[deliverable/linux.git] / arch / s390 / pci / pci_sysfs.c

/*
 * Copyright IBM Corp. 2012
 *
 * Author(s):
 *   Jan Glauber <jang@linux.vnet.ibm.com>
 */

#define KMSG_COMPONENT "zpci"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/kernel.h>
#include <linux/stat.h>
#include <linux/pci.h>

#define zpci_attr(name, fmt, member)					\
static ssize_t name##_show(struct device *dev,				\
			   struct device_attribute *attr, char *buf)	\
{									\
	struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));		\
									\
	return sprintf(buf, fmt, zdev->member);				\
}									\
static DEVICE_ATTR_RO(name)

zpci_attr(function_id, "0x%08x\n", fid);
zpci_attr(function_handle, "0x%08x\n", fh);
zpci_attr(pchid, "0x%04x\n", pchid);
zpci_attr(pfgid, "0x%02x\n", pfgid);
zpci_attr(vfn, "0x%04x\n", vfn);
zpci_attr(pft, "0x%02x\n", pft);
zpci_attr(uid, "0x%x\n", uid);
zpci_attr(segment0, "0x%02x\n", pfip[0]);
zpci_attr(segment1, "0x%02x\n", pfip[1]);
zpci_attr(segment2, "0x%02x\n", pfip[2]);
zpci_attr(segment3, "0x%02x\n", pfip[3]);

static ssize_t recover_store(struct device *dev, struct device_attribute *attr,
			     const char *buf, size_t count)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct zpci_dev *zdev = get_zdev(pdev);
	int ret;

	if (!device_remove_file_self(dev, attr))
		return count;

	pci_stop_and_remove_bus_device(pdev);
	ret = zpci_disable_device(zdev);
	if (ret)
		return ret;

	ret = zpci_enable_device(zdev);
	if (ret)
		return ret;

	pci_rescan_bus(zdev->bus);
	return count;
}
static DEVICE_ATTR_WO(recover);

static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
				struct bin_attribute *attr, char *buf,
				loff_t off, size_t count)
{
	struct device *dev = kobj_to_dev(kobj);
	struct pci_dev *pdev = to_pci_dev(dev);
	struct zpci_dev *zdev = get_zdev(pdev);

	return memory_read_from_buffer(buf, count, &off, zdev->util_str,
				       sizeof(zdev->util_str));
}
static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
static struct bin_attribute *zpci_bin_attrs[] = {
	&bin_attr_util_string,
	NULL,
};

static struct attribute *zpci_dev_attrs[] = {
	&dev_attr_function_id.attr,
	&dev_attr_function_handle.attr,
	&dev_attr_pchid.attr,
	&dev_attr_pfgid.attr,
	&dev_attr_pft.attr,
	&dev_attr_vfn.attr,
	&dev_attr_uid.attr,
	&dev_attr_recover.attr,
	NULL,
};
static struct attribute_group zpci_attr_group = {
	.attrs = zpci_dev_attrs,
	.bin_attrs = zpci_bin_attrs,
};

static struct attribute *pfip_attrs[] = {
	&dev_attr_segment0.attr,
	&dev_attr_segment1.attr,
	&dev_attr_segment2.attr,
	&dev_attr_segment3.attr,
	NULL,
};
static struct attribute_group pfip_attr_group = {
	.name = "pfip",
	.attrs = pfip_attrs,
};

const struct attribute_group *zpci_attr_groups[] = {
	&zpci_attr_group,
	&pfip_attr_group,
	NULL,
};
Commit	Line	Data
1e8da956 JG	1	/*
	2	* Copyright IBM Corp. 2012
	3	*
	4	* Author(s):
	5	* Jan Glauber <jang@linux.vnet.ibm.com>
	6	*/
	7
896cb7e6 GS	8	#define KMSG_COMPONENT "zpci"
896cb7e6 GS	9	#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
1e8da956 JG	10
	11	#include <linux/kernel.h>
	12	#include <linux/stat.h>
	13	#include <linux/pci.h>
	14
b346953d SO	15	#define zpci_attr(name, fmt, member) \
	16	static ssize_t name##_show(struct device *dev, \
	17	struct device_attribute attr, char buf) \
	18	{ \
	19	struct zpci_dev *zdev = get_zdev(to_pci_dev(dev)); \
	20	\
	21	return sprintf(buf, fmt, zdev->member); \
	22	} \
	23	static DEVICE_ATTR_RO(name)
	24
	25	zpci_attr(function_id, "0x%08x\n", fid);
	26	zpci_attr(function_handle, "0x%08x\n", fh);
	27	zpci_attr(pchid, "0x%04x\n", pchid);
	28	zpci_attr(pfgid, "0x%02x\n", pfgid);
ac4995b9 SO	29	zpci_attr(vfn, "0x%04x\n", vfn);
	30	zpci_attr(pft, "0x%02x\n", pft);
	31	zpci_attr(uid, "0x%x\n", uid);
	32	zpci_attr(segment0, "0x%02x\n", pfip[0]);
	33	zpci_attr(segment1, "0x%02x\n", pfip[1]);
	34	zpci_attr(segment2, "0x%02x\n", pfip[2]);
	35	zpci_attr(segment3, "0x%02x\n", pfip[3]);
b346953d SO	36
b346953d SO	37	static ssize_t recover_store(struct device dev, struct device_attribute attr,
0b60f9ea	38	const char *buf, size_t count)
0ff70ec8 SO	39	{
	40	struct pci_dev *pdev = to_pci_dev(dev);
	41	struct zpci_dev *zdev = get_zdev(pdev);
	42	int ret;
	43
0b60f9ea TH	44	if (!device_remove_file_self(dev, attr))
	45	return count;
	46
0ff70ec8 SO	47	pci_stop_and_remove_bus_device(pdev);
	48	ret = zpci_disable_device(zdev);
	49	if (ret)
0b60f9ea	50	return ret;
0ff70ec8 SO	51
	52	ret = zpci_enable_device(zdev);
	53	if (ret)
0b60f9ea	54	return ret;
0ff70ec8 SO	55
0ff70ec8 SO	56	pci_rescan_bus(zdev->bus);
0b60f9ea	57	return count;
0ff70ec8	58	}
b346953d	59	static DEVICE_ATTR_WO(recover);
0ff70ec8	60
ac4995b9 SO	61	static ssize_t util_string_read(struct file filp, struct kobject kobj,
	62	struct bin_attribute attr, char buf,
	63	loff_t off, size_t count)
	64	{
	65	struct device *dev = kobj_to_dev(kobj);
	66	struct pci_dev *pdev = to_pci_dev(dev);
	67	struct zpci_dev *zdev = get_zdev(pdev);
	68
	69	return memory_read_from_buffer(buf, count, &off, zdev->util_str,
	70	sizeof(zdev->util_str));
	71	}
	72	static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
	73	static struct bin_attribute *zpci_bin_attrs[] = {
	74	&bin_attr_util_string,
	75	NULL,
	76	};
	77
93065d04 SO	78	static struct attribute *zpci_dev_attrs[] = {
	79	&dev_attr_function_id.attr,
	80	&dev_attr_function_handle.attr,
	81	&dev_attr_pchid.attr,
	82	&dev_attr_pfgid.attr,
ac4995b9 SO	83	&dev_attr_pft.attr,
	84	&dev_attr_vfn.attr,
	85	&dev_attr_uid.attr,
93065d04 SO	86	&dev_attr_recover.attr,
	87	NULL,
	88	};
	89	static struct attribute_group zpci_attr_group = {
	90	.attrs = zpci_dev_attrs,
ac4995b9 SO	91	.bin_attrs = zpci_bin_attrs,
	92	};
	93
	94	static struct attribute *pfip_attrs[] = {
	95	&dev_attr_segment0.attr,
	96	&dev_attr_segment1.attr,
	97	&dev_attr_segment2.attr,
	98	&dev_attr_segment3.attr,
	99	NULL,
	100	};
	101	static struct attribute_group pfip_attr_group = {
	102	.name = "pfip",
	103	.attrs = pfip_attrs,
93065d04	104	};
ac4995b9	105
93065d04 SO	106	const struct attribute_group *zpci_attr_groups[] = {
93065d04 SO	107	&zpci_attr_group,
ac4995b9	108	&pfip_attr_group,
1e8da956 JG	109	NULL,
1e8da956 JG	110	};