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 | |
| 35 | |
| 36 | /* Our "in use" variables, to enforce 1 open only */ |
| 37 | static int dgnc_mgmt_in_use[MAXMGMTDEVICES]; |
| 38 | |
| 39 | |
| 40 | /* |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 41 | * dgnc_mgmt_open() |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 42 | * |
| 43 | * Open the mgmt/downld/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 44 | */ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 45 | int dgnc_mgmt_open(struct inode *inode, struct file *file) |
| 46 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 47 | unsigned long flags; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 48 | unsigned int minor = iminor(inode); |
| 49 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 50 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 51 | |
| 52 | /* mgmt device */ |
| 53 | if (minor < MAXMGMTDEVICES) { |
| 54 | /* Only allow 1 open at a time on mgmt device */ |
| 55 | if (dgnc_mgmt_in_use[minor]) { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 56 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 57 | return -EBUSY; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 58 | } |
| 59 | dgnc_mgmt_in_use[minor]++; |
Iulia Manda | 1c1dd2a | 2014-03-11 00:08:06 +0200 | [diff] [blame] | 60 | } else { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 61 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 62 | return -ENXIO; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 63 | } |
| 64 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 65 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 66 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | |
| 71 | /* |
| 72 | * dgnc_mgmt_close() |
| 73 | * |
| 74 | * Open the mgmt/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 75 | */ |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 76 | int dgnc_mgmt_close(struct inode *inode, struct file *file) |
| 77 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 78 | unsigned long flags; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 79 | unsigned int minor = iminor(inode); |
| 80 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 81 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 82 | |
| 83 | /* mgmt device */ |
| 84 | if (minor < MAXMGMTDEVICES) { |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 85 | if (dgnc_mgmt_in_use[minor]) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 86 | dgnc_mgmt_in_use[minor] = 0; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 87 | } |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 88 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 89 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | |
| 94 | /* |
| 95 | * dgnc_mgmt_ioctl() |
| 96 | * |
| 97 | * ioctl the mgmt/dpa device |
Lidza Louina | 0986cda | 2013-08-21 11:08:05 -0400 | [diff] [blame] | 98 | */ |
Lidza Louina | 62a86e5 | 2013-08-20 14:15:36 -0400 | [diff] [blame] | 99 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 100 | long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 101 | { |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 102 | unsigned long flags; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 103 | void __user *uarg = (void __user *) arg; |
| 104 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 105 | switch (cmd) { |
| 106 | |
| 107 | case DIGI_GETDD: |
| 108 | { |
| 109 | /* |
| 110 | * This returns the total number of boards |
| 111 | * in the system, as well as driver version |
| 112 | * and has space for a reserved entry |
| 113 | */ |
| 114 | struct digi_dinfo ddi; |
| 115 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 116 | spin_lock_irqsave(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 117 | |
| 118 | ddi.dinfo_nboards = dgnc_NumBoards; |
| 119 | sprintf(ddi.dinfo_version, "%s", DG_PART); |
| 120 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 121 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 122 | |
Iulia Manda | 3393fe9 | 2014-03-10 23:00:03 -0700 | [diff] [blame] | 123 | if (copy_to_user(uarg, &ddi, sizeof(ddi))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 124 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 125 | |
| 126 | break; |
| 127 | } |
| 128 | |
| 129 | case DIGI_GETBD: |
| 130 | { |
| 131 | int brd; |
| 132 | |
| 133 | struct digi_info di; |
| 134 | |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 135 | if (copy_from_user(&brd, uarg, sizeof(int))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 136 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 137 | |
Dan Carpenter | cb1185a | 2015-03-10 10:39:42 +0300 | [diff] [blame] | 138 | if (brd < 0 || brd >= dgnc_NumBoards) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 139 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 140 | |
| 141 | memset(&di, 0, sizeof(di)); |
| 142 | |
| 143 | di.info_bdnum = brd; |
| 144 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 145 | spin_lock_irqsave(&dgnc_Board[brd]->bd_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 146 | |
| 147 | di.info_bdtype = dgnc_Board[brd]->dpatype; |
| 148 | di.info_bdstate = dgnc_Board[brd]->dpastatus; |
| 149 | di.info_ioport = 0; |
| 150 | di.info_physaddr = (ulong) dgnc_Board[brd]->membase; |
| 151 | di.info_physsize = (ulong) dgnc_Board[brd]->membase - dgnc_Board[brd]->membase_end; |
| 152 | if (dgnc_Board[brd]->state != BOARD_FAILED) |
| 153 | di.info_nports = dgnc_Board[brd]->nasync; |
| 154 | else |
| 155 | di.info_nports = 0; |
| 156 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 157 | spin_unlock_irqrestore(&dgnc_Board[brd]->bd_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 158 | |
Iulia Manda | 3393fe9 | 2014-03-10 23:00:03 -0700 | [diff] [blame] | 159 | if (copy_to_user(uarg, &di, sizeof(di))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 160 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 161 | |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | case DIGI_GET_NI_INFO: |
| 166 | { |
| 167 | struct channel_t *ch; |
| 168 | struct ni_info ni; |
Ebru Akagunduz | 446393e | 2014-10-01 23:04:48 +0300 | [diff] [blame] | 169 | unsigned char mstat = 0; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 170 | uint board = 0; |
| 171 | uint channel = 0; |
| 172 | |
Iulia Manda | 969fbc8 | 2014-03-11 00:09:11 +0200 | [diff] [blame] | 173 | if (copy_from_user(&ni, uarg, sizeof(ni))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 174 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 175 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 176 | board = ni.board; |
| 177 | channel = ni.channel; |
| 178 | |
| 179 | /* Verify boundaries on board */ |
Dan Carpenter | 4bef52f | 2015-03-12 20:24:31 +0300 | [diff] [blame] | 180 | if (board >= dgnc_NumBoards) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 181 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 182 | |
| 183 | /* Verify boundaries on channel */ |
Dan Carpenter | 4bef52f | 2015-03-12 20:24:31 +0300 | [diff] [blame] | 184 | if (channel >= dgnc_Board[board]->nasync) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 185 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 186 | |
| 187 | ch = dgnc_Board[board]->channels[channel]; |
| 188 | |
| 189 | if (!ch || ch->magic != DGNC_CHANNEL_MAGIC) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 190 | return -ENODEV; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 191 | |
| 192 | memset(&ni, 0, sizeof(ni)); |
| 193 | ni.board = board; |
| 194 | ni.channel = channel; |
| 195 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 196 | spin_lock_irqsave(&ch->ch_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 197 | |
| 198 | mstat = (ch->ch_mostat | ch->ch_mistat); |
| 199 | |
| 200 | if (mstat & UART_MCR_DTR) { |
| 201 | ni.mstat |= TIOCM_DTR; |
| 202 | ni.dtr = TIOCM_DTR; |
| 203 | } |
| 204 | if (mstat & UART_MCR_RTS) { |
| 205 | ni.mstat |= TIOCM_RTS; |
| 206 | ni.rts = TIOCM_RTS; |
| 207 | } |
| 208 | if (mstat & UART_MSR_CTS) { |
| 209 | ni.mstat |= TIOCM_CTS; |
| 210 | ni.cts = TIOCM_CTS; |
| 211 | } |
| 212 | if (mstat & UART_MSR_RI) { |
| 213 | ni.mstat |= TIOCM_RI; |
| 214 | ni.ri = TIOCM_RI; |
| 215 | } |
| 216 | if (mstat & UART_MSR_DCD) { |
| 217 | ni.mstat |= TIOCM_CD; |
| 218 | ni.dcd = TIOCM_CD; |
| 219 | } |
| 220 | if (mstat & UART_MSR_DSR) |
| 221 | ni.mstat |= TIOCM_DSR; |
| 222 | |
| 223 | ni.iflag = ch->ch_c_iflag; |
| 224 | ni.oflag = ch->ch_c_oflag; |
| 225 | ni.cflag = ch->ch_c_cflag; |
| 226 | ni.lflag = ch->ch_c_lflag; |
| 227 | |
Iulia Manda | 0469c74 | 2014-03-13 16:17:03 -0700 | [diff] [blame] | 228 | if (ch->ch_digi.digi_flags & CTSPACE || |
| 229 | ch->ch_c_cflag & CRTSCTS) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 230 | ni.hflow = 1; |
| 231 | else |
| 232 | ni.hflow = 0; |
| 233 | |
Iulia Manda | 0469c74 | 2014-03-13 16:17:03 -0700 | [diff] [blame] | 234 | if ((ch->ch_flags & CH_STOPI) || |
| 235 | (ch->ch_flags & CH_FORCED_STOPI)) |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 236 | ni.recv_stopped = 1; |
| 237 | else |
| 238 | ni.recv_stopped = 0; |
| 239 | |
| 240 | if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_FORCED_STOP)) |
| 241 | ni.xmit_stopped = 1; |
| 242 | else |
| 243 | ni.xmit_stopped = 0; |
| 244 | |
| 245 | ni.curtx = ch->ch_txcount; |
| 246 | ni.currx = ch->ch_rxcount; |
| 247 | |
| 248 | ni.baud = ch->ch_old_baud; |
| 249 | |
Roberta Dobrescu | 9a03d7c | 2014-09-26 23:58:36 +0300 | [diff] [blame] | 250 | spin_unlock_irqrestore(&ch->ch_lock, flags); |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 251 | |
| 252 | if (copy_to_user(uarg, &ni, sizeof(ni))) |
Lidza Louina | 8f90ef8 | 2013-09-09 15:01:23 -0400 | [diff] [blame] | 253 | return -EFAULT; |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 254 | |
| 255 | break; |
| 256 | } |
| 257 | |
| 258 | |
| 259 | } |
| 260 | |
Lidza Louina | 0b99d58 | 2013-08-01 17:00:20 -0400 | [diff] [blame] | 261 | return 0; |
| 262 | } |