/*
 * umcshctl.c -- userland driver for the umcs.c verification harness
 * (/dev/umcsh0).  Runs scenarios and prints results.
 *
 * Build: cc -O -Wall -o umcshctl umcshctl.c
 * Run:   ./umcshctl <scenario#> [arg [arg2]]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <err.h>
#include "umcsh.h"

static void
dump(const struct umcsh_req *r)
{
	printf("  rc=%u numports=%u divisor=%u clk=0x%02x attached=%u "
	    "rd=%u wr=%u oob_dword=0x%08x\n",
	    r->r_rc, r->r_numports, r->r_divisor, r->r_clk, r->r_attached,
	    r->r_rd_cnt, r->r_wr_cnt, r->r_oob_dword);
	if (r->r_msg[0])
		printf("  msg: %s\n", r->r_msg);
}

int
main(int argc, char **argv)
{
	struct umcsh_req r;
	int fd;

	if (argc < 2)
		errx(1, "usage: %s <scenario> [arg [arg2]]", argv[0]);
	bzero(&r, sizeof(r));
	r.scenario = (uint32_t)strtoul(argv[1], NULL, 0);
	if (argc > 2)
		r.arg = (uint32_t)strtoul(argv[2], NULL, 0);
	if (argc > 3)
		r.arg2 = (uint32_t)strtoul(argv[3], NULL, 0);

	fd = open("/dev/umcsh0", O_RDWR);
	if (fd < 0)
		err(1, "open /dev/umcsh0");
	/*
	 * Scenario return codes are DATA (EINVAL from pre_param(0), ENXIO
	 * from a rejected attach, EPERM from the rate=0 guard...); never
	 * abort on them.
	 */
	ioctl(fd, UMCSH_IOC, &r);
	dump(&r);
	return (0);
}