diff options
Diffstat (limited to 'drivers/rapidio/rio-sysfs.c')
| -rw-r--r-- | drivers/rapidio/rio-sysfs.c | 179 |
1 files changed, 111 insertions, 68 deletions
diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c index 9331be646dc3..0949c869b2f1 100644 --- a/drivers/rapidio/rio-sysfs.c +++ b/drivers/rapidio/rio-sysfs.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * 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> @@ -27,6 +23,7 @@ field##_show(struct device *dev, struct device_attribute *attr, char *buf) \ \ 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"); @@ -54,6 +51,7 @@ static ssize_t routes_show(struct device *dev, struct device_attribute *attr, ch return (str - buf); } +static DEVICE_ATTR_RO(routes); static ssize_t lprev_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -63,6 +61,7 @@ static ssize_t lprev_show(struct device *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) @@ -83,6 +82,7 @@ static ssize_t lnext_show(struct device *dev, return str - buf; } +static DEVICE_ATTR_RO(lnext); static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -92,31 +92,32 @@ static ssize_t modalias_show(struct device *dev, return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n", rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did); } - -struct device_attribute rio_dev_attrs[] = { - __ATTR_RO(did), - __ATTR_RO(vid), - __ATTR_RO(device_rev), - __ATTR_RO(asm_did), - __ATTR_RO(asm_vid), - __ATTR_RO(asm_rev), - __ATTR_RO(lprev), - __ATTR_RO(destid), - __ATTR_RO(modalias), - __ATTR_NULL, +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, + + /* Switch-only attributes */ + &dev_attr_routes.attr, + &dev_attr_lnext.attr, + &dev_attr_hopcount.attr, + NULL, }; -static DEVICE_ATTR(routes, S_IRUGO, routes_show, NULL); -static DEVICE_ATTR(lnext, S_IRUGO, lnext_show, NULL); -static DEVICE_ATTR(hopcount, S_IRUGO, hopcount_show, NULL); - static ssize_t rio_read_config(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, + const 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)); + struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj)); unsigned int size = 0x100; loff_t init_off = off; u8 *data = (u8 *) buf; @@ -184,11 +185,10 @@ rio_read_config(struct file *filp, struct kobject *kobj, static ssize_t rio_write_config(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, + const 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)); + struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj)); unsigned int size = count; loff_t init_off = off; u8 *data = (u8 *) buf; @@ -241,7 +241,7 @@ rio_write_config(struct file *filp, struct kobject *kobj, return count; } -static struct bin_attribute rio_config_attr = { +static const struct bin_attribute rio_config_attr = { .attr = { .name = "config", .mode = S_IRUGO | S_IWUSR, @@ -251,49 +251,42 @@ static struct bin_attribute rio_config_attr = { .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); +static const struct bin_attribute *const rio_dev_bin_attrs[] = { + &rio_config_attr, + NULL, +}; - 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); +static umode_t rio_dev_is_attr_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + struct rio_dev *rdev = to_rio_dev(kobj_to_dev(kobj)); + umode_t mode = attr->mode; + + if (!(rdev->pef & RIO_PEF_SWITCH) && + (attr == &dev_attr_routes.attr || + attr == &dev_attr_lnext.attr || + attr == &dev_attr_hopcount.attr)) { + /* + * Hide switch-specific attributes for a non-switch device. + */ + mode = 0; } - if (err) - pr_warning("RIO: Failed to create attribute file(s) for %s\n", - rio_name(rdev)); - - return err; + return mode; } -/** - * 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 const struct attribute_group rio_dev_group = { + .attrs = rio_dev_attrs, + .is_visible = rio_dev_is_attr_visible, + .bin_attrs = rio_dev_bin_attrs, +}; + +const struct attribute_group *rio_dev_groups[] = { + &rio_dev_group, + NULL, +}; -static ssize_t bus_scan_store(struct bus_type *bus, const char *buf, - size_t count) +static ssize_t scan_store(const struct bus_type *bus, const char *buf, size_t count) { long val; int rc; @@ -316,8 +309,58 @@ exit: return rc; } +static BUS_ATTR_WO(scan); + +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, +}; -struct bus_attribute rio_bus_attrs[] = { - __ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store), - __ATTR_NULL +const struct attribute_group *rio_mport_groups[] = { + &rio_mport_group, + NULL, }; |