diff options
Diffstat (limited to 'drivers/staging/dgrp/dgrp_sysfs.c')
| -rw-r--r-- | drivers/staging/dgrp/dgrp_sysfs.c | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/drivers/staging/dgrp/dgrp_sysfs.c b/drivers/staging/dgrp/dgrp_sysfs.c new file mode 100644 index 000000000000..e5a3c88d016e --- /dev/null +++ b/drivers/staging/dgrp/dgrp_sysfs.c @@ -0,0 +1,555 @@ +/* + * Copyright 2004 Digi International (www.digi.com) + * Scott H Kilau <Scott_Kilau at digi dot com> + * + * 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, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the + * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + */ + +#include "dgrp_common.h" + +#include <linux/kernel.h> +#include <linux/version.h> +#include <linux/module.h> +#include <linux/ctype.h> +#include <linux/string.h> +#include <linux/serial_reg.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> + + +#define PORTSERVER_DIVIDEND 1843200 +#define SERIAL_TYPE_NORMAL 1 +#define SERIAL_TYPE_CALLOUT 2 +#define SERIAL_TYPE_XPRINT 3 + + +static struct class *dgrp_class; +static struct device *dgrp_class_nodes_dev; +static struct device *dgrp_class_global_settings_dev; + + +static ssize_t dgrp_class_version_show(struct class *class, + struct class_attribute *attr, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", DIGI_VERSION); +} +static CLASS_ATTR(driver_version, 0400, dgrp_class_version_show, NULL); + + +static ssize_t dgrp_class_register_with_sysfs_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "1\n"); +} +static DEVICE_ATTR(register_with_sysfs, 0400, + dgrp_class_register_with_sysfs_show, NULL); + + +static ssize_t dgrp_class_rawreadok_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", dgrp_rawreadok); +} +static ssize_t dgrp_class_rawreadok_store(struct device *c, + struct device_attribute *attr, + const char *buf, size_t count) +{ + sscanf(buf, "0x%x\n", &dgrp_rawreadok); + return count; +} +static DEVICE_ATTR(rawreadok, 0600, dgrp_class_rawreadok_show, + dgrp_class_rawreadok_store); + + +static ssize_t dgrp_class_pollrate_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", dgrp_poll_tick); +} + +static ssize_t dgrp_class_pollrate_store(struct device *c, + struct device_attribute *attr, + const char *buf, size_t count) +{ + sscanf(buf, "0x%x\n", &dgrp_poll_tick); + return count; +} +static DEVICE_ATTR(pollrate, 0600, dgrp_class_pollrate_show, + dgrp_class_pollrate_store); + +static struct attribute *dgrp_sysfs_global_settings_entries[] = { + &dev_attr_pollrate.attr, + &dev_attr_rawreadok.attr, + &dev_attr_register_with_sysfs.attr, + NULL +}; + + +static struct attribute_group dgrp_global_settings_attribute_group = { + .name = NULL, + .attrs = dgrp_sysfs_global_settings_entries, +}; + + + +void dgrp_create_class_sysfs_files(void) +{ + int ret = 0; + int max_majors = 1U << (32 - MINORBITS); + + dgrp_class = class_create(THIS_MODULE, "digi_realport"); + ret = class_create_file(dgrp_class, &class_attr_driver_version); + + dgrp_class_global_settings_dev = device_create(dgrp_class, NULL, + MKDEV(0, max_majors + 1), NULL, "driver_settings"); + + ret = sysfs_create_group(&dgrp_class_global_settings_dev->kobj, + &dgrp_global_settings_attribute_group); + if (ret) { + pr_alert("%s: failed to create sysfs global settings device attributes.\n", + __func__); + sysfs_remove_group(&dgrp_class_global_settings_dev->kobj, + &dgrp_global_settings_attribute_group); + return; + } + + dgrp_class_nodes_dev = device_create(dgrp_class, NULL, + MKDEV(0, max_majors + 2), NULL, "nodes"); + +} + + +void dgrp_remove_class_sysfs_files(void) +{ + struct nd_struct *nd; + int max_majors = 1U << (32 - MINORBITS); + + list_for_each_entry(nd, &nd_struct_list, list) + dgrp_remove_node_class_sysfs_files(nd); + + sysfs_remove_group(&dgrp_class_global_settings_dev->kobj, + &dgrp_global_settings_attribute_group); + + class_remove_file(dgrp_class, &class_attr_driver_version); + + device_destroy(dgrp_class, MKDEV(0, max_majors + 1)); + device_destroy(dgrp_class, MKDEV(0, max_majors + 2)); + class_destroy(dgrp_class); +} + +static ssize_t dgrp_node_state_show(struct device *c, + struct device_attribute *attr, char *buf) +{ + struct nd_struct *nd; + + if (!c) + return 0; + nd = (struct nd_struct *) dev_get_drvdata(c); + if (!nd) + return 0; + + return snprintf(buf, PAGE_SIZE, "%s\n", ND_STATE_STR(nd->nd_state)); +} + +static DEVICE_ATTR(state, 0600, dgrp_node_state_show, NULL); + +static ssize_t dgrp_node_description_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + struct nd_struct *nd; + + if (!c) + return 0; + nd = (struct nd_struct *) dev_get_drvdata(c); + if (!nd) + return 0; + + if (nd->nd_state == NS_READY && nd->nd_ps_desc) + return snprintf(buf, PAGE_SIZE, "%s\n", nd->nd_ps_desc); + return 0; +} +static DEVICE_ATTR(description_info, 0600, dgrp_node_description_show, NULL); + +static ssize_t dgrp_node_hw_version_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + struct nd_struct *nd; + + if (!c) + return 0; + nd = (struct nd_struct *) dev_get_drvdata(c); + if (!nd) + return 0; + + if (nd->nd_state == NS_READY) + return snprintf(buf, PAGE_SIZE, "%d.%d\n", + (nd->nd_hw_ver >> 8) & 0xff, + nd->nd_hw_ver & 0xff); + + return 0; +} +static DEVICE_ATTR(hw_version_info, 0600, dgrp_node_hw_version_show, NULL); + +static ssize_t dgrp_node_hw_id_show(struct device *c, + struct device_attribute *attr, char *buf) +{ + struct nd_struct *nd; + + if (!c) + return 0; + nd = (struct nd_struct *) dev_get_drvdata(c); + if (!nd) + return 0; + + + if (nd->nd_state == NS_READY) + return snprintf(buf, PAGE_SIZE, "%d\n", nd->nd_hw_id); + return 0; +} +static DEVICE_ATTR(hw_id_info, 0600, dgrp_node_hw_id_show, NULL); + +static ssize_t dgrp_node_sw_version_show(struct device *c, + struct device_attribute *attr, + char *buf) +{ + struct nd_struct *nd; + + if (!c) + return 0; + + nd = (struct nd_struct *) dev_get_drvdata(c); + if (!nd) + return 0; + + if (nd->nd_state == NS_READY) + return snprintf(buf, PAGE_SIZE, "%d.%d\n", + (nd->nd_sw_ver >> 8) & 0xff, + nd->nd_sw_ver & 0xff); + + return 0; +} +static DEVICE_ATTR(sw_version_info, 0600, dgrp_node_sw_version_show, NULL); + + +static struct attribute *dgrp_sysfs_node_entries[] = { + &dev_attr_state.attr, + &dev_attr_description_info.attr, + &dev_attr_hw_version_info.attr, + &dev_attr_hw_id_info.attr, + &dev_attr_sw_version_info.attr, + NULL +}; + + +static struct attribute_group dgrp_node_attribute_group = { + .name = NULL, + .attrs = dgrp_sysfs_node_entries, +}; + + +void dgrp_create_node_class_sysfs_files(struct nd_struct *nd) +{ + int ret; + char name[10]; + + if (nd->nd_ID) + ID_TO_CHAR(nd->nd_ID, name); + else + sprintf(name, "node%ld", nd->nd_major); + + nd->nd_class_dev = device_create(dgrp_class, dgrp_class_nodes_dev, + MKDEV(0, nd->nd_major), NULL, name); + + ret = sysfs_create_group(&nd->nd_class_dev->kobj, + &dgrp_node_attribute_group); + + if (ret) { + pr_alert("%s: failed to create sysfs node device attributes.\n", + __func__); + sysfs_remove_group(&nd->nd_class_dev->kobj, + &dgrp_node_attribute_group); + return; + } + + dev_set_drvdata(nd->nd_class_dev, nd); + +} + + +void dgrp_remove_node_class_sysfs_files(struct nd_struct *nd) +{ + if (nd->nd_class_dev) { + sysfs_remove_group(&nd->nd_class_dev->kobj, + &dgrp_node_attribute_group); + + device_destroy(dgrp_class, MKDEV(0, nd->nd_major)); + nd->nd_class_dev = NULL; + } +} + + + +static ssize_t dgrp_tty_state_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + + return snprintf(buf, PAGE_SIZE, "%s\n", + un->un_open_count ? "Open" : "Closed"); +} +static DEVICE_ATTR(state_info, 0600, dgrp_tty_state_show, NULL); + +static ssize_t dgrp_tty_baud_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%d\n", + un->un_open_count ? (PORTSERVER_DIVIDEND / ch->ch_s_brate) : 0); +} +static DEVICE_ATTR(baud_info, 0400, dgrp_tty_baud_show, NULL); + + +static ssize_t dgrp_tty_msignals_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + + if (ch->ch_open_count) { + return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n", + (ch->ch_s_mlast & DM_RTS) ? "RTS" : "", + (ch->ch_s_mlast & DM_CTS) ? "CTS" : "", + (ch->ch_s_mlast & DM_DTR) ? "DTR" : "", + (ch->ch_s_mlast & DM_DSR) ? "DSR" : "", + (ch->ch_s_mlast & DM_CD) ? "DCD" : "", + (ch->ch_s_mlast & DM_RI) ? "RI" : ""); + } + return 0; +} +static DEVICE_ATTR(msignals_info, 0400, dgrp_tty_msignals_show, NULL); + + +static ssize_t dgrp_tty_iflag_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_s_iflag); +} +static DEVICE_ATTR(iflag_info, 0600, dgrp_tty_iflag_show, NULL); + + +static ssize_t dgrp_tty_cflag_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_s_cflag); +} +static DEVICE_ATTR(cflag_info, 0600, dgrp_tty_cflag_show, NULL); + + +static ssize_t dgrp_tty_oflag_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_s_oflag); +} +static DEVICE_ATTR(oflag_info, 0600, dgrp_tty_oflag_show, NULL); + + +static ssize_t dgrp_tty_digi_flag_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags); +} +static DEVICE_ATTR(digi_flag_info, 0600, dgrp_tty_digi_flag_show, NULL); + + +static ssize_t dgrp_tty_rxcount_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_rxcount); +} +static DEVICE_ATTR(rxcount_info, 0600, dgrp_tty_rxcount_show, NULL); + + +static ssize_t dgrp_tty_txcount_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ch_struct *ch; + struct un_struct *un; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_txcount); +} +static DEVICE_ATTR(txcount_info, 0600, dgrp_tty_txcount_show, NULL); + + +static ssize_t dgrp_tty_name_show(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct nd_struct *nd; + struct ch_struct *ch; + struct un_struct *un; + char name[10]; + + if (!d) + return 0; + un = (struct un_struct *) dev_get_drvdata(d); + if (!un) + return 0; + ch = un->un_ch; + if (!ch) + return 0; + nd = ch->ch_nd; + if (!nd) + return 0; + + ID_TO_CHAR(nd->nd_ID, name); + + return snprintf(buf, PAGE_SIZE, "%s%s%02d\n", + un->un_type == SERIAL_TYPE_XPRINT ? "pr" : "tty", + name, ch->ch_portnum); +} +static DEVICE_ATTR(custom_name, 0600, dgrp_tty_name_show, NULL); + + +static struct attribute *dgrp_sysfs_tty_entries[] = { + &dev_attr_state_info.attr, + &dev_attr_baud_info.attr, + &dev_attr_msignals_info.attr, + &dev_attr_iflag_info.attr, + &dev_attr_cflag_info.attr, + &dev_attr_oflag_info.attr, + &dev_attr_digi_flag_info.attr, + &dev_attr_rxcount_info.attr, + &dev_attr_txcount_info.attr, + &dev_attr_custom_name.attr, + NULL +}; + + +static struct attribute_group dgrp_tty_attribute_group = { + .name = NULL, + .attrs = dgrp_sysfs_tty_entries, +}; + + +void dgrp_create_tty_sysfs(struct un_struct *un, struct device *c) +{ + int ret; + + ret = sysfs_create_group(&c->kobj, &dgrp_tty_attribute_group); + if (ret) { + pr_alert("%s: failed to create sysfs tty device attributes.\n", + __func__); + sysfs_remove_group(&c->kobj, &dgrp_tty_attribute_group); + return; + } + + dev_set_drvdata(c, un); + +} + + +void dgrp_remove_tty_sysfs(struct device *c) +{ + sysfs_remove_group(&c->kobj, &dgrp_tty_attribute_group); +} |