C++ (Cpp) cio_get_console_sch_no Examples

Example #1

File: cio.c Project: a2hojsjsjs/linux

struct subchannel *cio_probe_console(void)
{
	struct subchannel_id schid;
	struct subchannel *sch;
	int sch_no, ret;

	sch_no = cio_get_console_sch_no();
	if (sch_no == -1) {
		pr_warning("No CCW console was found\n");
		return ERR_PTR(-ENODEV);
	}
	init_subchannel_id(&schid);
	schid.sch_no = sch_no;
	sch = css_alloc_subchannel(schid);
	if (IS_ERR(sch))
		return sch;

	lockdep_set_class(sch->lock, &console_sch_key);
	isc_register(CONSOLE_ISC);
	sch->config.isc = CONSOLE_ISC;
	sch->config.intparm = (u32)(addr_t)sch;
	ret = cio_commit_config(sch);
	if (ret) {
		isc_unregister(CONSOLE_ISC);
		put_device(&sch->dev);
		return ERR_PTR(ret);
	}
	console_sch = sch;
	return sch;
}

Example #2

struct subchannel *cio_probe_console(void)
{
	struct subchannel_id schid;
	struct subchannel *sch;
	int sch_no, ret;

	sch_no = cio_get_console_sch_no();
	if (sch_no == -1) {
		pr_warning("No CCW console was found\n");
		return ERR_PTR(-ENODEV);
	}
	init_subchannel_id(&schid);
	schid.sch_no = sch_no;
	sch = css_alloc_subchannel(schid);
	if (IS_ERR(sch))
		return sch;

	lockdep_set_class(sch->lock, &console_sch_key);
	isc_reg

Example #3

File: cio.c Project: AllenDou/linux

struct subchannel *
cio_probe_console(void)
{
	int sch_no, ret;
	struct subchannel_id schid;

	if (xchg(&console_subchannel_in_use, 1) != 0)
		return ERR_PTR(-EBUSY);
	sch_no = cio_get_console_sch_no();
	if (sch_no == -1) {
		console_subchannel_in_use = 0;
		pr_warning("No CCW console was found\n");
		return ERR_PTR(-ENODEV);
	}
	memset(&console_subchannel, 0, sizeof(struct subchannel));
	init_subchannel_id(&schid);
	schid.sch_no = sch_no;
	ret = cio_validate_subchannel(&console_subchannel, schid);
	if (ret) {
		console_subchannel_in_use = 0;
		return ERR_PTR(-ENODEV);
	}

	/*
	 * enable console I/O-interrupt subclass
	 */
	isc_register(CONSOLE_ISC);
	console_subchannel.config.isc = CONSOLE_ISC;
	console_subchannel.config.intparm = (u32)(addr_t)&console_subchannel;
	ret = cio_commit_config(&console_subchannel);
	if (ret) {
		isc_unregister(CONSOLE_ISC);
		console_subchannel_in_use = 0;
		return ERR_PTR(ret);
	}
	return &console_subchannel;
}

Example #4

File: cio.c Project: FatSunHYS/OSCourseDesign

struct subchannel *
cio_probe_console(void)
{
	int sch_no, ret;
	struct subchannel_id schid;

	if (xchg(&console_subchannel_in_use, 1) != 0)
		return ERR_PTR(-EBUSY);
	sch_no = cio_get_console_sch_no();
	if (sch_no == -1) {
		console_subchannel_in_use = 0;
		return ERR_PTR(-ENODEV);
	}
	memset(&console_subchannel, 0, sizeof(struct subchannel));
	init_subchannel_id(&schid);
	schid.sch_no = sch_no;
	ret = cio_validate_subchannel(&console_subchannel, schid);
	if (ret) {
		console_subchannel_in_use = 0;
		return ERR_PTR(-ENODEV);
	}

	/*
	 * enable console I/O-interrupt subclass 7
	 */
	ctl_set_bit(6, 24);
	console_subchannel.schib.pmcw.isc = 7;
	console_subchannel.schib.pmcw.intparm =
		(__u32)(unsigned long)&console_subchannel;
	ret = cio_modify(&console_subchannel);
	if (ret) {
		console_subchannel_in_use = 0;
		return ERR_PTR(ret);
	}
	return &console_subchannel;
}