Пример #1
0
static int my_cmd_demo(int argc, char **argv)
{
	char *usage[] = { "set   load demo (1 | 2 | 3)",
		"get   print current demo configuration",
		0
	};

	if (check_cmd(argc, "demo", usage))	// check for existing arguments
		return -1;

	if (strcmp("get", argv[0]) == 0) {
		if (check_argc(argc, 1, 1, ""))	// check # of arguments
			return -1;

		// get demo configuration
		xil_printf("demo configuration %d\n", get_demo());

	} else if (strcmp("set", argv[0]) == 0) {
		if (check_argc(argc, 2, 2, "demo set ID"))	// check # of args: 2 required
			return -1;

		// set demo configuration
		unsigned long val = wsh_extract_val(argv[1]);	// extract numeric value

		if ((val < 1) || (val > 3)) {
			print_unknown_arg(argv[1]);
			return -1;
		}

		set_demo(val);
		xil_printf("selecting demo %d\n", get_demo());

	} else {
		print_unknown_cmd(argv[0]);
		return -1;
	}
	return 0;
}
Пример #2
0
int cmd_freq_set(int argc, char **argv)
{
	extern char *optarg;
	extern int optind, opterr, optopt;
	int ret = 0, cont = 1;
	int double_parm = 0, related = 0, policychange = 0;
	unsigned long freq = 0;
	char gov[20];
	unsigned int cpu;

	struct cpufreq_policy new_pol = {
		.min = 0,
		.max = 0,
		.governor = NULL,
	};

	/* parameter parsing */
	do {
		ret = getopt_long(argc, argv, "d:u:g:f:hr", set_opts, NULL);
		switch (ret) {
		case '?':
			print_unknown_arg();
			return -EINVAL;
		case 'h':
			freq_set_help();
			return 0;
		case -1:
			cont = 0;
			break;
		case 'r':
			if (related)
				double_parm++;
			related++;
			break;
		case 'd':
			if (new_pol.min)
				double_parm++;
			policychange++;
			new_pol.min = string_to_frequency(optarg);
			if (new_pol.min == 0) {
				print_unknown_arg();
				return -EINVAL;
			}
			break;
		case 'u':
			if (new_pol.max)
				double_parm++;
			policychange++;
			new_pol.max = string_to_frequency(optarg);
			if (new_pol.max == 0) {
				print_unknown_arg();
				return -EINVAL;
			}
			break;
		case 'f':
			if (freq)
				double_parm++;
			freq = string_to_frequency(optarg);
			if (freq == 0) {
				print_unknown_arg();
				return -EINVAL;
			}
			break;
		case 'g':
			if (new_pol.governor)
				double_parm++;
			policychange++;
			if ((strlen(optarg) < 3) || (strlen(optarg) > 18)) {
				print_unknown_arg();
				return -EINVAL;
			}
			if ((sscanf(optarg, "%s", gov)) != 1) {
				print_unknown_arg();
				return -EINVAL;
			}
			new_pol.governor = gov;
			break;
		}
	} while (cont);

	/* parameter checking */
	if (double_parm) {
		printf("the same parameter was passed more than once\n");
		return -EINVAL;
	}

	if (freq && policychange) {
		printf(_("the -f/--freq parameter cannot be combined with -d/--min, -u/--max or\n"
				"-g/--governor parameters\n"));
		return -EINVAL;
	}

	if (!freq && !policychange) {
		printf(_("At least one parameter out of -f/--freq, -d/--min, -u/--max, and\n"
				"-g/--governor must be passed\n"));
		return -EINVAL;
	}

	/* Default is: set all CPUs */
	if (bitmask_isallclear(cpus_chosen))
		bitmask_setall(cpus_chosen);

	/* Also set frequency settings for related CPUs if -r is passed */
	if (related) {
		for (cpu = bitmask_first(cpus_chosen);
		     cpu <= bitmask_last(cpus_chosen); cpu++) {
			struct cpufreq_affected_cpus *cpus;

			if (!bitmask_isbitset(cpus_chosen, cpu) ||
			    cpufreq_cpu_exists(cpu))
				continue;

			cpus = cpufreq_get_related_cpus(cpu);
			if (!cpus)
				break;
			while (cpus->next) {
				bitmask_setbit(cpus_chosen, cpus->cpu);
				cpus = cpus->next;
			}
			cpufreq_put_related_cpus(cpus);
		}
	}


	/* loop over CPUs */
	for (cpu = bitmask_first(cpus_chosen);
	     cpu <= bitmask_last(cpus_chosen); cpu++) {

		if (!bitmask_isbitset(cpus_chosen, cpu) ||
		    cpufreq_cpu_exists(cpu))
			continue;

		printf(_("Setting cpu: %d\n"), cpu);
		ret = do_one_cpu(cpu, &new_pol, freq, policychange);
		if (ret)
			break;
	}

	if (ret)
		print_error();

	return ret;
}