Greg Kroah-Hartman | e3b3d0f | 2017-11-06 18:11:51 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /*****************************************************************************/ |
| 3 | /* |
| 4 | * moxa.c -- MOXA Intellio family multiport serial driver. |
| 5 | * |
Jiri Slaby | b9705b60 | 2008-04-30 00:53:48 -0700 | [diff] [blame] | 6 | * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). |
| 7 | * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * This code is loosely based on the Linux serial driver, written by |
| 10 | * Linus Torvalds, Theodore T'so and others. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * MOXA Intellio Series Driver |
| 15 | * for : LINUX |
| 16 | * date : 1999/1/7 |
| 17 | * version : 5.1 |
| 18 | */ |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/module.h> |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/mm.h> |
| 23 | #include <linux/ioport.h> |
| 24 | #include <linux/errno.h> |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 25 | #include <linux/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/signal.h> |
| 27 | #include <linux/sched.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/tty.h> |
| 31 | #include <linux/tty_flip.h> |
| 32 | #include <linux/major.h> |
| 33 | #include <linux/string.h> |
| 34 | #include <linux/fcntl.h> |
| 35 | #include <linux/ptrace.h> |
| 36 | #include <linux/serial.h> |
| 37 | #include <linux/tty_driver.h> |
| 38 | #include <linux/delay.h> |
| 39 | #include <linux/pci.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/bitops.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 42 | #include <linux/slab.h> |
Manuel Zerpies | 5a3c6b251 | 2011-06-16 14:07:22 +0200 | [diff] [blame] | 43 | #include <linux/ratelimit.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/io.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 46 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Jiri Slaby | b55c8aa | 2021-09-14 11:08:23 +0200 | [diff] [blame] | 48 | #define MOXA 0x400 |
| 49 | #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ |
| 50 | #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ |
| 51 | #define MOXA_GETDATACOUNT (MOXA + 23) |
| 52 | #define MOXA_GET_IOQUEUE (MOXA + 27) |
| 53 | #define MOXA_FLUSH_QUEUE (MOXA + 28) |
| 54 | #define MOXA_GETMSTATUS (MOXA + 65) |
| 55 | |
| 56 | /* |
| 57 | * System Configuration |
| 58 | */ |
| 59 | |
| 60 | #define Magic_code 0x404 |
| 61 | |
| 62 | /* |
| 63 | * for C218 BIOS initialization |
| 64 | */ |
| 65 | #define C218_ConfBase 0x800 |
| 66 | #define C218_status (C218_ConfBase + 0) /* BIOS running status */ |
| 67 | #define C218_diag (C218_ConfBase + 2) /* diagnostic status */ |
| 68 | #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ |
| 69 | #define C218DLoad_len (C218_ConfBase + 6) /* WORD */ |
| 70 | #define C218check_sum (C218_ConfBase + 8) /* BYTE */ |
| 71 | #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ |
| 72 | #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ |
| 73 | #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ |
| 74 | #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ |
| 75 | #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ |
| 76 | |
| 77 | #define C218_LoadBuf 0x0F00 |
| 78 | #define C218_KeyCode 0x218 |
| 79 | #define CP204J_KeyCode 0x204 |
| 80 | |
| 81 | /* |
| 82 | * for C320 BIOS initialization |
| 83 | */ |
| 84 | #define C320_ConfBase 0x800 |
| 85 | #define C320_LoadBuf 0x0f00 |
| 86 | #define STS_init 0x05 /* for C320_status */ |
| 87 | |
| 88 | #define C320_status C320_ConfBase + 0 /* BIOS running status */ |
| 89 | #define C320_diag C320_ConfBase + 2 /* diagnostic status */ |
| 90 | #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ |
| 91 | #define C320DLoad_len C320_ConfBase + 6 /* WORD */ |
| 92 | #define C320check_sum C320_ConfBase + 8 /* WORD */ |
| 93 | #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ |
| 94 | #define C320bapi_len C320_ConfBase + 0x0c /* WORD */ |
| 95 | #define C320UART_no C320_ConfBase + 0x0e /* WORD */ |
| 96 | |
| 97 | #define C320_KeyCode 0x320 |
| 98 | |
| 99 | #define FixPage_addr 0x0000 /* starting addr of static page */ |
| 100 | #define DynPage_addr 0x2000 /* starting addr of dynamic page */ |
| 101 | #define C218_start 0x3000 /* starting addr of C218 BIOS prg */ |
| 102 | #define Control_reg 0x1ff0 /* select page and reset control */ |
| 103 | #define HW_reset 0x80 |
| 104 | |
| 105 | /* |
| 106 | * Function Codes |
| 107 | */ |
| 108 | #define FC_CardReset 0x80 |
| 109 | #define FC_ChannelReset 1 /* C320 firmware not supported */ |
| 110 | #define FC_EnableCH 2 |
| 111 | #define FC_DisableCH 3 |
| 112 | #define FC_SetParam 4 |
| 113 | #define FC_SetMode 5 |
| 114 | #define FC_SetRate 6 |
| 115 | #define FC_LineControl 7 |
| 116 | #define FC_LineStatus 8 |
| 117 | #define FC_XmitControl 9 |
| 118 | #define FC_FlushQueue 10 |
| 119 | #define FC_SendBreak 11 |
| 120 | #define FC_StopBreak 12 |
| 121 | #define FC_LoopbackON 13 |
| 122 | #define FC_LoopbackOFF 14 |
| 123 | #define FC_ClrIrqTable 15 |
| 124 | #define FC_SendXon 16 |
| 125 | #define FC_SetTermIrq 17 /* C320 firmware not supported */ |
| 126 | #define FC_SetCntIrq 18 /* C320 firmware not supported */ |
| 127 | #define FC_SetBreakIrq 19 |
| 128 | #define FC_SetLineIrq 20 |
| 129 | #define FC_SetFlowCtl 21 |
| 130 | #define FC_GenIrq 22 |
| 131 | #define FC_InCD180 23 |
| 132 | #define FC_OutCD180 24 |
| 133 | #define FC_InUARTreg 23 |
| 134 | #define FC_OutUARTreg 24 |
| 135 | #define FC_SetXonXoff 25 |
| 136 | #define FC_OutCD180CCR 26 |
| 137 | #define FC_ExtIQueue 27 |
| 138 | #define FC_ExtOQueue 28 |
| 139 | #define FC_ClrLineIrq 29 |
| 140 | #define FC_HWFlowCtl 30 |
| 141 | #define FC_GetClockRate 35 |
| 142 | #define FC_SetBaud 36 |
| 143 | #define FC_SetDataMode 41 |
| 144 | #define FC_GetCCSR 43 |
| 145 | #define FC_GetDataError 45 |
| 146 | #define FC_RxControl 50 |
| 147 | #define FC_ImmSend 51 |
| 148 | #define FC_SetXonState 52 |
| 149 | #define FC_SetXoffState 53 |
| 150 | #define FC_SetRxFIFOTrig 54 |
| 151 | #define FC_SetTxFIFOCnt 55 |
| 152 | #define FC_UnixRate 56 |
| 153 | #define FC_UnixResetTimer 57 |
| 154 | |
| 155 | #define RxFIFOTrig1 0 |
| 156 | #define RxFIFOTrig4 1 |
| 157 | #define RxFIFOTrig8 2 |
| 158 | #define RxFIFOTrig14 3 |
| 159 | |
| 160 | /* |
| 161 | * Dual-Ported RAM |
| 162 | */ |
| 163 | #define DRAM_global 0 |
| 164 | #define INT_data (DRAM_global + 0) |
| 165 | #define Config_base (DRAM_global + 0x108) |
| 166 | |
| 167 | #define IRQindex (INT_data + 0) |
| 168 | #define IRQpending (INT_data + 4) |
| 169 | #define IRQtable (INT_data + 8) |
| 170 | |
| 171 | /* |
| 172 | * Interrupt Status |
| 173 | */ |
| 174 | #define IntrRx 0x01 /* receiver data O.K. */ |
| 175 | #define IntrTx 0x02 /* transmit buffer empty */ |
| 176 | #define IntrFunc 0x04 /* function complete */ |
| 177 | #define IntrBreak 0x08 /* received break */ |
| 178 | #define IntrLine 0x10 /* line status change |
| 179 | for transmitter */ |
| 180 | #define IntrIntr 0x20 /* received INTR code */ |
| 181 | #define IntrQuit 0x40 /* received QUIT code */ |
| 182 | #define IntrEOF 0x80 /* received EOF code */ |
| 183 | |
| 184 | #define IntrRxTrigger 0x100 /* rx data count reach trigger value */ |
| 185 | #define IntrTxTrigger 0x200 /* tx data count below trigger value */ |
| 186 | |
| 187 | #define Magic_no (Config_base + 0) |
| 188 | #define Card_model_no (Config_base + 2) |
| 189 | #define Total_ports (Config_base + 4) |
| 190 | #define Module_cnt (Config_base + 8) |
| 191 | #define Module_no (Config_base + 10) |
| 192 | #define Timer_10ms (Config_base + 14) |
| 193 | #define Disable_IRQ (Config_base + 20) |
| 194 | #define TMS320_PORT1 (Config_base + 22) |
| 195 | #define TMS320_PORT2 (Config_base + 24) |
| 196 | #define TMS320_CLOCK (Config_base + 26) |
| 197 | |
| 198 | /* |
| 199 | * DATA BUFFER in DRAM |
| 200 | */ |
| 201 | #define Extern_table 0x400 /* Base address of the external table |
| 202 | (24 words * 64) total 3K bytes |
| 203 | (24 words * 128) total 6K bytes */ |
| 204 | #define Extern_size 0x60 /* 96 bytes */ |
| 205 | #define RXrptr 0x00 /* read pointer for RX buffer */ |
| 206 | #define RXwptr 0x02 /* write pointer for RX buffer */ |
| 207 | #define TXrptr 0x04 /* read pointer for TX buffer */ |
| 208 | #define TXwptr 0x06 /* write pointer for TX buffer */ |
| 209 | #define HostStat 0x08 /* IRQ flag and general flag */ |
| 210 | #define FlagStat 0x0A |
| 211 | #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ |
| 212 | /* x x x x | | | | */ |
| 213 | /* | | | + CTS flow */ |
| 214 | /* | | +--- RTS flow */ |
| 215 | /* | +------ TX Xon/Xoff */ |
| 216 | /* +--------- RX Xon/Xoff */ |
| 217 | #define Break_cnt 0x0E /* received break count */ |
| 218 | #define CD180TXirq 0x10 /* if non-0: enable TX irq */ |
| 219 | #define RX_mask 0x12 |
| 220 | #define TX_mask 0x14 |
| 221 | #define Ofs_rxb 0x16 |
| 222 | #define Ofs_txb 0x18 |
| 223 | #define Page_rxb 0x1A |
| 224 | #define Page_txb 0x1C |
| 225 | #define EndPage_rxb 0x1E |
| 226 | #define EndPage_txb 0x20 |
| 227 | #define Data_error 0x22 |
| 228 | #define RxTrigger 0x28 |
| 229 | #define TxTrigger 0x2a |
| 230 | |
| 231 | #define rRXwptr 0x34 |
| 232 | #define Low_water 0x36 |
| 233 | |
| 234 | #define FuncCode 0x40 |
| 235 | #define FuncArg 0x42 |
| 236 | #define FuncArg1 0x44 |
| 237 | |
| 238 | #define C218rx_size 0x2000 /* 8K bytes */ |
| 239 | #define C218tx_size 0x8000 /* 32K bytes */ |
| 240 | |
| 241 | #define C218rx_mask (C218rx_size - 1) |
| 242 | #define C218tx_mask (C218tx_size - 1) |
| 243 | |
| 244 | #define C320p8rx_size 0x2000 |
| 245 | #define C320p8tx_size 0x8000 |
| 246 | #define C320p8rx_mask (C320p8rx_size - 1) |
| 247 | #define C320p8tx_mask (C320p8tx_size - 1) |
| 248 | |
| 249 | #define C320p16rx_size 0x2000 |
| 250 | #define C320p16tx_size 0x4000 |
| 251 | #define C320p16rx_mask (C320p16rx_size - 1) |
| 252 | #define C320p16tx_mask (C320p16tx_size - 1) |
| 253 | |
| 254 | #define C320p24rx_size 0x2000 |
| 255 | #define C320p24tx_size 0x2000 |
| 256 | #define C320p24rx_mask (C320p24rx_size - 1) |
| 257 | #define C320p24tx_mask (C320p24tx_size - 1) |
| 258 | |
| 259 | #define C320p32rx_size 0x1000 |
| 260 | #define C320p32tx_size 0x1000 |
| 261 | #define C320p32rx_mask (C320p32rx_size - 1) |
| 262 | #define C320p32tx_mask (C320p32tx_size - 1) |
| 263 | |
| 264 | #define Page_size 0x2000U |
| 265 | #define Page_mask (Page_size - 1) |
| 266 | #define C218rx_spage 3 |
| 267 | #define C218tx_spage 4 |
| 268 | #define C218rx_pageno 1 |
| 269 | #define C218tx_pageno 4 |
| 270 | #define C218buf_pageno 5 |
| 271 | |
| 272 | #define C320p8rx_spage 3 |
| 273 | #define C320p8tx_spage 4 |
| 274 | #define C320p8rx_pgno 1 |
| 275 | #define C320p8tx_pgno 4 |
| 276 | #define C320p8buf_pgno 5 |
| 277 | |
| 278 | #define C320p16rx_spage 3 |
| 279 | #define C320p16tx_spage 4 |
| 280 | #define C320p16rx_pgno 1 |
| 281 | #define C320p16tx_pgno 2 |
| 282 | #define C320p16buf_pgno 3 |
| 283 | |
| 284 | #define C320p24rx_spage 3 |
| 285 | #define C320p24tx_spage 4 |
| 286 | #define C320p24rx_pgno 1 |
| 287 | #define C320p24tx_pgno 1 |
| 288 | #define C320p24buf_pgno 2 |
| 289 | |
| 290 | #define C320p32rx_spage 3 |
| 291 | #define C320p32tx_ofs C320p32rx_size |
| 292 | #define C320p32tx_spage 3 |
| 293 | #define C320p32buf_pgno 1 |
| 294 | |
| 295 | /* |
| 296 | * Host Status |
| 297 | */ |
| 298 | #define WakeupRx 0x01 |
| 299 | #define WakeupTx 0x02 |
| 300 | #define WakeupBreak 0x08 |
| 301 | #define WakeupLine 0x10 |
| 302 | #define WakeupIntr 0x20 |
| 303 | #define WakeupQuit 0x40 |
| 304 | #define WakeupEOF 0x80 /* used in VTIME control */ |
| 305 | #define WakeupRxTrigger 0x100 |
| 306 | #define WakeupTxTrigger 0x200 |
| 307 | /* |
| 308 | * Flag status |
| 309 | */ |
| 310 | #define Rx_over 0x01 |
| 311 | #define Xoff_state 0x02 |
| 312 | #define Tx_flowOff 0x04 |
| 313 | #define Tx_enable 0x08 |
| 314 | #define CTS_state 0x10 |
| 315 | #define DSR_state 0x20 |
| 316 | #define DCD_state 0x80 |
| 317 | /* |
| 318 | * FlowControl |
| 319 | */ |
| 320 | #define CTS_FlowCtl 1 |
| 321 | #define RTS_FlowCtl 2 |
| 322 | #define Tx_FlowCtl 4 |
| 323 | #define Rx_FlowCtl 8 |
| 324 | #define IXM_IXANY 0x10 |
| 325 | |
| 326 | #define LowWater 128 |
| 327 | |
| 328 | #define DTR_ON 1 |
| 329 | #define RTS_ON 2 |
| 330 | #define CTS_ON 1 |
| 331 | #define DSR_ON 2 |
| 332 | #define DCD_ON 8 |
| 333 | |
| 334 | /* mode definition */ |
| 335 | #define MX_CS8 0x03 |
| 336 | #define MX_CS7 0x02 |
| 337 | #define MX_CS6 0x01 |
| 338 | #define MX_CS5 0x00 |
| 339 | |
| 340 | #define MX_STOP1 0x00 |
| 341 | #define MX_STOP15 0x04 |
| 342 | #define MX_STOP2 0x08 |
| 343 | |
| 344 | #define MX_PARNONE 0x00 |
| 345 | #define MX_PAREVEN 0x40 |
| 346 | #define MX_PARODD 0xC0 |
| 347 | #define MX_PARMARK 0xA0 |
| 348 | #define MX_PARSPACE 0x20 |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 349 | |
Jiri Slaby | b9705b60 | 2008-04-30 00:53:48 -0700 | [diff] [blame] | 350 | #define MOXA_VERSION "6.0k" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 352 | #define MOXA_FW_HDRLEN 32 |
| 353 | |
Jiri Slaby | 11324ed | 2007-02-10 01:45:31 -0800 | [diff] [blame] | 354 | #define MOXAMAJOR 172 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
Jiri Slaby | 11324ed | 2007-02-10 01:45:31 -0800 | [diff] [blame] | 356 | #define MAX_BOARDS 4 /* Don't change this value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
Jiri Slaby | 11324ed | 2007-02-10 01:45:31 -0800 | [diff] [blame] | 358 | #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 360 | #define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ |
| 361 | (brd)->boardType == MOXA_BOARD_C320_PCI) |
| 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | /* |
| 364 | * Define the Moxa PCI vendor and device IDs. |
| 365 | */ |
Jiri Slaby | 11324ed | 2007-02-10 01:45:31 -0800 | [diff] [blame] | 366 | #define MOXA_BUS_TYPE_ISA 0 |
| 367 | #define MOXA_BUS_TYPE_PCI 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | enum { |
| 370 | MOXA_BOARD_C218_PCI = 1, |
| 371 | MOXA_BOARD_C218_ISA, |
| 372 | MOXA_BOARD_C320_PCI, |
| 373 | MOXA_BOARD_C320_ISA, |
| 374 | MOXA_BOARD_CP204J, |
| 375 | }; |
| 376 | |
| 377 | static char *moxa_brdname[] = |
| 378 | { |
| 379 | "C218 Turbo PCI series", |
| 380 | "C218 Turbo ISA series", |
| 381 | "C320 Turbo PCI series", |
| 382 | "C320 Turbo ISA series", |
| 383 | "CP-204J series", |
| 384 | }; |
| 385 | |
| 386 | #ifdef CONFIG_PCI |
Arvind Yadav | 50bd842 | 2017-07-23 15:31:05 +0530 | [diff] [blame] | 387 | static const struct pci_device_id moxa_pcibrds[] = { |
Jiri Slaby | 5ebb407 | 2007-02-10 01:45:30 -0800 | [diff] [blame] | 388 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), |
| 389 | .driver_data = MOXA_BOARD_C218_PCI }, |
| 390 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), |
| 391 | .driver_data = MOXA_BOARD_C320_PCI }, |
| 392 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), |
| 393 | .driver_data = MOXA_BOARD_CP204J }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | { 0 } |
| 395 | }; |
| 396 | MODULE_DEVICE_TABLE(pci, moxa_pcibrds); |
| 397 | #endif /* CONFIG_PCI */ |
| 398 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 399 | struct moxa_port; |
| 400 | |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 401 | static struct moxa_board_conf { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | int boardType; |
| 403 | int numPorts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | int busType; |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 405 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 406 | unsigned int ready; |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 407 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 408 | struct moxa_port *ports; |
| 409 | |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 410 | void __iomem *basemem; |
| 411 | void __iomem *intNdx; |
| 412 | void __iomem *intPend; |
| 413 | void __iomem *intTable; |
| 414 | } moxa_boards[MAX_BOARDS]; |
| 415 | |
| 416 | struct mxser_mstatus { |
| 417 | tcflag_t cflag; |
| 418 | int cts; |
| 419 | int dsr; |
| 420 | int ri; |
| 421 | int dcd; |
Jiri Slaby | 9dff89c | 2007-02-10 01:45:30 -0800 | [diff] [blame] | 422 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 424 | struct moxaq_str { |
| 425 | int inq; |
| 426 | int outq; |
| 427 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 429 | struct moxa_port { |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 430 | struct tty_port port; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 431 | struct moxa_board_conf *board; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 432 | void __iomem *tableAddr; |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | int type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | int cflag; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 436 | unsigned long statusflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 438 | u8 DCDState; /* Protected by the port lock */ |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 439 | u8 lineCtrl; |
| 440 | u8 lowChkFlag; |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 441 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 443 | struct mon_str { |
| 444 | int tick; |
| 445 | int rxcnt[MAX_PORTS]; |
| 446 | int txcnt[MAX_PORTS]; |
| 447 | }; |
| 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | /* statusflags */ |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 450 | #define TXSTOPPED 1 |
| 451 | #define LOWWAIT 2 |
| 452 | #define EMPTYWAIT 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | #define WAKEUP_CHARS 256 |
| 456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | static int ttymajor = MOXAMAJOR; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 458 | static struct mon_str moxaLog; |
| 459 | static unsigned int moxaFuncTout = HZ / 2; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 460 | static unsigned int moxaLowWaterChk; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 461 | static DEFINE_MUTEX(moxa_openlock); |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 462 | static DEFINE_SPINLOCK(moxa_lock); |
Rakib Mullick | c6fc826 | 2009-12-09 12:34:18 -0800 | [diff] [blame] | 463 | |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 464 | static unsigned long baseaddr[MAX_BOARDS]; |
| 465 | static unsigned int type[MAX_BOARDS]; |
| 466 | static unsigned int numports[MAX_BOARDS]; |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 467 | static struct tty_port moxa_service_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
| 469 | MODULE_AUTHOR("William Chen"); |
| 470 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); |
| 471 | MODULE_LICENSE("GPL"); |
Ben Hutchings | e6c4ef9 | 2010-01-13 23:34:18 +0000 | [diff] [blame] | 472 | MODULE_FIRMWARE("c218tunx.cod"); |
| 473 | MODULE_FIRMWARE("cp204unx.cod"); |
| 474 | MODULE_FIRMWARE("c320tunx.cod"); |
Rakib Mullick | c6fc826 | 2009-12-09 12:34:18 -0800 | [diff] [blame] | 475 | |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 476 | module_param_array(type, uint, NULL, 0); |
| 477 | MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); |
David Howells | 3b60daf8 | 2017-04-04 16:54:29 +0100 | [diff] [blame] | 478 | module_param_hw_array(baseaddr, ulong, ioport, NULL, 0); |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 479 | MODULE_PARM_DESC(baseaddr, "base address"); |
| 480 | module_param_array(numports, uint, NULL, 0); |
| 481 | MODULE_PARM_DESC(numports, "numports (ignored for C218)"); |
Rakib Mullick | c6fc826 | 2009-12-09 12:34:18 -0800 | [diff] [blame] | 482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | module_param(ttymajor, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | /* |
| 486 | * static functions: |
| 487 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | static int moxa_open(struct tty_struct *, struct file *); |
| 489 | static void moxa_close(struct tty_struct *, struct file *); |
| 490 | static int moxa_write(struct tty_struct *, const unsigned char *, int); |
Jiri Slaby | 03b3b1a | 2021-05-05 11:19:15 +0200 | [diff] [blame] | 491 | static unsigned int moxa_write_room(struct tty_struct *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | static void moxa_flush_buffer(struct tty_struct *); |
Jiri Slaby | fff4ef1 | 2021-05-05 11:19:19 +0200 | [diff] [blame] | 493 | static unsigned int moxa_chars_in_buffer(struct tty_struct *); |
Ilpo Järvinen | a8c11c1 | 2022-08-16 14:57:39 +0300 | [diff] [blame] | 494 | static void moxa_set_termios(struct tty_struct *, const struct ktermios *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | static void moxa_stop(struct tty_struct *); |
| 496 | static void moxa_start(struct tty_struct *); |
| 497 | static void moxa_hangup(struct tty_struct *); |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 498 | static int moxa_tiocmget(struct tty_struct *tty); |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 499 | static int moxa_tiocmset(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | unsigned int set, unsigned int clear); |
Kees Cook | 24ed960 | 2017-08-28 11:28:21 -0700 | [diff] [blame] | 501 | static void moxa_poll(struct timer_list *); |
Ilpo Järvinen | a8c11c1 | 2022-08-16 14:57:39 +0300 | [diff] [blame] | 502 | static void moxa_set_tty_param(struct tty_struct *, const struct ktermios *); |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 503 | static void moxa_shutdown(struct tty_port *); |
Ilpo Järvinen | b300fb2 | 2023-01-17 11:03:52 +0200 | [diff] [blame] | 504 | static bool moxa_carrier_raised(struct tty_port *); |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 505 | static void moxa_dtr_rts(struct tty_port *, bool); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | /* |
| 507 | * moxa board interface functions: |
| 508 | */ |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 509 | static void MoxaPortEnable(struct moxa_port *); |
| 510 | static void MoxaPortDisable(struct moxa_port *); |
| 511 | static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 512 | static int MoxaPortGetLineOut(struct moxa_port *, bool *, bool *); |
| 513 | static void MoxaPortLineCtrl(struct moxa_port *, bool, bool); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 514 | static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); |
| 515 | static int MoxaPortLineStatus(struct moxa_port *); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 516 | static void MoxaPortFlushData(struct moxa_port *, int); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 517 | static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 518 | static int MoxaPortReadData(struct moxa_port *); |
Jiri Slaby | fff4ef1 | 2021-05-05 11:19:19 +0200 | [diff] [blame] | 519 | static unsigned int MoxaPortTxQueue(struct moxa_port *); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 520 | static int MoxaPortRxQueue(struct moxa_port *); |
Jiri Slaby | 03b3b1a | 2021-05-05 11:19:15 +0200 | [diff] [blame] | 521 | static unsigned int MoxaPortTxFree(struct moxa_port *); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 522 | static void MoxaPortTxDisable(struct moxa_port *); |
| 523 | static void MoxaPortTxEnable(struct moxa_port *); |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 524 | static int moxa_get_serial_info(struct tty_struct *, struct serial_struct *); |
| 525 | static int moxa_set_serial_info(struct tty_struct *, struct serial_struct *); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 526 | static void MoxaSetFifo(struct moxa_port *port, int enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 528 | /* |
| 529 | * I/O functions |
| 530 | */ |
| 531 | |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 532 | static DEFINE_SPINLOCK(moxafunc_lock); |
| 533 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 534 | static void moxa_wait_finish(void __iomem *ofsAddr) |
| 535 | { |
| 536 | unsigned long end = jiffies + moxaFuncTout; |
| 537 | |
| 538 | while (readw(ofsAddr + FuncCode) != 0) |
| 539 | if (time_after(jiffies, end)) |
| 540 | return; |
Manuel Zerpies | 5a3c6b251 | 2011-06-16 14:07:22 +0200 | [diff] [blame] | 541 | if (readw(ofsAddr + FuncCode) != 0) |
| 542 | printk_ratelimited(KERN_WARNING "moxa function expired\n"); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 543 | } |
| 544 | |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 545 | static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 546 | { |
Alan Cox | f5c5a36 | 2009-11-30 13:17:57 +0000 | [diff] [blame] | 547 | unsigned long flags; |
| 548 | spin_lock_irqsave(&moxafunc_lock, flags); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 549 | writew(arg, ofsAddr + FuncArg); |
| 550 | writew(cmd, ofsAddr + FuncCode); |
| 551 | moxa_wait_finish(ofsAddr); |
Alan Cox | f5c5a36 | 2009-11-30 13:17:57 +0000 | [diff] [blame] | 552 | spin_unlock_irqrestore(&moxafunc_lock, flags); |
| 553 | } |
| 554 | |
| 555 | static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) |
| 556 | { |
| 557 | unsigned long flags; |
| 558 | u16 ret; |
| 559 | spin_lock_irqsave(&moxafunc_lock, flags); |
| 560 | writew(arg, ofsAddr + FuncArg); |
| 561 | writew(cmd, ofsAddr + FuncCode); |
| 562 | moxa_wait_finish(ofsAddr); |
| 563 | ret = readw(ofsAddr + FuncArg); |
| 564 | spin_unlock_irqrestore(&moxafunc_lock, flags); |
| 565 | return ret; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 568 | static void moxa_low_water_check(void __iomem *ofsAddr) |
| 569 | { |
| 570 | u16 rptr, wptr, mask, len; |
| 571 | |
| 572 | if (readb(ofsAddr + FlagStat) & Xoff_state) { |
| 573 | rptr = readw(ofsAddr + RXrptr); |
| 574 | wptr = readw(ofsAddr + RXwptr); |
| 575 | mask = readw(ofsAddr + RX_mask); |
| 576 | len = (wptr - rptr) & mask; |
| 577 | if (len <= Low_water) |
| 578 | moxafunc(ofsAddr, FC_SendXon, 0); |
| 579 | } |
| 580 | } |
| 581 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 582 | /* |
| 583 | * TTY operations |
| 584 | */ |
| 585 | |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 586 | static int moxa_ioctl(struct tty_struct *tty, |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 587 | unsigned int cmd, unsigned long arg) |
| 588 | { |
| 589 | struct moxa_port *ch = tty->driver_data; |
| 590 | void __user *argp = (void __user *)arg; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 591 | int status, ret = 0; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 592 | |
| 593 | if (tty->index == MAX_PORTS) { |
| 594 | if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && |
| 595 | cmd != MOXA_GETMSTATUS) |
| 596 | return -EINVAL; |
| 597 | } else if (!ch) |
| 598 | return -ENODEV; |
| 599 | |
| 600 | switch (cmd) { |
| 601 | case MOXA_GETDATACOUNT: |
| 602 | moxaLog.tick = jiffies; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 603 | if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) |
| 604 | ret = -EFAULT; |
| 605 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 606 | case MOXA_FLUSH_QUEUE: |
| 607 | MoxaPortFlushData(ch, arg); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 608 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 609 | case MOXA_GET_IOQUEUE: { |
| 610 | struct moxaq_str __user *argm = argp; |
| 611 | struct moxaq_str tmp; |
| 612 | struct moxa_port *p; |
| 613 | unsigned int i, j; |
| 614 | |
| 615 | for (i = 0; i < MAX_BOARDS; i++) { |
| 616 | p = moxa_boards[i].ports; |
| 617 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { |
| 618 | memset(&tmp, 0, sizeof(tmp)); |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 619 | spin_lock_bh(&moxa_lock); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 620 | if (moxa_boards[i].ready) { |
| 621 | tmp.inq = MoxaPortRxQueue(p); |
| 622 | tmp.outq = MoxaPortTxQueue(p); |
| 623 | } |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 624 | spin_unlock_bh(&moxa_lock); |
| 625 | if (copy_to_user(argm, &tmp, sizeof(tmp))) |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 626 | return -EFAULT; |
| 627 | } |
| 628 | } |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 629 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 630 | } case MOXA_GET_OQUEUE: |
| 631 | status = MoxaPortTxQueue(ch); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 632 | ret = put_user(status, (unsigned long __user *)argp); |
| 633 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 634 | case MOXA_GET_IQUEUE: |
| 635 | status = MoxaPortRxQueue(ch); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 636 | ret = put_user(status, (unsigned long __user *)argp); |
| 637 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 638 | case MOXA_GETMSTATUS: { |
| 639 | struct mxser_mstatus __user *argm = argp; |
| 640 | struct mxser_mstatus tmp; |
| 641 | struct moxa_port *p; |
| 642 | unsigned int i, j; |
| 643 | |
| 644 | for (i = 0; i < MAX_BOARDS; i++) { |
| 645 | p = moxa_boards[i].ports; |
| 646 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 647 | struct tty_struct *ttyp; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 648 | memset(&tmp, 0, sizeof(tmp)); |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 649 | spin_lock_bh(&moxa_lock); |
| 650 | if (!moxa_boards[i].ready) { |
| 651 | spin_unlock_bh(&moxa_lock); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 652 | goto copy; |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 653 | } |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 654 | |
| 655 | status = MoxaPortLineStatus(p); |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 656 | spin_unlock_bh(&moxa_lock); |
| 657 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 658 | if (status & 1) |
| 659 | tmp.cts = 1; |
| 660 | if (status & 2) |
| 661 | tmp.dsr = 1; |
| 662 | if (status & 4) |
| 663 | tmp.dcd = 1; |
| 664 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 665 | ttyp = tty_port_tty_get(&p->port); |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 666 | if (!ttyp) |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 667 | tmp.cflag = p->cflag; |
| 668 | else |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 669 | tmp.cflag = ttyp->termios.c_cflag; |
Julia Lawall | df43daa | 2011-04-22 22:46:21 +0200 | [diff] [blame] | 670 | tty_kref_put(ttyp); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 671 | copy: |
Alan Cox | e8c6210 | 2009-11-30 13:18:24 +0000 | [diff] [blame] | 672 | if (copy_to_user(argm, &tmp, sizeof(tmp))) |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 673 | return -EFAULT; |
| 674 | } |
| 675 | } |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 676 | break; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 677 | } |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 678 | default: |
| 679 | ret = -ENOIOCTLCMD; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 680 | } |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 681 | return ret; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 682 | } |
| 683 | |
Alan Cox | 9e98966c | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 684 | static int moxa_break_ctl(struct tty_struct *tty, int state) |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 685 | { |
| 686 | struct moxa_port *port = tty->driver_data; |
| 687 | |
| 688 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, |
| 689 | Magic_code); |
Alan Cox | 9e98966c | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 690 | return 0; |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 691 | } |
| 692 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 693 | static const struct tty_operations moxa_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | .open = moxa_open, |
| 695 | .close = moxa_close, |
| 696 | .write = moxa_write, |
| 697 | .write_room = moxa_write_room, |
| 698 | .flush_buffer = moxa_flush_buffer, |
| 699 | .chars_in_buffer = moxa_chars_in_buffer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | .ioctl = moxa_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | .set_termios = moxa_set_termios, |
| 702 | .stop = moxa_stop, |
| 703 | .start = moxa_start, |
| 704 | .hangup = moxa_hangup, |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 705 | .break_ctl = moxa_break_ctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | .tiocmget = moxa_tiocmget, |
| 707 | .tiocmset = moxa_tiocmset, |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 708 | .set_serial = moxa_set_serial_info, |
| 709 | .get_serial = moxa_get_serial_info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | }; |
| 711 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 712 | static const struct tty_port_operations moxa_port_ops = { |
| 713 | .carrier_raised = moxa_carrier_raised, |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 714 | .dtr_rts = moxa_dtr_rts, |
| 715 | .shutdown = moxa_shutdown, |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 716 | }; |
| 717 | |
Jiri Slaby | aa7e522 | 2007-02-10 01:45:27 -0800 | [diff] [blame] | 718 | static struct tty_driver *moxaDriver; |
Kees Cook | 1d27e3e | 2017-10-04 16:27:04 -0700 | [diff] [blame] | 719 | static DEFINE_TIMER(moxaTimer, moxa_poll); |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 720 | |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 721 | /* |
| 722 | * HW init |
| 723 | */ |
| 724 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 725 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
| 726 | { |
| 727 | switch (brd->boardType) { |
| 728 | case MOXA_BOARD_C218_ISA: |
| 729 | case MOXA_BOARD_C218_PCI: |
| 730 | if (model != 1) |
| 731 | goto err; |
| 732 | break; |
| 733 | case MOXA_BOARD_CP204J: |
| 734 | if (model != 3) |
| 735 | goto err; |
| 736 | break; |
| 737 | default: |
| 738 | if (model != 2) |
| 739 | goto err; |
| 740 | break; |
| 741 | } |
| 742 | return 0; |
| 743 | err: |
| 744 | return -EINVAL; |
| 745 | } |
| 746 | |
| 747 | static int moxa_check_fw(const void *ptr) |
| 748 | { |
| 749 | const __le16 *lptr = ptr; |
| 750 | |
| 751 | if (*lptr != cpu_to_le16(0x7980)) |
| 752 | return -EINVAL; |
| 753 | |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, |
| 758 | size_t len) |
| 759 | { |
| 760 | void __iomem *baseAddr = brd->basemem; |
| 761 | u16 tmp; |
| 762 | |
| 763 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ |
| 764 | msleep(10); |
| 765 | memset_io(baseAddr, 0, 4096); |
| 766 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ |
| 767 | writeb(0, baseAddr + Control_reg); /* restart */ |
| 768 | |
| 769 | msleep(2000); |
| 770 | |
| 771 | switch (brd->boardType) { |
| 772 | case MOXA_BOARD_C218_ISA: |
| 773 | case MOXA_BOARD_C218_PCI: |
| 774 | tmp = readw(baseAddr + C218_key); |
| 775 | if (tmp != C218_KeyCode) |
| 776 | goto err; |
| 777 | break; |
| 778 | case MOXA_BOARD_CP204J: |
| 779 | tmp = readw(baseAddr + C218_key); |
| 780 | if (tmp != CP204J_KeyCode) |
| 781 | goto err; |
| 782 | break; |
| 783 | default: |
| 784 | tmp = readw(baseAddr + C320_key); |
| 785 | if (tmp != C320_KeyCode) |
| 786 | goto err; |
| 787 | tmp = readw(baseAddr + C320_status); |
| 788 | if (tmp != STS_init) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 789 | printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 790 | "module not found\n"); |
| 791 | return -EIO; |
| 792 | } |
| 793 | break; |
| 794 | } |
| 795 | |
| 796 | return 0; |
| 797 | err: |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 798 | printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 799 | return -EIO; |
| 800 | } |
| 801 | |
| 802 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, |
| 803 | size_t len) |
| 804 | { |
| 805 | void __iomem *baseAddr = brd->basemem; |
| 806 | |
| 807 | if (len < 7168) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 808 | printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 809 | return -EINVAL; |
| 810 | } |
| 811 | |
| 812 | writew(len - 7168 - 2, baseAddr + C320bapi_len); |
| 813 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ |
| 814 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); |
| 815 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ |
| 816 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); |
| 817 | |
| 818 | return 0; |
| 819 | } |
| 820 | |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 821 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 822 | size_t len) |
| 823 | { |
| 824 | void __iomem *baseAddr = brd->basemem; |
Harvey Harrison | b46f69c | 2008-10-15 22:04:19 -0700 | [diff] [blame] | 825 | const __le16 *uptr = ptr; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 826 | size_t wlen, len2, j; |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 827 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 828 | unsigned int i, retry; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 829 | u16 usum, keycode; |
| 830 | |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 831 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : |
| 832 | C218_KeyCode; |
| 833 | |
| 834 | switch (brd->boardType) { |
| 835 | case MOXA_BOARD_CP204J: |
| 836 | case MOXA_BOARD_C218_ISA: |
| 837 | case MOXA_BOARD_C218_PCI: |
| 838 | key = C218_key; |
| 839 | loadbuf = C218_LoadBuf; |
| 840 | loadlen = C218DLoad_len; |
| 841 | checksum = C218check_sum; |
| 842 | checksum_ok = C218chksum_ok; |
| 843 | break; |
| 844 | default: |
| 845 | key = C320_key; |
| 846 | keycode = C320_KeyCode; |
| 847 | loadbuf = C320_LoadBuf; |
| 848 | loadlen = C320DLoad_len; |
| 849 | checksum = C320check_sum; |
| 850 | checksum_ok = C320chksum_ok; |
| 851 | break; |
| 852 | } |
| 853 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 854 | usum = 0; |
| 855 | wlen = len >> 1; |
| 856 | for (i = 0; i < wlen; i++) |
| 857 | usum += le16_to_cpu(uptr[i]); |
| 858 | retry = 0; |
| 859 | do { |
| 860 | wlen = len >> 1; |
| 861 | j = 0; |
| 862 | while (wlen) { |
| 863 | len2 = (wlen > 2048) ? 2048 : wlen; |
| 864 | wlen -= len2; |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 865 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 866 | j += len2 << 1; |
| 867 | |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 868 | writew(len2, baseAddr + loadlen); |
| 869 | writew(0, baseAddr + key); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 870 | for (i = 0; i < 100; i++) { |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 871 | if (readw(baseAddr + key) == keycode) |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 872 | break; |
| 873 | msleep(10); |
| 874 | } |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 875 | if (readw(baseAddr + key) != keycode) |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 876 | return -EIO; |
| 877 | } |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 878 | writew(0, baseAddr + loadlen); |
| 879 | writew(usum, baseAddr + checksum); |
| 880 | writew(0, baseAddr + key); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 881 | for (i = 0; i < 100; i++) { |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 882 | if (readw(baseAddr + key) == keycode) |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 883 | break; |
| 884 | msleep(10); |
| 885 | } |
| 886 | retry++; |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 887 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
| 888 | if (readb(baseAddr + checksum_ok) != 1) |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 889 | return -EIO; |
| 890 | |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 891 | writew(0, baseAddr + key); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 892 | for (i = 0; i < 600; i++) { |
| 893 | if (readw(baseAddr + Magic_no) == Magic_code) |
| 894 | break; |
| 895 | msleep(10); |
| 896 | } |
| 897 | if (readw(baseAddr + Magic_no) != Magic_code) |
| 898 | return -EIO; |
| 899 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 900 | if (MOXA_IS_320(brd)) { |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 901 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ |
| 902 | writew(0x3800, baseAddr + TMS320_PORT1); |
| 903 | writew(0x3900, baseAddr + TMS320_PORT2); |
| 904 | writew(28499, baseAddr + TMS320_CLOCK); |
| 905 | } else { |
| 906 | writew(0x3200, baseAddr + TMS320_PORT1); |
| 907 | writew(0x3400, baseAddr + TMS320_PORT2); |
| 908 | writew(19999, baseAddr + TMS320_CLOCK); |
| 909 | } |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 910 | } |
| 911 | writew(1, baseAddr + Disable_IRQ); |
| 912 | writew(0, baseAddr + Magic_no); |
| 913 | for (i = 0; i < 500; i++) { |
| 914 | if (readw(baseAddr + Magic_no) == Magic_code) |
| 915 | break; |
| 916 | msleep(10); |
| 917 | } |
| 918 | if (readw(baseAddr + Magic_no) != Magic_code) |
| 919 | return -EIO; |
| 920 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 921 | if (MOXA_IS_320(brd)) { |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 922 | j = readw(baseAddr + Module_cnt); |
| 923 | if (j <= 0) |
| 924 | return -EIO; |
| 925 | brd->numPorts = j * 8; |
| 926 | writew(j, baseAddr + Module_no); |
| 927 | writew(0, baseAddr + Magic_no); |
| 928 | for (i = 0; i < 600; i++) { |
| 929 | if (readw(baseAddr + Magic_no) == Magic_code) |
| 930 | break; |
| 931 | msleep(10); |
| 932 | } |
| 933 | if (readw(baseAddr + Magic_no) != Magic_code) |
| 934 | return -EIO; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 935 | } |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 936 | brd->intNdx = baseAddr + IRQindex; |
| 937 | brd->intPend = baseAddr + IRQpending; |
| 938 | brd->intTable = baseAddr + IRQtable; |
| 939 | |
| 940 | return 0; |
| 941 | } |
| 942 | |
| 943 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, |
| 944 | size_t len) |
| 945 | { |
| 946 | void __iomem *ofsAddr, *baseAddr = brd->basemem; |
| 947 | struct moxa_port *port; |
| 948 | int retval, i; |
| 949 | |
| 950 | if (len % 2) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 951 | printk(KERN_ERR "MOXA: bios length is not even\n"); |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 952 | return -EINVAL; |
| 953 | } |
| 954 | |
Jiri Slaby | 5292bcd | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 955 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
| 956 | if (retval) |
| 957 | return retval; |
| 958 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 959 | switch (brd->boardType) { |
| 960 | case MOXA_BOARD_C218_ISA: |
| 961 | case MOXA_BOARD_C218_PCI: |
| 962 | case MOXA_BOARD_CP204J: |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 963 | port = brd->ports; |
| 964 | for (i = 0; i < brd->numPorts; i++, port++) { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 965 | port->board = brd; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 966 | port->DCDState = 0; |
| 967 | port->tableAddr = baseAddr + Extern_table + |
| 968 | Extern_size * i; |
| 969 | ofsAddr = port->tableAddr; |
| 970 | writew(C218rx_mask, ofsAddr + RX_mask); |
| 971 | writew(C218tx_mask, ofsAddr + TX_mask); |
| 972 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); |
| 973 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); |
| 974 | |
| 975 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); |
| 976 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); |
| 977 | |
| 978 | } |
| 979 | break; |
| 980 | default: |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 981 | port = brd->ports; |
| 982 | for (i = 0; i < brd->numPorts; i++, port++) { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 983 | port->board = brd; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 984 | port->DCDState = 0; |
| 985 | port->tableAddr = baseAddr + Extern_table + |
| 986 | Extern_size * i; |
| 987 | ofsAddr = port->tableAddr; |
| 988 | switch (brd->numPorts) { |
| 989 | case 8: |
| 990 | writew(C320p8rx_mask, ofsAddr + RX_mask); |
| 991 | writew(C320p8tx_mask, ofsAddr + TX_mask); |
| 992 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); |
| 993 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); |
| 994 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); |
| 995 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); |
| 996 | |
| 997 | break; |
| 998 | case 16: |
| 999 | writew(C320p16rx_mask, ofsAddr + RX_mask); |
| 1000 | writew(C320p16tx_mask, ofsAddr + TX_mask); |
| 1001 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); |
| 1002 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); |
| 1003 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); |
| 1004 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); |
| 1005 | break; |
| 1006 | |
| 1007 | case 24: |
| 1008 | writew(C320p24rx_mask, ofsAddr + RX_mask); |
| 1009 | writew(C320p24tx_mask, ofsAddr + TX_mask); |
| 1010 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); |
| 1011 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); |
| 1012 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); |
| 1013 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); |
| 1014 | break; |
| 1015 | case 32: |
| 1016 | writew(C320p32rx_mask, ofsAddr + RX_mask); |
| 1017 | writew(C320p32tx_mask, ofsAddr + TX_mask); |
| 1018 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); |
| 1019 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); |
| 1020 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); |
| 1021 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); |
| 1022 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); |
| 1023 | break; |
| 1024 | } |
| 1025 | } |
| 1026 | break; |
| 1027 | } |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1028 | return 0; |
| 1029 | } |
| 1030 | |
| 1031 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) |
| 1032 | { |
David Howells | 2bca76e | 2008-07-08 17:37:15 +0100 | [diff] [blame] | 1033 | const void *ptr = fw->data; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1034 | char rsn[64]; |
| 1035 | u16 lens[5]; |
| 1036 | size_t len; |
| 1037 | unsigned int a, lenp, lencnt; |
| 1038 | int ret = -EINVAL; |
| 1039 | struct { |
| 1040 | __le32 magic; /* 0x34303430 */ |
| 1041 | u8 reserved1[2]; |
| 1042 | u8 type; /* UNIX = 3 */ |
| 1043 | u8 model; /* C218T=1, C320T=2, CP204=3 */ |
| 1044 | u8 reserved2[8]; |
| 1045 | __le16 len[5]; |
David Howells | 2bca76e | 2008-07-08 17:37:15 +0100 | [diff] [blame] | 1046 | } const *hdr = ptr; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1047 | |
| 1048 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); |
| 1049 | |
| 1050 | if (fw->size < MOXA_FW_HDRLEN) { |
| 1051 | strcpy(rsn, "too short (even header won't fit)"); |
| 1052 | goto err; |
| 1053 | } |
| 1054 | if (hdr->magic != cpu_to_le32(0x30343034)) { |
| 1055 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); |
| 1056 | goto err; |
| 1057 | } |
| 1058 | if (hdr->type != 3) { |
| 1059 | sprintf(rsn, "not for linux, type is %u", hdr->type); |
| 1060 | goto err; |
| 1061 | } |
| 1062 | if (moxa_check_fw_model(brd, hdr->model)) { |
| 1063 | sprintf(rsn, "not for this card, model is %u", hdr->model); |
| 1064 | goto err; |
| 1065 | } |
| 1066 | |
| 1067 | len = MOXA_FW_HDRLEN; |
| 1068 | lencnt = hdr->model == 2 ? 5 : 3; |
| 1069 | for (a = 0; a < ARRAY_SIZE(lens); a++) { |
| 1070 | lens[a] = le16_to_cpu(hdr->len[a]); |
| 1071 | if (lens[a] && len + lens[a] <= fw->size && |
| 1072 | moxa_check_fw(&fw->data[len])) |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1073 | printk(KERN_WARNING "MOXA firmware: unexpected input " |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1074 | "at offset %u, but going on\n", (u32)len); |
| 1075 | if (!lens[a] && a < lencnt) { |
| 1076 | sprintf(rsn, "too few entries in fw file"); |
| 1077 | goto err; |
| 1078 | } |
| 1079 | len += lens[a]; |
| 1080 | } |
| 1081 | |
| 1082 | if (len != fw->size) { |
| 1083 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, |
| 1084 | (u32)len); |
| 1085 | goto err; |
| 1086 | } |
| 1087 | |
| 1088 | ptr += MOXA_FW_HDRLEN; |
| 1089 | lenp = 0; /* bios */ |
| 1090 | |
| 1091 | strcpy(rsn, "read above"); |
| 1092 | |
| 1093 | ret = moxa_load_bios(brd, ptr, lens[lenp]); |
| 1094 | if (ret) |
| 1095 | goto err; |
| 1096 | |
| 1097 | /* we skip the tty section (lens[1]), since we don't need it */ |
| 1098 | ptr += lens[lenp] + lens[lenp + 1]; |
| 1099 | lenp += 2; /* comm */ |
| 1100 | |
| 1101 | if (hdr->model == 2) { |
| 1102 | ret = moxa_load_320b(brd, ptr, lens[lenp]); |
| 1103 | if (ret) |
| 1104 | goto err; |
| 1105 | /* skip another tty */ |
| 1106 | ptr += lens[lenp] + lens[lenp + 1]; |
| 1107 | lenp += 2; |
| 1108 | } |
| 1109 | |
| 1110 | ret = moxa_load_code(brd, ptr, lens[lenp]); |
| 1111 | if (ret) |
| 1112 | goto err; |
| 1113 | |
| 1114 | return 0; |
| 1115 | err: |
| 1116 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); |
| 1117 | return ret; |
| 1118 | } |
| 1119 | |
| 1120 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) |
| 1121 | { |
| 1122 | const struct firmware *fw; |
| 1123 | const char *file; |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1124 | struct moxa_port *p; |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1125 | unsigned int i, first_idx; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1126 | int ret; |
| 1127 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1128 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
| 1129 | GFP_KERNEL); |
| 1130 | if (brd->ports == NULL) { |
| 1131 | printk(KERN_ERR "cannot allocate memory for ports\n"); |
| 1132 | ret = -ENOMEM; |
| 1133 | goto err; |
| 1134 | } |
| 1135 | |
| 1136 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 1137 | tty_port_init(&p->port); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1138 | p->port.ops = &moxa_port_ops; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1139 | p->type = PORT_16550A; |
| 1140 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1143 | switch (brd->boardType) { |
| 1144 | case MOXA_BOARD_C218_ISA: |
| 1145 | case MOXA_BOARD_C218_PCI: |
| 1146 | file = "c218tunx.cod"; |
| 1147 | break; |
| 1148 | case MOXA_BOARD_CP204J: |
| 1149 | file = "cp204unx.cod"; |
| 1150 | break; |
| 1151 | default: |
| 1152 | file = "c320tunx.cod"; |
| 1153 | break; |
| 1154 | } |
| 1155 | |
| 1156 | ret = request_firmware(&fw, file, dev); |
| 1157 | if (ret) { |
Jiri Slaby | ec09cd5 | 2008-04-30 00:53:49 -0700 | [diff] [blame] | 1158 | printk(KERN_ERR "MOXA: request_firmware failed. Make sure " |
| 1159 | "you've placed '%s' file into your firmware " |
| 1160 | "loader directory (e.g. /lib/firmware)\n", |
| 1161 | file); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1162 | goto err_free; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1163 | } |
| 1164 | |
| 1165 | ret = moxa_load_fw(brd, fw); |
| 1166 | |
| 1167 | release_firmware(fw); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1168 | |
| 1169 | if (ret) |
| 1170 | goto err_free; |
| 1171 | |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1172 | spin_lock_bh(&moxa_lock); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1173 | brd->ready = 1; |
Jiri Slaby | 0bcc4ca | 2008-04-30 00:53:42 -0700 | [diff] [blame] | 1174 | if (!timer_pending(&moxaTimer)) |
| 1175 | mod_timer(&moxaTimer, jiffies + HZ / 50); |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1176 | spin_unlock_bh(&moxa_lock); |
Jiri Slaby | 0bcc4ca | 2008-04-30 00:53:42 -0700 | [diff] [blame] | 1177 | |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1178 | first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD; |
| 1179 | for (i = 0; i < brd->numPorts; i++) |
| 1180 | tty_port_register_device(&brd->ports[i].port, moxaDriver, |
| 1181 | first_idx + i, dev); |
| 1182 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1183 | return 0; |
| 1184 | err_free: |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 1185 | for (i = 0; i < MAX_PORTS_PER_BOARD; i++) |
| 1186 | tty_port_destroy(&brd->ports[i].port); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1187 | kfree(brd->ports); |
| 1188 | err: |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1189 | return ret; |
| 1190 | } |
| 1191 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1192 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
| 1193 | { |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1194 | unsigned int a, opened, first_idx; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1195 | |
| 1196 | mutex_lock(&moxa_openlock); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1197 | spin_lock_bh(&moxa_lock); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1198 | brd->ready = 0; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1199 | spin_unlock_bh(&moxa_lock); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1200 | |
| 1201 | /* pci hot-un-plug support */ |
| 1202 | for (a = 0; a < brd->numPorts; a++) |
Peter Hurley | d41861c | 2016-04-09 17:53:25 -0700 | [diff] [blame] | 1203 | if (tty_port_initialized(&brd->ports[a].port)) |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 1204 | tty_port_tty_hangup(&brd->ports[a].port, false); |
| 1205 | |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 1206 | for (a = 0; a < MAX_PORTS_PER_BOARD; a++) |
| 1207 | tty_port_destroy(&brd->ports[a].port); |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 1208 | |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1209 | while (1) { |
| 1210 | opened = 0; |
| 1211 | for (a = 0; a < brd->numPorts; a++) |
Peter Hurley | d41861c | 2016-04-09 17:53:25 -0700 | [diff] [blame] | 1212 | if (tty_port_initialized(&brd->ports[a].port)) |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1213 | opened++; |
| 1214 | mutex_unlock(&moxa_openlock); |
| 1215 | if (!opened) |
| 1216 | break; |
| 1217 | msleep(50); |
| 1218 | mutex_lock(&moxa_openlock); |
| 1219 | } |
| 1220 | |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1221 | first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD; |
| 1222 | for (a = 0; a < brd->numPorts; a++) |
| 1223 | tty_unregister_device(moxaDriver, first_idx + a); |
| 1224 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1225 | iounmap(brd->basemem); |
| 1226 | brd->basemem = NULL; |
| 1227 | kfree(brd->ports); |
| 1228 | } |
| 1229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | #ifdef CONFIG_PCI |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 1231 | static int moxa_pci_probe(struct pci_dev *pdev, |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1232 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | { |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1234 | struct moxa_board_conf *board; |
| 1235 | unsigned int i; |
| 1236 | int board_type = ent->driver_data; |
| 1237 | int retval; |
| 1238 | |
| 1239 | retval = pci_enable_device(pdev); |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1240 | if (retval) { |
| 1241 | dev_err(&pdev->dev, "can't enable pci device\n"); |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1242 | goto err; |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1243 | } |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1244 | |
| 1245 | for (i = 0; i < MAX_BOARDS; i++) |
| 1246 | if (moxa_boards[i].basemem == NULL) |
| 1247 | break; |
| 1248 | |
| 1249 | retval = -ENODEV; |
| 1250 | if (i >= MAX_BOARDS) { |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1251 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1252 | "found. Board is ignored.\n", MAX_BOARDS); |
| 1253 | goto err; |
| 1254 | } |
| 1255 | |
| 1256 | board = &moxa_boards[i]; |
Jiri Slaby | e46a5e3 | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1257 | |
| 1258 | retval = pci_request_region(pdev, 2, "moxa-base"); |
| 1259 | if (retval) { |
| 1260 | dev_err(&pdev->dev, "can't request pci region 2\n"); |
| 1261 | goto err; |
| 1262 | } |
| 1263 | |
Christoph Hellwig | 4bdc0d6 | 2020-01-06 09:43:50 +0100 | [diff] [blame] | 1264 | board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1265 | if (board->basemem == NULL) { |
| 1266 | dev_err(&pdev->dev, "can't remap io space 2\n"); |
Julia Lawall | 386d95b | 2012-08-14 08:47:35 +0200 | [diff] [blame] | 1267 | retval = -ENOMEM; |
Jiri Slaby | e46a5e3 | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1268 | goto err_reg; |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1269 | } |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | board->boardType = board_type; |
| 1272 | switch (board_type) { |
| 1273 | case MOXA_BOARD_C218_ISA: |
| 1274 | case MOXA_BOARD_C218_PCI: |
| 1275 | board->numPorts = 8; |
| 1276 | break; |
| 1277 | |
| 1278 | case MOXA_BOARD_CP204J: |
| 1279 | board->numPorts = 4; |
| 1280 | break; |
| 1281 | default: |
| 1282 | board->numPorts = 0; |
| 1283 | break; |
| 1284 | } |
| 1285 | board->busType = MOXA_BUS_TYPE_PCI; |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1286 | |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1287 | retval = moxa_init_board(board, &pdev->dev); |
| 1288 | if (retval) |
| 1289 | goto err_base; |
| 1290 | |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1291 | pci_set_drvdata(pdev, board); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | |
Jiri Slaby | bb9f910 | 2008-04-30 00:53:48 -0700 | [diff] [blame] | 1293 | dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", |
| 1294 | moxa_brdname[board_type - 1], board->numPorts); |
| 1295 | |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1296 | return 0; |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1297 | err_base: |
| 1298 | iounmap(board->basemem); |
| 1299 | board->basemem = NULL; |
Jiri Slaby | e46a5e3 | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1300 | err_reg: |
| 1301 | pci_release_region(pdev, 2); |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1302 | err: |
| 1303 | return retval; |
| 1304 | } |
| 1305 | |
Bill Pemberton | ae8d8a1 | 2012-11-19 13:26:18 -0500 | [diff] [blame] | 1306 | static void moxa_pci_remove(struct pci_dev *pdev) |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1307 | { |
| 1308 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); |
| 1309 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1310 | moxa_board_deinit(brd); |
| 1311 | |
Jiri Slaby | e46a5e3 | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1312 | pci_release_region(pdev, 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | } |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1314 | |
| 1315 | static struct pci_driver moxa_pci_driver = { |
| 1316 | .name = "moxa", |
| 1317 | .id_table = moxa_pcibrds, |
| 1318 | .probe = moxa_pci_probe, |
Bill Pemberton | 91116cb | 2012-11-19 13:21:06 -0500 | [diff] [blame] | 1319 | .remove = moxa_pci_remove |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1320 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | #endif /* CONFIG_PCI */ |
| 1322 | |
| 1323 | static int __init moxa_init(void) |
| 1324 | { |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1325 | unsigned int isabrds = 0; |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1326 | int retval = 0; |
Rakib Mullick | c6fc826 | 2009-12-09 12:34:18 -0800 | [diff] [blame] | 1327 | struct moxa_board_conf *brd = moxa_boards; |
| 1328 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1330 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
| 1331 | MOXA_VERSION); |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1332 | |
| 1333 | tty_port_init(&moxa_service_port); |
| 1334 | |
| 1335 | moxaDriver = tty_alloc_driver(MAX_PORTS + 1, |
| 1336 | TTY_DRIVER_REAL_RAW | |
| 1337 | TTY_DRIVER_DYNAMIC_DEV); |
Dan Carpenter | c3a6344 | 2012-08-16 16:16:56 +0300 | [diff] [blame] | 1338 | if (IS_ERR(moxaDriver)) |
| 1339 | return PTR_ERR(moxaDriver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | |
Sergey Vlasov | 9b4e3b1 | 2005-09-03 16:26:49 +0100 | [diff] [blame] | 1341 | moxaDriver->name = "ttyMX"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | moxaDriver->major = ttymajor; |
| 1343 | moxaDriver->minor_start = 0; |
| 1344 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; |
| 1345 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; |
| 1346 | moxaDriver->init_termios = tty_std_termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1348 | moxaDriver->init_termios.c_ispeed = 9600; |
| 1349 | moxaDriver->init_termios.c_ospeed = 9600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | tty_set_operations(moxaDriver, &moxa_ops); |
Jiri Slaby | 793be89 | 2012-08-07 21:47:55 +0200 | [diff] [blame] | 1351 | /* Having one more port only for ioctls is ugly */ |
| 1352 | tty_port_link_device(&moxa_service_port, moxaDriver, MAX_PORTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | if (tty_register_driver(moxaDriver)) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1355 | printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); |
Jiri Slaby | 9f90a4d | 2021-07-23 09:43:16 +0200 | [diff] [blame] | 1356 | tty_driver_kref_put(moxaDriver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | return -1; |
| 1358 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1360 | /* Find the boards defined from module args. */ |
Rakib Mullick | c6fc826 | 2009-12-09 12:34:18 -0800 | [diff] [blame] | 1361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | for (i = 0; i < MAX_BOARDS; i++) { |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1363 | if (!baseaddr[i]) |
| 1364 | break; |
| 1365 | if (type[i] == MOXA_BOARD_C218_ISA || |
| 1366 | type[i] == MOXA_BOARD_C320_ISA) { |
Jiri Slaby | 7aeb95d | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1367 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1368 | isabrds + 1, moxa_brdname[type[i] - 1], |
| 1369 | baseaddr[i]); |
| 1370 | brd->boardType = type[i]; |
| 1371 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : |
| 1372 | numports[i]; |
| 1373 | brd->busType = MOXA_BUS_TYPE_ISA; |
Christoph Hellwig | 4bdc0d6 | 2020-01-06 09:43:50 +0100 | [diff] [blame] | 1374 | brd->basemem = ioremap(baseaddr[i], 0x4000); |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1375 | if (!brd->basemem) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1376 | printk(KERN_ERR "MOXA: can't remap %lx\n", |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1377 | baseaddr[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | continue; |
| 1379 | } |
Jiri Slaby | 0371823 | 2008-04-30 00:53:39 -0700 | [diff] [blame] | 1380 | if (moxa_init_board(brd, NULL)) { |
| 1381 | iounmap(brd->basemem); |
| 1382 | brd->basemem = NULL; |
| 1383 | continue; |
| 1384 | } |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1385 | |
Hans Wennborg | e052539 | 2014-08-05 21:43:42 -0700 | [diff] [blame] | 1386 | printk(KERN_INFO "MOXA isa board found at 0x%.8lx and " |
Jiri Slaby | bb9f910 | 2008-04-30 00:53:48 -0700 | [diff] [blame] | 1387 | "ready (%u ports, firmware loaded)\n", |
| 1388 | baseaddr[i], brd->numPorts); |
| 1389 | |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1390 | brd++; |
| 1391 | isabrds++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | } |
| 1393 | } |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | #ifdef CONFIG_PCI |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1396 | retval = pci_register_driver(&moxa_pci_driver); |
| 1397 | if (retval) { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1398 | printk(KERN_ERR "Can't register MOXA pci driver!\n"); |
Jiri Slaby | d353eca | 2008-04-30 00:53:37 -0700 | [diff] [blame] | 1399 | if (isabrds) |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1400 | retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | } |
| 1402 | #endif |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1403 | |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1404 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | } |
| 1406 | |
| 1407 | static void __exit moxa_exit(void) |
| 1408 | { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1409 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1411 | #ifdef CONFIG_PCI |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1412 | pci_unregister_driver(&moxa_pci_driver); |
Jiri Slaby | 9cde5bf | 2007-02-10 01:45:35 -0800 | [diff] [blame] | 1413 | #endif |
Jiri Slaby | a784bf7 | 2007-02-10 01:45:36 -0800 | [diff] [blame] | 1414 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1415 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
| 1416 | if (moxa_boards[i].ready) |
| 1417 | moxa_board_deinit(&moxa_boards[i]); |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1418 | |
| 1419 | del_timer_sync(&moxaTimer); |
| 1420 | |
Jiri Slaby | 6c2e631 | 2021-03-02 07:22:04 +0100 | [diff] [blame] | 1421 | tty_unregister_driver(moxaDriver); |
Jiri Slaby | 9f90a4d | 2021-07-23 09:43:16 +0200 | [diff] [blame] | 1422 | tty_driver_kref_put(moxaDriver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | |
| 1425 | module_init(moxa_init); |
| 1426 | module_exit(moxa_exit); |
| 1427 | |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1428 | static void moxa_shutdown(struct tty_port *port) |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1429 | { |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1430 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
| 1431 | MoxaPortDisable(ch); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1432 | MoxaPortFlushData(ch, 2); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1433 | } |
| 1434 | |
Ilpo Järvinen | b300fb2 | 2023-01-17 11:03:52 +0200 | [diff] [blame] | 1435 | static bool moxa_carrier_raised(struct tty_port *port) |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1436 | { |
| 1437 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
| 1438 | int dcd; |
| 1439 | |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1440 | spin_lock_irq(&port->lock); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1441 | dcd = ch->DCDState; |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1442 | spin_unlock_irq(&port->lock); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1443 | return dcd; |
| 1444 | } |
| 1445 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1446 | static void moxa_dtr_rts(struct tty_port *port, bool active) |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1447 | { |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1448 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1449 | MoxaPortLineCtrl(ch, active, active); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1450 | } |
| 1451 | |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
| 1454 | { |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1455 | struct moxa_board_conf *brd; |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 1456 | struct moxa_port *ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | int port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
Jiri Slaby | 11324ed | 2007-02-10 01:45:31 -0800 | [diff] [blame] | 1459 | port = tty->index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | if (port == MAX_PORTS) { |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1461 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | } |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1463 | if (mutex_lock_interruptible(&moxa_openlock)) |
| 1464 | return -ERESTARTSYS; |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1465 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1466 | if (!brd->ready) { |
| 1467 | mutex_unlock(&moxa_openlock); |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1468 | return -ENODEV; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1469 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | |
Dirk Eibach | f0e8527 | 2009-06-11 14:56:44 +0100 | [diff] [blame] | 1471 | if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { |
| 1472 | mutex_unlock(&moxa_openlock); |
| 1473 | return -ENODEV; |
| 1474 | } |
| 1475 | |
Jiri Slaby | 810ab09 | 2008-04-30 00:53:41 -0700 | [diff] [blame] | 1476 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 1477 | ch->port.count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | tty->driver_data = ch; |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1479 | tty_port_tty_set(&ch->port, tty); |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1480 | mutex_lock(&ch->port.mutex); |
Peter Hurley | d41861c | 2016-04-09 17:53:25 -0700 | [diff] [blame] | 1481 | if (!tty_port_initialized(&ch->port)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | ch->statusflags = 0; |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1483 | moxa_set_tty_param(tty, &tty->termios); |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1484 | MoxaPortLineCtrl(ch, true, true); |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1485 | MoxaPortEnable(ch); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1486 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
Ilpo Järvinen | 515be7ba | 2023-01-17 11:03:47 +0200 | [diff] [blame] | 1487 | tty_port_set_initialized(&ch->port, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | } |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1489 | mutex_unlock(&ch->port.mutex); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1490 | mutex_unlock(&moxa_openlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Jiri Slaby | 7c31bdb | 2011-03-29 23:23:41 +0200 | [diff] [blame] | 1492 | return tty_port_block_til_ready(&ch->port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | } |
| 1494 | |
| 1495 | static void moxa_close(struct tty_struct *tty, struct file *filp) |
| 1496 | { |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1497 | struct moxa_port *ch = tty->driver_data; |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1498 | ch->cflag = tty->termios.c_cflag; |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1499 | tty_port_close(&ch->port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | static int moxa_write(struct tty_struct *tty, |
| 1503 | const unsigned char *buf, int count) |
| 1504 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1505 | struct moxa_port *ch = tty->driver_data; |
Jiri Slaby | 0ad7c9a | 2011-04-20 10:43:15 +0200 | [diff] [blame] | 1506 | unsigned long flags; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1507 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | if (ch == NULL) |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1510 | return 0; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1511 | |
Jiri Slaby | 0ad7c9a | 2011-04-20 10:43:15 +0200 | [diff] [blame] | 1512 | spin_lock_irqsave(&moxa_lock, flags); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1513 | len = MoxaPortWriteData(tty, buf, count); |
Jiri Slaby | 0ad7c9a | 2011-04-20 10:43:15 +0200 | [diff] [blame] | 1514 | spin_unlock_irqrestore(&moxa_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1516 | set_bit(LOWWAIT, &ch->statusflags); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1517 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | } |
| 1519 | |
Jiri Slaby | 03b3b1a | 2021-05-05 11:19:15 +0200 | [diff] [blame] | 1520 | static unsigned int moxa_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | { |
Jiri Slaby | 8f8ecba | 2007-02-10 01:45:33 -0800 | [diff] [blame] | 1522 | struct moxa_port *ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | |
Jiri Slaby | 6e94dbc | 2021-05-05 11:19:05 +0200 | [diff] [blame] | 1524 | if (tty->flow.stopped) |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1525 | return 0; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1526 | ch = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | if (ch == NULL) |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1528 | return 0; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1529 | return MoxaPortTxFree(ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | } |
| 1531 | |
| 1532 | static void moxa_flush_buffer(struct tty_struct *tty) |
| 1533 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1534 | struct moxa_port *ch = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | |
| 1536 | if (ch == NULL) |
| 1537 | return; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1538 | MoxaPortFlushData(ch, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | tty_wakeup(tty); |
| 1540 | } |
| 1541 | |
Jiri Slaby | fff4ef1 | 2021-05-05 11:19:19 +0200 | [diff] [blame] | 1542 | static unsigned int moxa_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1544 | struct moxa_port *ch = tty->driver_data; |
Jiri Slaby | fff4ef1 | 2021-05-05 11:19:19 +0200 | [diff] [blame] | 1545 | unsigned int chars; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1547 | chars = MoxaPortTxQueue(ch); |
Alan Cox | f710ebd | 2009-11-30 13:18:18 +0000 | [diff] [blame] | 1548 | if (chars) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | /* |
| 1550 | * Make it possible to wakeup anything waiting for output |
| 1551 | * in tty_ioctl.c, etc. |
| 1552 | */ |
Alan Cox | f710ebd | 2009-11-30 13:18:18 +0000 | [diff] [blame] | 1553 | set_bit(EMPTYWAIT, &ch->statusflags); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1554 | return chars; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | } |
| 1556 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 1557 | static int moxa_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | { |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1559 | struct moxa_port *ch = tty->driver_data; |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1560 | bool dtr_active, rts_active; |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1561 | int flag = 0; |
| 1562 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1564 | MoxaPortGetLineOut(ch, &dtr_active, &rts_active); |
| 1565 | if (dtr_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | flag |= TIOCM_DTR; |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1567 | if (rts_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | flag |= TIOCM_RTS; |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1569 | status = MoxaPortLineStatus(ch); |
| 1570 | if (status & 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | flag |= TIOCM_CTS; |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1572 | if (status & 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | flag |= TIOCM_DSR; |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1574 | if (status & 4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | flag |= TIOCM_CD; |
| 1576 | return flag; |
| 1577 | } |
| 1578 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 1579 | static int moxa_tiocmset(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | unsigned int set, unsigned int clear) |
| 1581 | { |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1582 | bool dtr_active, rts_active; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1583 | struct moxa_port *ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1585 | mutex_lock(&moxa_openlock); |
| 1586 | ch = tty->driver_data; |
| 1587 | if (!ch) { |
| 1588 | mutex_unlock(&moxa_openlock); |
Jiri Slaby | 74d7d97 | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1589 | return -EINVAL; |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1590 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1592 | MoxaPortGetLineOut(ch, &dtr_active, &rts_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | if (set & TIOCM_RTS) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1594 | rts_active = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | if (set & TIOCM_DTR) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1596 | dtr_active = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | if (clear & TIOCM_RTS) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1598 | rts_active = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | if (clear & TIOCM_DTR) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1600 | dtr_active = false; |
| 1601 | MoxaPortLineCtrl(ch, dtr_active, rts_active); |
Jiri Slaby | a8f5cda | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1602 | mutex_unlock(&moxa_openlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | return 0; |
| 1604 | } |
| 1605 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | static void moxa_set_termios(struct tty_struct *tty, |
Ilpo Järvinen | a8c11c1 | 2022-08-16 14:57:39 +0300 | [diff] [blame] | 1607 | const struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1609 | struct moxa_port *ch = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | |
| 1611 | if (ch == NULL) |
| 1612 | return; |
Alan Cox | db1acaa | 2008-02-08 04:18:43 -0800 | [diff] [blame] | 1613 | moxa_set_tty_param(tty, old_termios); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1614 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 1615 | wake_up_interruptible(&ch->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | } |
| 1617 | |
| 1618 | static void moxa_stop(struct tty_struct *tty) |
| 1619 | { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1620 | struct moxa_port *ch = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | |
| 1622 | if (ch == NULL) |
| 1623 | return; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1624 | MoxaPortTxDisable(ch); |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1625 | set_bit(TXSTOPPED, &ch->statusflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | } |
| 1627 | |
| 1628 | |
| 1629 | static void moxa_start(struct tty_struct *tty) |
| 1630 | { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1631 | struct moxa_port *ch = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | |
| 1633 | if (ch == NULL) |
| 1634 | return; |
| 1635 | |
Dan Carpenter | 58112dfb | 2012-03-07 13:05:00 +0300 | [diff] [blame] | 1636 | if (!test_bit(TXSTOPPED, &ch->statusflags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | return; |
| 1638 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1639 | MoxaPortTxEnable(ch); |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1640 | clear_bit(TXSTOPPED, &ch->statusflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | } |
| 1642 | |
| 1643 | static void moxa_hangup(struct tty_struct *tty) |
| 1644 | { |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1645 | struct moxa_port *ch = tty->driver_data; |
Alan Cox | f176178 | 2009-11-30 13:17:51 +0000 | [diff] [blame] | 1646 | tty_port_hangup(&ch->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | } |
| 1648 | |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1649 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
| 1650 | { |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1651 | unsigned long flags; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1652 | dcd = !!dcd; |
| 1653 | |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1654 | spin_lock_irqsave(&p->port.lock, flags); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1655 | if (dcd != p->DCDState) { |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1656 | p->DCDState = dcd; |
| 1657 | spin_unlock_irqrestore(&p->port.lock, flags); |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 1658 | if (!dcd) |
| 1659 | tty_port_tty_hangup(&p->port, true); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1660 | } |
Alan Cox | 8482bcd | 2009-11-30 13:18:13 +0000 | [diff] [blame] | 1661 | else |
| 1662 | spin_unlock_irqrestore(&p->port.lock, flags); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1663 | } |
| 1664 | |
| 1665 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
| 1666 | u16 __iomem *ip) |
| 1667 | { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1668 | struct tty_struct *tty = tty_port_tty_get(&p->port); |
Ilpo Järvinen | c2ac4bf | 2023-01-17 11:03:50 +0200 | [diff] [blame] | 1669 | bool inited = tty_port_initialized(&p->port); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1670 | void __iomem *ofsAddr; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1671 | u16 intr; |
| 1672 | |
| 1673 | if (tty) { |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1674 | if (test_bit(EMPTYWAIT, &p->statusflags) && |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1675 | MoxaPortTxQueue(p) == 0) { |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1676 | clear_bit(EMPTYWAIT, &p->statusflags); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1677 | tty_wakeup(tty); |
| 1678 | } |
Jiri Slaby | 6e94dbc | 2021-05-05 11:19:05 +0200 | [diff] [blame] | 1679 | if (test_bit(LOWWAIT, &p->statusflags) && !tty->flow.stopped && |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1680 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1681 | clear_bit(LOWWAIT, &p->statusflags); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1682 | tty_wakeup(tty); |
| 1683 | } |
| 1684 | |
Peter Hurley | 97ef38b | 2016-04-09 17:11:36 -0700 | [diff] [blame] | 1685 | if (inited && !tty_throttled(tty) && |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1686 | MoxaPortRxQueue(p) > 0) { /* RX */ |
| 1687 | MoxaPortReadData(p); |
Jiri Slaby | 5f6a851 | 2021-11-22 12:16:46 +0100 | [diff] [blame] | 1688 | tty_flip_buffer_push(&p->port); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1689 | } |
| 1690 | } else { |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 1691 | clear_bit(EMPTYWAIT, &p->statusflags); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1692 | MoxaPortFlushData(p, 0); /* flush RX */ |
| 1693 | } |
| 1694 | |
| 1695 | if (!handle) /* nothing else to do */ |
Jiri Slaby | 0e0fd7d | 2009-04-06 17:34:04 +0100 | [diff] [blame] | 1696 | goto put; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1697 | |
| 1698 | intr = readw(ip); /* port irq status */ |
| 1699 | if (intr == 0) |
Jiri Slaby | 0e0fd7d | 2009-04-06 17:34:04 +0100 | [diff] [blame] | 1700 | goto put; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1701 | |
| 1702 | writew(0, ip); /* ACK port */ |
| 1703 | ofsAddr = p->tableAddr; |
| 1704 | if (intr & IntrTx) /* disable tx intr */ |
| 1705 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, |
| 1706 | ofsAddr + HostStat); |
| 1707 | |
| 1708 | if (!inited) |
Jiri Slaby | 0e0fd7d | 2009-04-06 17:34:04 +0100 | [diff] [blame] | 1709 | goto put; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1710 | |
| 1711 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 1712 | tty_insert_flip_char(&p->port, 0, TTY_BREAK); |
Jiri Slaby | 5f6a851 | 2021-11-22 12:16:46 +0100 | [diff] [blame] | 1713 | tty_flip_buffer_push(&p->port); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | if (intr & IntrLine) |
| 1717 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); |
Jiri Slaby | 0e0fd7d | 2009-04-06 17:34:04 +0100 | [diff] [blame] | 1718 | put: |
| 1719 | tty_kref_put(tty); |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1720 | |
| 1721 | return 0; |
| 1722 | } |
| 1723 | |
Kees Cook | 24ed960 | 2017-08-28 11:28:21 -0700 | [diff] [blame] | 1724 | static void moxa_poll(struct timer_list *unused) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | { |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1726 | struct moxa_board_conf *brd; |
| 1727 | u16 __iomem *ip; |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1728 | unsigned int card, port, served = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1730 | spin_lock(&moxa_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | for (card = 0; card < MAX_BOARDS; card++) { |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1732 | brd = &moxa_boards[card]; |
| 1733 | if (!brd->ready) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | continue; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1735 | |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1736 | served++; |
| 1737 | |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1738 | ip = NULL; |
| 1739 | if (readb(brd->intPend) == 0xff) |
| 1740 | ip = brd->intTable + readb(brd->intNdx); |
| 1741 | |
| 1742 | for (port = 0; port < brd->numPorts; port++) |
| 1743 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); |
| 1744 | |
| 1745 | if (ip) |
| 1746 | writeb(0, brd->intPend); /* ACK */ |
| 1747 | |
| 1748 | if (moxaLowWaterChk) { |
| 1749 | struct moxa_port *p = brd->ports; |
| 1750 | for (port = 0; port < brd->numPorts; port++, p++) |
| 1751 | if (p->lowChkFlag) { |
| 1752 | p->lowChkFlag = 0; |
| 1753 | moxa_low_water_check(p->tableAddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | } |
| 1756 | } |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 1757 | moxaLowWaterChk = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | |
Jiri Slaby | 2a54134 | 2008-04-30 00:53:45 -0700 | [diff] [blame] | 1759 | if (served) |
| 1760 | mod_timer(&moxaTimer, jiffies + HZ / 50); |
| 1761 | spin_unlock(&moxa_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1762 | } |
| 1763 | |
| 1764 | /******************************************************************************/ |
| 1765 | |
Ilpo Järvinen | a8c11c1 | 2022-08-16 14:57:39 +0300 | [diff] [blame] | 1766 | static void moxa_set_tty_param(struct tty_struct *tty, |
| 1767 | const struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | { |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1769 | register struct ktermios *ts = &tty->termios; |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1770 | struct moxa_port *ch = tty->driver_data; |
Alan Cox | db1acaa | 2008-02-08 04:18:43 -0800 | [diff] [blame] | 1771 | int rts, cts, txflow, rxflow, xany, baud; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | rts = cts = txflow = rxflow = xany = 0; |
| 1774 | if (ts->c_cflag & CRTSCTS) |
| 1775 | rts = cts = 1; |
| 1776 | if (ts->c_iflag & IXON) |
| 1777 | txflow = 1; |
| 1778 | if (ts->c_iflag & IXOFF) |
| 1779 | rxflow = 1; |
| 1780 | if (ts->c_iflag & IXANY) |
| 1781 | xany = 1; |
Alan Cox | db1acaa | 2008-02-08 04:18:43 -0800 | [diff] [blame] | 1782 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1783 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
| 1784 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); |
Alan Cox | db1acaa | 2008-02-08 04:18:43 -0800 | [diff] [blame] | 1785 | if (baud == -1) |
| 1786 | baud = tty_termios_baud_rate(old_termios); |
| 1787 | /* Not put the baud rate into the termios data */ |
| 1788 | tty_encode_baud_rate(tty, baud, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | } |
| 1790 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | /***************************************************************************** |
| 1792 | * Driver level functions: * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | *****************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1795 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | { |
| 1797 | void __iomem *ofsAddr; |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 1798 | if (mode < 0 || mode > 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | return; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1800 | ofsAddr = port->tableAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
| 1802 | if (mode != 1) { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 1803 | port->lowChkFlag = 0; |
Jiri Slaby | 6f56b658 | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 1804 | moxa_low_water_check(ofsAddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | } |
| 1806 | } |
| 1807 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | /* |
| 1809 | * Moxa Port Number Description: |
| 1810 | * |
| 1811 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, |
| 1812 | * the port number using in MOXA driver functions will be 0 to 31 for |
| 1813 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 |
| 1814 | * to 127 for fourth. For example, if you setup three MOXA boards, |
| 1815 | * first board is C218, second board is C320-16 and third board is |
| 1816 | * C320-32. The port number of first board (C218 - 8 ports) is from |
| 1817 | * 0 to 7. The port number of second board (C320 - 16 ports) is form |
| 1818 | * 32 to 47. The port number of third board (C320 - 32 ports) is from |
| 1819 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to |
| 1820 | * 127 will be invalid. |
| 1821 | * |
| 1822 | * |
| 1823 | * Moxa Functions Description: |
| 1824 | * |
| 1825 | * Function 1: Driver initialization routine, this routine must be |
| 1826 | * called when initialized driver. |
| 1827 | * Syntax: |
| 1828 | * void MoxaDriverInit(); |
| 1829 | * |
| 1830 | * |
| 1831 | * Function 2: Moxa driver private IOCTL command processing. |
| 1832 | * Syntax: |
| 1833 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); |
| 1834 | * |
| 1835 | * unsigned int cmd : IOCTL command |
| 1836 | * unsigned long arg : IOCTL argument |
| 1837 | * int port : port number (0 - 127) |
| 1838 | * |
| 1839 | * return: 0 (OK) |
| 1840 | * -EINVAL |
| 1841 | * -ENOIOCTLCMD |
| 1842 | * |
| 1843 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | * Function 6: Enable this port to start Tx/Rx data. |
| 1845 | * Syntax: |
| 1846 | * void MoxaPortEnable(int port); |
| 1847 | * int port : port number (0 - 127) |
| 1848 | * |
| 1849 | * |
| 1850 | * Function 7: Disable this port |
| 1851 | * Syntax: |
| 1852 | * void MoxaPortDisable(int port); |
| 1853 | * int port : port number (0 - 127) |
| 1854 | * |
| 1855 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | * Function 10: Setting baud rate of this port. |
| 1857 | * Syntax: |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 1858 | * speed_t MoxaPortSetBaud(int port, speed_t baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | * int port : port number (0 - 127) |
| 1860 | * long baud : baud rate (50 - 115200) |
| 1861 | * |
| 1862 | * return: 0 : this port is invalid or baud < 50 |
| 1863 | * 50 - 115200 : the real baud rate set to the port, if |
| 1864 | * the argument baud is large than maximun |
| 1865 | * available baud rate, the real setting |
| 1866 | * baud rate will be the maximun baud rate. |
| 1867 | * |
| 1868 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | * Function 12: Configure the port. |
| 1870 | * Syntax: |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1871 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | * int port : port number (0 - 127) |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1873 | * struct ktermios * termio : termio structure pointer |
Alan Cox | c7bce30 | 2006-09-30 23:27:24 -0700 | [diff] [blame] | 1874 | * speed_t baud : baud rate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | * |
| 1876 | * return: -1 : this port is invalid or termio == NULL |
| 1877 | * 0 : setting O.K. |
| 1878 | * |
| 1879 | * |
| 1880 | * Function 13: Get the DTR/RTS state of this port. |
| 1881 | * Syntax: |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1882 | * int MoxaPortGetLineOut(int port, bool *dtrState, bool *rtsState); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | * int port : port number (0 - 127) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1884 | * bool * dtr_active : pointer to bool to receive the current DTR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | * state. (if NULL, this function will not |
| 1886 | * write to this address) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1887 | * bool * rts_active : pointer to bool to receive the current RTS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | * state. (if NULL, this function will not |
| 1889 | * write to this address) |
| 1890 | * |
| 1891 | * return: -1 : this port is invalid |
| 1892 | * 0 : O.K. |
| 1893 | * |
| 1894 | * |
| 1895 | * Function 14: Setting the DTR/RTS output state of this port. |
| 1896 | * Syntax: |
Ilpo Järvinen | 5d42039 | 2023-01-17 11:03:53 +0200 | [diff] [blame] | 1897 | * void MoxaPortLineCtrl(int port, bool dtrState, bool rtsState); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | * int port : port number (0 - 127) |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 1899 | * bool dtr_active : DTR output state |
| 1900 | * bool rts_active : RTS output state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | * |
| 1902 | * |
| 1903 | * Function 15: Setting the flow control of this port. |
| 1904 | * Syntax: |
| 1905 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, |
| 1906 | * int txFlow,int xany); |
| 1907 | * int port : port number (0 - 127) |
| 1908 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) |
| 1909 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) |
| 1910 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) |
| 1911 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) |
| 1912 | * int xany : S/W XANY flow control (0: no, 1: yes) |
| 1913 | * |
| 1914 | * |
| 1915 | * Function 16: Get ths line status of this port |
| 1916 | * Syntax: |
| 1917 | * int MoxaPortLineStatus(int port); |
| 1918 | * int port : port number (0 - 127) |
| 1919 | * |
| 1920 | * return: Bit 0 - CTS state (0: off, 1: on) |
| 1921 | * Bit 1 - DSR state (0: off, 1: on) |
| 1922 | * Bit 2 - DCD state (0: off, 1: on) |
| 1923 | * |
| 1924 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | * Function 19: Flush the Rx/Tx buffer data of this port. |
| 1926 | * Syntax: |
| 1927 | * void MoxaPortFlushData(int port, int mode); |
| 1928 | * int port : port number (0 - 127) |
| 1929 | * int mode |
| 1930 | * 0 : flush the Rx buffer |
| 1931 | * 1 : flush the Tx buffer |
| 1932 | * 2 : flush the Rx and Tx buffer |
| 1933 | * |
| 1934 | * |
| 1935 | * Function 20: Write data. |
| 1936 | * Syntax: |
| 1937 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); |
| 1938 | * int port : port number (0 - 127) |
| 1939 | * unsigned char * buffer : pointer to write data buffer. |
| 1940 | * int length : write data length |
| 1941 | * |
| 1942 | * return: 0 - length : real write data length |
| 1943 | * |
| 1944 | * |
| 1945 | * Function 21: Read data. |
| 1946 | * Syntax: |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1947 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | * int port : port number (0 - 127) |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1949 | * struct tty_struct *tty : tty for data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | * |
| 1951 | * return: 0 - length : real read data length |
| 1952 | * |
| 1953 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | * Function 24: Get the Tx buffer current queued data bytes |
| 1955 | * Syntax: |
| 1956 | * int MoxaPortTxQueue(int port); |
| 1957 | * int port : port number (0 - 127) |
| 1958 | * |
| 1959 | * return: .. : Tx buffer current queued data bytes |
| 1960 | * |
| 1961 | * |
| 1962 | * Function 25: Get the Tx buffer current free space |
| 1963 | * Syntax: |
| 1964 | * int MoxaPortTxFree(int port); |
| 1965 | * int port : port number (0 - 127) |
| 1966 | * |
| 1967 | * return: .. : Tx buffer current free space |
| 1968 | * |
| 1969 | * |
| 1970 | * Function 26: Get the Rx buffer current queued data bytes |
| 1971 | * Syntax: |
| 1972 | * int MoxaPortRxQueue(int port); |
| 1973 | * int port : port number (0 - 127) |
| 1974 | * |
| 1975 | * return: .. : Rx buffer current queued data bytes |
| 1976 | * |
| 1977 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | * Function 28: Disable port data transmission. |
| 1979 | * Syntax: |
| 1980 | * void MoxaPortTxDisable(int port); |
| 1981 | * int port : port number (0 - 127) |
| 1982 | * |
| 1983 | * |
| 1984 | * Function 29: Enable port data transmission. |
| 1985 | * Syntax: |
| 1986 | * void MoxaPortTxEnable(int port); |
| 1987 | * int port : port number (0 - 127) |
| 1988 | * |
| 1989 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | * Function 31: Get the received BREAK signal count and reset it. |
| 1991 | * Syntax: |
| 1992 | * int MoxaPortResetBrkCnt(int port); |
| 1993 | * int port : port number (0 - 127) |
| 1994 | * |
| 1995 | * return: 0 - .. : BREAK signal count |
| 1996 | * |
| 1997 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2000 | static void MoxaPortEnable(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | { |
| 2002 | void __iomem *ofsAddr; |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2003 | u16 lowwater = 512; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2005 | ofsAddr = port->tableAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | writew(lowwater, ofsAddr + Low_water); |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2007 | if (MOXA_IS_320(port->board)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2009 | else |
| 2010 | writew(readw(ofsAddr + HostStat) | WakeupBreak, |
| 2011 | ofsAddr + HostStat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | |
| 2013 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); |
| 2014 | moxafunc(ofsAddr, FC_FlushQueue, 2); |
| 2015 | |
| 2016 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); |
| 2017 | MoxaPortLineStatus(port); |
| 2018 | } |
| 2019 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2020 | static void MoxaPortDisable(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2022 | void __iomem *ofsAddr = port->tableAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | |
| 2024 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ |
| 2025 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); |
| 2026 | writew(0, ofsAddr + HostStat); |
| 2027 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); |
| 2028 | } |
| 2029 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2030 | static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | { |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2032 | void __iomem *ofsAddr = port->tableAddr; |
| 2033 | unsigned int clock, val; |
| 2034 | speed_t max; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2036 | max = MOXA_IS_320(port->board) ? 460800 : 921600; |
| 2037 | if (baud < 50) |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2038 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | if (baud > max) |
| 2040 | baud = max; |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2041 | clock = 921600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | val = clock / baud; |
| 2043 | moxafunc(ofsAddr, FC_SetBaud, val); |
| 2044 | baud = clock / val; |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2045 | return baud; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | } |
| 2047 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2048 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
| 2049 | speed_t baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | { |
| 2051 | void __iomem *ofsAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | tcflag_t mode = 0; |
| 2053 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2054 | ofsAddr = port->tableAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | |
| 2056 | mode = termio->c_cflag & CSIZE; |
| 2057 | if (mode == CS5) |
| 2058 | mode = MX_CS5; |
| 2059 | else if (mode == CS6) |
| 2060 | mode = MX_CS6; |
| 2061 | else if (mode == CS7) |
| 2062 | mode = MX_CS7; |
| 2063 | else if (mode == CS8) |
| 2064 | mode = MX_CS8; |
| 2065 | |
| 2066 | if (termio->c_cflag & CSTOPB) { |
| 2067 | if (mode == MX_CS5) |
| 2068 | mode |= MX_STOP15; |
| 2069 | else |
| 2070 | mode |= MX_STOP2; |
| 2071 | } else |
| 2072 | mode |= MX_STOP1; |
| 2073 | |
| 2074 | if (termio->c_cflag & PARENB) { |
Lars Kanis | d8dcbdd | 2017-11-28 11:55:17 +0100 | [diff] [blame] | 2075 | if (termio->c_cflag & PARODD) { |
| 2076 | if (termio->c_cflag & CMSPAR) |
| 2077 | mode |= MX_PARMARK; |
| 2078 | else |
| 2079 | mode |= MX_PARODD; |
| 2080 | } else { |
| 2081 | if (termio->c_cflag & CMSPAR) |
| 2082 | mode |= MX_PARSPACE; |
| 2083 | else |
| 2084 | mode |= MX_PAREVEN; |
| 2085 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | } else |
| 2087 | mode |= MX_PARNONE; |
| 2088 | |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2089 | moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | |
Jiri Slaby | 08d01c7 | 2008-04-30 00:53:47 -0700 | [diff] [blame] | 2091 | if (MOXA_IS_320(port->board) && baud >= 921600) |
| 2092 | return -1; |
| 2093 | |
Alan Cox | db1acaa | 2008-02-08 04:18:43 -0800 | [diff] [blame] | 2094 | baud = MoxaPortSetBaud(port, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | |
| 2096 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { |
Alan Cox | f5c5a36 | 2009-11-30 13:17:57 +0000 | [diff] [blame] | 2097 | spin_lock_irq(&moxafunc_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); |
| 2099 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); |
| 2100 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); |
Jiri Slaby | 6f56b658 | 2007-10-18 03:06:24 -0700 | [diff] [blame] | 2101 | moxa_wait_finish(ofsAddr); |
Alan Cox | a808ac0 | 2009-11-30 13:18:02 +0000 | [diff] [blame] | 2102 | spin_unlock_irq(&moxafunc_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | |
| 2104 | } |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2105 | return baud; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | } |
| 2107 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 2108 | static int MoxaPortGetLineOut(struct moxa_port *port, bool *dtr_active, |
| 2109 | bool *rts_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | { |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 2111 | if (dtr_active) |
| 2112 | *dtr_active = port->lineCtrl & DTR_ON; |
| 2113 | if (rts_active) |
| 2114 | *rts_active = port->lineCtrl & RTS_ON; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2115 | |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2116 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | } |
| 2118 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 2119 | static void MoxaPortLineCtrl(struct moxa_port *port, bool dtr_active, bool rts_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2120 | { |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2121 | u8 mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 2123 | if (dtr_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | mode |= DTR_ON; |
Ilpo Järvinen | 2d762da | 2023-01-17 11:03:58 +0200 | [diff] [blame] | 2125 | if (rts_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | mode |= RTS_ON; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2127 | port->lineCtrl = mode; |
| 2128 | moxafunc(port->tableAddr, FC_LineControl, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | } |
| 2130 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2131 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
| 2132 | int txflow, int rxflow, int txany) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2134 | int mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | if (rts) |
| 2137 | mode |= RTS_FlowCtl; |
| 2138 | if (cts) |
| 2139 | mode |= CTS_FlowCtl; |
| 2140 | if (txflow) |
| 2141 | mode |= Tx_FlowCtl; |
| 2142 | if (rxflow) |
| 2143 | mode |= Rx_FlowCtl; |
| 2144 | if (txany) |
| 2145 | mode |= IXM_IXANY; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2146 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | } |
| 2148 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2149 | static int MoxaPortLineStatus(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | { |
| 2151 | void __iomem *ofsAddr; |
| 2152 | int val; |
| 2153 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2154 | ofsAddr = port->tableAddr; |
Alan Cox | f5c5a36 | 2009-11-30 13:17:57 +0000 | [diff] [blame] | 2155 | if (MOXA_IS_320(port->board)) |
| 2156 | val = moxafuncret(ofsAddr, FC_LineStatus, 0); |
| 2157 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | val = readw(ofsAddr + FlagStat) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | val &= 0x0B; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 2160 | if (val & 8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | val |= 4; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 2162 | moxa_new_dcdstate(port, val & 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | val &= 7; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 2164 | return val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | } |
| 2166 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 2167 | static int MoxaPortWriteData(struct tty_struct *tty, |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2168 | const unsigned char *buffer, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 2170 | struct moxa_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | void __iomem *baseAddr, *ofsAddr, *ofs; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2172 | unsigned int c, total; |
| 2173 | u16 head, tail, tx_mask, spage, epage; |
| 2174 | u16 pageno, pageofs, bufhead; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2175 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2176 | ofsAddr = port->tableAddr; |
| 2177 | baseAddr = port->board->basemem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | tx_mask = readw(ofsAddr + TX_mask); |
| 2179 | spage = readw(ofsAddr + Page_txb); |
| 2180 | epage = readw(ofsAddr + EndPage_txb); |
| 2181 | tail = readw(ofsAddr + TXwptr); |
| 2182 | head = readw(ofsAddr + TXrptr); |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2183 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | if (c > len) |
| 2185 | c = len; |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 2186 | moxaLog.txcnt[port->port.tty->index] += c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | total = c; |
| 2188 | if (spage == epage) { |
| 2189 | bufhead = readw(ofsAddr + Ofs_txb); |
| 2190 | writew(spage, baseAddr + Control_reg); |
| 2191 | while (c > 0) { |
| 2192 | if (head > tail) |
| 2193 | len = head - tail - 1; |
| 2194 | else |
| 2195 | len = tx_mask + 1 - tail; |
| 2196 | len = (c > len) ? len : c; |
| 2197 | ofs = baseAddr + DynPage_addr + bufhead + tail; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2198 | memcpy_toio(ofs, buffer, len); |
| 2199 | buffer += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | tail = (tail + len) & tx_mask; |
| 2201 | c -= len; |
| 2202 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | pageno = spage + (tail >> 13); |
| 2205 | pageofs = tail & Page_mask; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2206 | while (c > 0) { |
| 2207 | len = Page_size - pageofs; |
| 2208 | if (len > c) |
| 2209 | len = c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | writeb(pageno, baseAddr + Control_reg); |
| 2211 | ofs = baseAddr + DynPage_addr + pageofs; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2212 | memcpy_toio(ofs, buffer, len); |
| 2213 | buffer += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2214 | if (++pageno == epage) |
| 2215 | pageno = spage; |
| 2216 | pageofs = 0; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2217 | c -= len; |
| 2218 | } |
| 2219 | tail = (tail + total) & tx_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | } |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2221 | writew(tail, ofsAddr + TXwptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2223 | return total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | } |
| 2225 | |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 2226 | static int MoxaPortReadData(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | { |
Alan Cox | 9de6a51 | 2008-07-16 21:56:02 +0100 | [diff] [blame] | 2228 | struct tty_struct *tty = port->port.tty; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2229 | unsigned char *dst; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | void __iomem *baseAddr, *ofsAddr, *ofs; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2231 | unsigned int count, len, total; |
| 2232 | u16 tail, rx_mask, spage, epage; |
| 2233 | u16 pageno, pageofs, bufhead, head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2235 | ofsAddr = port->tableAddr; |
| 2236 | baseAddr = port->board->basemem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | head = readw(ofsAddr + RXrptr); |
| 2238 | tail = readw(ofsAddr + RXwptr); |
| 2239 | rx_mask = readw(ofsAddr + RX_mask); |
| 2240 | spage = readw(ofsAddr + Page_rxb); |
| 2241 | epage = readw(ofsAddr + EndPage_rxb); |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2242 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | if (count == 0) |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2244 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2246 | total = count; |
Jiri Slaby | 7bcf97d | 2008-04-30 00:53:43 -0700 | [diff] [blame] | 2247 | moxaLog.rxcnt[tty->index] += total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | if (spage == epage) { |
| 2249 | bufhead = readw(ofsAddr + Ofs_rxb); |
| 2250 | writew(spage, baseAddr + Control_reg); |
| 2251 | while (count > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | ofs = baseAddr + DynPage_addr + bufhead + head; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2253 | len = (tail >= head) ? (tail - head) : |
| 2254 | (rx_mask + 1 - head); |
Jiri Slaby | 2f69335 | 2013-01-03 15:53:02 +0100 | [diff] [blame] | 2255 | len = tty_prepare_flip_string(&port->port, &dst, |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2256 | min(len, count)); |
| 2257 | memcpy_fromio(dst, ofs, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | head = (head + len) & rx_mask; |
| 2259 | count -= len; |
| 2260 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | pageno = spage + (head >> 13); |
| 2263 | pageofs = head & Page_mask; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2264 | while (count > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2265 | writew(pageno, baseAddr + Control_reg); |
| 2266 | ofs = baseAddr + DynPage_addr + pageofs; |
Jiri Slaby | 2f69335 | 2013-01-03 15:53:02 +0100 | [diff] [blame] | 2267 | len = tty_prepare_flip_string(&port->port, &dst, |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2268 | min(Page_size - pageofs, count)); |
| 2269 | memcpy_fromio(dst, ofs, len); |
| 2270 | |
| 2271 | count -= len; |
| 2272 | pageofs = (pageofs + len) & Page_mask; |
| 2273 | if (pageofs == 0 && ++pageno == epage) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | pageno = spage; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2275 | } |
| 2276 | head = (head + total) & rx_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2277 | } |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2278 | writew(head, ofsAddr + RXrptr); |
| 2279 | if (readb(ofsAddr + FlagStat) & Xoff_state) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | moxaLowWaterChk = 1; |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2281 | port->lowChkFlag = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | } |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2283 | return total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | } |
| 2285 | |
| 2286 | |
Jiri Slaby | fff4ef1 | 2021-05-05 11:19:19 +0200 | [diff] [blame] | 2287 | static unsigned int MoxaPortTxQueue(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2289 | void __iomem *ofsAddr = port->tableAddr; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2290 | u16 rptr, wptr, mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | rptr = readw(ofsAddr + TXrptr); |
| 2293 | wptr = readw(ofsAddr + TXwptr); |
| 2294 | mask = readw(ofsAddr + TX_mask); |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2295 | return (wptr - rptr) & mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | } |
| 2297 | |
Jiri Slaby | 03b3b1a | 2021-05-05 11:19:15 +0200 | [diff] [blame] | 2298 | static unsigned int MoxaPortTxFree(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2300 | void __iomem *ofsAddr = port->tableAddr; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2301 | u16 rptr, wptr, mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | rptr = readw(ofsAddr + TXrptr); |
| 2304 | wptr = readw(ofsAddr + TXwptr); |
| 2305 | mask = readw(ofsAddr + TX_mask); |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2306 | return mask - ((wptr - rptr) & mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | } |
| 2308 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2309 | static int MoxaPortRxQueue(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2311 | void __iomem *ofsAddr = port->tableAddr; |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2312 | u16 rptr, wptr, mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | rptr = readw(ofsAddr + RXrptr); |
| 2315 | wptr = readw(ofsAddr + RXwptr); |
| 2316 | mask = readw(ofsAddr + RX_mask); |
Jiri Slaby | 2108eba | 2008-04-30 00:53:44 -0700 | [diff] [blame] | 2317 | return (wptr - rptr) & mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | } |
| 2319 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2320 | static void MoxaPortTxDisable(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2322 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | } |
| 2324 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2325 | static void MoxaPortTxEnable(struct moxa_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2327 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | } |
| 2329 | |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2330 | static int moxa_get_serial_info(struct tty_struct *tty, |
| 2331 | struct serial_struct *ss) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | { |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2333 | struct moxa_port *info = tty->driver_data; |
| 2334 | |
| 2335 | if (tty->index == MAX_PORTS) |
| 2336 | return -EINVAL; |
| 2337 | if (!info) |
| 2338 | return -ENODEV; |
| 2339 | mutex_lock(&info->port.mutex); |
Dan Carpenter | 322003b | 2021-08-25 10:24:05 +0300 | [diff] [blame] | 2340 | ss->type = info->type; |
| 2341 | ss->line = info->port.tty->index; |
| 2342 | ss->flags = info->port.flags; |
| 2343 | ss->baud_base = 921600; |
Johan Hovold | 6e70b73 | 2021-04-07 12:23:28 +0200 | [diff] [blame] | 2344 | ss->close_delay = jiffies_to_msecs(info->port.close_delay) / 10; |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2345 | mutex_unlock(&info->port.mutex); |
| 2346 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | } |
| 2348 | |
| 2349 | |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2350 | static int moxa_set_serial_info(struct tty_struct *tty, |
| 2351 | struct serial_struct *ss) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | { |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2353 | struct moxa_port *info = tty->driver_data; |
Johan Hovold | dc8c843 | 2021-04-07 12:23:29 +0200 | [diff] [blame] | 2354 | unsigned int close_delay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2356 | if (tty->index == MAX_PORTS) |
| 2357 | return -EINVAL; |
| 2358 | if (!info) |
| 2359 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | |
Johan Hovold | dc8c843 | 2021-04-07 12:23:29 +0200 | [diff] [blame] | 2361 | close_delay = msecs_to_jiffies(ss->close_delay * 10); |
| 2362 | |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2363 | mutex_lock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | if (!capable(CAP_SYS_ADMIN)) { |
Johan Hovold | dc8c843 | 2021-04-07 12:23:29 +0200 | [diff] [blame] | 2365 | if (close_delay != info->port.close_delay || |
| 2366 | ss->type != info->type || |
| 2367 | ((ss->flags & ~ASYNC_USR_MASK) != |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2368 | (info->port.flags & ~ASYNC_USR_MASK))) { |
| 2369 | mutex_unlock(&info->port.mutex); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2370 | return -EPERM; |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2371 | } |
Johan Hovold | dc8c843 | 2021-04-07 12:23:29 +0200 | [diff] [blame] | 2372 | } else { |
| 2373 | info->port.close_delay = close_delay; |
| 2374 | |
| 2375 | MoxaSetFifo(info, ss->type == PORT_16550A); |
| 2376 | |
| 2377 | info->type = ss->type; |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2378 | } |
Al Viro | 1c729ab | 2018-09-11 22:01:00 -0400 | [diff] [blame] | 2379 | mutex_unlock(&info->port.mutex); |
Jiri Slaby | eaa95a8 | 2008-04-30 00:53:46 -0700 | [diff] [blame] | 2380 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2381 | } |
| 2382 | |
| 2383 | |
| 2384 | |
| 2385 | /***************************************************************************** |
| 2386 | * Static local functions: * |
| 2387 | *****************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2388 | |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2389 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2390 | { |
Jiri Slaby | b4173f4 | 2008-04-30 00:53:40 -0700 | [diff] [blame] | 2391 | void __iomem *ofsAddr = port->tableAddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | |
| 2393 | if (!enable) { |
| 2394 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); |
| 2395 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); |
| 2396 | } else { |
| 2397 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); |
| 2398 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); |
| 2399 | } |
| 2400 | } |