[linux-2.6-block.git] / drivers / rapidio / rio-sysfs.c

/*
 * RapidIO sysfs attributes and support
 *
 * Copyright 2005 MontaVista Software, Inc.
 * Matt Porter <mporter@kernel.crashing.org>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/stat.h>
#include <linux/capability.h>

#include "rio.h"

/* Sysfs support */
#define rio_config_attr(field, format_string)					\
static ssize_t								\
field##_show(struct device *dev, struct device_attribute *attr, char *buf)			\
{									\
	struct rio_dev *rdev = to_rio_dev(dev);				\
									\
	return sprintf(buf, format_string, rdev->field);		\
}									\
static DEVICE_ATTR_RO(field);

rio_config_attr(did, "0x%04x\n");
rio_config_attr(vid, "0x%04x\n");
rio_config_attr(device_rev, "0x%08x\n");
rio_config_attr(asm_did, "0x%04x\n");
rio_config_attr(asm_vid, "0x%04x\n");
rio_config_attr(asm_rev, "0x%04x\n");
rio_config_attr(destid, "0x%04x\n");
rio_config_attr(hopcount, "0x%02x\n");

static ssize_t routes_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);
	char *str = buf;
	int i;

	for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
			i++) {
		if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
			continue;
		str +=
		    sprintf(str, "%04x %02x\n", i,
			    rdev->rswitch->route_table[i]);
	}

	return (str - buf);
}
static DEVICE_ATTR_RO(routes);

static ssize_t lprev_show(struct device *dev,
			  struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);

	return sprintf(buf, "%s\n",
			(rdev->prev) ? rio_name(rdev->prev) : "root");
}
static DEVICE_ATTR_RO(lprev);

static ssize_t lnext_show(struct device *dev,
			  struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);
	char *str = buf;
	int i;

	if (rdev->pef & RIO_PEF_SWITCH) {
		for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
			if (rdev->rswitch->nextdev[i])
				str += sprintf(str, "%s\n",
					rio_name(rdev->rswitch->nextdev[i]));
			else
				str += sprintf(str, "null\n");
		}
	}

	return str - buf;
}
static DEVICE_ATTR_RO(lnext);

static ssize_t modalias_show(struct device *dev,
			     struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);

	return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n",
		       rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did);
}
static DEVICE_ATTR_RO(modalias);

static struct attribute *rio_dev_attrs[] = {
	&dev_attr_did.attr,
	&dev_attr_vid.attr,
	&dev_attr_device_rev.attr,
	&dev_attr_asm_did.attr,
	&dev_attr_asm_vid.attr,
	&dev_attr_asm_rev.attr,
	&dev_attr_lprev.attr,
	&dev_attr_destid.attr,
	&dev_attr_modalias.attr,
	NULL,
};

static const struct attribute_group rio_dev_group = {
	.attrs = rio_dev_attrs,
};

const struct attribute_group *rio_dev_groups[] = {
	&rio_dev_group,
	NULL,
};

static ssize_t
rio_read_config(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
		char *buf, loff_t off, size_t count)
{
	struct rio_dev *dev =
	    to_rio_dev(container_of(kobj, struct device, kobj));
	unsigned int size = 0x100;
	loff_t init_off = off;
	u8 *data = (u8 *) buf;

	/* Several chips lock up trying to read undefined config space */
	if (capable(CAP_SYS_ADMIN))
		size = RIO_MAINT_SPACE_SZ;

	if (off >= size)
		return 0;
	if (off + count > size) {
		size -= off;
		count = size;
	} else {
		size = count;
	}

	if ((off & 1) && size) {
		u8 val;
		rio_read_config_8(dev, off, &val);
		data[off - init_off] = val;
		off++;
		size--;
	}

	if ((off & 3) && size > 2) {
		u16 val;
		rio_read_config_16(dev, off, &val);
		data[off - init_off] = (val >> 8) & 0xff;
		data[off - init_off + 1] = val & 0xff;
		off += 2;
		size -= 2;
	}

	while (size > 3) {
		u32 val;
		rio_read_config_32(dev, off, &val);
		data[off - init_off] = (val >> 24) & 0xff;
		data[off - init_off + 1] = (val >> 16) & 0xff;
		data[off - init_off + 2] = (val >> 8) & 0xff;
		data[off - init_off + 3] = val & 0xff;
		off += 4;
		size -= 4;
	}

	if (size >= 2) {
		u16 val;
		rio_read_config_16(dev, off, &val);
		data[off - init_off] = (val >> 8) & 0xff;
		data[off - init_off + 1] = val & 0xff;
		off += 2;
		size -= 2;
	}

	if (size > 0) {
		u8 val;
		rio_read_config_8(dev, off, &val);
		data[off - init_off] = val;
		off++;
		--size;
	}

	return count;
}

static ssize_t
rio_write_config(struct file *filp, struct kobject *kobj,
		 struct bin_attribute *bin_attr,
		 char *buf, loff_t off, size_t count)
{
	struct rio_dev *dev =
	    to_rio_dev(container_of(kobj, struct device, kobj));
	unsigned int size = count;
	loff_t init_off = off;
	u8 *data = (u8 *) buf;

	if (off >= RIO_MAINT_SPACE_SZ)
		return 0;
	if (off + count > RIO_MAINT_SPACE_SZ) {
		size = RIO_MAINT_SPACE_SZ - off;
		count = size;
	}

	if ((off & 1) && size) {
		rio_write_config_8(dev, off, data[off - init_off]);
		off++;
		size--;
	}

	if ((off & 3) && (size > 2)) {
		u16 val = data[off - init_off + 1];
		val |= (u16) data[off - init_off] << 8;
		rio_write_config_16(dev, off, val);
		off += 2;
		size -= 2;
	}

	while (size > 3) {
		u32 val = data[off - init_off + 3];
		val |= (u32) data[off - init_off + 2] << 8;
		val |= (u32) data[off - init_off + 1] << 16;
		val |= (u32) data[off - init_off] << 24;
		rio_write_config_32(dev, off, val);
		off += 4;
		size -= 4;
	}

	if (size >= 2) {
		u16 val = data[off - init_off + 1];
		val |= (u16) data[off - init_off] << 8;
		rio_write_config_16(dev, off, val);
		off += 2;
		size -= 2;
	}

	if (size) {
		rio_write_config_8(dev, off, data[off - init_off]);
		off++;
		--size;
	}

	return count;
}

static struct bin_attribute rio_config_attr = {
	.attr = {
		 .name = "config",
		 .mode = S_IRUGO | S_IWUSR,
		 },
	.size = RIO_MAINT_SPACE_SZ,
	.read = rio_read_config,
	.write = rio_write_config,
};

/**
 * rio_create_sysfs_dev_files - create RIO specific sysfs files
 * @rdev: device whose entries should be created
 *
 * Create files when @rdev is added to sysfs.
 */
int rio_create_sysfs_dev_files(struct rio_dev *rdev)
{
	int err = 0;

	err = device_create_bin_file(&rdev->dev, &rio_config_attr);

	if (!err && (rdev->pef & RIO_PEF_SWITCH)) {
		err |= device_create_file(&rdev->dev, &dev_attr_routes);
		err |= device_create_file(&rdev->dev, &dev_attr_lnext);
		err |= device_create_file(&rdev->dev, &dev_attr_hopcount);
	}

	if (err)
		pr_warning("RIO: Failed to create attribute file(s) for %s\n",
			   rio_name(rdev));

	return err;
}

/**
 * rio_remove_sysfs_dev_files - cleanup RIO specific sysfs files
 * @rdev: device whose entries we should free
 *
 * Cleanup when @rdev is removed from sysfs.
 */
void rio_remove_sysfs_dev_files(struct rio_dev *rdev)
{
	device_remove_bin_file(&rdev->dev, &rio_config_attr);
	if (rdev->pef & RIO_PEF_SWITCH) {
		device_remove_file(&rdev->dev, &dev_attr_routes);
		device_remove_file(&rdev->dev, &dev_attr_lnext);
		device_remove_file(&rdev->dev, &dev_attr_hopcount);
	}
}

static ssize_t bus_scan_store(struct bus_type *bus, const char *buf,
				size_t count)
{
	long val;
	int rc;

	if (kstrtol(buf, 0, &val) < 0)
		return -EINVAL;

	if (val == RIO_MPORT_ANY) {
		rc = rio_init_mports();
		goto exit;
	}

	if (val < 0 || val >= RIO_MAX_MPORTS)
		return -EINVAL;

	rc = rio_mport_scan((int)val);
exit:
	if (!rc)
		rc = count;

	return rc;
}
static BUS_ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store);

static struct attribute *rio_bus_attrs[] = {
	&bus_attr_scan.attr,
	NULL,
};

static const struct attribute_group rio_bus_group = {
	.attrs = rio_bus_attrs,
};

const struct attribute_group *rio_bus_groups[] = {
	&rio_bus_group,
	NULL,
};

static ssize_t
port_destid_show(struct device *dev, struct device_attribute *attr,
		 char *buf)
{
	struct rio_mport *mport = to_rio_mport(dev);

	if (mport)
		return sprintf(buf, "0x%04x\n", mport->host_deviceid);
	else
		return -ENODEV;
}
static DEVICE_ATTR_RO(port_destid);

static ssize_t sys_size_show(struct device *dev, struct device_attribute *attr,
			   char *buf)
{
	struct rio_mport *mport = to_rio_mport(dev);

	if (mport)
		return sprintf(buf, "%u\n", mport->sys_size);
	else
		return -ENODEV;
}
static DEVICE_ATTR_RO(sys_size);

static struct attribute *rio_mport_attrs[] = {
	&dev_attr_port_destid.attr,
	&dev_attr_sys_size.attr,
	NULL,
};

static const struct attribute_group rio_mport_group = {
	.attrs = rio_mport_attrs,
};

const struct attribute_group *rio_mport_groups[] = {
	&rio_mport_group,
	NULL,
};
Commit	Line	Data
394b701c MP	1	/*
	2	* RapidIO sysfs attributes and support
	3	*
	4	* Copyright 2005 MontaVista Software, Inc.
	5	* Matt Porter <mporter@kernel.crashing.org>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*/
	12
394b701c MP	13	#include <linux/kernel.h>
	14	#include <linux/rio.h>
	15	#include <linux/rio_drv.h>
	16	#include <linux/stat.h>
388b78ad	17	#include <linux/capability.h>
394b701c MP	18
	19	#include "rio.h"
	20
	21	/* Sysfs support */
	22	#define rio_config_attr(field, format_string) \
	23	static ssize_t \
6978bbc0	24	field##_show(struct device dev, struct device_attribute attr, char *buf) \
394b701c MP	25	{ \
	26	struct rio_dev *rdev = to_rio_dev(dev); \
	27	\
	28	return sprintf(buf, format_string, rdev->field); \
	29	} \
6d39c80b	30	static DEVICE_ATTR_RO(field);
394b701c MP	31
	32	rio_config_attr(did, "0x%04x\n");
	33	rio_config_attr(vid, "0x%04x\n");
	34	rio_config_attr(device_rev, "0x%08x\n");
	35	rio_config_attr(asm_did, "0x%04x\n");
	36	rio_config_attr(asm_vid, "0x%04x\n");
	37	rio_config_attr(asm_rev, "0x%04x\n");
cd8b974f AB	38	rio_config_attr(destid, "0x%04x\n");
cd8b974f AB	39	rio_config_attr(hopcount, "0x%02x\n");
394b701c	40
6978bbc0	41	static ssize_t routes_show(struct device dev, struct device_attribute attr, char *buf)
394b701c MP	42	{
	43	struct rio_dev *rdev = to_rio_dev(dev);
	44	char *str = buf;
	45	int i;
	46
e0423236 ZW	47	for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
e0423236 ZW	48	i++) {
394b701c MP	49	if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
	50	continue;
	51	str +=
	52	sprintf(str, "%04x %02x\n", i,
	53	rdev->rswitch->route_table[i]);
	54	}
	55
394b701c MP	56	return (str - buf);
394b701c MP	57	}
6d39c80b	58	static DEVICE_ATTR_RO(routes);
394b701c	59
cd8b974f AB	60	static ssize_t lprev_show(struct device *dev,
	61	struct device_attribute attr, char buf)
	62	{
	63	struct rio_dev *rdev = to_rio_dev(dev);
	64
	65	return sprintf(buf, "%s\n",
	66	(rdev->prev) ? rio_name(rdev->prev) : "root");
	67	}
6d39c80b	68	static DEVICE_ATTR_RO(lprev);
cd8b974f AB	69
	70	static ssize_t lnext_show(struct device *dev,
	71	struct device_attribute attr, char buf)
	72	{
	73	struct rio_dev *rdev = to_rio_dev(dev);
	74	char *str = buf;
	75	int i;
	76
	77	if (rdev->pef & RIO_PEF_SWITCH) {
	78	for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
	79	if (rdev->rswitch->nextdev[i])
	80	str += sprintf(str, "%s\n",
	81	rio_name(rdev->rswitch->nextdev[i]));
	82	else
	83	str += sprintf(str, "null\n");
	84	}
	85	}
	86
	87	return str - buf;
	88	}
6d39c80b	89	static DEVICE_ATTR_RO(lnext);
cd8b974f	90
3bdbb62f AB	91	static ssize_t modalias_show(struct device *dev,
	92	struct device_attribute attr, char buf)
	93	{
	94	struct rio_dev *rdev = to_rio_dev(dev);
	95
	96	return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n",
	97	rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did);
	98	}
6d39c80b GKH	99	static DEVICE_ATTR_RO(modalias);
	100
	101	static struct attribute *rio_dev_attrs[] = {
	102	&dev_attr_did.attr,
	103	&dev_attr_vid.attr,
	104	&dev_attr_device_rev.attr,
	105	&dev_attr_asm_did.attr,
	106	&dev_attr_asm_vid.attr,
	107	&dev_attr_asm_rev.attr,
	108	&dev_attr_lprev.attr,
	109	&dev_attr_destid.attr,
	110	&dev_attr_modalias.attr,
	111	NULL,
	112	};
3bdbb62f	113
6d39c80b GKH	114	static const struct attribute_group rio_dev_group = {
6d39c80b GKH	115	.attrs = rio_dev_attrs,
394b701c MP	116	};
394b701c MP	117
6d39c80b GKH	118	const struct attribute_group *rio_dev_groups[] = {
	119	&rio_dev_group,
	120	NULL,
	121	};
ac38d723	122
394b701c	123	static ssize_t
2c3c8bea CW	124	rio_read_config(struct file filp, struct kobject kobj,
2c3c8bea CW	125	struct bin_attribute *bin_attr,
91a69029	126	char *buf, loff_t off, size_t count)
394b701c MP	127	{
	128	struct rio_dev *dev =
	129	to_rio_dev(container_of(kobj, struct device, kobj));
	130	unsigned int size = 0x100;
	131	loff_t init_off = off;
	132	u8 data = (u8 ) buf;
	133
	134	/* Several chips lock up trying to read undefined config space */
	135	if (capable(CAP_SYS_ADMIN))
fe41947e	136	size = RIO_MAINT_SPACE_SZ;
394b701c	137
fe41947e	138	if (off >= size)
394b701c MP	139	return 0;
	140	if (off + count > size) {
	141	size -= off;
	142	count = size;
	143	} else {
	144	size = count;
	145	}
	146
	147	if ((off & 1) && size) {
	148	u8 val;
	149	rio_read_config_8(dev, off, &val);
	150	data[off - init_off] = val;
	151	off++;
	152	size--;
	153	}
	154
	155	if ((off & 3) && size > 2) {
	156	u16 val;
	157	rio_read_config_16(dev, off, &val);
	158	data[off - init_off] = (val >> 8) & 0xff;
	159	data[off - init_off + 1] = val & 0xff;
	160	off += 2;
	161	size -= 2;
	162	}
	163
	164	while (size > 3) {
	165	u32 val;
	166	rio_read_config_32(dev, off, &val);
	167	data[off - init_off] = (val >> 24) & 0xff;
	168	data[off - init_off + 1] = (val >> 16) & 0xff;
	169	data[off - init_off + 2] = (val >> 8) & 0xff;
	170	data[off - init_off + 3] = val & 0xff;
	171	off += 4;
	172	size -= 4;
	173	}
	174
	175	if (size >= 2) {
	176	u16 val;
	177	rio_read_config_16(dev, off, &val);
	178	data[off - init_off] = (val >> 8) & 0xff;
	179	data[off - init_off + 1] = val & 0xff;
	180	off += 2;
	181	size -= 2;
	182	}
	183
	184	if (size > 0) {
	185	u8 val;
	186	rio_read_config_8(dev, off, &val);
	187	data[off - init_off] = val;
	188	off++;
	189	--size;
	190	}
	191
	192	return count;
	193	}
	194
	195	static ssize_t
2c3c8bea CW	196	rio_write_config(struct file filp, struct kobject kobj,
2c3c8bea CW	197	struct bin_attribute *bin_attr,
91a69029	198	char *buf, loff_t off, size_t count)
394b701c MP	199	{
	200	struct rio_dev *dev =
	201	to_rio_dev(container_of(kobj, struct device, kobj));
	202	unsigned int size = count;
	203	loff_t init_off = off;
	204	u8 data = (u8 ) buf;
	205
fe41947e	206	if (off >= RIO_MAINT_SPACE_SZ)
394b701c	207	return 0;
fe41947e AB	208	if (off + count > RIO_MAINT_SPACE_SZ) {
fe41947e AB	209	size = RIO_MAINT_SPACE_SZ - off;
394b701c MP	210	count = size;
	211	}
	212
	213	if ((off & 1) && size) {
	214	rio_write_config_8(dev, off, data[off - init_off]);
	215	off++;
	216	size--;
	217	}
	218
	219	if ((off & 3) && (size > 2)) {
	220	u16 val = data[off - init_off + 1];
	221	val \|= (u16) data[off - init_off] << 8;
	222	rio_write_config_16(dev, off, val);
	223	off += 2;
	224	size -= 2;
	225	}
	226
	227	while (size > 3) {
	228	u32 val = data[off - init_off + 3];
	229	val \|= (u32) data[off - init_off + 2] << 8;
	230	val \|= (u32) data[off - init_off + 1] << 16;
	231	val \|= (u32) data[off - init_off] << 24;
	232	rio_write_config_32(dev, off, val);
	233	off += 4;
	234	size -= 4;
	235	}
	236
	237	if (size >= 2) {
	238	u16 val = data[off - init_off + 1];
	239	val \|= (u16) data[off - init_off] << 8;
	240	rio_write_config_16(dev, off, val);
	241	off += 2;
	242	size -= 2;
	243	}
	244
	245	if (size) {
	246	rio_write_config_8(dev, off, data[off - init_off]);
	247	off++;
	248	--size;
	249	}
	250
	251	return count;
	252	}
	253
	254	static struct bin_attribute rio_config_attr = {
	255	.attr = {
	256	.name = "config",
	257	.mode = S_IRUGO \| S_IWUSR,
394b701c	258	},
fe41947e	259	.size = RIO_MAINT_SPACE_SZ,
394b701c MP	260	.read = rio_read_config,
	261	.write = rio_write_config,
	262	};
	263
	264	/**
	265	* rio_create_sysfs_dev_files - create RIO specific sysfs files
	266	* @rdev: device whose entries should be created
	267	*
	268	* Create files when @rdev is added to sysfs.
	269	*/
	270	int rio_create_sysfs_dev_files(struct rio_dev *rdev)
	271	{
5f28c520	272	int err = 0;
394b701c	273
ac38d723 AB	274	err = device_create_bin_file(&rdev->dev, &rio_config_attr);
ac38d723 AB	275
ded05782	276	if (!err && (rdev->pef & RIO_PEF_SWITCH)) {
cd8b974f AB	277	err \|= device_create_file(&rdev->dev, &dev_attr_routes);
	278	err \|= device_create_file(&rdev->dev, &dev_attr_lnext);
	279	err \|= device_create_file(&rdev->dev, &dev_attr_hopcount);
ac38d723 AB	280	}
	281
	282	if (err)
	283	pr_warning("RIO: Failed to create attribute file(s) for %s\n",
	284	rio_name(rdev));
5f28c520 YL	285
5f28c520 YL	286	return err;
394b701c MP	287	}
	288
	289	/**
	290	* rio_remove_sysfs_dev_files - cleanup RIO specific sysfs files
	291	* @rdev: device whose entries we should free
	292	*
	293	* Cleanup when @rdev is removed from sysfs.
	294	*/
	295	void rio_remove_sysfs_dev_files(struct rio_dev *rdev)
	296	{
ac38d723	297	device_remove_bin_file(&rdev->dev, &rio_config_attr);
ded05782	298	if (rdev->pef & RIO_PEF_SWITCH) {
ac38d723	299	device_remove_file(&rdev->dev, &dev_attr_routes);
cd8b974f AB	300	device_remove_file(&rdev->dev, &dev_attr_lnext);
cd8b974f AB	301	device_remove_file(&rdev->dev, &dev_attr_hopcount);
ac38d723	302	}
394b701c	303	}
bc8fcfea AB	304
	305	static ssize_t bus_scan_store(struct bus_type bus, const char buf,
	306	size_t count)
	307	{
	308	long val;
bc8fcfea AB	309	int rc;
	310
	311	if (kstrtol(buf, 0, &val) < 0)
	312	return -EINVAL;
	313
	314	if (val == RIO_MPORT_ANY) {
	315	rc = rio_init_mports();
	316	goto exit;
	317	}
	318
	319	if (val < 0 \|\| val >= RIO_MAX_MPORTS)
	320	return -EINVAL;
	321
9edbc30b	322	rc = rio_mport_scan((int)val);
bc8fcfea AB	323	exit:
	324	if (!rc)
	325	rc = count;
	326
	327	return rc;
	328	}
ed1d2da2	329	static BUS_ATTR(scan, (S_IWUSR\|S_IWGRP), NULL, bus_scan_store);
bc8fcfea	330
ed1d2da2 GKH	331	static struct attribute *rio_bus_attrs[] = {
	332	&bus_attr_scan.attr,
	333	NULL,
	334	};
	335
	336	static const struct attribute_group rio_bus_group = {
	337	.attrs = rio_bus_attrs,
	338	};
	339
	340	const struct attribute_group *rio_bus_groups[] = {
	341	&rio_bus_group,
	342	NULL,
bc8fcfea	343	};
2aaf308b AB	344
	345	static ssize_t
	346	port_destid_show(struct device dev, struct device_attribute attr,
	347	char *buf)
	348	{
	349	struct rio_mport *mport = to_rio_mport(dev);
	350
	351	if (mport)
	352	return sprintf(buf, "0x%04x\n", mport->host_deviceid);
	353	else
	354	return -ENODEV;
	355	}
	356	static DEVICE_ATTR_RO(port_destid);
	357
	358	static ssize_t sys_size_show(struct device dev, struct device_attribute attr,
	359	char *buf)
	360	{
	361	struct rio_mport *mport = to_rio_mport(dev);
	362
	363	if (mport)
	364	return sprintf(buf, "%u\n", mport->sys_size);
	365	else
	366	return -ENODEV;
	367	}
	368	static DEVICE_ATTR_RO(sys_size);
	369
	370	static struct attribute *rio_mport_attrs[] = {
	371	&dev_attr_port_destid.attr,
	372	&dev_attr_sys_size.attr,
	373	NULL,
	374	};
	375
	376	static const struct attribute_group rio_mport_group = {
	377	.attrs = rio_mport_attrs,
	378	};
	379
	380	const struct attribute_group *rio_mport_groups[] = {
	381	&rio_mport_group,
	382	NULL,
	383	};