Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2003 Digi International (www.digi.com) |
| 3 | * Scott H Kilau <Scott_Kilau at digi dot com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2, or (at your option) |
| 8 | * any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the |
| 12 | * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 13 | * PURPOSE. See the GNU General Public License for more details. |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | /************************************************************************ |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 17 | * |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 18 | * This file implements the mgmt functionality for the |
| 19 | * Neo and ClassicBoard based product lines. |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 20 | * |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 21 | ************************************************************************ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 22 | */ |
| 23 | #include <linux/kernel.h> |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 24 | #include <linux/ctype.h> |
| 25 | #include <linux/sched.h> /* For jiffies, task states */ |
| 26 | #include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */ |
| 27 | #include <linux/serial_reg.h> |
| 28 | #include <linux/termios.h> |
Iulia Manda | 8dd64ac | 2014-03-11 00:10:12 +0200 | [diff] [blame] | 29 | #include <linux/uaccess.h> /* For copy_from_user/copy_to_user */ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 30 | |
| 31 | #include "dgnc_driver.h" |
| 32 | #include "dgnc_pci.h" |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 33 | #include "dgnc_mgmt.h" |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 34 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 35 | /* Our "in use" variables, to enforce 1 open only */ |
| 36 | static int dgnc_mgmt_in_use[MAXMGMTDEVICES]; |
| 37 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 38 | /* |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 39 | * dgnc_mgmt_open() |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 40 | * |
| 41 | * Open the mgmt/downld/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 42 | */ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 43 | int dgnc_mgmt_open(struct inode *inode, struct file *file) |
| 44 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 45 | unsigned long flags; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 46 | unsigned int minor = iminor(inode); |
| 47 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 48 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 49 | |
| 50 | /* mgmt device */ |
| 51 | if (minor < MAXMGMTDEVICES) { |
| 52 | /* Only allow 1 open at a time on mgmt device */ |
| 53 | if (dgnc_mgmt_in_use[minor]) { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 54 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 55 | return -EBUSY; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 56 | } |
| 57 | dgnc_mgmt_in_use[minor]++; |
Iulia Manda | 1c1dd2a | 2014-03-11 00:08:06 +0200 | [diff] [blame] | 58 | } else { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 59 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 60 | return -ENXIO; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 61 | } |
| 62 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 63 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 64 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 65 | return 0; |
| 66 | } |
| 67 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 68 | /* |
| 69 | * dgnc_mgmt_close() |
| 70 | * |
| 71 | * Open the mgmt/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 72 | */ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 73 | int dgnc_mgmt_close(struct inode *inode, struct file *file) |
| 74 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 75 | unsigned long flags; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 76 | unsigned int minor = iminor(inode); |
| 77 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 78 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 79 | |
| 80 | /* mgmt device */ |
| 81 | if (minor < MAXMGMTDEVICES) { |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 82 | if (dgnc_mgmt_in_use[minor]) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 83 | dgnc_mgmt_in_use[minor] = 0; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 84 | } |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 85 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 86 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 87 | return 0; |
| 88 | } |
| 89 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 90 | /* |
| 91 | * dgnc_mgmt_ioctl() |
| 92 | * |
| 93 | * ioctl the mgmt/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 94 | */ |
Lidza Louina | 62a86e5 | 2013-08-20 14:15:36 -0400 | [diff] [blame] | 95 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 96 | long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 97 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 98 | unsigned long flags; |
Sudip Mukherjee | 6f41825 | 2015-10-04 19:50:13 +0530 | [diff] [blame] | 99 | void __user *uarg = (void __user *)arg; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 100 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 101 | switch (cmd) { |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 102 | case DIGI_GETDD: |
| 103 | { |
| 104 | /* |
| 105 | * This returns the total number of boards |
| 106 | * in the system, as well as driver version |
| 107 | * and has space for a reserved entry |
| 108 | */ |
| 109 | struct digi_dinfo ddi; |
| 110 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 111 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 112 | |
Salva Peiró | 4b61843 | 2015-10-14 17:48:02 +0200 | [diff] [blame] | 113 | memset(&ddi, 0, sizeof(ddi)); |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 114 | ddi.dinfo_nboards = dgnc_num_boards; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 115 | sprintf(ddi.dinfo_version, "%s", DG_PART); |
| 116 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 117 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 118 | |
Iulia Manda | 3393fe9 | 2014-03-10 23:00:03 -0700 | [diff] [blame] | 119 | if (copy_to_user(uarg, &ddi, sizeof(ddi))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 120 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 121 | |
| 122 | break; |
| 123 | } |
| 124 | |
| 125 | case DIGI_GETBD: |
| 126 | { |
| 127 | int brd; |
| 128 | |
| 129 | struct digi_info di; |
| 130 | |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 131 | if (copy_from_user(&brd, uarg, sizeof(int))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 132 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 133 | |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 134 | if (brd < 0 || brd >= dgnc_num_boards) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 135 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 136 | |
| 137 | memset(&di, 0, sizeof(di)); |
| 138 | |
| 139 | di.info_bdnum = brd; |
| 140 | |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 141 | spin_lock_irqsave(&dgnc_board[brd]->bd_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 142 | |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 143 | di.info_bdtype = dgnc_board[brd]->dpatype; |
| 144 | di.info_bdstate = dgnc_board[brd]->dpastatus; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 145 | di.info_ioport = 0; |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 146 | di.info_physaddr = (ulong)dgnc_board[brd]->membase; |
| 147 | di.info_physsize = (ulong)dgnc_board[brd]->membase |
| 148 | - dgnc_board[brd]->membase_end; |
| 149 | if (dgnc_board[brd]->state != BOARD_FAILED) |
| 150 | di.info_nports = dgnc_board[brd]->nasync; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 151 | else |
| 152 | di.info_nports = 0; |
| 153 | |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 154 | spin_unlock_irqrestore(&dgnc_board[brd]->bd_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 155 | |
Iulia Manda | 3393fe9 | 2014-03-10 23:00:03 -0700 | [diff] [blame] | 156 | if (copy_to_user(uarg, &di, sizeof(di))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 157 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 158 | |
| 159 | break; |
| 160 | } |
| 161 | |
| 162 | case DIGI_GET_NI_INFO: |
| 163 | { |
| 164 | struct channel_t *ch; |
| 165 | struct ni_info ni; |
Ebru Akagunduz | 446393e | 2014-10-01 23:04:48 +0300 | [diff] [blame] | 166 | unsigned char mstat = 0; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 167 | uint board = 0; |
| 168 | uint channel = 0; |
| 169 | |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 170 | if (copy_from_user(&ni, uarg, sizeof(ni))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 171 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 172 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 173 | board = ni.board; |
| 174 | channel = ni.channel; |
| 175 | |
| 176 | /* Verify boundaries on board */ |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 177 | if (board >= dgnc_num_boards) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 178 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 179 | |
| 180 | /* Verify boundaries on channel */ |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 181 | if (channel >= dgnc_board[board]->nasync) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 182 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 183 | |
Daeseok Youn | 80e3e24 | 2016-03-23 20:54:36 +0900 | [diff] [blame] | 184 | ch = dgnc_board[board]->channels[channel]; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 185 | |
| 186 | if (!ch || ch->magic != DGNC_CHANNEL_MAGIC) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 187 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 188 | |
| 189 | memset(&ni, 0, sizeof(ni)); |
| 190 | ni.board = board; |
| 191 | ni.channel = channel; |
| 192 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 193 | spin_lock_irqsave(&ch->ch_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 194 | |
Eva Rachel Retuya | 0b7ceaa | 2016-02-24 00:34:56 +0800 | [diff] [blame] | 195 | mstat = ch->ch_mostat | ch->ch_mistat; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 196 | |
| 197 | if (mstat & UART_MCR_DTR) { |
| 198 | ni.mstat |= TIOCM_DTR; |
| 199 | ni.dtr = TIOCM_DTR; |
| 200 | } |
| 201 | if (mstat & UART_MCR_RTS) { |
| 202 | ni.mstat |= TIOCM_RTS; |
| 203 | ni.rts = TIOCM_RTS; |
| 204 | } |
| 205 | if (mstat & UART_MSR_CTS) { |
| 206 | ni.mstat |= TIOCM_CTS; |
| 207 | ni.cts = TIOCM_CTS; |
| 208 | } |
| 209 | if (mstat & UART_MSR_RI) { |
| 210 | ni.mstat |= TIOCM_RI; |
| 211 | ni.ri = TIOCM_RI; |
| 212 | } |
| 213 | if (mstat & UART_MSR_DCD) { |
| 214 | ni.mstat |= TIOCM_CD; |
| 215 | ni.dcd = TIOCM_CD; |
| 216 | } |
| 217 | if (mstat & UART_MSR_DSR) |
| 218 | ni.mstat |= TIOCM_DSR; |
| 219 | |
| 220 | ni.iflag = ch->ch_c_iflag; |
| 221 | ni.oflag = ch->ch_c_oflag; |
| 222 | ni.cflag = ch->ch_c_cflag; |
| 223 | ni.lflag = ch->ch_c_lflag; |
| 224 | |
Iulia Manda | 0469c74 | 2014-03-13 16:17:03 -0700 | [diff] [blame] | 225 | if (ch->ch_digi.digi_flags & CTSPACE || |
| 226 | ch->ch_c_cflag & CRTSCTS) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 227 | ni.hflow = 1; |
| 228 | else |
| 229 | ni.hflow = 0; |
| 230 | |
Iulia Manda | 0469c74 | 2014-03-13 16:17:03 -0700 | [diff] [blame] | 231 | if ((ch->ch_flags & CH_STOPI) || |
| 232 | (ch->ch_flags & CH_FORCED_STOPI)) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 233 | ni.recv_stopped = 1; |
| 234 | else |
| 235 | ni.recv_stopped = 0; |
| 236 | |
| 237 | if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_FORCED_STOP)) |
| 238 | ni.xmit_stopped = 1; |
| 239 | else |
| 240 | ni.xmit_stopped = 0; |
| 241 | |
| 242 | ni.curtx = ch->ch_txcount; |
| 243 | ni.currx = ch->ch_rxcount; |
| 244 | |
| 245 | ni.baud = ch->ch_old_baud; |
| 246 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 247 | spin_unlock_irqrestore(&ch->ch_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 248 | |
| 249 | if (copy_to_user(uarg, &ni, sizeof(ni))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 250 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 251 | |
| 252 | break; |
| 253 | } |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 254 | } |
| 255 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 256 | return 0; |
| 257 | } |