Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * mxser.c -- MOXA Smartio/Industio family multiport serial driver. |
| 3 | * |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 4 | * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com). |
| 5 | * Copyright (C) 2006-2008 Jiri Slaby <jirislaby@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 7 | * This code is loosely based on the 1.8 moxa driver which is based on |
| 8 | * Linux serial driver, written by Linus Torvalds, Theodore T'so and |
| 9 | * others. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 14 | * (at your option) any later version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox |
Alan Cox | 8eb04cf | 2008-11-11 14:48:44 +0000 | [diff] [blame] | 17 | * <alan@lxorguk.ukuu.org.uk>. The original 1.8 code is available on |
| 18 | * www.moxa.com. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | * - Fixed x86_64 cleanness |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | */ |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/errno.h> |
| 24 | #include <linux/signal.h> |
| 25 | #include <linux/sched.h> |
| 26 | #include <linux/timer.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/tty.h> |
| 29 | #include <linux/tty_flip.h> |
| 30 | #include <linux/serial.h> |
| 31 | #include <linux/serial_reg.h> |
| 32 | #include <linux/major.h> |
| 33 | #include <linux/string.h> |
| 34 | #include <linux/fcntl.h> |
| 35 | #include <linux/ptrace.h> |
| 36 | #include <linux/gfp.h> |
| 37 | #include <linux/ioport.h> |
| 38 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/delay.h> |
| 40 | #include <linux/pci.h> |
Jiri Slaby | 1977f03 | 2007-10-18 23:40:25 -0700 | [diff] [blame] | 41 | #include <linux/bitops.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #include <asm/system.h> |
| 44 | #include <asm/io.h> |
| 45 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/uaccess.h> |
| 47 | |
| 48 | #include "mxser.h" |
| 49 | |
Jiri Slaby | e129def | 2008-07-22 11:20:34 +0100 | [diff] [blame] | 50 | #define MXSER_VERSION "2.0.4" /* 1.12 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define MXSERMAJOR 174 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define MXSER_BOARDS 4 /* Max. boards */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 55 | #define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD) |
| 56 | #define MXSER_ISR_PASS_LIMIT 100 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 58 | /*CheckIsMoxaMust return value*/ |
| 59 | #define MOXA_OTHER_UART 0x00 |
| 60 | #define MOXA_MUST_MU150_HWID 0x01 |
| 61 | #define MOXA_MUST_MU860_HWID 0x02 |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #define WAKEUP_CHARS 256 |
| 64 | |
| 65 | #define UART_MCR_AFE 0x20 |
| 66 | #define UART_LSR_SPECIAL 0x1E |
| 67 | |
Jiri Slaby | e129def | 2008-07-22 11:20:34 +0100 | [diff] [blame] | 68 | #define PCI_DEVICE_ID_POS104UL 0x1044 |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 69 | #define PCI_DEVICE_ID_CB108 0x1080 |
Jiri Slaby | e129def | 2008-07-22 11:20:34 +0100 | [diff] [blame] | 70 | #define PCI_DEVICE_ID_CP102UF 0x1023 |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 71 | #define PCI_DEVICE_ID_CB114 0x1142 |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 72 | #define PCI_DEVICE_ID_CP114UL 0x1143 |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 73 | #define PCI_DEVICE_ID_CB134I 0x1341 |
| 74 | #define PCI_DEVICE_ID_CP138U 0x1380 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | #define C168_ASIC_ID 1 |
| 78 | #define C104_ASIC_ID 2 |
| 79 | #define C102_ASIC_ID 0xB |
| 80 | #define CI132_ASIC_ID 4 |
| 81 | #define CI134_ASIC_ID 3 |
| 82 | #define CI104J_ASIC_ID 5 |
| 83 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 84 | #define MXSER_HIGHBAUD 1 |
| 85 | #define MXSER_HAS2 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 87 | /* This is only for PCI */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 88 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | int type; |
| 90 | int tx_fifo; |
| 91 | int rx_fifo; |
| 92 | int xmit_fifo_size; |
| 93 | int rx_high_water; |
| 94 | int rx_trigger; |
| 95 | int rx_low_water; |
| 96 | long max_baud; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 97 | } Gpci_uart_info[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, |
| 99 | {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, |
| 100 | {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} |
| 101 | }; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 102 | #define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 104 | struct mxser_cardinfo { |
| 105 | char *name; |
| 106 | unsigned int nports; |
| 107 | unsigned int flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | }; |
| 109 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 110 | static const struct mxser_cardinfo mxser_cards[] = { |
| 111 | /* 0*/ { "C168 series", 8, }, |
| 112 | { "C104 series", 4, }, |
| 113 | { "CI-104J series", 4, }, |
| 114 | { "C168H/PCI series", 8, }, |
| 115 | { "C104H/PCI series", 4, }, |
| 116 | /* 5*/ { "C102 series", 4, MXSER_HAS2 }, /* C102-ISA */ |
| 117 | { "CI-132 series", 4, MXSER_HAS2 }, |
| 118 | { "CI-134 series", 4, }, |
| 119 | { "CP-132 series", 2, }, |
| 120 | { "CP-114 series", 4, }, |
| 121 | /*10*/ { "CT-114 series", 4, }, |
| 122 | { "CP-102 series", 2, MXSER_HIGHBAUD }, |
| 123 | { "CP-104U series", 4, }, |
| 124 | { "CP-168U series", 8, }, |
| 125 | { "CP-132U series", 2, }, |
| 126 | /*15*/ { "CP-134U series", 4, }, |
| 127 | { "CP-104JU series", 4, }, |
| 128 | { "Moxa UC7000 Serial", 8, }, /* RC7000 */ |
| 129 | { "CP-118U series", 8, }, |
| 130 | { "CP-102UL series", 2, }, |
| 131 | /*20*/ { "CP-102U series", 2, }, |
| 132 | { "CP-118EL series", 8, }, |
| 133 | { "CP-168EL series", 8, }, |
| 134 | { "CP-104EL series", 4, }, |
| 135 | { "CB-108 series", 8, }, |
| 136 | /*25*/ { "CB-114 series", 4, }, |
| 137 | { "CB-134I series", 4, }, |
| 138 | { "CP-138U series", 8, }, |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 139 | { "POS-104UL series", 4, }, |
Jiri Slaby | e129def | 2008-07-22 11:20:34 +0100 | [diff] [blame] | 140 | { "CP-114UL series", 4, }, |
| 141 | /*30*/ { "CP-102UF series", 2, } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 142 | }; |
| 143 | |
| 144 | /* driver_data correspond to the lines in the structure above |
| 145 | see also ISA probe function before you change something */ |
| 146 | static struct pci_device_id mxser_pcibrds[] = { |
| 147 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168), .driver_data = 3 }, |
| 148 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104), .driver_data = 4 }, |
| 149 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132), .driver_data = 8 }, |
| 150 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114), .driver_data = 9 }, |
| 151 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114), .driver_data = 10 }, |
| 152 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102), .driver_data = 11 }, |
| 153 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U), .driver_data = 12 }, |
| 154 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U), .driver_data = 13 }, |
| 155 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U), .driver_data = 14 }, |
| 156 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U), .driver_data = 15 }, |
| 157 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 }, |
| 158 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000), .driver_data = 17 }, |
| 159 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U), .driver_data = 18 }, |
| 160 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 }, |
| 161 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U), .driver_data = 20 }, |
| 162 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 }, |
| 163 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 }, |
| 164 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 }, |
| 165 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108), .driver_data = 24 }, |
| 166 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114), .driver_data = 25 }, |
| 167 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I), .driver_data = 26 }, |
| 168 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U), .driver_data = 27 }, |
| 169 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 }, |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 170 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 }, |
Jiri Slaby | e129def | 2008-07-22 11:20:34 +0100 | [diff] [blame] | 171 | { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 }, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 172 | { } |
| 173 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | MODULE_DEVICE_TABLE(pci, mxser_pcibrds); |
| 175 | |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 176 | static unsigned long ioaddr[MXSER_BOARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | static int ttymajor = MXSERMAJOR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | /* Variables for insmod */ |
| 180 | |
| 181 | MODULE_AUTHOR("Casper Yang"); |
| 182 | MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 183 | module_param_array(ioaddr, ulong, NULL, 0); |
| 184 | MODULE_PARM_DESC(ioaddr, "ISA io addresses to look for a moxa board"); |
Rusty Russell | 8d3b33f | 2006-03-25 03:07:05 -0800 | [diff] [blame] | 185 | module_param(ttymajor, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | MODULE_LICENSE("GPL"); |
| 187 | |
| 188 | struct mxser_log { |
| 189 | int tick; |
| 190 | unsigned long rxcnt[MXSER_PORTS]; |
| 191 | unsigned long txcnt[MXSER_PORTS]; |
| 192 | }; |
| 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | struct mxser_mon { |
| 195 | unsigned long rxcnt; |
| 196 | unsigned long txcnt; |
| 197 | unsigned long up_rxcnt; |
| 198 | unsigned long up_txcnt; |
| 199 | int modem_status; |
| 200 | unsigned char hold_reason; |
| 201 | }; |
| 202 | |
| 203 | struct mxser_mon_ext { |
| 204 | unsigned long rx_cnt[32]; |
| 205 | unsigned long tx_cnt[32]; |
| 206 | unsigned long up_rxcnt[32]; |
| 207 | unsigned long up_txcnt[32]; |
| 208 | int modem_status[32]; |
| 209 | |
| 210 | long baudrate[32]; |
| 211 | int databits[32]; |
| 212 | int stopbits[32]; |
| 213 | int parity[32]; |
| 214 | int flowctrl[32]; |
| 215 | int fifo[32]; |
| 216 | int iftype[32]; |
| 217 | }; |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 218 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 219 | struct mxser_board; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 221 | struct mxser_port { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 222 | struct tty_port port; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 223 | struct mxser_board *board; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 224 | |
| 225 | unsigned long ioaddr; |
| 226 | unsigned long opmode_ioaddr; |
| 227 | int max_baud; |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | int rx_high_water; |
| 230 | int rx_trigger; /* Rx fifo trigger level */ |
| 231 | int rx_low_water; |
| 232 | int baud_base; /* max. speed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | int type; /* UART type */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 234 | |
| 235 | int x_char; /* xon/xoff character */ |
| 236 | int IER; /* Interrupt Enable Register */ |
| 237 | int MCR; /* Modem control register */ |
| 238 | |
| 239 | unsigned char stop_rx; |
| 240 | unsigned char ldisc_stop_rx; |
| 241 | |
| 242 | int custom_divisor; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 243 | unsigned char err_shadow; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 244 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 245 | struct async_icount icount; /* kernel counters for 4 input interrupts */ |
| 246 | int timeout; |
| 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | int read_status_mask; |
| 249 | int ignore_status_mask; |
| 250 | int xmit_fifo_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | int xmit_head; |
| 252 | int xmit_tail; |
| 253 | int xmit_cnt; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 254 | |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 255 | struct ktermios normal_termios; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | struct mxser_mon mon_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | spinlock_t slock; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 260 | wait_queue_head_t delta_msr_wait; |
| 261 | }; |
| 262 | |
| 263 | struct mxser_board { |
| 264 | unsigned int idx; |
| 265 | int irq; |
| 266 | const struct mxser_cardinfo *info; |
| 267 | unsigned long vector; |
| 268 | unsigned long vector_mask; |
| 269 | |
| 270 | int chip_flag; |
| 271 | int uart_type; |
| 272 | |
| 273 | struct mxser_port ports[MXSER_PORTS_PER_BOARD]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | }; |
| 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | struct mxser_mstatus { |
| 277 | tcflag_t cflag; |
| 278 | int cts; |
| 279 | int dsr; |
| 280 | int ri; |
| 281 | int dcd; |
| 282 | }; |
| 283 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 284 | static struct mxser_board mxser_boards[MXSER_BOARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | static struct tty_driver *mxvar_sdriver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | static struct mxser_log mxvar_log; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | static int mxser_set_baud_method[MXSER_PORTS + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 289 | static void mxser_enable_must_enchance_mode(unsigned long baseio) |
| 290 | { |
| 291 | u8 oldlcr; |
| 292 | u8 efr; |
| 293 | |
| 294 | oldlcr = inb(baseio + UART_LCR); |
| 295 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 296 | |
| 297 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 298 | efr |= MOXA_MUST_EFR_EFRB_ENABLE; |
| 299 | |
| 300 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 301 | outb(oldlcr, baseio + UART_LCR); |
| 302 | } |
| 303 | |
| 304 | static void mxser_disable_must_enchance_mode(unsigned long baseio) |
| 305 | { |
| 306 | u8 oldlcr; |
| 307 | u8 efr; |
| 308 | |
| 309 | oldlcr = inb(baseio + UART_LCR); |
| 310 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 311 | |
| 312 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 313 | efr &= ~MOXA_MUST_EFR_EFRB_ENABLE; |
| 314 | |
| 315 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 316 | outb(oldlcr, baseio + UART_LCR); |
| 317 | } |
| 318 | |
| 319 | static void mxser_set_must_xon1_value(unsigned long baseio, u8 value) |
| 320 | { |
| 321 | u8 oldlcr; |
| 322 | u8 efr; |
| 323 | |
| 324 | oldlcr = inb(baseio + UART_LCR); |
| 325 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 326 | |
| 327 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 328 | efr &= ~MOXA_MUST_EFR_BANK_MASK; |
| 329 | efr |= MOXA_MUST_EFR_BANK0; |
| 330 | |
| 331 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 332 | outb(value, baseio + MOXA_MUST_XON1_REGISTER); |
| 333 | outb(oldlcr, baseio + UART_LCR); |
| 334 | } |
| 335 | |
| 336 | static void mxser_set_must_xoff1_value(unsigned long baseio, u8 value) |
| 337 | { |
| 338 | u8 oldlcr; |
| 339 | u8 efr; |
| 340 | |
| 341 | oldlcr = inb(baseio + UART_LCR); |
| 342 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 343 | |
| 344 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 345 | efr &= ~MOXA_MUST_EFR_BANK_MASK; |
| 346 | efr |= MOXA_MUST_EFR_BANK0; |
| 347 | |
| 348 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 349 | outb(value, baseio + MOXA_MUST_XOFF1_REGISTER); |
| 350 | outb(oldlcr, baseio + UART_LCR); |
| 351 | } |
| 352 | |
| 353 | static void mxser_set_must_fifo_value(struct mxser_port *info) |
| 354 | { |
| 355 | u8 oldlcr; |
| 356 | u8 efr; |
| 357 | |
| 358 | oldlcr = inb(info->ioaddr + UART_LCR); |
| 359 | outb(MOXA_MUST_ENTER_ENCHANCE, info->ioaddr + UART_LCR); |
| 360 | |
| 361 | efr = inb(info->ioaddr + MOXA_MUST_EFR_REGISTER); |
| 362 | efr &= ~MOXA_MUST_EFR_BANK_MASK; |
| 363 | efr |= MOXA_MUST_EFR_BANK1; |
| 364 | |
| 365 | outb(efr, info->ioaddr + MOXA_MUST_EFR_REGISTER); |
| 366 | outb((u8)info->rx_high_water, info->ioaddr + MOXA_MUST_RBRTH_REGISTER); |
| 367 | outb((u8)info->rx_trigger, info->ioaddr + MOXA_MUST_RBRTI_REGISTER); |
| 368 | outb((u8)info->rx_low_water, info->ioaddr + MOXA_MUST_RBRTL_REGISTER); |
| 369 | outb(oldlcr, info->ioaddr + UART_LCR); |
| 370 | } |
| 371 | |
| 372 | static void mxser_set_must_enum_value(unsigned long baseio, u8 value) |
| 373 | { |
| 374 | u8 oldlcr; |
| 375 | u8 efr; |
| 376 | |
| 377 | oldlcr = inb(baseio + UART_LCR); |
| 378 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 379 | |
| 380 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 381 | efr &= ~MOXA_MUST_EFR_BANK_MASK; |
| 382 | efr |= MOXA_MUST_EFR_BANK2; |
| 383 | |
| 384 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 385 | outb(value, baseio + MOXA_MUST_ENUM_REGISTER); |
| 386 | outb(oldlcr, baseio + UART_LCR); |
| 387 | } |
| 388 | |
| 389 | static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) |
| 390 | { |
| 391 | u8 oldlcr; |
| 392 | u8 efr; |
| 393 | |
| 394 | oldlcr = inb(baseio + UART_LCR); |
| 395 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 396 | |
| 397 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 398 | efr &= ~MOXA_MUST_EFR_BANK_MASK; |
| 399 | efr |= MOXA_MUST_EFR_BANK2; |
| 400 | |
| 401 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 402 | *pId = inb(baseio + MOXA_MUST_HWID_REGISTER); |
| 403 | outb(oldlcr, baseio + UART_LCR); |
| 404 | } |
| 405 | |
| 406 | static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio) |
| 407 | { |
| 408 | u8 oldlcr; |
| 409 | u8 efr; |
| 410 | |
| 411 | oldlcr = inb(baseio + UART_LCR); |
| 412 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 413 | |
| 414 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 415 | efr &= ~MOXA_MUST_EFR_SF_MASK; |
| 416 | |
| 417 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 418 | outb(oldlcr, baseio + UART_LCR); |
| 419 | } |
| 420 | |
| 421 | static void mxser_enable_must_tx_software_flow_control(unsigned long baseio) |
| 422 | { |
| 423 | u8 oldlcr; |
| 424 | u8 efr; |
| 425 | |
| 426 | oldlcr = inb(baseio + UART_LCR); |
| 427 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 428 | |
| 429 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 430 | efr &= ~MOXA_MUST_EFR_SF_TX_MASK; |
| 431 | efr |= MOXA_MUST_EFR_SF_TX1; |
| 432 | |
| 433 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 434 | outb(oldlcr, baseio + UART_LCR); |
| 435 | } |
| 436 | |
| 437 | static void mxser_disable_must_tx_software_flow_control(unsigned long baseio) |
| 438 | { |
| 439 | u8 oldlcr; |
| 440 | u8 efr; |
| 441 | |
| 442 | oldlcr = inb(baseio + UART_LCR); |
| 443 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 444 | |
| 445 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 446 | efr &= ~MOXA_MUST_EFR_SF_TX_MASK; |
| 447 | |
| 448 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 449 | outb(oldlcr, baseio + UART_LCR); |
| 450 | } |
| 451 | |
| 452 | static void mxser_enable_must_rx_software_flow_control(unsigned long baseio) |
| 453 | { |
| 454 | u8 oldlcr; |
| 455 | u8 efr; |
| 456 | |
| 457 | oldlcr = inb(baseio + UART_LCR); |
| 458 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 459 | |
| 460 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 461 | efr &= ~MOXA_MUST_EFR_SF_RX_MASK; |
| 462 | efr |= MOXA_MUST_EFR_SF_RX1; |
| 463 | |
| 464 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 465 | outb(oldlcr, baseio + UART_LCR); |
| 466 | } |
| 467 | |
| 468 | static void mxser_disable_must_rx_software_flow_control(unsigned long baseio) |
| 469 | { |
| 470 | u8 oldlcr; |
| 471 | u8 efr; |
| 472 | |
| 473 | oldlcr = inb(baseio + UART_LCR); |
| 474 | outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); |
| 475 | |
| 476 | efr = inb(baseio + MOXA_MUST_EFR_REGISTER); |
| 477 | efr &= ~MOXA_MUST_EFR_SF_RX_MASK; |
| 478 | |
| 479 | outb(efr, baseio + MOXA_MUST_EFR_REGISTER); |
| 480 | outb(oldlcr, baseio + UART_LCR); |
| 481 | } |
| 482 | |
Jesper Juhl | b8cc554 | 2007-10-18 03:06:03 -0700 | [diff] [blame] | 483 | #ifdef CONFIG_PCI |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 484 | static int __devinit CheckIsMoxaMust(unsigned long io) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | { |
| 486 | u8 oldmcr, hwid; |
| 487 | int i; |
| 488 | |
| 489 | outb(0, io + UART_LCR); |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 490 | mxser_disable_must_enchance_mode(io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | oldmcr = inb(io + UART_MCR); |
| 492 | outb(0, io + UART_MCR); |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 493 | mxser_set_must_xon1_value(io, 0x11); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | if ((hwid = inb(io + UART_MCR)) != 0) { |
| 495 | outb(oldmcr, io + UART_MCR); |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 496 | return MOXA_OTHER_UART; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | } |
| 498 | |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 499 | mxser_get_must_hardware_id(io, &hwid); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 500 | for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */ |
| 501 | if (hwid == Gpci_uart_info[i].type) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 502 | return (int)hwid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } |
| 504 | return MOXA_OTHER_UART; |
| 505 | } |
Jesper Juhl | b8cc554 | 2007-10-18 03:06:03 -0700 | [diff] [blame] | 506 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 508 | static void process_txrx_fifo(struct mxser_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
| 510 | int i; |
| 511 | |
| 512 | if ((info->type == PORT_16450) || (info->type == PORT_8250)) { |
| 513 | info->rx_trigger = 1; |
| 514 | info->rx_high_water = 1; |
| 515 | info->rx_low_water = 1; |
| 516 | info->xmit_fifo_size = 1; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 517 | } else |
| 518 | for (i = 0; i < UART_INFO_NUM; i++) |
| 519 | if (info->board->chip_flag == Gpci_uart_info[i].type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | info->rx_trigger = Gpci_uart_info[i].rx_trigger; |
| 521 | info->rx_low_water = Gpci_uart_info[i].rx_low_water; |
| 522 | info->rx_high_water = Gpci_uart_info[i].rx_high_water; |
| 523 | info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; |
| 524 | break; |
| 525 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
| 527 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 528 | static unsigned char mxser_get_msr(int baseaddr, int mode, int port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | { |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 530 | static unsigned char mxser_msr[MXSER_PORTS + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | unsigned char status = 0; |
| 532 | |
| 533 | status = inb(baseaddr + UART_MSR); |
| 534 | |
| 535 | mxser_msr[port] &= 0x0F; |
| 536 | mxser_msr[port] |= status; |
| 537 | status = mxser_msr[port]; |
| 538 | if (mode) |
| 539 | mxser_msr[port] = 0; |
| 540 | |
| 541 | return status; |
| 542 | } |
| 543 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 544 | static int mxser_carrier_raised(struct tty_port *port) |
| 545 | { |
| 546 | struct mxser_port *mp = container_of(port, struct mxser_port, port); |
| 547 | return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0; |
| 548 | } |
| 549 | |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 550 | static void mxser_raise_dtr_rts(struct tty_port *port) |
| 551 | { |
| 552 | struct mxser_port *mp = container_of(port, struct mxser_port, port); |
| 553 | unsigned long flags; |
| 554 | |
| 555 | spin_lock_irqsave(&mp->slock, flags); |
| 556 | outb(inb(mp->ioaddr + UART_MCR) | |
| 557 | UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR); |
| 558 | spin_unlock_irqrestore(&mp->slock, flags); |
| 559 | } |
| 560 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 561 | static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 562 | struct mxser_port *mp) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 563 | { |
| 564 | DECLARE_WAITQUEUE(wait, current); |
| 565 | int retval; |
| 566 | int do_clocal = 0; |
| 567 | unsigned long flags; |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 568 | int cd; |
| 569 | struct tty_port *port = &mp->port; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 570 | |
| 571 | /* |
| 572 | * If non-blocking mode is set, or the port is not enabled, |
| 573 | * then make the check up front and then exit. |
| 574 | */ |
| 575 | if ((filp->f_flags & O_NONBLOCK) || |
| 576 | test_bit(TTY_IO_ERROR, &tty->flags)) { |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 577 | port->flags |= ASYNC_NORMAL_ACTIVE; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | if (tty->termios->c_cflag & CLOCAL) |
| 582 | do_clocal = 1; |
| 583 | |
| 584 | /* |
| 585 | * Block waiting for the carrier detect and the line to become |
| 586 | * free (i.e., not in use by the callout). While we are in |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 587 | * this loop, port->count is dropped by one, so that |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 588 | * mxser_close() knows when to free things. We restore it upon |
| 589 | * exit, either normal or abnormal. |
| 590 | */ |
| 591 | retval = 0; |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 592 | add_wait_queue(&port->open_wait, &wait); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 593 | |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 594 | spin_lock_irqsave(&port->lock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 595 | if (!tty_hung_up_p(filp)) |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 596 | port->count--; |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 597 | port->blocked_open++; |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 598 | spin_unlock_irqrestore(&port->lock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 599 | while (1) { |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 600 | tty_port_raise_dtr_rts(port); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 601 | set_current_state(TASK_INTERRUPTIBLE); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 602 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
| 603 | if (port->flags & ASYNC_HUP_NOTIFY) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 604 | retval = -EAGAIN; |
| 605 | else |
| 606 | retval = -ERESTARTSYS; |
| 607 | break; |
| 608 | } |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 609 | cd = tty_port_carrier_raised(port); |
| 610 | if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd)) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 611 | break; |
| 612 | if (signal_pending(current)) { |
| 613 | retval = -ERESTARTSYS; |
| 614 | break; |
| 615 | } |
| 616 | schedule(); |
| 617 | } |
| 618 | set_current_state(TASK_RUNNING); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 619 | remove_wait_queue(&port->open_wait, &wait); |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 620 | spin_lock_irqsave(&port->lock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 621 | if (!tty_hung_up_p(filp)) |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 622 | port->count++; |
| 623 | port->blocked_open--; |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 624 | if (retval == 0) |
| 625 | port->flags |= ASYNC_NORMAL_ACTIVE; |
| 626 | spin_unlock_irqrestore(&port->lock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 627 | return 0; |
| 628 | } |
| 629 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 630 | static int mxser_set_baud(struct tty_struct *tty, long newspd) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 631 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 632 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 633 | int quot = 0, baud; |
| 634 | unsigned char cval; |
| 635 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 636 | if (!info->ioaddr) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 637 | return -1; |
| 638 | |
| 639 | if (newspd > info->max_baud) |
| 640 | return -1; |
| 641 | |
| 642 | if (newspd == 134) { |
| 643 | quot = 2 * info->baud_base / 269; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 644 | tty_encode_baud_rate(tty, 134, 134); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 645 | } else if (newspd) { |
| 646 | quot = info->baud_base / newspd; |
| 647 | if (quot == 0) |
| 648 | quot = 1; |
| 649 | baud = info->baud_base/quot; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 650 | tty_encode_baud_rate(tty, baud, baud); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 651 | } else { |
| 652 | quot = 0; |
| 653 | } |
| 654 | |
| 655 | info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); |
| 656 | info->timeout += HZ / 50; /* Add .02 seconds of slop */ |
| 657 | |
| 658 | if (quot) { |
| 659 | info->MCR |= UART_MCR_DTR; |
| 660 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 661 | } else { |
| 662 | info->MCR &= ~UART_MCR_DTR; |
| 663 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | cval = inb(info->ioaddr + UART_LCR); |
| 668 | |
| 669 | outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */ |
| 670 | |
| 671 | outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */ |
| 672 | outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */ |
| 673 | outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */ |
| 674 | |
| 675 | #ifdef BOTHER |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 676 | if (C_BAUD(tty) == BOTHER) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 677 | quot = info->baud_base % newspd; |
| 678 | quot *= 8; |
| 679 | if (quot % newspd > newspd / 2) { |
| 680 | quot /= newspd; |
| 681 | quot++; |
| 682 | } else |
| 683 | quot /= newspd; |
| 684 | |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 685 | mxser_set_must_enum_value(info->ioaddr, quot); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 686 | } else |
| 687 | #endif |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 688 | mxser_set_must_enum_value(info->ioaddr, 0); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 689 | |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | /* |
| 694 | * This routine is called to set the UART divisor registers to match |
| 695 | * the specified baud rate for a serial port. |
| 696 | */ |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 697 | static int mxser_change_speed(struct tty_struct *tty, |
| 698 | struct ktermios *old_termios) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 699 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 700 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 701 | unsigned cflag, cval, fcr; |
| 702 | int ret = 0; |
| 703 | unsigned char status; |
| 704 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 705 | cflag = tty->termios->c_cflag; |
| 706 | if (!info->ioaddr) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 707 | return ret; |
| 708 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 709 | if (mxser_set_baud_method[tty->index] == 0) |
| 710 | mxser_set_baud(tty, tty_get_baud_rate(tty)); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 711 | |
| 712 | /* byte size and parity */ |
| 713 | switch (cflag & CSIZE) { |
| 714 | case CS5: |
| 715 | cval = 0x00; |
| 716 | break; |
| 717 | case CS6: |
| 718 | cval = 0x01; |
| 719 | break; |
| 720 | case CS7: |
| 721 | cval = 0x02; |
| 722 | break; |
| 723 | case CS8: |
| 724 | cval = 0x03; |
| 725 | break; |
| 726 | default: |
| 727 | cval = 0x00; |
| 728 | break; /* too keep GCC shut... */ |
| 729 | } |
| 730 | if (cflag & CSTOPB) |
| 731 | cval |= 0x04; |
| 732 | if (cflag & PARENB) |
| 733 | cval |= UART_LCR_PARITY; |
| 734 | if (!(cflag & PARODD)) |
| 735 | cval |= UART_LCR_EPAR; |
| 736 | if (cflag & CMSPAR) |
| 737 | cval |= UART_LCR_SPAR; |
| 738 | |
| 739 | if ((info->type == PORT_8250) || (info->type == PORT_16450)) { |
| 740 | if (info->board->chip_flag) { |
| 741 | fcr = UART_FCR_ENABLE_FIFO; |
| 742 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 743 | mxser_set_must_fifo_value(info); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 744 | } else |
| 745 | fcr = 0; |
| 746 | } else { |
| 747 | fcr = UART_FCR_ENABLE_FIFO; |
| 748 | if (info->board->chip_flag) { |
| 749 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 750 | mxser_set_must_fifo_value(info); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 751 | } else { |
| 752 | switch (info->rx_trigger) { |
| 753 | case 1: |
| 754 | fcr |= UART_FCR_TRIGGER_1; |
| 755 | break; |
| 756 | case 4: |
| 757 | fcr |= UART_FCR_TRIGGER_4; |
| 758 | break; |
| 759 | case 8: |
| 760 | fcr |= UART_FCR_TRIGGER_8; |
| 761 | break; |
| 762 | default: |
| 763 | fcr |= UART_FCR_TRIGGER_14; |
| 764 | break; |
| 765 | } |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | /* CTS flow control flag and modem status interrupts */ |
| 770 | info->IER &= ~UART_IER_MSI; |
| 771 | info->MCR &= ~UART_MCR_AFE; |
| 772 | if (cflag & CRTSCTS) { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 773 | info->port.flags |= ASYNC_CTS_FLOW; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 774 | info->IER |= UART_IER_MSI; |
| 775 | if ((info->type == PORT_16550A) || (info->board->chip_flag)) { |
| 776 | info->MCR |= UART_MCR_AFE; |
| 777 | } else { |
| 778 | status = inb(info->ioaddr + UART_MSR); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 779 | if (tty->hw_stopped) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 780 | if (status & UART_MSR_CTS) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 781 | tty->hw_stopped = 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 782 | if (info->type != PORT_16550A && |
| 783 | !info->board->chip_flag) { |
| 784 | outb(info->IER & ~UART_IER_THRI, |
| 785 | info->ioaddr + |
| 786 | UART_IER); |
| 787 | info->IER |= UART_IER_THRI; |
| 788 | outb(info->IER, info->ioaddr + |
| 789 | UART_IER); |
| 790 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 791 | tty_wakeup(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 792 | } |
| 793 | } else { |
| 794 | if (!(status & UART_MSR_CTS)) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 795 | tty->hw_stopped = 1; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 796 | if ((info->type != PORT_16550A) && |
| 797 | (!info->board->chip_flag)) { |
| 798 | info->IER &= ~UART_IER_THRI; |
| 799 | outb(info->IER, info->ioaddr + |
| 800 | UART_IER); |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | } |
| 805 | } else { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 806 | info->port.flags &= ~ASYNC_CTS_FLOW; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 807 | } |
| 808 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 809 | if (cflag & CLOCAL) { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 810 | info->port.flags &= ~ASYNC_CHECK_CD; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 811 | } else { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 812 | info->port.flags |= ASYNC_CHECK_CD; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 813 | info->IER |= UART_IER_MSI; |
| 814 | } |
| 815 | outb(info->IER, info->ioaddr + UART_IER); |
| 816 | |
| 817 | /* |
| 818 | * Set up parity check flag |
| 819 | */ |
| 820 | info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 821 | if (I_INPCK(tty)) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 822 | info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 823 | if (I_BRKINT(tty) || I_PARMRK(tty)) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 824 | info->read_status_mask |= UART_LSR_BI; |
| 825 | |
| 826 | info->ignore_status_mask = 0; |
| 827 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 828 | if (I_IGNBRK(tty)) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 829 | info->ignore_status_mask |= UART_LSR_BI; |
| 830 | info->read_status_mask |= UART_LSR_BI; |
| 831 | /* |
| 832 | * If we're ignore parity and break indicators, ignore |
| 833 | * overruns too. (For real raw support). |
| 834 | */ |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 835 | if (I_IGNPAR(tty)) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 836 | info->ignore_status_mask |= |
| 837 | UART_LSR_OE | |
| 838 | UART_LSR_PE | |
| 839 | UART_LSR_FE; |
| 840 | info->read_status_mask |= |
| 841 | UART_LSR_OE | |
| 842 | UART_LSR_PE | |
| 843 | UART_LSR_FE; |
| 844 | } |
| 845 | } |
| 846 | if (info->board->chip_flag) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 847 | mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty)); |
| 848 | mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty)); |
| 849 | if (I_IXON(tty)) { |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 850 | mxser_enable_must_rx_software_flow_control( |
| 851 | info->ioaddr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 852 | } else { |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 853 | mxser_disable_must_rx_software_flow_control( |
| 854 | info->ioaddr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 855 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 856 | if (I_IXOFF(tty)) { |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 857 | mxser_enable_must_tx_software_flow_control( |
| 858 | info->ioaddr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 859 | } else { |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 860 | mxser_disable_must_tx_software_flow_control( |
| 861 | info->ioaddr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 862 | } |
| 863 | } |
| 864 | |
| 865 | |
| 866 | outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ |
| 867 | outb(cval, info->ioaddr + UART_LCR); |
| 868 | |
| 869 | return ret; |
| 870 | } |
| 871 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 872 | static void mxser_check_modem_status(struct tty_struct *tty, |
| 873 | struct mxser_port *port, int status) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 874 | { |
| 875 | /* update input line counters */ |
| 876 | if (status & UART_MSR_TERI) |
| 877 | port->icount.rng++; |
| 878 | if (status & UART_MSR_DDSR) |
| 879 | port->icount.dsr++; |
| 880 | if (status & UART_MSR_DDCD) |
| 881 | port->icount.dcd++; |
| 882 | if (status & UART_MSR_DCTS) |
| 883 | port->icount.cts++; |
| 884 | port->mon_data.modem_status = status; |
| 885 | wake_up_interruptible(&port->delta_msr_wait); |
| 886 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 887 | if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 888 | if (status & UART_MSR_DCD) |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 889 | wake_up_interruptible(&port->port.open_wait); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 890 | } |
| 891 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 892 | tty = tty_port_tty_get(&port->port); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 893 | if (port->port.flags & ASYNC_CTS_FLOW) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 894 | if (tty->hw_stopped) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 895 | if (status & UART_MSR_CTS) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 896 | tty->hw_stopped = 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 897 | |
| 898 | if ((port->type != PORT_16550A) && |
| 899 | (!port->board->chip_flag)) { |
| 900 | outb(port->IER & ~UART_IER_THRI, |
| 901 | port->ioaddr + UART_IER); |
| 902 | port->IER |= UART_IER_THRI; |
| 903 | outb(port->IER, port->ioaddr + |
| 904 | UART_IER); |
| 905 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 906 | tty_wakeup(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 907 | } |
| 908 | } else { |
| 909 | if (!(status & UART_MSR_CTS)) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 910 | tty->hw_stopped = 1; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 911 | if (port->type != PORT_16550A && |
| 912 | !port->board->chip_flag) { |
| 913 | port->IER &= ~UART_IER_THRI; |
| 914 | outb(port->IER, port->ioaddr + |
| 915 | UART_IER); |
| 916 | } |
| 917 | } |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 922 | static int mxser_startup(struct tty_struct *tty) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 923 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 924 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 925 | unsigned long page; |
| 926 | unsigned long flags; |
| 927 | |
| 928 | page = __get_free_page(GFP_KERNEL); |
| 929 | if (!page) |
| 930 | return -ENOMEM; |
| 931 | |
| 932 | spin_lock_irqsave(&info->slock, flags); |
| 933 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 934 | if (info->port.flags & ASYNC_INITIALIZED) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 935 | free_page(page); |
| 936 | spin_unlock_irqrestore(&info->slock, flags); |
| 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | if (!info->ioaddr || !info->type) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 941 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 942 | free_page(page); |
| 943 | spin_unlock_irqrestore(&info->slock, flags); |
| 944 | return 0; |
| 945 | } |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 946 | if (info->port.xmit_buf) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 947 | free_page(page); |
| 948 | else |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 949 | info->port.xmit_buf = (unsigned char *) page; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 950 | |
| 951 | /* |
| 952 | * Clear the FIFO buffers and disable them |
| 953 | * (they will be reenabled in mxser_change_speed()) |
| 954 | */ |
| 955 | if (info->board->chip_flag) |
| 956 | outb((UART_FCR_CLEAR_RCVR | |
| 957 | UART_FCR_CLEAR_XMIT | |
| 958 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR); |
| 959 | else |
| 960 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), |
| 961 | info->ioaddr + UART_FCR); |
| 962 | |
| 963 | /* |
| 964 | * At this point there's no way the LSR could still be 0xFF; |
| 965 | * if it is, then bail out, because there's likely no UART |
| 966 | * here. |
| 967 | */ |
| 968 | if (inb(info->ioaddr + UART_LSR) == 0xff) { |
| 969 | spin_unlock_irqrestore(&info->slock, flags); |
| 970 | if (capable(CAP_SYS_ADMIN)) { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 971 | if (tty) |
| 972 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 973 | return 0; |
| 974 | } else |
| 975 | return -ENODEV; |
| 976 | } |
| 977 | |
| 978 | /* |
| 979 | * Clear the interrupt registers. |
| 980 | */ |
| 981 | (void) inb(info->ioaddr + UART_LSR); |
| 982 | (void) inb(info->ioaddr + UART_RX); |
| 983 | (void) inb(info->ioaddr + UART_IIR); |
| 984 | (void) inb(info->ioaddr + UART_MSR); |
| 985 | |
| 986 | /* |
| 987 | * Now, initialize the UART |
| 988 | */ |
| 989 | outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */ |
| 990 | info->MCR = UART_MCR_DTR | UART_MCR_RTS; |
| 991 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 992 | |
| 993 | /* |
| 994 | * Finally, enable interrupts |
| 995 | */ |
| 996 | info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; |
| 997 | |
| 998 | if (info->board->chip_flag) |
| 999 | info->IER |= MOXA_MUST_IER_EGDAI; |
| 1000 | outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */ |
| 1001 | |
| 1002 | /* |
| 1003 | * And clear the interrupt registers again for luck. |
| 1004 | */ |
| 1005 | (void) inb(info->ioaddr + UART_LSR); |
| 1006 | (void) inb(info->ioaddr + UART_RX); |
| 1007 | (void) inb(info->ioaddr + UART_IIR); |
| 1008 | (void) inb(info->ioaddr + UART_MSR); |
| 1009 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1010 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1011 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1012 | |
| 1013 | /* |
| 1014 | * and set the speed of the serial port |
| 1015 | */ |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1016 | mxser_change_speed(tty, NULL); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1017 | info->port.flags |= ASYNC_INITIALIZED; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1018 | spin_unlock_irqrestore(&info->slock, flags); |
| 1019 | |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | /* |
| 1024 | * This routine will shutdown a serial port; interrupts maybe disabled, and |
| 1025 | * DTR is dropped if the hangup on close termio flag is on. |
| 1026 | */ |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1027 | static void mxser_shutdown(struct tty_struct *tty) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1028 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1029 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1030 | unsigned long flags; |
| 1031 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1032 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1033 | return; |
| 1034 | |
| 1035 | spin_lock_irqsave(&info->slock, flags); |
| 1036 | |
| 1037 | /* |
| 1038 | * clear delta_msr_wait queue to avoid mem leaks: we may free the irq |
| 1039 | * here so the queue might never be waken up |
| 1040 | */ |
| 1041 | wake_up_interruptible(&info->delta_msr_wait); |
| 1042 | |
| 1043 | /* |
| 1044 | * Free the IRQ, if necessary |
| 1045 | */ |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1046 | if (info->port.xmit_buf) { |
| 1047 | free_page((unsigned long) info->port.xmit_buf); |
| 1048 | info->port.xmit_buf = NULL; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1049 | } |
| 1050 | |
| 1051 | info->IER = 0; |
| 1052 | outb(0x00, info->ioaddr + UART_IER); |
| 1053 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1054 | if (tty->termios->c_cflag & HUPCL) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1055 | info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); |
| 1056 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 1057 | |
| 1058 | /* clear Rx/Tx FIFO's */ |
| 1059 | if (info->board->chip_flag) |
| 1060 | outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | |
| 1061 | MOXA_MUST_FCR_GDA_MODE_ENABLE, |
| 1062 | info->ioaddr + UART_FCR); |
| 1063 | else |
| 1064 | outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT, |
| 1065 | info->ioaddr + UART_FCR); |
| 1066 | |
| 1067 | /* read data port to reset things */ |
| 1068 | (void) inb(info->ioaddr + UART_RX); |
| 1069 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1070 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1071 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1072 | info->port.flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1073 | |
| 1074 | if (info->board->chip_flag) |
| 1075 | SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); |
| 1076 | |
| 1077 | spin_unlock_irqrestore(&info->slock, flags); |
| 1078 | } |
| 1079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | /* |
| 1081 | * This routine is called whenever a serial port is opened. It |
| 1082 | * enables interrupts for a serial port, linking in its async structure into |
| 1083 | * the IRQ chain. It also performs the serial-specific |
| 1084 | * initialization for the tty structure. |
| 1085 | */ |
| 1086 | static int mxser_open(struct tty_struct *tty, struct file *filp) |
| 1087 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1088 | struct mxser_port *info; |
| 1089 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | int retval, line; |
| 1091 | |
| 1092 | line = tty->index; |
| 1093 | if (line == MXSER_PORTS) |
| 1094 | return 0; |
| 1095 | if (line < 0 || line > MXSER_PORTS) |
| 1096 | return -ENODEV; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1097 | info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD]; |
| 1098 | if (!info->ioaddr) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1099 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | |
| 1101 | tty->driver_data = info; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1102 | tty_port_tty_set(&info->port, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | /* |
| 1104 | * Start up serial port |
| 1105 | */ |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1106 | spin_lock_irqsave(&info->port.lock, flags); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1107 | info->port.count++; |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1108 | spin_unlock_irqrestore(&info->port.lock, flags); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1109 | retval = mxser_startup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | if (retval) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1111 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
| 1113 | retval = mxser_block_til_ready(tty, filp, info); |
| 1114 | if (retval) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1115 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | |
Cedric Le Goater | 8cddd70 | 2007-02-10 01:46:33 -0800 | [diff] [blame] | 1117 | /* unmark here for very high baud rate (ex. 921600 bps) used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | tty->low_latency = 1; |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 1122 | static void mxser_flush_buffer(struct tty_struct *tty) |
| 1123 | { |
| 1124 | struct mxser_port *info = tty->driver_data; |
| 1125 | char fcr; |
| 1126 | unsigned long flags; |
| 1127 | |
| 1128 | |
| 1129 | spin_lock_irqsave(&info->slock, flags); |
| 1130 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1131 | |
| 1132 | fcr = inb(info->ioaddr + UART_FCR); |
| 1133 | outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), |
| 1134 | info->ioaddr + UART_FCR); |
| 1135 | outb(fcr, info->ioaddr + UART_FCR); |
| 1136 | |
| 1137 | spin_unlock_irqrestore(&info->slock, flags); |
| 1138 | |
| 1139 | tty_wakeup(tty); |
| 1140 | } |
| 1141 | |
| 1142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | /* |
| 1144 | * This routine is called when the serial port gets closed. First, we |
| 1145 | * wait for the last remaining data to be sent. Then, we unlink its |
| 1146 | * async structure from the interrupt chain if necessary, and we free |
| 1147 | * that IRQ if nothing is left in the chain. |
| 1148 | */ |
| 1149 | static void mxser_close(struct tty_struct *tty, struct file *filp) |
| 1150 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1151 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | |
| 1153 | unsigned long timeout; |
| 1154 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
| 1156 | if (tty->index == MXSER_PORTS) |
| 1157 | return; |
| 1158 | if (!info) |
Kirill Smelkov | 6f08b72 | 2005-11-07 00:59:23 -0800 | [diff] [blame] | 1159 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1161 | spin_lock_irqsave(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | |
| 1163 | if (tty_hung_up_p(filp)) { |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1164 | spin_unlock_irqrestore(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | return; |
| 1166 | } |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1167 | if ((tty->count == 1) && (info->port.count != 1)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | /* |
| 1169 | * Uh, oh. tty->count is 1, which means that the tty |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1170 | * structure will be freed. Info->port.count should always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | * be one in these conditions. If it's greater than |
| 1172 | * one, we've got real problems, since it means the |
| 1173 | * serial port won't be shutdown. |
| 1174 | */ |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1175 | printk(KERN_ERR "mxser_close: bad serial port count; " |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1176 | "tty->count is 1, info->port.count is %d\n", info->port.count); |
| 1177 | info->port.count = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | } |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1179 | if (--info->port.count < 0) { |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1180 | printk(KERN_ERR "mxser_close: bad serial port count for " |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1181 | "ttys%d: %d\n", tty->index, info->port.count); |
| 1182 | info->port.count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | } |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1184 | if (info->port.count) { |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1185 | spin_unlock_irqrestore(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | return; |
| 1187 | } |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1188 | info->port.flags |= ASYNC_CLOSING; |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 1189 | spin_unlock_irqrestore(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | /* |
| 1191 | * Save the termios structure, since this port may have |
| 1192 | * separate termios for callout and dialin. |
| 1193 | */ |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1194 | if (info->port.flags & ASYNC_NORMAL_ACTIVE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | info->normal_termios = *tty->termios; |
| 1196 | /* |
| 1197 | * Now we wait for the transmit buffer to clear; and we notify |
| 1198 | * the line discipline to only process XON/XOFF characters. |
| 1199 | */ |
| 1200 | tty->closing = 1; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1201 | if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) |
| 1202 | tty_wait_until_sent(tty, info->port.closing_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | /* |
| 1204 | * At this point we stop accepting input. To do this, we |
| 1205 | * disable the receive line status interrupts, and tell the |
| 1206 | * interrupt driver to stop checking the data ready bit in the |
| 1207 | * line status register. |
| 1208 | */ |
| 1209 | info->IER &= ~UART_IER_RLSI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1210 | if (info->board->chip_flag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | info->IER &= ~MOXA_MUST_RECV_ISR; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1212 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1213 | if (info->port.flags & ASYNC_INITIALIZED) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1214 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | /* |
| 1216 | * Before we drop DTR, make sure the UART transmitter |
| 1217 | * has completely drained; this is especially |
| 1218 | * important if there is a transmit FIFO! |
| 1219 | */ |
| 1220 | timeout = jiffies + HZ; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1221 | while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 1222 | schedule_timeout_interruptible(5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | if (time_after(jiffies, timeout)) |
| 1224 | break; |
| 1225 | } |
| 1226 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1227 | mxser_shutdown(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 1229 | mxser_flush_buffer(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1230 | tty_ldisc_flush(tty); |
| 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | tty->closing = 0; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1233 | tty_port_tty_set(&info->port, NULL); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1234 | if (info->port.blocked_open) { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1235 | if (info->port.close_delay) |
| 1236 | schedule_timeout_interruptible(info->port.close_delay); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1237 | wake_up_interruptible(&info->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | } |
| 1239 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1240 | info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | } |
| 1242 | |
| 1243 | static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) |
| 1244 | { |
| 1245 | int c, total = 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1246 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | unsigned long flags; |
| 1248 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1249 | if (!info->port.xmit_buf) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1250 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | |
| 1252 | while (1) { |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1253 | c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, |
| 1254 | SERIAL_XMIT_SIZE - info->xmit_head)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | if (c <= 0) |
| 1256 | break; |
| 1257 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1258 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | spin_lock_irqsave(&info->slock, flags); |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1260 | info->xmit_head = (info->xmit_head + c) & |
| 1261 | (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | info->xmit_cnt += c; |
| 1263 | spin_unlock_irqrestore(&info->slock, flags); |
| 1264 | |
| 1265 | buf += c; |
| 1266 | count -= c; |
| 1267 | total += c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1270 | if (info->xmit_cnt && !tty->stopped) { |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1271 | if (!tty->hw_stopped || |
| 1272 | (info->type == PORT_16550A) || |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1273 | (info->board->chip_flag)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | spin_lock_irqsave(&info->slock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1275 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + |
| 1276 | UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | info->IER |= UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1278 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | spin_unlock_irqrestore(&info->slock, flags); |
| 1280 | } |
| 1281 | } |
| 1282 | return total; |
| 1283 | } |
| 1284 | |
Alan Cox | 0be2ead | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1285 | static int mxser_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1287 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | unsigned long flags; |
| 1289 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1290 | if (!info->port.xmit_buf) |
Alan Cox | 0be2ead | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1291 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | |
| 1293 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) |
Alan Cox | 0be2ead | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1294 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | |
| 1296 | spin_lock_irqsave(&info->slock, flags); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1297 | info->port.xmit_buf[info->xmit_head++] = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
| 1299 | info->xmit_cnt++; |
| 1300 | spin_unlock_irqrestore(&info->slock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1301 | if (!tty->stopped) { |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1302 | if (!tty->hw_stopped || |
| 1303 | (info->type == PORT_16550A) || |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1304 | info->board->chip_flag) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | spin_lock_irqsave(&info->slock, flags); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1306 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | info->IER |= UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1308 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | spin_unlock_irqrestore(&info->slock, flags); |
| 1310 | } |
| 1311 | } |
Alan Cox | 0be2ead | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1312 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | } |
| 1314 | |
| 1315 | |
| 1316 | static void mxser_flush_chars(struct tty_struct *tty) |
| 1317 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1318 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | unsigned long flags; |
| 1320 | |
Jiri Slaby | ace7dd9 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 1321 | if (info->xmit_cnt <= 0 || tty->stopped || !info->port.xmit_buf || |
| 1322 | (tty->hw_stopped && info->type != PORT_16550A && |
| 1323 | !info->board->chip_flag)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | return; |
| 1325 | |
| 1326 | spin_lock_irqsave(&info->slock, flags); |
| 1327 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1328 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | info->IER |= UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1330 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | |
| 1332 | spin_unlock_irqrestore(&info->slock, flags); |
| 1333 | } |
| 1334 | |
| 1335 | static int mxser_write_room(struct tty_struct *tty) |
| 1336 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1337 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | int ret; |
| 1339 | |
| 1340 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; |
Jiri Slaby | ace7dd9 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 1341 | return ret < 0 ? 0 : ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } |
| 1343 | |
| 1344 | static int mxser_chars_in_buffer(struct tty_struct *tty) |
| 1345 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1346 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | return info->xmit_cnt; |
| 1348 | } |
| 1349 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1350 | /* |
| 1351 | * ------------------------------------------------------------ |
| 1352 | * friends of mxser_ioctl() |
| 1353 | * ------------------------------------------------------------ |
| 1354 | */ |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1355 | static int mxser_get_serial_info(struct tty_struct *tty, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1356 | struct serial_struct __user *retinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1358 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1359 | struct serial_struct tmp = { |
| 1360 | .type = info->type, |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1361 | .line = tty->index, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1362 | .port = info->ioaddr, |
| 1363 | .irq = info->board->irq, |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1364 | .flags = info->port.flags, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1365 | .baud_base = info->baud_base, |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1366 | .close_delay = info->port.close_delay, |
| 1367 | .closing_wait = info->port.closing_wait, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1368 | .custom_divisor = info->custom_divisor, |
| 1369 | .hub6 = 0 |
| 1370 | }; |
| 1371 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
| 1372 | return -EFAULT; |
| 1373 | return 0; |
| 1374 | } |
| 1375 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1376 | static int mxser_set_serial_info(struct tty_struct *tty, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1377 | struct serial_struct __user *new_info) |
| 1378 | { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1379 | struct mxser_port *info = tty->driver_data; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1380 | struct serial_struct new_serial; |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 1381 | speed_t baud; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1382 | unsigned long sl_flags; |
| 1383 | unsigned int flags; |
| 1384 | int retval = 0; |
| 1385 | |
| 1386 | if (!new_info || !info->ioaddr) |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 1387 | return -ENODEV; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1388 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
| 1389 | return -EFAULT; |
| 1390 | |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 1391 | if (new_serial.irq != info->board->irq || |
| 1392 | new_serial.port != info->ioaddr) |
| 1393 | return -EINVAL; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1394 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1395 | flags = info->port.flags & ASYNC_SPD_MASK; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1396 | |
| 1397 | if (!capable(CAP_SYS_ADMIN)) { |
| 1398 | if ((new_serial.baud_base != info->baud_base) || |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1399 | (new_serial.close_delay != info->port.close_delay) || |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1400 | ((new_serial.flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1401 | return -EPERM; |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1402 | info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1403 | (new_serial.flags & ASYNC_USR_MASK)); |
| 1404 | } else { |
| 1405 | /* |
| 1406 | * OK, past this point, all the error checking has been done. |
| 1407 | * At this point, we start making changes..... |
| 1408 | */ |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1409 | info->port.flags = ((info->port.flags & ~ASYNC_FLAGS) | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1410 | (new_serial.flags & ASYNC_FLAGS)); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1411 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
| 1412 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1413 | tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) |
| 1414 | ? 1 : 0; |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1415 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 1416 | (new_serial.baud_base != info->baud_base || |
| 1417 | new_serial.custom_divisor != |
| 1418 | info->custom_divisor)) { |
| 1419 | baud = new_serial.baud_base / new_serial.custom_divisor; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1420 | tty_encode_baud_rate(tty, baud, baud); |
Jiri Slaby | 80ff8a8 | 2008-02-07 00:16:51 -0800 | [diff] [blame] | 1421 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | info->type = new_serial.type; |
| 1425 | |
| 1426 | process_txrx_fifo(info); |
| 1427 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 1428 | if (info->port.flags & ASYNC_INITIALIZED) { |
| 1429 | if (flags != (info->port.flags & ASYNC_SPD_MASK)) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1430 | spin_lock_irqsave(&info->slock, sl_flags); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1431 | mxser_change_speed(tty, NULL); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1432 | spin_unlock_irqrestore(&info->slock, sl_flags); |
| 1433 | } |
| 1434 | } else |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1435 | retval = mxser_startup(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1436 | |
| 1437 | return retval; |
| 1438 | } |
| 1439 | |
| 1440 | /* |
| 1441 | * mxser_get_lsr_info - get line status register info |
| 1442 | * |
| 1443 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 1444 | * is emptied. On bus types like RS485, the transmitter must |
| 1445 | * release the bus after transmitting. This must be done when |
| 1446 | * the transmit shift register is empty, not be done when the |
| 1447 | * transmit holding register is empty. This functionality |
| 1448 | * allows an RS485 driver to be written in user space. |
| 1449 | */ |
| 1450 | static int mxser_get_lsr_info(struct mxser_port *info, |
| 1451 | unsigned int __user *value) |
| 1452 | { |
| 1453 | unsigned char status; |
| 1454 | unsigned int result; |
| 1455 | unsigned long flags; |
| 1456 | |
| 1457 | spin_lock_irqsave(&info->slock, flags); |
| 1458 | status = inb(info->ioaddr + UART_LSR); |
| 1459 | spin_unlock_irqrestore(&info->slock, flags); |
| 1460 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); |
| 1461 | return put_user(result, value); |
| 1462 | } |
| 1463 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1464 | static int mxser_tiocmget(struct tty_struct *tty, struct file *file) |
| 1465 | { |
| 1466 | struct mxser_port *info = tty->driver_data; |
| 1467 | unsigned char control, status; |
| 1468 | unsigned long flags; |
| 1469 | |
| 1470 | |
| 1471 | if (tty->index == MXSER_PORTS) |
| 1472 | return -ENOIOCTLCMD; |
| 1473 | if (test_bit(TTY_IO_ERROR, &tty->flags)) |
| 1474 | return -EIO; |
| 1475 | |
| 1476 | control = info->MCR; |
| 1477 | |
| 1478 | spin_lock_irqsave(&info->slock, flags); |
| 1479 | status = inb(info->ioaddr + UART_MSR); |
| 1480 | if (status & UART_MSR_ANY_DELTA) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1481 | mxser_check_modem_status(tty, info, status); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1482 | spin_unlock_irqrestore(&info->slock, flags); |
| 1483 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | |
| 1484 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | |
| 1485 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | |
| 1486 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | |
| 1487 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | |
| 1488 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); |
| 1489 | } |
| 1490 | |
| 1491 | static int mxser_tiocmset(struct tty_struct *tty, struct file *file, |
| 1492 | unsigned int set, unsigned int clear) |
| 1493 | { |
| 1494 | struct mxser_port *info = tty->driver_data; |
| 1495 | unsigned long flags; |
| 1496 | |
| 1497 | |
| 1498 | if (tty->index == MXSER_PORTS) |
| 1499 | return -ENOIOCTLCMD; |
| 1500 | if (test_bit(TTY_IO_ERROR, &tty->flags)) |
| 1501 | return -EIO; |
| 1502 | |
| 1503 | spin_lock_irqsave(&info->slock, flags); |
| 1504 | |
| 1505 | if (set & TIOCM_RTS) |
| 1506 | info->MCR |= UART_MCR_RTS; |
| 1507 | if (set & TIOCM_DTR) |
| 1508 | info->MCR |= UART_MCR_DTR; |
| 1509 | |
| 1510 | if (clear & TIOCM_RTS) |
| 1511 | info->MCR &= ~UART_MCR_RTS; |
| 1512 | if (clear & TIOCM_DTR) |
| 1513 | info->MCR &= ~UART_MCR_DTR; |
| 1514 | |
| 1515 | outb(info->MCR, info->ioaddr + UART_MCR); |
| 1516 | spin_unlock_irqrestore(&info->slock, flags); |
| 1517 | return 0; |
| 1518 | } |
| 1519 | |
| 1520 | static int __init mxser_program_mode(int port) |
| 1521 | { |
| 1522 | int id, i, j, n; |
| 1523 | |
| 1524 | outb(0, port); |
| 1525 | outb(0, port); |
| 1526 | outb(0, port); |
| 1527 | (void)inb(port); |
| 1528 | (void)inb(port); |
| 1529 | outb(0, port); |
| 1530 | (void)inb(port); |
| 1531 | |
| 1532 | id = inb(port + 1) & 0x1F; |
| 1533 | if ((id != C168_ASIC_ID) && |
| 1534 | (id != C104_ASIC_ID) && |
| 1535 | (id != C102_ASIC_ID) && |
| 1536 | (id != CI132_ASIC_ID) && |
| 1537 | (id != CI134_ASIC_ID) && |
| 1538 | (id != CI104J_ASIC_ID)) |
| 1539 | return -1; |
| 1540 | for (i = 0, j = 0; i < 4; i++) { |
| 1541 | n = inb(port + 2); |
| 1542 | if (n == 'M') { |
| 1543 | j = 1; |
| 1544 | } else if ((j == 1) && (n == 1)) { |
| 1545 | j = 2; |
| 1546 | break; |
| 1547 | } else |
| 1548 | j = 0; |
| 1549 | } |
| 1550 | if (j != 2) |
| 1551 | id = -2; |
| 1552 | return id; |
| 1553 | } |
| 1554 | |
| 1555 | static void __init mxser_normal_mode(int port) |
| 1556 | { |
| 1557 | int i, n; |
| 1558 | |
| 1559 | outb(0xA5, port + 1); |
| 1560 | outb(0x80, port + 3); |
| 1561 | outb(12, port + 0); /* 9600 bps */ |
| 1562 | outb(0, port + 1); |
| 1563 | outb(0x03, port + 3); /* 8 data bits */ |
| 1564 | outb(0x13, port + 4); /* loop back mode */ |
| 1565 | for (i = 0; i < 16; i++) { |
| 1566 | n = inb(port + 5); |
| 1567 | if ((n & 0x61) == 0x60) |
| 1568 | break; |
| 1569 | if ((n & 1) == 1) |
| 1570 | (void)inb(port); |
| 1571 | } |
| 1572 | outb(0x00, port + 4); |
| 1573 | } |
| 1574 | |
| 1575 | #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ |
| 1576 | #define CHIP_DO 0x02 /* Serial Data Output in Eprom */ |
| 1577 | #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ |
| 1578 | #define CHIP_DI 0x08 /* Serial Data Input in Eprom */ |
| 1579 | #define EN_CCMD 0x000 /* Chip's command register */ |
| 1580 | #define EN0_RSARLO 0x008 /* Remote start address reg 0 */ |
| 1581 | #define EN0_RSARHI 0x009 /* Remote start address reg 1 */ |
| 1582 | #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ |
| 1583 | #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ |
| 1584 | #define EN0_DCFG 0x00E /* Data configuration reg WR */ |
| 1585 | #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ |
| 1586 | #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ |
| 1587 | #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ |
| 1588 | static int __init mxser_read_register(int port, unsigned short *regs) |
| 1589 | { |
| 1590 | int i, k, value, id; |
| 1591 | unsigned int j; |
| 1592 | |
| 1593 | id = mxser_program_mode(port); |
| 1594 | if (id < 0) |
| 1595 | return id; |
| 1596 | for (i = 0; i < 14; i++) { |
| 1597 | k = (i & 0x3F) | 0x180; |
| 1598 | for (j = 0x100; j > 0; j >>= 1) { |
| 1599 | outb(CHIP_CS, port); |
| 1600 | if (k & j) { |
| 1601 | outb(CHIP_CS | CHIP_DO, port); |
| 1602 | outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ |
| 1603 | } else { |
| 1604 | outb(CHIP_CS, port); |
| 1605 | outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ |
| 1606 | } |
| 1607 | } |
| 1608 | (void)inb(port); |
| 1609 | value = 0; |
| 1610 | for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { |
| 1611 | outb(CHIP_CS, port); |
| 1612 | outb(CHIP_CS | CHIP_SK, port); |
| 1613 | if (inb(port) & CHIP_DI) |
| 1614 | value |= j; |
| 1615 | } |
| 1616 | regs[i] = value; |
| 1617 | outb(0, port); |
| 1618 | } |
| 1619 | mxser_normal_mode(port); |
| 1620 | return id; |
| 1621 | } |
| 1622 | |
| 1623 | static int mxser_ioctl_special(unsigned int cmd, void __user *argp) |
| 1624 | { |
| 1625 | struct mxser_port *port; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1626 | struct tty_struct *tty; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1627 | int result, status; |
| 1628 | unsigned int i, j; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1629 | int ret = 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1630 | |
| 1631 | switch (cmd) { |
| 1632 | case MOXA_GET_MAJOR: |
Jiri Slaby | 8f3d137 | 2008-07-29 22:33:38 -0700 | [diff] [blame] | 1633 | if (printk_ratelimit()) |
| 1634 | printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl " |
| 1635 | "%x (GET_MAJOR), fix your userspace\n", |
| 1636 | current->comm, cmd); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1637 | return put_user(ttymajor, (int __user *)argp); |
| 1638 | |
| 1639 | case MOXA_CHKPORTENABLE: |
| 1640 | result = 0; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1641 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1642 | for (i = 0; i < MXSER_BOARDS; i++) |
| 1643 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) |
| 1644 | if (mxser_boards[i].ports[j].ioaddr) |
| 1645 | result |= (1 << i); |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1646 | unlock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1647 | return put_user(result, (unsigned long __user *)argp); |
| 1648 | case MOXA_GETDATACOUNT: |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1649 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1650 | if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1651 | ret = -EFAULT; |
| 1652 | unlock_kernel(); |
| 1653 | return ret; |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1654 | case MOXA_GETMSTATUS: { |
| 1655 | struct mxser_mstatus ms, __user *msu = argp; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1656 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1657 | for (i = 0; i < MXSER_BOARDS; i++) |
| 1658 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { |
| 1659 | port = &mxser_boards[i].ports[j]; |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1660 | memset(&ms, 0, sizeof(ms)); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1661 | |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1662 | if (!port->ioaddr) |
| 1663 | goto copy; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1664 | |
| 1665 | tty = tty_port_tty_get(&port->port); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1666 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1667 | if (!tty || !tty->termios) |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1668 | ms.cflag = port->normal_termios.c_cflag; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1669 | else |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1670 | ms.cflag = tty->termios->c_cflag; |
| 1671 | tty_kref_put(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1672 | status = inb(port->ioaddr + UART_MSR); |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1673 | if (status & UART_MSR_DCD) |
| 1674 | ms.dcd = 1; |
| 1675 | if (status & UART_MSR_DSR) |
| 1676 | ms.dsr = 1; |
| 1677 | if (status & UART_MSR_CTS) |
| 1678 | ms.cts = 1; |
| 1679 | copy: |
| 1680 | if (copy_to_user(msu, &ms, sizeof(ms))) { |
| 1681 | unlock_kernel(); |
| 1682 | return -EFAULT; |
| 1683 | } |
| 1684 | msu++; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1685 | } |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1686 | unlock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1687 | return 0; |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1688 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1689 | case MOXA_ASPP_MON_EXT: { |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1690 | struct mxser_mon_ext *me; /* it's 2k, stack unfriendly */ |
| 1691 | unsigned int cflag, iflag, p; |
| 1692 | u8 opmode; |
| 1693 | |
| 1694 | me = kzalloc(sizeof(*me), GFP_KERNEL); |
| 1695 | if (!me) |
| 1696 | return -ENOMEM; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1697 | |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1698 | lock_kernel(); |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1699 | for (i = 0, p = 0; i < MXSER_BOARDS; i++) { |
| 1700 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++, p++) { |
| 1701 | if (p >= ARRAY_SIZE(me->rx_cnt)) { |
| 1702 | i = MXSER_BOARDS; |
| 1703 | break; |
| 1704 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1705 | port = &mxser_boards[i].ports[j]; |
| 1706 | if (!port->ioaddr) |
| 1707 | continue; |
| 1708 | |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1709 | status = mxser_get_msr(port->ioaddr, 0, p); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1710 | |
| 1711 | if (status & UART_MSR_TERI) |
| 1712 | port->icount.rng++; |
| 1713 | if (status & UART_MSR_DDSR) |
| 1714 | port->icount.dsr++; |
| 1715 | if (status & UART_MSR_DDCD) |
| 1716 | port->icount.dcd++; |
| 1717 | if (status & UART_MSR_DCTS) |
| 1718 | port->icount.cts++; |
| 1719 | |
| 1720 | port->mon_data.modem_status = status; |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1721 | me->rx_cnt[p] = port->mon_data.rxcnt; |
| 1722 | me->tx_cnt[p] = port->mon_data.txcnt; |
| 1723 | me->up_rxcnt[p] = port->mon_data.up_rxcnt; |
| 1724 | me->up_txcnt[p] = port->mon_data.up_txcnt; |
| 1725 | me->modem_status[p] = |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1726 | port->mon_data.modem_status; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1727 | tty = tty_port_tty_get(&port->port); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1728 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1729 | if (!tty || !tty->termios) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1730 | cflag = port->normal_termios.c_cflag; |
| 1731 | iflag = port->normal_termios.c_iflag; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1732 | me->baudrate[p] = tty_termios_baud_rate(&port->normal_termios); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1733 | } else { |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1734 | cflag = tty->termios->c_cflag; |
| 1735 | iflag = tty->termios->c_iflag; |
| 1736 | me->baudrate[p] = tty_get_baud_rate(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1737 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1738 | tty_kref_put(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1739 | |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1740 | me->databits[p] = cflag & CSIZE; |
| 1741 | me->stopbits[p] = cflag & CSTOPB; |
| 1742 | me->parity[p] = cflag & (PARENB | PARODD | |
| 1743 | CMSPAR); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1744 | |
| 1745 | if (cflag & CRTSCTS) |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1746 | me->flowctrl[p] |= 0x03; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1747 | |
| 1748 | if (iflag & (IXON | IXOFF)) |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1749 | me->flowctrl[p] |= 0x0C; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1750 | |
| 1751 | if (port->type == PORT_16550A) |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1752 | me->fifo[p] = 1; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1753 | |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1754 | opmode = inb(port->opmode_ioaddr) >> |
| 1755 | ((p % 4) * 2); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1756 | opmode &= OP_MODE_MASK; |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1757 | me->iftype[p] = opmode; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1758 | } |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1759 | } |
| 1760 | unlock_kernel(); |
Jiri Slaby | 72800df | 2008-07-25 01:48:20 -0700 | [diff] [blame] | 1761 | if (copy_to_user(argp, me, sizeof(*me))) |
| 1762 | ret = -EFAULT; |
| 1763 | kfree(me); |
| 1764 | return ret; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1765 | } |
| 1766 | default: |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1767 | return -ENOIOCTLCMD; |
| 1768 | } |
| 1769 | return 0; |
| 1770 | } |
| 1771 | |
| 1772 | static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg, |
| 1773 | struct async_icount *cprev) |
| 1774 | { |
| 1775 | struct async_icount cnow; |
| 1776 | unsigned long flags; |
| 1777 | int ret; |
| 1778 | |
| 1779 | spin_lock_irqsave(&info->slock, flags); |
| 1780 | cnow = info->icount; /* atomic copy */ |
| 1781 | spin_unlock_irqrestore(&info->slock, flags); |
| 1782 | |
| 1783 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || |
| 1784 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || |
| 1785 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || |
| 1786 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); |
| 1787 | |
| 1788 | *cprev = cnow; |
| 1789 | |
| 1790 | return ret; |
| 1791 | } |
| 1792 | |
| 1793 | static int mxser_ioctl(struct tty_struct *tty, struct file *file, |
| 1794 | unsigned int cmd, unsigned long arg) |
| 1795 | { |
| 1796 | struct mxser_port *info = tty->driver_data; |
| 1797 | struct async_icount cnow; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | unsigned long flags; |
| 1799 | void __user *argp = (void __user *)arg; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1800 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | |
| 1802 | if (tty->index == MXSER_PORTS) |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1803 | return mxser_ioctl_special(cmd, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1806 | int p; |
| 1807 | unsigned long opmode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; |
| 1809 | int shiftbit; |
| 1810 | unsigned char val, mask; |
| 1811 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1812 | p = tty->index % 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | if (cmd == MOXA_SET_OP_MODE) { |
| 1814 | if (get_user(opmode, (int __user *) argp)) |
| 1815 | return -EFAULT; |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1816 | if (opmode != RS232_MODE && |
| 1817 | opmode != RS485_2WIRE_MODE && |
| 1818 | opmode != RS422_MODE && |
| 1819 | opmode != RS485_4WIRE_MODE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | return -EFAULT; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1821 | lock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | mask = ModeMask[p]; |
| 1823 | shiftbit = p * 2; |
| 1824 | val = inb(info->opmode_ioaddr); |
| 1825 | val &= mask; |
| 1826 | val |= (opmode << shiftbit); |
| 1827 | outb(val, info->opmode_ioaddr); |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1828 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | } else { |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1830 | lock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | shiftbit = p * 2; |
| 1832 | opmode = inb(info->opmode_ioaddr) >> shiftbit; |
| 1833 | opmode &= OP_MODE_MASK; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1834 | unlock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1835 | if (put_user(opmode, (int __user *)argp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | return -EFAULT; |
| 1837 | } |
| 1838 | return 0; |
| 1839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1841 | if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT && |
| 1842 | test_bit(TTY_IO_ERROR, &tty->flags)) |
| 1843 | return -EIO; |
| 1844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | case TIOCGSERIAL: |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1847 | lock_kernel(); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1848 | retval = mxser_get_serial_info(tty, argp); |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1849 | unlock_kernel(); |
| 1850 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | case TIOCSSERIAL: |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1852 | lock_kernel(); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1853 | retval = mxser_set_serial_info(tty, argp); |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1854 | unlock_kernel(); |
| 1855 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | case TIOCSERGETLSR: /* Get line status register */ |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1857 | return mxser_get_lsr_info(info, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | /* |
| 1859 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 1860 | * - mask passed in arg for lines of interest |
| 1861 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 1862 | * Caller should use TIOCGICOUNT to see which one it was |
| 1863 | */ |
Jiri Slaby | fc83815 | 2007-04-23 14:41:04 -0700 | [diff] [blame] | 1864 | case TIOCMIWAIT: |
| 1865 | spin_lock_irqsave(&info->slock, flags); |
| 1866 | cnow = info->icount; /* note the counters on entry */ |
| 1867 | spin_unlock_irqrestore(&info->slock, flags); |
| 1868 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1869 | return wait_event_interruptible(info->delta_msr_wait, |
| 1870 | mxser_cflags_changed(info, arg, &cnow)); |
| 1871 | /* |
| 1872 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 1873 | * Return: write counters to the user passed counter struct |
| 1874 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 1875 | * RI where only 0->1 is counted. |
| 1876 | */ |
Jiri Slaby | 41aee9a | 2008-07-25 01:48:19 -0700 | [diff] [blame] | 1877 | case TIOCGICOUNT: { |
| 1878 | struct serial_icounter_struct icnt = { 0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | spin_lock_irqsave(&info->slock, flags); |
| 1880 | cnow = info->icount; |
| 1881 | spin_unlock_irqrestore(&info->slock, flags); |
Jiri Slaby | 41aee9a | 2008-07-25 01:48:19 -0700 | [diff] [blame] | 1882 | |
| 1883 | icnt.frame = cnow.frame; |
| 1884 | icnt.brk = cnow.brk; |
| 1885 | icnt.overrun = cnow.overrun; |
| 1886 | icnt.buf_overrun = cnow.buf_overrun; |
| 1887 | icnt.parity = cnow.parity; |
| 1888 | icnt.rx = cnow.rx; |
| 1889 | icnt.tx = cnow.tx; |
| 1890 | icnt.cts = cnow.cts; |
| 1891 | icnt.dsr = cnow.dsr; |
| 1892 | icnt.rng = cnow.rng; |
| 1893 | icnt.dcd = cnow.dcd; |
| 1894 | |
| 1895 | return copy_to_user(argp, &icnt, sizeof(icnt)) ? -EFAULT : 0; |
| 1896 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | case MOXA_HighSpeedOn: |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 1898 | return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1899 | case MOXA_SDS_RSTICOUNTER: |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1900 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1901 | info->mon_data.rxcnt = 0; |
| 1902 | info->mon_data.txcnt = 0; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1903 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | return 0; |
| 1905 | |
| 1906 | case MOXA_ASPP_OQUEUE:{ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1907 | int len, lsr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1909 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1910 | len = mxser_chars_in_buffer(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1911 | lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1912 | len += (lsr ? 0 : 1); |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1913 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1915 | return put_user(len, (int __user *)argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1917 | case MOXA_ASPP_MON: { |
| 1918 | int mcr, status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1920 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1921 | status = mxser_get_msr(info->ioaddr, 1, tty->index); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1922 | mxser_check_modem_status(tty, info, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1924 | mcr = inb(info->ioaddr + UART_MCR); |
| 1925 | if (mcr & MOXA_MUST_MCR_XON_FLAG) |
| 1926 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; |
| 1927 | else |
| 1928 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1930 | if (mcr & MOXA_MUST_MCR_TX_XON) |
| 1931 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; |
| 1932 | else |
| 1933 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; |
| 1934 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1935 | if (tty->hw_stopped) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1936 | info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; |
| 1937 | else |
| 1938 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; |
Alan Cox | 9d6d162 | 2008-04-30 00:53:20 -0700 | [diff] [blame] | 1939 | unlock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1940 | if (copy_to_user(argp, &info->mon_data, |
| 1941 | sizeof(struct mxser_mon))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | return -EFAULT; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | return 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1945 | } |
| 1946 | case MOXA_ASPP_LSTATUS: { |
| 1947 | if (put_user(info->err_shadow, (unsigned char __user *)argp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1950 | info->err_shadow = 0; |
| 1951 | return 0; |
| 1952 | } |
| 1953 | case MOXA_SET_BAUD_METHOD: { |
| 1954 | int method; |
| 1955 | |
| 1956 | if (get_user(method, (int __user *)argp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | return -EFAULT; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1958 | mxser_set_baud_method[tty->index] = method; |
| 1959 | return put_user(method, (int __user *)argp); |
| 1960 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | default: |
| 1962 | return -ENOIOCTLCMD; |
| 1963 | } |
| 1964 | return 0; |
| 1965 | } |
| 1966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | static void mxser_stoprx(struct tty_struct *tty) |
| 1968 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1969 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | |
| 1971 | info->ldisc_stop_rx = 1; |
| 1972 | if (I_IXOFF(tty)) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1973 | if (info->board->chip_flag) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | info->IER &= ~MOXA_MUST_RECV_ISR; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1975 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | info->x_char = STOP_CHAR(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1978 | outb(0, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | info->IER |= UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1980 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | } |
| 1982 | } |
| 1983 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 1984 | if (tty->termios->c_cflag & CRTSCTS) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 1985 | info->MCR &= ~UART_MCR_RTS; |
| 1986 | outb(info->MCR, info->ioaddr + UART_MCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | } |
| 1988 | } |
| 1989 | |
| 1990 | /* |
| 1991 | * This routine is called by the upper-layer tty layer to signal that |
| 1992 | * incoming characters should be throttled. |
| 1993 | */ |
| 1994 | static void mxser_throttle(struct tty_struct *tty) |
| 1995 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | mxser_stoprx(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | } |
| 1998 | |
| 1999 | static void mxser_unthrottle(struct tty_struct *tty) |
| 2000 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2001 | struct mxser_port *info = tty->driver_data; |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 2002 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2003 | /* startrx */ |
| 2004 | info->ldisc_stop_rx = 0; |
| 2005 | if (I_IXOFF(tty)) { |
| 2006 | if (info->x_char) |
| 2007 | info->x_char = 0; |
| 2008 | else { |
| 2009 | if (info->board->chip_flag) { |
| 2010 | info->IER |= MOXA_MUST_RECV_ISR; |
| 2011 | outb(info->IER, info->ioaddr + UART_IER); |
| 2012 | } else { |
| 2013 | info->x_char = START_CHAR(tty); |
| 2014 | outb(0, info->ioaddr + UART_IER); |
| 2015 | info->IER |= UART_IER_THRI; |
| 2016 | outb(info->IER, info->ioaddr + UART_IER); |
| 2017 | } |
| 2018 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | } |
| 2020 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2021 | if (tty->termios->c_cflag & CRTSCTS) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2022 | info->MCR |= UART_MCR_RTS; |
| 2023 | outb(info->MCR, info->ioaddr + UART_MCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | } |
| 2025 | } |
| 2026 | |
| 2027 | /* |
| 2028 | * mxser_stop() and mxser_start() |
| 2029 | * |
| 2030 | * This routines are called before setting or resetting tty->stopped. |
| 2031 | * They enable or disable transmitter interrupts, as necessary. |
| 2032 | */ |
| 2033 | static void mxser_stop(struct tty_struct *tty) |
| 2034 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2035 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | unsigned long flags; |
| 2037 | |
| 2038 | spin_lock_irqsave(&info->slock, flags); |
| 2039 | if (info->IER & UART_IER_THRI) { |
| 2040 | info->IER &= ~UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2041 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | } |
| 2043 | spin_unlock_irqrestore(&info->slock, flags); |
| 2044 | } |
| 2045 | |
| 2046 | static void mxser_start(struct tty_struct *tty) |
| 2047 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2048 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | unsigned long flags; |
| 2050 | |
| 2051 | spin_lock_irqsave(&info->slock, flags); |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2052 | if (info->xmit_cnt && info->port.xmit_buf) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2053 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2054 | info->IER |= UART_IER_THRI; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2055 | outb(info->IER, info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | } |
| 2057 | spin_unlock_irqrestore(&info->slock, flags); |
| 2058 | } |
| 2059 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2060 | static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
| 2061 | { |
| 2062 | struct mxser_port *info = tty->driver_data; |
| 2063 | unsigned long flags; |
| 2064 | |
| 2065 | spin_lock_irqsave(&info->slock, flags); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2066 | mxser_change_speed(tty, old_termios); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2067 | spin_unlock_irqrestore(&info->slock, flags); |
| 2068 | |
| 2069 | if ((old_termios->c_cflag & CRTSCTS) && |
| 2070 | !(tty->termios->c_cflag & CRTSCTS)) { |
| 2071 | tty->hw_stopped = 0; |
| 2072 | mxser_start(tty); |
| 2073 | } |
| 2074 | |
| 2075 | /* Handle sw stopped */ |
| 2076 | if ((old_termios->c_iflag & IXON) && |
| 2077 | !(tty->termios->c_iflag & IXON)) { |
| 2078 | tty->stopped = 0; |
| 2079 | |
| 2080 | if (info->board->chip_flag) { |
| 2081 | spin_lock_irqsave(&info->slock, flags); |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 2082 | mxser_disable_must_rx_software_flow_control( |
| 2083 | info->ioaddr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2084 | spin_unlock_irqrestore(&info->slock, flags); |
| 2085 | } |
| 2086 | |
| 2087 | mxser_start(tty); |
| 2088 | } |
| 2089 | } |
| 2090 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | /* |
| 2092 | * mxser_wait_until_sent() --- wait until the transmitter is empty |
| 2093 | */ |
| 2094 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) |
| 2095 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2096 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | unsigned long orig_jiffies, char_time; |
| 2098 | int lsr; |
| 2099 | |
| 2100 | if (info->type == PORT_UNKNOWN) |
| 2101 | return; |
| 2102 | |
| 2103 | if (info->xmit_fifo_size == 0) |
| 2104 | return; /* Just in case.... */ |
| 2105 | |
| 2106 | orig_jiffies = jiffies; |
| 2107 | /* |
| 2108 | * Set the check interval to be 1/5 of the estimated time to |
| 2109 | * send a single character, and make it at least 1. The check |
| 2110 | * interval should also be less than the timeout. |
| 2111 | * |
| 2112 | * Note: we have to use pretty tight timings here to satisfy |
| 2113 | * the NIST-PCTS. |
| 2114 | */ |
| 2115 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; |
| 2116 | char_time = char_time / 5; |
| 2117 | if (char_time == 0) |
| 2118 | char_time = 1; |
| 2119 | if (timeout && timeout < char_time) |
| 2120 | char_time = timeout; |
| 2121 | /* |
| 2122 | * If the transmitter hasn't cleared in twice the approximate |
| 2123 | * amount of time to send the entire FIFO, it probably won't |
| 2124 | * ever clear. This assumes the UART isn't doing flow |
| 2125 | * control, which is currently the case. Hence, if it ever |
| 2126 | * takes longer than info->timeout, this is probably due to a |
| 2127 | * UART bug of some kind. So, we clamp the timeout parameter at |
| 2128 | * 2*info->timeout. |
| 2129 | */ |
| 2130 | if (!timeout || timeout > 2 * info->timeout) |
| 2131 | timeout = 2 * info->timeout; |
| 2132 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 2133 | printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", |
| 2134 | timeout, char_time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | printk("jiff=%lu...", jiffies); |
| 2136 | #endif |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2137 | lock_kernel(); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2138 | while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT |
| 2140 | printk("lsr = %d (jiff=%lu)...", lsr, jiffies); |
| 2141 | #endif |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2142 | schedule_timeout_interruptible(char_time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | if (signal_pending(current)) |
| 2144 | break; |
| 2145 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) |
| 2146 | break; |
| 2147 | } |
| 2148 | set_current_state(TASK_RUNNING); |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2149 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | |
| 2151 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT |
| 2152 | printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); |
| 2153 | #endif |
| 2154 | } |
| 2155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | /* |
| 2157 | * This routine is called by tty_hangup() when a hangup is signaled. |
| 2158 | */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2159 | static void mxser_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2161 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | |
| 2163 | mxser_flush_buffer(tty); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2164 | mxser_shutdown(tty); |
Alan Cox | 3b6826b | 2009-01-02 13:45:58 +0000 | [diff] [blame^] | 2165 | tty_port_hangup(&info->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | } |
| 2167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | /* |
| 2169 | * mxser_rs_break() --- routine which turns the break handling on or off |
| 2170 | */ |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2171 | static int mxser_rs_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2173 | struct mxser_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | unsigned long flags; |
| 2175 | |
| 2176 | spin_lock_irqsave(&info->slock, flags); |
| 2177 | if (break_state == -1) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2178 | outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, |
| 2179 | info->ioaddr + UART_LCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | else |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2181 | outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, |
| 2182 | info->ioaddr + UART_LCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | spin_unlock_irqrestore(&info->slock, flags); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2184 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | } |
| 2186 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2187 | static void mxser_receive_chars(struct tty_struct *tty, |
| 2188 | struct mxser_port *port, int *status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | unsigned char ch, gdl; |
| 2191 | int ignored = 0; |
| 2192 | int cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | int recv_room; |
| 2194 | int max = 256; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2196 | recv_room = tty->receive_room; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2197 | if (recv_room == 0 && !port->ldisc_stop_rx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | mxser_stoprx(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2199 | if (port->board->chip_flag != MOXA_OTHER_UART) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2201 | if (*status & UART_LSR_SPECIAL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | goto intr_old; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2203 | if (port->board->chip_flag == MOXA_MUST_MU860_HWID && |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 2204 | (*status & MOXA_MUST_LSR_RERR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | goto intr_old; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | if (*status & MOXA_MUST_LSR_RERR) |
| 2207 | goto intr_old; |
| 2208 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2209 | gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2211 | if (port->board->chip_flag == MOXA_MUST_MU150_HWID) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | gdl &= MOXA_MUST_GDL_MASK; |
| 2213 | if (gdl >= recv_room) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2214 | if (!port->ldisc_stop_rx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | mxser_stoprx(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2216 | } |
| 2217 | while (gdl--) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2218 | ch = inb(port->ioaddr + UART_RX); |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2219 | tty_insert_flip_char(tty, ch, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | cnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | } |
| 2222 | goto end_intr; |
| 2223 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2224 | intr_old: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | |
| 2226 | do { |
| 2227 | if (max-- < 0) |
| 2228 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2230 | ch = inb(port->ioaddr + UART_RX); |
| 2231 | if (port->board->chip_flag && (*status & UART_LSR_OE)) |
| 2232 | outb(0x23, port->ioaddr + UART_FCR); |
| 2233 | *status &= port->read_status_mask; |
| 2234 | if (*status & port->ignore_status_mask) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | if (++ignored > 100) |
| 2236 | break; |
| 2237 | } else { |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2238 | char flag = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | if (*status & UART_LSR_SPECIAL) { |
| 2240 | if (*status & UART_LSR_BI) { |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2241 | flag = TTY_BREAK; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2242 | port->icount.brk++; |
| 2243 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2244 | if (port->port.flags & ASYNC_SAK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | do_SAK(tty); |
| 2246 | } else if (*status & UART_LSR_PE) { |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2247 | flag = TTY_PARITY; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2248 | port->icount.parity++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | } else if (*status & UART_LSR_FE) { |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2250 | flag = TTY_FRAME; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2251 | port->icount.frame++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | } else if (*status & UART_LSR_OE) { |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2253 | flag = TTY_OVERRUN; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2254 | port->icount.overrun++; |
| 2255 | } else |
| 2256 | flag = TTY_BREAK; |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2257 | } |
| 2258 | tty_insert_flip_char(tty, ch, flag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | cnt++; |
| 2260 | if (cnt >= recv_room) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2261 | if (!port->ldisc_stop_rx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | mxser_stoprx(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | break; |
| 2264 | } |
| 2265 | |
| 2266 | } |
| 2267 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2268 | if (port->board->chip_flag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2271 | *status = inb(port->ioaddr + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | } while (*status & UART_LSR_DR); |
| 2273 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2274 | end_intr: |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2275 | mxvar_log.rxcnt[tty->index] += cnt; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2276 | port->mon_data.rxcnt += cnt; |
| 2277 | port->mon_data.up_rxcnt += cnt; |
Denis Vlasenko | 3399ba5 | 2005-06-06 13:35:55 -0700 | [diff] [blame] | 2278 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2279 | /* |
| 2280 | * We are called from an interrupt context with &port->slock |
| 2281 | * being held. Drop it temporarily in order to prevent |
| 2282 | * recursive locking. |
| 2283 | */ |
| 2284 | spin_unlock(&port->slock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | tty_flip_buffer_push(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2286 | spin_lock(&port->slock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | } |
| 2288 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2289 | static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2290 | { |
| 2291 | int count, cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2293 | if (port->x_char) { |
| 2294 | outb(port->x_char, port->ioaddr + UART_TX); |
| 2295 | port->x_char = 0; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2296 | mxvar_log.txcnt[tty->index]++; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2297 | port->mon_data.txcnt++; |
| 2298 | port->mon_data.up_txcnt++; |
| 2299 | port->icount.tx++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | return; |
| 2301 | } |
| 2302 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2303 | if (port->port.xmit_buf == NULL) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2304 | return; |
| 2305 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2306 | if (port->xmit_cnt <= 0 || tty->stopped || |
| 2307 | (tty->hw_stopped && |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2308 | (port->type != PORT_16550A) && |
| 2309 | (!port->board->chip_flag))) { |
| 2310 | port->IER &= ~UART_IER_THRI; |
| 2311 | outb(port->IER, port->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | return; |
| 2313 | } |
| 2314 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2315 | cnt = port->xmit_cnt; |
| 2316 | count = port->xmit_fifo_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | do { |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2318 | outb(port->port.xmit_buf[port->xmit_tail++], |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2319 | port->ioaddr + UART_TX); |
| 2320 | port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1); |
| 2321 | if (--port->xmit_cnt <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | break; |
| 2323 | } while (--count > 0); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2324 | mxvar_log.txcnt[tty->index] += (cnt - port->xmit_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2326 | port->mon_data.txcnt += (cnt - port->xmit_cnt); |
| 2327 | port->mon_data.up_txcnt += (cnt - port->xmit_cnt); |
| 2328 | port->icount.tx += (cnt - port->xmit_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2330 | if (port->xmit_cnt < WAKEUP_CHARS && tty) |
| 2331 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2333 | if (port->xmit_cnt <= 0) { |
| 2334 | port->IER &= ~UART_IER_THRI; |
| 2335 | outb(port->IER, port->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2337 | } |
| 2338 | |
| 2339 | /* |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2340 | * This is the serial driver's generic interrupt routine |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2342 | static irqreturn_t mxser_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2344 | int status, iir, i; |
| 2345 | struct mxser_board *brd = NULL; |
| 2346 | struct mxser_port *port; |
| 2347 | int max, irqbits, bits, msr; |
| 2348 | unsigned int int_cnt, pass_counter = 0; |
| 2349 | int handled = IRQ_NONE; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2350 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2352 | for (i = 0; i < MXSER_BOARDS; i++) |
| 2353 | if (dev_id == &mxser_boards[i]) { |
| 2354 | brd = dev_id; |
| 2355 | break; |
| 2356 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2358 | if (i == MXSER_BOARDS) |
| 2359 | goto irq_stop; |
| 2360 | if (brd == NULL) |
| 2361 | goto irq_stop; |
| 2362 | max = brd->info->nports; |
| 2363 | while (pass_counter++ < MXSER_ISR_PASS_LIMIT) { |
| 2364 | irqbits = inb(brd->vector) & brd->vector_mask; |
| 2365 | if (irqbits == brd->vector_mask) |
| 2366 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2367 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2368 | handled = IRQ_HANDLED; |
| 2369 | for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { |
| 2370 | if (irqbits == brd->vector_mask) |
| 2371 | break; |
| 2372 | if (bits & irqbits) |
| 2373 | continue; |
| 2374 | port = &brd->ports[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2376 | int_cnt = 0; |
| 2377 | spin_lock(&port->slock); |
| 2378 | do { |
| 2379 | iir = inb(port->ioaddr + UART_IIR); |
| 2380 | if (iir & UART_IIR_NO_INT) |
| 2381 | break; |
| 2382 | iir &= MOXA_MUST_IIR_MASK; |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2383 | tty = tty_port_tty_get(&port->port); |
| 2384 | if (!tty || |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2385 | (port->port.flags & ASYNC_CLOSING) || |
| 2386 | !(port->port.flags & |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2387 | ASYNC_INITIALIZED)) { |
| 2388 | status = inb(port->ioaddr + UART_LSR); |
| 2389 | outb(0x27, port->ioaddr + UART_FCR); |
| 2390 | inb(port->ioaddr + UART_MSR); |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2391 | tty_kref_put(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2392 | break; |
| 2393 | } |
| 2394 | |
| 2395 | status = inb(port->ioaddr + UART_LSR); |
| 2396 | |
| 2397 | if (status & UART_LSR_PE) |
| 2398 | port->err_shadow |= NPPI_NOTIFY_PARITY; |
| 2399 | if (status & UART_LSR_FE) |
| 2400 | port->err_shadow |= NPPI_NOTIFY_FRAMING; |
| 2401 | if (status & UART_LSR_OE) |
| 2402 | port->err_shadow |= |
| 2403 | NPPI_NOTIFY_HW_OVERRUN; |
| 2404 | if (status & UART_LSR_BI) |
| 2405 | port->err_shadow |= NPPI_NOTIFY_BREAK; |
| 2406 | |
| 2407 | if (port->board->chip_flag) { |
| 2408 | if (iir == MOXA_MUST_IIR_GDA || |
| 2409 | iir == MOXA_MUST_IIR_RDA || |
| 2410 | iir == MOXA_MUST_IIR_RTO || |
| 2411 | iir == MOXA_MUST_IIR_LSR) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2412 | mxser_receive_chars(tty, port, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2413 | &status); |
| 2414 | |
| 2415 | } else { |
| 2416 | status &= port->read_status_mask; |
| 2417 | if (status & UART_LSR_DR) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2418 | mxser_receive_chars(tty, port, |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2419 | &status); |
| 2420 | } |
| 2421 | msr = inb(port->ioaddr + UART_MSR); |
| 2422 | if (msr & UART_MSR_ANY_DELTA) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2423 | mxser_check_modem_status(tty, port, msr); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2424 | |
| 2425 | if (port->board->chip_flag) { |
| 2426 | if (iir == 0x02 && (status & |
| 2427 | UART_LSR_THRE)) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2428 | mxser_transmit_chars(tty, port); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2429 | } else { |
| 2430 | if (status & UART_LSR_THRE) |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2431 | mxser_transmit_chars(tty, port); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2432 | } |
Alan Cox | 216ba02 | 2008-10-13 10:40:19 +0100 | [diff] [blame] | 2433 | tty_kref_put(tty); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2434 | } while (int_cnt++ < MXSER_ISR_PASS_LIMIT); |
| 2435 | spin_unlock(&port->slock); |
| 2436 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | } |
| 2438 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2439 | irq_stop: |
| 2440 | return handled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | } |
| 2442 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2443 | static const struct tty_operations mxser_ops = { |
| 2444 | .open = mxser_open, |
| 2445 | .close = mxser_close, |
| 2446 | .write = mxser_write, |
| 2447 | .put_char = mxser_put_char, |
| 2448 | .flush_chars = mxser_flush_chars, |
| 2449 | .write_room = mxser_write_room, |
| 2450 | .chars_in_buffer = mxser_chars_in_buffer, |
| 2451 | .flush_buffer = mxser_flush_buffer, |
| 2452 | .ioctl = mxser_ioctl, |
| 2453 | .throttle = mxser_throttle, |
| 2454 | .unthrottle = mxser_unthrottle, |
| 2455 | .set_termios = mxser_set_termios, |
| 2456 | .stop = mxser_stop, |
| 2457 | .start = mxser_start, |
| 2458 | .hangup = mxser_hangup, |
| 2459 | .break_ctl = mxser_rs_break, |
| 2460 | .wait_until_sent = mxser_wait_until_sent, |
| 2461 | .tiocmget = mxser_tiocmget, |
| 2462 | .tiocmset = mxser_tiocmset, |
| 2463 | }; |
| 2464 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 2465 | struct tty_port_operations mxser_port_ops = { |
| 2466 | .carrier_raised = mxser_carrier_raised, |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 2467 | .raise_dtr_rts = mxser_raise_dtr_rts, |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 2468 | }; |
| 2469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2470 | /* |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2471 | * The MOXA Smartio/Industio serial driver boot-time initialization code! |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | */ |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2473 | |
| 2474 | static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev, |
| 2475 | unsigned int irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2476 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2477 | if (irq) |
| 2478 | free_irq(brd->irq, brd); |
| 2479 | if (pdev != NULL) { /* PCI */ |
| 2480 | #ifdef CONFIG_PCI |
| 2481 | pci_release_region(pdev, 2); |
| 2482 | pci_release_region(pdev, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2483 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2484 | } else { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2485 | release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); |
| 2486 | release_region(brd->vector, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2487 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | } |
| 2489 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2490 | static int __devinit mxser_initbrd(struct mxser_board *brd, |
| 2491 | struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2493 | struct mxser_port *info; |
| 2494 | unsigned int i; |
| 2495 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2497 | printk(KERN_INFO "mxser: max. baud rate = %d bps\n", |
| 2498 | brd->ports[0].max_baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2500 | for (i = 0; i < brd->info->nports; i++) { |
| 2501 | info = &brd->ports[i]; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2502 | tty_port_init(&info->port); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 2503 | info->port.ops = &mxser_port_ops; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2504 | info->board = brd; |
| 2505 | info->stop_rx = 0; |
| 2506 | info->ldisc_stop_rx = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2507 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2508 | /* Enhance mode enabled here */ |
| 2509 | if (brd->chip_flag != MOXA_OTHER_UART) |
Christoph Hellwig | 148ff86 | 2008-04-30 00:54:29 -0700 | [diff] [blame] | 2510 | mxser_enable_must_enchance_mode(info->ioaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | |
Alan Cox | 0ad9e7d | 2008-07-16 21:56:10 +0100 | [diff] [blame] | 2512 | info->port.flags = ASYNC_SHARE_IRQ; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2513 | info->type = brd->uart_type; |
| 2514 | |
| 2515 | process_txrx_fifo(info); |
| 2516 | |
| 2517 | info->custom_divisor = info->baud_base * 16; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2518 | info->port.close_delay = 5 * HZ / 10; |
| 2519 | info->port.closing_wait = 30 * HZ; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2520 | info->normal_termios = mxvar_sdriver->init_termios; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2521 | init_waitqueue_head(&info->delta_msr_wait); |
| 2522 | memset(&info->mon_data, 0, sizeof(struct mxser_mon)); |
| 2523 | info->err_shadow = 0; |
| 2524 | spin_lock_init(&info->slock); |
| 2525 | |
| 2526 | /* before set INT ISR, disable all int */ |
| 2527 | outb(inb(info->ioaddr + UART_IER) & 0xf0, |
| 2528 | info->ioaddr + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2529 | } |
| 2530 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2531 | retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser", |
| 2532 | brd); |
| 2533 | if (retval) { |
| 2534 | printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " |
| 2535 | "conflict with another device.\n", |
| 2536 | brd->info->name, brd->irq); |
| 2537 | /* We hold resources, we need to release them. */ |
| 2538 | mxser_release_res(brd, pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | } |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 2540 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2541 | } |
| 2542 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2543 | static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2544 | { |
| 2545 | int id, i, bits; |
| 2546 | unsigned short regs[16], irq; |
| 2547 | unsigned char scratch, scratch2; |
| 2548 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2549 | brd->chip_flag = MOXA_OTHER_UART; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | |
| 2551 | id = mxser_read_register(cap, regs); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2552 | switch (id) { |
| 2553 | case C168_ASIC_ID: |
| 2554 | brd->info = &mxser_cards[0]; |
| 2555 | break; |
| 2556 | case C104_ASIC_ID: |
| 2557 | brd->info = &mxser_cards[1]; |
| 2558 | break; |
| 2559 | case CI104J_ASIC_ID: |
| 2560 | brd->info = &mxser_cards[2]; |
| 2561 | break; |
| 2562 | case C102_ASIC_ID: |
| 2563 | brd->info = &mxser_cards[5]; |
| 2564 | break; |
| 2565 | case CI132_ASIC_ID: |
| 2566 | brd->info = &mxser_cards[6]; |
| 2567 | break; |
| 2568 | case CI134_ASIC_ID: |
| 2569 | brd->info = &mxser_cards[7]; |
| 2570 | break; |
| 2571 | default: |
Jesper Juhl | 8ea2c2e | 2006-06-25 05:47:54 -0700 | [diff] [blame] | 2572 | return 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2573 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | |
| 2575 | irq = 0; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2576 | /* some ISA cards have 2 ports, but we want to see them as 4-port (why?) |
| 2577 | Flag-hack checks if configuration should be read as 2-port here. */ |
| 2578 | if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | irq = regs[9] & 0xF000; |
| 2580 | irq = irq | (irq >> 4); |
| 2581 | if (irq != (regs[9] & 0xFF00)) |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2582 | goto err_irqconflict; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2583 | } else if (brd->info->nports == 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | irq = regs[9] & 0xF000; |
| 2585 | irq = irq | (irq >> 4); |
| 2586 | irq = irq | (irq >> 8); |
| 2587 | if (irq != regs[9]) |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2588 | goto err_irqconflict; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2589 | } else if (brd->info->nports == 8) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | irq = regs[9] & 0xF000; |
| 2591 | irq = irq | (irq >> 4); |
| 2592 | irq = irq | (irq >> 8); |
| 2593 | if ((irq != regs[9]) || (irq != regs[10])) |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2594 | goto err_irqconflict; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2595 | } |
| 2596 | |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2597 | if (!irq) { |
| 2598 | printk(KERN_ERR "mxser: interrupt number unset\n"); |
| 2599 | return -EIO; |
| 2600 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2601 | brd->irq = ((int)(irq & 0xF000) >> 12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | for (i = 0; i < 8; i++) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2603 | brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8; |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2604 | if ((regs[12] & 0x80) == 0) { |
| 2605 | printk(KERN_ERR "mxser: invalid interrupt vector\n"); |
| 2606 | return -EIO; |
| 2607 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2608 | brd->vector = (int)regs[11]; /* interrupt vector */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | if (id == 1) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2610 | brd->vector_mask = 0x00FF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2611 | else |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2612 | brd->vector_mask = 0x000F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { |
| 2614 | if (regs[12] & bits) { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2615 | brd->ports[i].baud_base = 921600; |
| 2616 | brd->ports[i].max_baud = 921600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | } else { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2618 | brd->ports[i].baud_base = 115200; |
| 2619 | brd->ports[i].max_baud = 115200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | } |
| 2621 | } |
| 2622 | scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); |
| 2623 | outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); |
| 2624 | outb(0, cap + UART_EFR); /* EFR is the same as FCR */ |
| 2625 | outb(scratch2, cap + UART_LCR); |
| 2626 | outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); |
| 2627 | scratch = inb(cap + UART_IIR); |
| 2628 | |
| 2629 | if (scratch & 0xC0) |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2630 | brd->uart_type = PORT_16550A; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2631 | else |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2632 | brd->uart_type = PORT_16450; |
| 2633 | if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports, |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2634 | "mxser(IO)")) { |
| 2635 | printk(KERN_ERR "mxser: can't request ports I/O region: " |
| 2636 | "0x%.8lx-0x%.8lx\n", |
| 2637 | brd->ports[0].ioaddr, brd->ports[0].ioaddr + |
| 2638 | 8 * brd->info->nports - 1); |
| 2639 | return -EIO; |
| 2640 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2641 | if (!request_region(brd->vector, 1, "mxser(vector)")) { |
| 2642 | release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2643 | printk(KERN_ERR "mxser: can't request interrupt vector region: " |
| 2644 | "0x%.8lx-0x%.8lx\n", |
| 2645 | brd->ports[0].ioaddr, brd->ports[0].ioaddr + |
| 2646 | 8 * brd->info->nports - 1); |
| 2647 | return -EIO; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2648 | } |
| 2649 | return brd->info->nports; |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2650 | |
| 2651 | err_irqconflict: |
| 2652 | printk(KERN_ERR "mxser: invalid interrupt number\n"); |
| 2653 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2654 | } |
| 2655 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2656 | static int __devinit mxser_probe(struct pci_dev *pdev, |
| 2657 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2659 | #ifdef CONFIG_PCI |
| 2660 | struct mxser_board *brd; |
| 2661 | unsigned int i, j; |
| 2662 | unsigned long ioaddress; |
| 2663 | int retval = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2665 | for (i = 0; i < MXSER_BOARDS; i++) |
| 2666 | if (mxser_boards[i].info == NULL) |
| 2667 | break; |
| 2668 | |
| 2669 | if (i >= MXSER_BOARDS) { |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2670 | dev_err(&pdev->dev, "too many boards found (maximum %d), board " |
| 2671 | "not configured\n", MXSER_BOARDS); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2672 | goto err; |
| 2673 | } |
| 2674 | |
| 2675 | brd = &mxser_boards[i]; |
| 2676 | brd->idx = i * MXSER_PORTS_PER_BOARD; |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2677 | dev_info(&pdev->dev, "found MOXA %s board (BusNo=%d, DevNo=%d)\n", |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2678 | mxser_cards[ent->driver_data].name, |
| 2679 | pdev->bus->number, PCI_SLOT(pdev->devfn)); |
| 2680 | |
| 2681 | retval = pci_enable_device(pdev); |
| 2682 | if (retval) { |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2683 | dev_err(&pdev->dev, "PCI enable failed\n"); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2684 | goto err; |
| 2685 | } |
| 2686 | |
| 2687 | /* io address */ |
| 2688 | ioaddress = pci_resource_start(pdev, 2); |
| 2689 | retval = pci_request_region(pdev, 2, "mxser(IO)"); |
| 2690 | if (retval) |
| 2691 | goto err; |
| 2692 | |
| 2693 | brd->info = &mxser_cards[ent->driver_data]; |
| 2694 | for (i = 0; i < brd->info->nports; i++) |
| 2695 | brd->ports[i].ioaddr = ioaddress + 8 * i; |
| 2696 | |
| 2697 | /* vector */ |
| 2698 | ioaddress = pci_resource_start(pdev, 3); |
| 2699 | retval = pci_request_region(pdev, 3, "mxser(vector)"); |
| 2700 | if (retval) |
| 2701 | goto err_relio; |
| 2702 | brd->vector = ioaddress; |
| 2703 | |
| 2704 | /* irq */ |
| 2705 | brd->irq = pdev->irq; |
| 2706 | |
| 2707 | brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); |
| 2708 | brd->uart_type = PORT_16550A; |
| 2709 | brd->vector_mask = 0; |
| 2710 | |
| 2711 | for (i = 0; i < brd->info->nports; i++) { |
| 2712 | for (j = 0; j < UART_INFO_NUM; j++) { |
| 2713 | if (Gpci_uart_info[j].type == brd->chip_flag) { |
| 2714 | brd->ports[i].max_baud = |
| 2715 | Gpci_uart_info[j].max_baud; |
| 2716 | |
| 2717 | /* exception....CP-102 */ |
| 2718 | if (brd->info->flags & MXSER_HIGHBAUD) |
| 2719 | brd->ports[i].max_baud = 921600; |
| 2720 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | } |
| 2722 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2723 | } |
| 2724 | |
| 2725 | if (brd->chip_flag == MOXA_MUST_MU860_HWID) { |
| 2726 | for (i = 0; i < brd->info->nports; i++) { |
| 2727 | if (i < 4) |
| 2728 | brd->ports[i].opmode_ioaddr = ioaddress + 4; |
| 2729 | else |
| 2730 | brd->ports[i].opmode_ioaddr = ioaddress + 0x0c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2731 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2732 | outb(0, ioaddress + 4); /* default set to RS232 mode */ |
| 2733 | outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2735 | |
| 2736 | for (i = 0; i < brd->info->nports; i++) { |
| 2737 | brd->vector_mask |= (1 << i); |
| 2738 | brd->ports[i].baud_base = 921600; |
| 2739 | } |
| 2740 | |
| 2741 | /* mxser_initbrd will hook ISR. */ |
| 2742 | retval = mxser_initbrd(brd, pdev); |
| 2743 | if (retval) |
| 2744 | goto err_null; |
| 2745 | |
| 2746 | for (i = 0; i < brd->info->nports; i++) |
| 2747 | tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev); |
| 2748 | |
| 2749 | pci_set_drvdata(pdev, brd); |
| 2750 | |
| 2751 | return 0; |
| 2752 | err_relio: |
| 2753 | pci_release_region(pdev, 2); |
| 2754 | err_null: |
| 2755 | brd->info = NULL; |
| 2756 | err: |
| 2757 | return retval; |
| 2758 | #else |
| 2759 | return -ENODEV; |
| 2760 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | } |
| 2762 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2763 | static void __devexit mxser_remove(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | { |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2765 | struct mxser_board *brd = pci_get_drvdata(pdev); |
| 2766 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2768 | for (i = 0; i < brd->info->nports; i++) |
| 2769 | tty_unregister_device(mxvar_sdriver, brd->idx + i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2770 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2771 | mxser_release_res(brd, pdev, 1); |
| 2772 | brd->info = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | } |
| 2774 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2775 | static struct pci_driver mxser_driver = { |
| 2776 | .name = "mxser", |
| 2777 | .id_table = mxser_pcibrds, |
| 2778 | .probe = mxser_probe, |
| 2779 | .remove = __devexit_p(mxser_remove) |
| 2780 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2781 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2782 | static int __init mxser_module_init(void) |
| 2783 | { |
| 2784 | struct mxser_board *brd; |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 2785 | unsigned int b, i, m; |
| 2786 | int retval; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2787 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2788 | mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); |
| 2789 | if (!mxvar_sdriver) |
| 2790 | return -ENOMEM; |
| 2791 | |
| 2792 | printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", |
| 2793 | MXSER_VERSION); |
| 2794 | |
| 2795 | /* Initialize the tty_driver structure */ |
| 2796 | mxvar_sdriver->owner = THIS_MODULE; |
| 2797 | mxvar_sdriver->magic = TTY_DRIVER_MAGIC; |
| 2798 | mxvar_sdriver->name = "ttyMI"; |
| 2799 | mxvar_sdriver->major = ttymajor; |
| 2800 | mxvar_sdriver->minor_start = 0; |
| 2801 | mxvar_sdriver->num = MXSER_PORTS + 1; |
| 2802 | mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; |
| 2803 | mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; |
| 2804 | mxvar_sdriver->init_termios = tty_std_termios; |
| 2805 | mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; |
| 2806 | mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV; |
| 2807 | tty_set_operations(mxvar_sdriver, &mxser_ops); |
| 2808 | |
| 2809 | retval = tty_register_driver(mxvar_sdriver); |
| 2810 | if (retval) { |
| 2811 | printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family " |
| 2812 | "tty driver !\n"); |
| 2813 | goto err_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | } |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2815 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2816 | /* Start finding ISA boards here */ |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 2817 | for (m = 0, b = 0; b < MXSER_BOARDS; b++) { |
| 2818 | if (!ioaddr[b]) |
| 2819 | continue; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2820 | |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 2821 | brd = &mxser_boards[m]; |
| 2822 | retval = mxser_get_ISA_conf(!ioaddr[b], brd); |
| 2823 | if (retval <= 0) { |
| 2824 | brd->info = NULL; |
| 2825 | continue; |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2826 | } |
| 2827 | |
Jiri Slaby | 1df0092 | 2008-07-25 01:48:22 -0700 | [diff] [blame] | 2828 | printk(KERN_INFO "mxser: found MOXA %s board (CAP=0x%lx)\n", |
| 2829 | brd->info->name, ioaddr[b]); |
| 2830 | |
| 2831 | /* mxser_initbrd will hook ISR. */ |
| 2832 | if (mxser_initbrd(brd, NULL) < 0) { |
| 2833 | brd->info = NULL; |
| 2834 | continue; |
| 2835 | } |
| 2836 | |
| 2837 | brd->idx = m * MXSER_PORTS_PER_BOARD; |
| 2838 | for (i = 0; i < brd->info->nports; i++) |
| 2839 | tty_register_device(mxvar_sdriver, brd->idx + i, NULL); |
| 2840 | |
| 2841 | m++; |
| 2842 | } |
| 2843 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2844 | retval = pci_register_driver(&mxser_driver); |
| 2845 | if (retval) { |
Jiri Slaby | 83766bc | 2008-07-25 01:48:21 -0700 | [diff] [blame] | 2846 | printk(KERN_ERR "mxser: can't register pci driver\n"); |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2847 | if (!m) { |
| 2848 | retval = -ENODEV; |
| 2849 | goto err_unr; |
| 2850 | } /* else: we have some ISA cards under control */ |
| 2851 | } |
| 2852 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2853 | return 0; |
| 2854 | err_unr: |
| 2855 | tty_unregister_driver(mxvar_sdriver); |
| 2856 | err_put: |
| 2857 | put_tty_driver(mxvar_sdriver); |
| 2858 | return retval; |
| 2859 | } |
| 2860 | |
| 2861 | static void __exit mxser_module_exit(void) |
| 2862 | { |
| 2863 | unsigned int i, j; |
| 2864 | |
Jiri Slaby | 1c45607 | 2008-02-07 00:16:46 -0800 | [diff] [blame] | 2865 | pci_unregister_driver(&mxser_driver); |
| 2866 | |
| 2867 | for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */ |
| 2868 | if (mxser_boards[i].info != NULL) |
| 2869 | for (j = 0; j < mxser_boards[i].info->nports; j++) |
| 2870 | tty_unregister_device(mxvar_sdriver, |
| 2871 | mxser_boards[i].idx + j); |
| 2872 | tty_unregister_driver(mxvar_sdriver); |
| 2873 | put_tty_driver(mxvar_sdriver); |
| 2874 | |
| 2875 | for (i = 0; i < MXSER_BOARDS; i++) |
| 2876 | if (mxser_boards[i].info != NULL) |
| 2877 | mxser_release_res(&mxser_boards[i], NULL, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | } |
| 2879 | |
| 2880 | module_init(mxser_module_init); |
| 2881 | module_exit(mxser_module_exit); |