--- /dev/null
+/*
+ * 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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/serial_reg.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+
+#include "dgnc_driver.h"
+#include "dgnc_mgmt.h"
+
+
+static ssize_t dgnc_driver_version_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
+}
+static DRIVER_ATTR(version, S_IRUSR, dgnc_driver_version_show, NULL);
+
+
+static ssize_t dgnc_driver_boards_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", dgnc_NumBoards);
+}
+static DRIVER_ATTR(boards, S_IRUSR, dgnc_driver_boards_show, NULL);
+
+
+static ssize_t dgnc_driver_maxboards_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
+}
+static DRIVER_ATTR(maxboards, S_IRUSR, dgnc_driver_maxboards_show, NULL);
+
+
+static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick);
+}
+
+static ssize_t dgnc_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+ int ret;
+
+ ret = sscanf(buf, "%d\n", &dgnc_poll_tick);
+ if (ret != 1)
+ return -EINVAL;
+ return count;
+}
+static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgnc_driver_pollrate_show, dgnc_driver_pollrate_store);
+
+
+void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
+{
+ int rc = 0;
+ struct device_driver *driverfs = &dgnc_driver->driver;
+
+ rc |= driver_create_file(driverfs, &driver_attr_version);
+ rc |= driver_create_file(driverfs, &driver_attr_boards);
+ rc |= driver_create_file(driverfs, &driver_attr_maxboards);
+ rc |= driver_create_file(driverfs, &driver_attr_pollrate);
+ if (rc)
+ pr_err("DGNC: sysfs driver_create_file failed!\n");
+}
+
+
+void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
+{
+ struct device_driver *driverfs = &dgnc_driver->driver;
+
+ driver_remove_file(driverfs, &driver_attr_version);
+ driver_remove_file(driverfs, &driver_attr_boards);
+ driver_remove_file(driverfs, &driver_attr_maxboards);
+ driver_remove_file(driverfs, &driver_attr_pollrate);
+}
+
+
+#define DGNC_VERIFY_BOARD(p, bd) \
+ do { \
+ if (!p) \
+ return 0; \
+ \
+ bd = dev_get_drvdata(p); \
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC) \
+ return 0; \
+ if (bd->state != BOARD_READY) \
+ return 0; \
+ } while (0)
+
+
+
+static ssize_t dgnc_vpd_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ count += sprintf(buf + count, "\n 0 1 2 3 4 5 6 7 8 9 A B C D E F");
+ for (i = 0; i < 0x40 * 2; i++) {
+ if (!(i % 16))
+ count += sprintf(buf + count, "\n%04X ", i * 2);
+ count += sprintf(buf + count, "%02X ", bd->vpd[i]);
+ }
+ count += sprintf(buf + count, "\n");
+
+ return count;
+}
+static DEVICE_ATTR(vpd, S_IRUSR, dgnc_vpd_show, NULL);
+
+static ssize_t dgnc_serial_number_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ if (bd->serial_num[0] == '\0')
+ count += sprintf(buf + count, "<UNKNOWN>\n");
+ else
+ count += sprintf(buf + count, "%s\n", bd->serial_num);
+
+ return count;
+}
+static DEVICE_ATTR(serial_number, S_IRUSR, dgnc_serial_number_show, NULL);
+
+
+static ssize_t dgnc_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %s\n", bd->channels[i]->ch_portnum,
+ bd->channels[i]->ch_open_count ? "Open" : "Closed");
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_state, S_IRUSR, dgnc_ports_state_show, NULL);
+
+
+static ssize_t dgnc_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_old_baud);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_baud, S_IRUSR, dgnc_ports_baud_show, NULL);
+
+
+static ssize_t dgnc_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ if (bd->channels[i]->ch_open_count) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
+ (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+ (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : "");
+ } else {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d\n", bd->channels[i]->ch_portnum);
+ }
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_msignals, S_IRUSR, dgnc_ports_msignals_show, NULL);
+
+
+static ssize_t dgnc_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_iflag, S_IRUSR, dgnc_ports_iflag_show, NULL);
+
+
+static ssize_t dgnc_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_cflag, S_IRUSR, dgnc_ports_cflag_show, NULL);
+
+
+static ssize_t dgnc_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_oflag, S_IRUSR, dgnc_ports_oflag_show, NULL);
+
+
+static ssize_t dgnc_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_lflag, S_IRUSR, dgnc_ports_lflag_show, NULL);
+
+
+static ssize_t dgnc_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgnc_ports_digi_flag_show, NULL);
+
+
+static ssize_t dgnc_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgnc_ports_rxcount_show, NULL);
+
+
+static ssize_t dgnc_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ int count = 0;
+ int i = 0;
+
+ DGNC_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_txcount, S_IRUSR, dgnc_ports_txcount_show, NULL);
+
+
+/* this function creates the sys files that will export each signal status
+ * to sysfs each value will be put in a separate filename
+ */
+void dgnc_create_ports_sysfiles(struct dgnc_board *bd)
+{
+ int rc = 0;
+
+ dev_set_drvdata(&bd->pdev->dev, bd);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_vpd);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_serial_number);
+ if (rc)
+ dev_err(&bd->pdev->dev, "dgnc: sysfs device_create_file failed!\n");
+}
+
+
+/* removes all the sys files created for that port */
+void dgnc_remove_ports_sysfiles(struct dgnc_board *bd)
+{
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_vpd);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_serial_number);
+}
+
+
+static ssize_t dgnc_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
+}
+static DEVICE_ATTR(state, S_IRUSR, dgnc_tty_state_show, NULL);
+
+
+static ssize_t dgnc_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_old_baud);
+}
+static DEVICE_ATTR(baud, S_IRUSR, dgnc_tty_baud_show, NULL);
+
+
+static ssize_t dgnc_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ if (ch->ch_open_count) {
+ return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
+ (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+ (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+ (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+ (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+ (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+ (ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
+ }
+ return 0;
+}
+static DEVICE_ATTR(msignals, S_IRUSR, dgnc_tty_msignals_show, NULL);
+
+
+static ssize_t dgnc_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
+}
+static DEVICE_ATTR(iflag, S_IRUSR, dgnc_tty_iflag_show, NULL);
+
+
+static ssize_t dgnc_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
+}
+static DEVICE_ATTR(cflag, S_IRUSR, dgnc_tty_cflag_show, NULL);
+
+
+static ssize_t dgnc_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
+}
+static DEVICE_ATTR(oflag, S_IRUSR, dgnc_tty_oflag_show, NULL);
+
+
+static ssize_t dgnc_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
+}
+static DEVICE_ATTR(lflag, S_IRUSR, dgnc_tty_lflag_show, NULL);
+
+
+static ssize_t dgnc_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
+}
+static DEVICE_ATTR(digi_flag, S_IRUSR, dgnc_tty_digi_flag_show, NULL);
+
+
+static ssize_t dgnc_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
+}
+static DEVICE_ATTR(rxcount, S_IRUSR, dgnc_tty_rxcount_show, NULL);
+
+
+static ssize_t dgnc_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
+}
+static DEVICE_ATTR(txcount, S_IRUSR, dgnc_tty_txcount_show, NULL);
+
+
+static ssize_t dgnc_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct dgnc_board *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return 0;
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGNC_UNIT_MAGIC)
+ return 0;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
+ return 0;
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return 0;
+ if (bd->state != BOARD_READY)
+ return 0;
+
+ return snprintf(buf, PAGE_SIZE, "%sn%d%c\n",
+ (un->un_type == DGNC_PRINT) ? "pr" : "tty",
+ bd->boardnum + 1, 'a' + ch->ch_portnum);
+}
+static DEVICE_ATTR(custom_name, S_IRUSR, dgnc_tty_name_show, NULL);
+
+
+static struct attribute *dgnc_sysfs_tty_entries[] = {
+ &dev_attr_state.attr,
+ &dev_attr_baud.attr,
+ &dev_attr_msignals.attr,
+ &dev_attr_iflag.attr,
+ &dev_attr_cflag.attr,
+ &dev_attr_oflag.attr,
+ &dev_attr_lflag.attr,
+ &dev_attr_digi_flag.attr,
+ &dev_attr_rxcount.attr,
+ &dev_attr_txcount.attr,
+ &dev_attr_custom_name.attr,
+ NULL
+};
+
+
+static struct attribute_group dgnc_tty_attribute_group = {
+ .name = NULL,
+ .attrs = dgnc_sysfs_tty_entries,
+};
+
+
+void dgnc_create_tty_sysfs(struct un_t *un, struct device *c)
+{
+ int ret;
+
+ ret = sysfs_create_group(&c->kobj, &dgnc_tty_attribute_group);
+ if (ret) {
+ dev_err(c, "dgnc: failed to create sysfs tty device attributes.\n");
+ sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
+ return;
+ }
+
+ dev_set_drvdata(c, un);
+
+}
+
+
+void dgnc_remove_tty_sysfs(struct device *c)
+{
+ sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
+}
+
Code Review / kvmfornfv.git / blobdiff