test_afu.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libcxl.h"

typedef struct
{
	__u64 size;
	void *stripe1;
	void *stripe2;
	void *parity;
	__u64 done;
} parity_request;


int main(int argc, char *argv[])
{
	struct cxl_afu_h *afu;

	parity_request *example;
	size_t size = 128, alignment = 128;


	afu = cxl_afu_open_dev("/dev/cxl/afu0.0d");
	if(!afu)
	{
		printf("Failed to open AFU: %m\n");
		return 1;
	}

	example = aligned_alloc(alignment, sizeof(*example));
	example->size = size;
	example->stripe1 = aligned_alloc(alignment, size);
	example->stripe2 = aligned_alloc(alignment, size);
	example->parity = aligned_alloc(alignment, size);

	memcpy(example->stripe1,
	       "asfb190jwqsefx0amxAqa1nlkaf78sa0g&0ha8dngj3t21078fnajl38n32j3np2"
	       "x3t8wefiankxkfmgm ncmbqx8ehn2jkaeubgfbuapwnjxkg09f0w9es80872981",
	       size);
	memcpy(example->stripe2,
	       "\x35\x1b\x07\x16\x11\x50\x43\x4a\x04\x1e\x1e\x00\x46\x08\x42\x0e"
	       "\x1d\x1d\x33\x51\x11\x50\x1c\x05\x1f\x18\x47\x17\x6c\x1b\x08\x43"
	       "\x47\x4f\x43\x48\x04\x40\x05\x0d\x13\x06\x4a\x54\x45\x59\x51\x43"
	       "\x18\x2f\x49\x0c\x4a\x09\x4b\x48\x0b\x50\x46\x03\x5d\x09\x50\x46"
	       "\x17\x13\x07\x5d\x12\x4b\x46\x20\x46\x0a\x4b\x19\x07\x15\x02\x47"
	       "\x01\x49\x05\x06\x4d\x16\x1e\x58\x4b\x00\x0d\x4e\x46\x02\x02\x12"
	       "\x45\x07\x17\x09\x08\x0b\x1b\x06\x50\x18\x00\x4a\x0b\x04\x0a\x55"
	       "\x19\x14\x55\x16\x55\x45\x14\x5d\x51\x4a\x17\x41\x56\x57\x5f",
	       size);
	example->done = 0;

	printf("[example structure\n");
	printf("  example: %p\n", example);
	printf("  example->size: %llu\n", example->size);
	printf("  example->stripe1: %p\n", example->stripe1);
	printf("  example->stripe2: %p\n", example->stripe2);
	printf("  example->parity: %p\n", example->parity);
	printf("  &(example->done): %p\n", &(example->done));

	cxl_afu_attach(afu, (__u64)example);
	printf("Attached to AFU\n");

	printf("Waiting for completion by AFU\n");
	while(!example->done){
		sleep(1);
	}

	printf("PARITY:\n%s\n", (char *)example->parity);

	printf("Releasing AFU\n");
	cxl_afu_free(afu);

	return 0;
}