG
#define DEBUG(FMT, ...)  printf("%s:%d:\t%s\tdebug: " FMT "\n", __FILE__, __LINE__, __FUNCTION__, ##__VA_ARGS__)
#else
#define DEBUG(FMT, ...)
#endif


/* align x to next highest multiple of 2^n */
#define ALIGN2(x, n)   (((x) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1))
#define PADX ALIGN2(1920, 4)
#define PADY ALIGN2(1080, 4)

int main(){
	Engine_Handle engine = NULL;
	Engine_Error ec;
	engine = Engine_open("ivahd_vidsvr", NULL, &ec);

	if(!engine){
		ERROR("could not open engine!: %p\n", ec);
		return 1;
	}
	DEBUG("engine opened\n");

	return 0;
}

The error that you are seeing with encoder gst plugin is a known issue with that plugin and we are investigating the issue.

Regarding the error you are seeing with Engine_open() call, are you able to run out of box viddec3test binary for h.264 and mpeg-4 stream? Have you looked at this code -
git.ti.com/.../viddec3test.c

Oh I remember that conversation now. Yes this is same recommendation (building through Yocto). You have three choices -

1. Build omapdrmtest through yocto and then copy all the dependent files and library from yocto build to your application (in your build setup) and then build your application outside Yocto. 
2. Enhance omapdrmtest with your custom application and build your custom application through yocto. You can do your source code changes in local copy of the yocto project. You will need to compile the omapdrmtest if your application is part of that build setup everytime you do changes to your code. You can use below isntructions for building ompadrmtest with your changes and for any incremental build -

              MACHINE=am57xx-evm bitbake omapdrmtest -c cleanal

              MACHINE=am57xx-evm bitbake omapdrmtest --f -c compile

3. Make your own project inside yocto (config, bitbake recipes following omapdrmtest /or strip the omapdrmtest of all the files that you don't need and add your files to it) and build your project through yocto following above build instructions.