Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * RocketPort device driver for Linux |
| 3 | * |
| 4 | * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. |
| 5 | * |
| 6 | * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of the |
| 11 | * License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | |
| 23 | /* |
| 24 | * Kernel Synchronization: |
| 25 | * |
| 26 | * This driver has 2 kernel control paths - exception handlers (calls into the driver |
| 27 | * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts |
| 28 | * are not used. |
| 29 | * |
| 30 | * Critical data: |
| 31 | * - rp_table[], accessed through passed "info" pointers, is a global (static) array of |
| 32 | * serial port state information and the xmit_buf circular buffer. Protected by |
| 33 | * a per port spinlock. |
| 34 | * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there |
| 35 | * is data to be transmitted. Protected by atomic bit operations. |
| 36 | * - rp_num_ports, int indicating number of open ports, protected by atomic operations. |
| 37 | * |
| 38 | * rp_write() and rp_write_char() functions use a per port semaphore to protect against |
| 39 | * simultaneous access to the same port by more than one process. |
| 40 | */ |
| 41 | |
| 42 | /****** Defines ******/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #define ROCKET_PARANOIA_CHECK |
| 44 | #define ROCKET_DISABLE_SIMUSAGE |
| 45 | |
| 46 | #undef ROCKET_SOFT_FLOW |
| 47 | #undef ROCKET_DEBUG_OPEN |
| 48 | #undef ROCKET_DEBUG_INTR |
| 49 | #undef ROCKET_DEBUG_WRITE |
| 50 | #undef ROCKET_DEBUG_FLOW |
| 51 | #undef ROCKET_DEBUG_THROTTLE |
| 52 | #undef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| 53 | #undef ROCKET_DEBUG_RECEIVE |
| 54 | #undef ROCKET_DEBUG_HANGUP |
| 55 | #undef REV_PCI_ORDER |
| 56 | #undef ROCKET_DEBUG_IO |
| 57 | |
| 58 | #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ |
| 59 | |
| 60 | /****** Kernel includes ******/ |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #include <linux/module.h> |
| 63 | #include <linux/errno.h> |
| 64 | #include <linux/major.h> |
| 65 | #include <linux/kernel.h> |
| 66 | #include <linux/signal.h> |
| 67 | #include <linux/slab.h> |
| 68 | #include <linux/mm.h> |
| 69 | #include <linux/sched.h> |
| 70 | #include <linux/timer.h> |
| 71 | #include <linux/interrupt.h> |
| 72 | #include <linux/tty.h> |
| 73 | #include <linux/tty_driver.h> |
| 74 | #include <linux/tty_flip.h> |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 75 | #include <linux/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #include <linux/string.h> |
| 77 | #include <linux/fcntl.h> |
| 78 | #include <linux/ptrace.h> |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 79 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | #include <linux/ioport.h> |
| 81 | #include <linux/delay.h> |
Jiri Slaby | 8cf5a8c | 2007-10-18 03:06:25 -0700 | [diff] [blame] | 82 | #include <linux/completion.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #include <linux/wait.h> |
| 84 | #include <linux/pci.h> |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 85 | #include <linux/uaccess.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 86 | #include <linux/atomic.h> |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 87 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | #include <linux/bitops.h> |
| 89 | #include <linux/spinlock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | #include <linux/init.h> |
| 91 | |
| 92 | /****** RocketPort includes ******/ |
| 93 | |
| 94 | #include "rocket_int.h" |
| 95 | #include "rocket.h" |
| 96 | |
| 97 | #define ROCKET_VERSION "2.09" |
| 98 | #define ROCKET_DATE "12-June-2003" |
| 99 | |
| 100 | /****** RocketPort Local Variables ******/ |
| 101 | |
Jiri Slaby | 40565f1 | 2007-02-12 00:52:31 -0800 | [diff] [blame] | 102 | static void rp_do_poll(unsigned long dummy); |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | static struct tty_driver *rocket_driver; |
| 105 | |
| 106 | static struct rocket_version driver_version = { |
| 107 | ROCKET_VERSION, ROCKET_DATE |
| 108 | }; |
| 109 | |
| 110 | static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ |
| 111 | static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ |
| 112 | /* eg. Bit 0 indicates port 0 has xmit data, ... */ |
| 113 | static atomic_t rp_num_ports_open; /* Number of serial ports open */ |
Jiri Slaby | 40565f1 | 2007-02-12 00:52:31 -0800 | [diff] [blame] | 114 | static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 116 | static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ |
| 117 | static unsigned long board2; |
| 118 | static unsigned long board3; |
| 119 | static unsigned long board4; |
| 120 | static unsigned long controller; |
| 121 | static int support_low_speed; |
| 122 | static unsigned long modem1; |
| 123 | static unsigned long modem2; |
| 124 | static unsigned long modem3; |
| 125 | static unsigned long modem4; |
| 126 | static unsigned long pc104_1[8]; |
| 127 | static unsigned long pc104_2[8]; |
| 128 | static unsigned long pc104_3[8]; |
| 129 | static unsigned long pc104_4[8]; |
| 130 | static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; |
| 131 | |
| 132 | static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ |
| 133 | static unsigned long rcktpt_io_addr[NUM_BOARDS]; |
| 134 | static int rcktpt_type[NUM_BOARDS]; |
| 135 | static int is_PCI[NUM_BOARDS]; |
| 136 | static rocketModel_t rocketModel[NUM_BOARDS]; |
| 137 | static int max_board; |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 138 | static const struct tty_port_operations rocket_port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
| 140 | /* |
| 141 | * The following arrays define the interrupt bits corresponding to each AIOP. |
| 142 | * These bits are different between the ISA and regular PCI boards and the |
| 143 | * Universal PCI boards. |
| 144 | */ |
| 145 | |
| 146 | static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { |
| 147 | AIOP_INTR_BIT_0, |
| 148 | AIOP_INTR_BIT_1, |
| 149 | AIOP_INTR_BIT_2, |
| 150 | AIOP_INTR_BIT_3 |
| 151 | }; |
| 152 | |
| 153 | static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { |
| 154 | UPCI_AIOP_INTR_BIT_0, |
| 155 | UPCI_AIOP_INTR_BIT_1, |
| 156 | UPCI_AIOP_INTR_BIT_2, |
| 157 | UPCI_AIOP_INTR_BIT_3 |
| 158 | }; |
| 159 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 160 | static Byte_t RData[RDATASIZE] = { |
| 161 | 0x00, 0x09, 0xf6, 0x82, |
| 162 | 0x02, 0x09, 0x86, 0xfb, |
| 163 | 0x04, 0x09, 0x00, 0x0a, |
| 164 | 0x06, 0x09, 0x01, 0x0a, |
| 165 | 0x08, 0x09, 0x8a, 0x13, |
| 166 | 0x0a, 0x09, 0xc5, 0x11, |
| 167 | 0x0c, 0x09, 0x86, 0x85, |
| 168 | 0x0e, 0x09, 0x20, 0x0a, |
| 169 | 0x10, 0x09, 0x21, 0x0a, |
| 170 | 0x12, 0x09, 0x41, 0xff, |
| 171 | 0x14, 0x09, 0x82, 0x00, |
| 172 | 0x16, 0x09, 0x82, 0x7b, |
| 173 | 0x18, 0x09, 0x8a, 0x7d, |
| 174 | 0x1a, 0x09, 0x88, 0x81, |
| 175 | 0x1c, 0x09, 0x86, 0x7a, |
| 176 | 0x1e, 0x09, 0x84, 0x81, |
| 177 | 0x20, 0x09, 0x82, 0x7c, |
| 178 | 0x22, 0x09, 0x0a, 0x0a |
| 179 | }; |
| 180 | |
| 181 | static Byte_t RRegData[RREGDATASIZE] = { |
| 182 | 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */ |
| 183 | 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */ |
| 184 | 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */ |
| 185 | 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */ |
| 186 | 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */ |
| 187 | 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */ |
| 188 | 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */ |
| 189 | 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */ |
| 190 | 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */ |
| 191 | 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */ |
| 192 | 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */ |
| 193 | 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */ |
| 194 | 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */ |
| 195 | }; |
| 196 | |
| 197 | static CONTROLLER_T sController[CTL_SIZE] = { |
| 198 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| 199 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| 200 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| 201 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| 202 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| 203 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| 204 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| 205 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}} |
| 206 | }; |
| 207 | |
| 208 | static Byte_t sBitMapClrTbl[8] = { |
| 209 | 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f |
| 210 | }; |
| 211 | |
| 212 | static Byte_t sBitMapSetTbl[8] = { |
| 213 | 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 |
| 214 | }; |
| 215 | |
| 216 | static int sClockPrescale = 0x14; |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* |
| 219 | * Line number is the ttySIx number (x), the Minor number. We |
| 220 | * assign them sequentially, starting at zero. The following |
| 221 | * array keeps track of the line number assigned to a given board/aiop/channel. |
| 222 | */ |
| 223 | static unsigned char lineNumbers[MAX_RP_PORTS]; |
| 224 | static unsigned long nextLineNumber; |
| 225 | |
| 226 | /***** RocketPort Static Prototypes *********/ |
| 227 | static int __init init_ISA(int i); |
| 228 | static void rp_wait_until_sent(struct tty_struct *tty, int timeout); |
| 229 | static void rp_flush_buffer(struct tty_struct *tty); |
| 230 | static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); |
| 231 | static unsigned char GetLineNumber(int ctrl, int aiop, int ch); |
| 232 | static unsigned char SetLineNumber(int ctrl, int aiop, int ch); |
| 233 | static void rp_start(struct tty_struct *tty); |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 234 | static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
| 235 | int ChanNum); |
| 236 | static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode); |
| 237 | static void sFlushRxFIFO(CHANNEL_T * ChP); |
| 238 | static void sFlushTxFIFO(CHANNEL_T * ChP); |
| 239 | static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags); |
| 240 | static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags); |
| 241 | static void sModemReset(CONTROLLER_T * CtlP, int chan, int on); |
| 242 | static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on); |
| 243 | static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data); |
| 244 | static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, |
| 245 | ByteIO_t * AiopIOList, int AiopIOListSize, |
| 246 | WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, |
| 247 | int PeriodicOnly, int altChanRingIndicator, |
| 248 | int UPCIRingInd); |
| 249 | static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, |
| 250 | ByteIO_t * AiopIOList, int AiopIOListSize, |
| 251 | int IRQNum, Byte_t Frequency, int PeriodicOnly); |
| 252 | static int sReadAiopID(ByteIO_t io); |
| 253 | static int sReadAiopNumChan(WordIO_t io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | MODULE_AUTHOR("Theodore Ts'o"); |
| 256 | MODULE_DESCRIPTION("Comtrol RocketPort driver"); |
| 257 | module_param(board1, ulong, 0); |
| 258 | MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); |
| 259 | module_param(board2, ulong, 0); |
| 260 | MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); |
| 261 | module_param(board3, ulong, 0); |
| 262 | MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); |
| 263 | module_param(board4, ulong, 0); |
| 264 | MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); |
| 265 | module_param(controller, ulong, 0); |
| 266 | MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); |
| 267 | module_param(support_low_speed, bool, 0); |
| 268 | MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); |
| 269 | module_param(modem1, ulong, 0); |
| 270 | MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); |
| 271 | module_param(modem2, ulong, 0); |
| 272 | MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); |
| 273 | module_param(modem3, ulong, 0); |
| 274 | MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); |
| 275 | module_param(modem4, ulong, 0); |
| 276 | MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); |
| 277 | module_param_array(pc104_1, ulong, NULL, 0); |
| 278 | MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); |
| 279 | module_param_array(pc104_2, ulong, NULL, 0); |
| 280 | MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); |
| 281 | module_param_array(pc104_3, ulong, NULL, 0); |
| 282 | MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); |
| 283 | module_param_array(pc104_4, ulong, NULL, 0); |
| 284 | MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); |
| 285 | |
Bjorn Helgaas | d269cdd | 2005-10-30 15:03:14 -0800 | [diff] [blame] | 286 | static int rp_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | static void rp_cleanup_module(void); |
| 288 | |
| 289 | module_init(rp_init); |
| 290 | module_exit(rp_cleanup_module); |
| 291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | MODULE_LICENSE("Dual BSD/GPL"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
| 295 | /*************************************************************************/ |
| 296 | /* Module code starts here */ |
| 297 | |
| 298 | static inline int rocket_paranoia_check(struct r_port *info, |
| 299 | const char *routine) |
| 300 | { |
| 301 | #ifdef ROCKET_PARANOIA_CHECK |
| 302 | if (!info) |
| 303 | return 1; |
| 304 | if (info->magic != RPORT_MAGIC) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 305 | printk(KERN_WARNING "Warning: bad magic number for rocketport " |
| 306 | "struct in %s\n", routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | return 1; |
| 308 | } |
| 309 | #endif |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | |
| 314 | /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals |
| 315 | * that receive data is present on a serial port. Pulls data from FIFO, moves it into the |
| 316 | * tty layer. |
| 317 | */ |
| 318 | static void rp_do_receive(struct r_port *info, |
| 319 | struct tty_struct *tty, |
| 320 | CHANNEL_t * cp, unsigned int ChanStatus) |
| 321 | { |
| 322 | unsigned int CharNStat; |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 323 | int ToRecv, wRecv, space; |
| 324 | unsigned char *cbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
| 326 | ToRecv = sGetRxCnt(cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | #ifdef ROCKET_DEBUG_INTR |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 328 | printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | #endif |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 330 | if (ToRecv == 0) |
| 331 | return; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /* |
| 334 | * if status indicates there are errored characters in the |
| 335 | * FIFO, then enter status mode (a word in FIFO holds |
| 336 | * character and status). |
| 337 | */ |
| 338 | if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { |
| 339 | if (!(ChanStatus & STATMODE)) { |
| 340 | #ifdef ROCKET_DEBUG_RECEIVE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 341 | printk(KERN_INFO "Entering STATMODE...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | #endif |
| 343 | ChanStatus |= STATMODE; |
| 344 | sEnRxStatusMode(cp); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | /* |
| 349 | * if we previously entered status mode, then read down the |
| 350 | * FIFO one word at a time, pulling apart the character and |
| 351 | * the status. Update error counters depending on status |
| 352 | */ |
| 353 | if (ChanStatus & STATMODE) { |
| 354 | #ifdef ROCKET_DEBUG_RECEIVE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 355 | printk(KERN_INFO "Ignore %x, read %x...\n", |
| 356 | info->ignore_status_mask, info->read_status_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | #endif |
| 358 | while (ToRecv) { |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 359 | char flag; |
| 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | CharNStat = sInW(sGetTxRxDataIO(cp)); |
| 362 | #ifdef ROCKET_DEBUG_RECEIVE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 363 | printk(KERN_INFO "%x...\n", CharNStat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | #endif |
| 365 | if (CharNStat & STMBREAKH) |
| 366 | CharNStat &= ~(STMFRAMEH | STMPARITYH); |
| 367 | if (CharNStat & info->ignore_status_mask) { |
| 368 | ToRecv--; |
| 369 | continue; |
| 370 | } |
| 371 | CharNStat &= info->read_status_mask; |
| 372 | if (CharNStat & STMBREAKH) |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 373 | flag = TTY_BREAK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | else if (CharNStat & STMPARITYH) |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 375 | flag = TTY_PARITY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | else if (CharNStat & STMFRAMEH) |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 377 | flag = TTY_FRAME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | else if (CharNStat & STMRCVROVRH) |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 379 | flag = TTY_OVERRUN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | else |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 381 | flag = TTY_NORMAL; |
| 382 | tty_insert_flip_char(tty, CharNStat & 0xff, flag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | ToRecv--; |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * after we've emptied the FIFO in status mode, turn |
| 388 | * status mode back off |
| 389 | */ |
| 390 | if (sGetRxCnt(cp) == 0) { |
| 391 | #ifdef ROCKET_DEBUG_RECEIVE |
| 392 | printk(KERN_INFO "Status mode off.\n"); |
| 393 | #endif |
| 394 | sDisRxStatusMode(cp); |
| 395 | } |
| 396 | } else { |
| 397 | /* |
| 398 | * we aren't in status mode, so read down the FIFO two |
| 399 | * characters at time by doing repeated word IO |
| 400 | * transfer. |
| 401 | */ |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 402 | space = tty_prepare_flip_string(tty, &cbuf, ToRecv); |
| 403 | if (space < ToRecv) { |
| 404 | #ifdef ROCKET_DEBUG_RECEIVE |
| 405 | printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space); |
| 406 | #endif |
| 407 | if (space <= 0) |
| 408 | return; |
| 409 | ToRecv = space; |
| 410 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | wRecv = ToRecv >> 1; |
| 412 | if (wRecv) |
| 413 | sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); |
| 414 | if (ToRecv & 1) |
| 415 | cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
| 417 | /* Push the data up to the tty layer */ |
Paul Fulghum | cc44a81 | 2006-06-25 05:49:12 -0700 | [diff] [blame] | 418 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Serial port transmit data function. Called from the timer polling loop as a |
| 423 | * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready |
| 424 | * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is |
| 425 | * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. |
| 426 | */ |
| 427 | static void rp_do_transmit(struct r_port *info) |
| 428 | { |
| 429 | int c; |
| 430 | CHANNEL_t *cp = &info->channel; |
| 431 | struct tty_struct *tty; |
| 432 | unsigned long flags; |
| 433 | |
| 434 | #ifdef ROCKET_DEBUG_INTR |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 435 | printk(KERN_DEBUG "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | #endif |
| 437 | if (!info) |
| 438 | return; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 439 | tty = tty_port_tty_get(&info->port); |
| 440 | |
| 441 | if (tty == NULL) { |
| 442 | printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 444 | return; |
| 445 | } |
| 446 | |
| 447 | spin_lock_irqsave(&info->slock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| 449 | |
| 450 | /* Loop sending data to FIFO until done or FIFO full */ |
| 451 | while (1) { |
| 452 | if (tty->stopped || tty->hw_stopped) |
| 453 | break; |
Harvey Harrison | 709107f | 2008-04-30 00:53:51 -0700 | [diff] [blame] | 454 | c = min(info->xmit_fifo_room, info->xmit_cnt); |
| 455 | c = min(c, XMIT_BUF_SIZE - info->xmit_tail); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | if (c <= 0 || info->xmit_fifo_room <= 0) |
| 457 | break; |
| 458 | sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); |
| 459 | if (c & 1) |
| 460 | sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); |
| 461 | info->xmit_tail += c; |
| 462 | info->xmit_tail &= XMIT_BUF_SIZE - 1; |
| 463 | info->xmit_cnt -= c; |
| 464 | info->xmit_fifo_room -= c; |
| 465 | #ifdef ROCKET_DEBUG_INTR |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 466 | printk(KERN_INFO "tx %d chars...\n", c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | #endif |
| 468 | } |
| 469 | |
| 470 | if (info->xmit_cnt == 0) |
| 471 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 472 | |
| 473 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 474 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| 476 | wake_up_interruptible(&tty->poll_wait); |
| 477 | #endif |
| 478 | } |
| 479 | |
| 480 | spin_unlock_irqrestore(&info->slock, flags); |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 481 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
| 483 | #ifdef ROCKET_DEBUG_INTR |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 484 | printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | info->xmit_tail, info->xmit_fifo_room); |
| 486 | #endif |
| 487 | } |
| 488 | |
| 489 | /* |
| 490 | * Called when a serial port signals it has read data in it's RX FIFO. |
| 491 | * It checks what interrupts are pending and services them, including |
| 492 | * receiving serial data. |
| 493 | */ |
| 494 | static void rp_handle_port(struct r_port *info) |
| 495 | { |
| 496 | CHANNEL_t *cp; |
| 497 | struct tty_struct *tty; |
| 498 | unsigned int IntMask, ChanStatus; |
| 499 | |
| 500 | if (!info) |
| 501 | return; |
| 502 | |
Alan Cox | 21bed70 | 2009-01-02 13:48:23 +0000 | [diff] [blame] | 503 | if ((info->port.flags & ASYNC_INITIALIZED) == 0) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 504 | printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " |
| 505 | "info->flags & NOT_INIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return; |
| 507 | } |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 508 | tty = tty_port_tty_get(&info->port); |
| 509 | if (!tty) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 510 | printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 511 | "tty==NULL\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | return; |
| 513 | } |
| 514 | cp = &info->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | IntMask = sGetChanIntID(cp) & info->intmask; |
| 517 | #ifdef ROCKET_DEBUG_INTR |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 518 | printk(KERN_INFO "rp_interrupt %02x...\n", IntMask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | #endif |
| 520 | ChanStatus = sGetChanStatus(cp); |
| 521 | if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ |
| 522 | rp_do_receive(info, tty, cp, ChanStatus); |
| 523 | } |
| 524 | if (IntMask & DELTA_CD) { /* CD change */ |
| 525 | #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 526 | printk(KERN_INFO "ttyR%d CD now %s...\n", info->line, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | (ChanStatus & CD_ACT) ? "on" : "off"); |
| 528 | #endif |
| 529 | if (!(ChanStatus & CD_ACT) && info->cd_status) { |
| 530 | #ifdef ROCKET_DEBUG_HANGUP |
| 531 | printk(KERN_INFO "CD drop, calling hangup.\n"); |
| 532 | #endif |
| 533 | tty_hangup(tty); |
| 534 | } |
| 535 | info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 536 | wake_up_interruptible(&info->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | } |
| 538 | #ifdef ROCKET_DEBUG_INTR |
| 539 | if (IntMask & DELTA_CTS) { /* CTS change */ |
| 540 | printk(KERN_INFO "CTS change...\n"); |
| 541 | } |
| 542 | if (IntMask & DELTA_DSR) { /* DSR change */ |
| 543 | printk(KERN_INFO "DSR change...\n"); |
| 544 | } |
| 545 | #endif |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 546 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | } |
| 548 | |
| 549 | /* |
| 550 | * The top level polling routine. Repeats every 1/100 HZ (10ms). |
| 551 | */ |
| 552 | static void rp_do_poll(unsigned long dummy) |
| 553 | { |
| 554 | CONTROLLER_t *ctlp; |
Jiri Slaby | 6c0286b | 2007-10-18 03:06:29 -0700 | [diff] [blame] | 555 | int ctrl, aiop, ch, line; |
| 556 | unsigned int xmitmask, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | unsigned int CtlMask; |
| 558 | unsigned char AiopMask; |
| 559 | Word_t bit; |
| 560 | |
| 561 | /* Walk through all the boards (ctrl's) */ |
| 562 | for (ctrl = 0; ctrl < max_board; ctrl++) { |
| 563 | if (rcktpt_io_addr[ctrl] <= 0) |
| 564 | continue; |
| 565 | |
| 566 | /* Get a ptr to the board's control struct */ |
| 567 | ctlp = sCtlNumToCtlPtr(ctrl); |
| 568 | |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 569 | /* Get the interrupt status from the board */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | #ifdef CONFIG_PCI |
| 571 | if (ctlp->BusType == isPCI) |
| 572 | CtlMask = sPCIGetControllerIntStatus(ctlp); |
| 573 | else |
| 574 | #endif |
| 575 | CtlMask = sGetControllerIntStatus(ctlp); |
| 576 | |
| 577 | /* Check if any AIOP read bits are set */ |
| 578 | for (aiop = 0; CtlMask; aiop++) { |
| 579 | bit = ctlp->AiopIntrBits[aiop]; |
| 580 | if (CtlMask & bit) { |
| 581 | CtlMask &= ~bit; |
| 582 | AiopMask = sGetAiopIntStatus(ctlp, aiop); |
| 583 | |
| 584 | /* Check if any port read bits are set */ |
| 585 | for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { |
| 586 | if (AiopMask & 1) { |
| 587 | |
| 588 | /* Get the line number (/dev/ttyRx number). */ |
| 589 | /* Read the data from the port. */ |
| 590 | line = GetLineNumber(ctrl, aiop, ch); |
| 591 | rp_handle_port(rp_table[line]); |
| 592 | } |
| 593 | } |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | xmitmask = xmit_flags[ctrl]; |
| 598 | |
| 599 | /* |
| 600 | * xmit_flags contains bit-significant flags, indicating there is data |
| 601 | * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port |
| 602 | * 1, ... (32 total possible). The variable i has the aiop and ch |
| 603 | * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). |
| 604 | */ |
| 605 | if (xmitmask) { |
| 606 | for (i = 0; i < rocketModel[ctrl].numPorts; i++) { |
| 607 | if (xmitmask & (1 << i)) { |
| 608 | aiop = (i & 0x18) >> 3; |
| 609 | ch = i & 0x07; |
| 610 | line = GetLineNumber(ctrl, aiop, ch); |
| 611 | rp_do_transmit(rp_table[line]); |
| 612 | } |
| 613 | } |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | /* |
| 618 | * Reset the timer so we get called at the next clock tick (10ms). |
| 619 | */ |
| 620 | if (atomic_read(&rp_num_ports_open)) |
| 621 | mod_timer(&rocket_timer, jiffies + POLL_PERIOD); |
| 622 | } |
| 623 | |
| 624 | /* |
| 625 | * Initializes the r_port structure for a port, as well as enabling the port on |
| 626 | * the board. |
| 627 | * Inputs: board, aiop, chan numbers |
| 628 | */ |
| 629 | static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) |
| 630 | { |
| 631 | unsigned rocketMode; |
| 632 | struct r_port *info; |
| 633 | int line; |
| 634 | CONTROLLER_T *ctlp; |
| 635 | |
| 636 | /* Get the next available line number */ |
| 637 | line = SetLineNumber(board, aiop, chan); |
| 638 | |
| 639 | ctlp = sCtlNumToCtlPtr(board); |
| 640 | |
| 641 | /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 642 | info = kzalloc(sizeof (struct r_port), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | if (!info) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 644 | printk(KERN_ERR "Couldn't allocate info struct for line #%d\n", |
| 645 | line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | return; |
| 647 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
| 649 | info->magic = RPORT_MAGIC; |
| 650 | info->line = line; |
| 651 | info->ctlp = ctlp; |
| 652 | info->board = board; |
| 653 | info->aiop = aiop; |
| 654 | info->chan = chan; |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 655 | tty_port_init(&info->port); |
| 656 | info->port.ops = &rocket_port_ops; |
Jiri Slaby | 8cf5a8c | 2007-10-18 03:06:25 -0700 | [diff] [blame] | 657 | init_completion(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | info->flags &= ~ROCKET_MODE_MASK; |
| 659 | switch (pc104[board][line]) { |
| 660 | case 422: |
| 661 | info->flags |= ROCKET_MODE_RS422; |
| 662 | break; |
| 663 | case 485: |
| 664 | info->flags |= ROCKET_MODE_RS485; |
| 665 | break; |
| 666 | case 232: |
| 667 | default: |
| 668 | info->flags |= ROCKET_MODE_RS232; |
| 669 | break; |
| 670 | } |
| 671 | |
| 672 | info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; |
| 673 | if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 674 | printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n", |
| 675 | board, aiop, chan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | kfree(info); |
| 677 | return; |
| 678 | } |
| 679 | |
| 680 | rocketMode = info->flags & ROCKET_MODE_MASK; |
| 681 | |
| 682 | if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) |
| 683 | sEnRTSToggle(&info->channel); |
| 684 | else |
| 685 | sDisRTSToggle(&info->channel); |
| 686 | |
| 687 | if (ctlp->boardType == ROCKET_TYPE_PC104) { |
| 688 | switch (rocketMode) { |
| 689 | case ROCKET_MODE_RS485: |
| 690 | sSetInterfaceMode(&info->channel, InterfaceModeRS485); |
| 691 | break; |
| 692 | case ROCKET_MODE_RS422: |
| 693 | sSetInterfaceMode(&info->channel, InterfaceModeRS422); |
| 694 | break; |
| 695 | case ROCKET_MODE_RS232: |
| 696 | default: |
| 697 | if (info->flags & ROCKET_RTS_TOGGLE) |
| 698 | sSetInterfaceMode(&info->channel, InterfaceModeRS232T); |
| 699 | else |
| 700 | sSetInterfaceMode(&info->channel, InterfaceModeRS232); |
| 701 | break; |
| 702 | } |
| 703 | } |
| 704 | spin_lock_init(&info->slock); |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 705 | mutex_init(&info->write_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | rp_table[line] = info; |
Jiri Slaby | ac6aec2 | 2007-10-18 03:06:26 -0700 | [diff] [blame] | 707 | tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev : |
| 708 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | /* |
| 712 | * Configures a rocketport port according to its termio settings. Called from |
| 713 | * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. |
| 714 | */ |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 715 | static void configure_r_port(struct tty_struct *tty, struct r_port *info, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 716 | struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | { |
| 718 | unsigned cflag; |
| 719 | unsigned long flags; |
| 720 | unsigned rocketMode; |
| 721 | int bits, baud, divisor; |
| 722 | CHANNEL_t *cp; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 723 | struct ktermios *t = tty->termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | cp = &info->channel; |
Alan Cox | 6df3526 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 726 | cflag = t->c_cflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | |
| 728 | /* Byte size and parity */ |
| 729 | if ((cflag & CSIZE) == CS8) { |
| 730 | sSetData8(cp); |
| 731 | bits = 10; |
| 732 | } else { |
| 733 | sSetData7(cp); |
| 734 | bits = 9; |
| 735 | } |
| 736 | if (cflag & CSTOPB) { |
| 737 | sSetStop2(cp); |
| 738 | bits++; |
| 739 | } else { |
| 740 | sSetStop1(cp); |
| 741 | } |
| 742 | |
| 743 | if (cflag & PARENB) { |
| 744 | sEnParity(cp); |
| 745 | bits++; |
| 746 | if (cflag & PARODD) { |
| 747 | sSetOddParity(cp); |
| 748 | } else { |
| 749 | sSetEvenParity(cp); |
| 750 | } |
| 751 | } else { |
| 752 | sDisParity(cp); |
| 753 | } |
| 754 | |
| 755 | /* baud rate */ |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 756 | baud = tty_get_baud_rate(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | if (!baud) |
| 758 | baud = 9600; |
| 759 | divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; |
| 760 | if ((divisor >= 8192 || divisor < 0) && old_termios) { |
Alan Cox | 6df3526 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 761 | baud = tty_termios_baud_rate(old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | if (!baud) |
| 763 | baud = 9600; |
| 764 | divisor = (rp_baud_base[info->board] / baud) - 1; |
| 765 | } |
| 766 | if (divisor >= 8192 || divisor < 0) { |
| 767 | baud = 9600; |
| 768 | divisor = (rp_baud_base[info->board] / baud) - 1; |
| 769 | } |
| 770 | info->cps = baud / bits; |
| 771 | sSetBaud(cp, divisor); |
| 772 | |
Alan Cox | 6df3526 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 773 | /* FIXME: Should really back compute a baud rate from the divisor */ |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 774 | tty_encode_baud_rate(tty, baud, baud); |
Alan Cox | 6df3526 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | if (cflag & CRTSCTS) { |
| 777 | info->intmask |= DELTA_CTS; |
| 778 | sEnCTSFlowCtl(cp); |
| 779 | } else { |
| 780 | info->intmask &= ~DELTA_CTS; |
| 781 | sDisCTSFlowCtl(cp); |
| 782 | } |
| 783 | if (cflag & CLOCAL) { |
| 784 | info->intmask &= ~DELTA_CD; |
| 785 | } else { |
| 786 | spin_lock_irqsave(&info->slock, flags); |
| 787 | if (sGetChanStatus(cp) & CD_ACT) |
| 788 | info->cd_status = 1; |
| 789 | else |
| 790 | info->cd_status = 0; |
| 791 | info->intmask |= DELTA_CD; |
| 792 | spin_unlock_irqrestore(&info->slock, flags); |
| 793 | } |
| 794 | |
| 795 | /* |
| 796 | * Handle software flow control in the board |
| 797 | */ |
| 798 | #ifdef ROCKET_SOFT_FLOW |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 799 | if (I_IXON(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | sEnTxSoftFlowCtl(cp); |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 801 | if (I_IXANY(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | sEnIXANY(cp); |
| 803 | } else { |
| 804 | sDisIXANY(cp); |
| 805 | } |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 806 | sSetTxXONChar(cp, START_CHAR(tty)); |
| 807 | sSetTxXOFFChar(cp, STOP_CHAR(tty)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } else { |
| 809 | sDisTxSoftFlowCtl(cp); |
| 810 | sDisIXANY(cp); |
| 811 | sClrTxXOFF(cp); |
| 812 | } |
| 813 | #endif |
| 814 | |
| 815 | /* |
| 816 | * Set up ignore/read mask words |
| 817 | */ |
| 818 | info->read_status_mask = STMRCVROVRH | 0xFF; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 819 | if (I_INPCK(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | info->read_status_mask |= STMFRAMEH | STMPARITYH; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 821 | if (I_BRKINT(tty) || I_PARMRK(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | info->read_status_mask |= STMBREAKH; |
| 823 | |
| 824 | /* |
| 825 | * Characters to ignore |
| 826 | */ |
| 827 | info->ignore_status_mask = 0; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 828 | if (I_IGNPAR(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | info->ignore_status_mask |= STMFRAMEH | STMPARITYH; |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 830 | if (I_IGNBRK(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | info->ignore_status_mask |= STMBREAKH; |
| 832 | /* |
| 833 | * If we're ignoring parity and break indicators, |
| 834 | * ignore overruns too. (For real raw support). |
| 835 | */ |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 836 | if (I_IGNPAR(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | info->ignore_status_mask |= STMRCVROVRH; |
| 838 | } |
| 839 | |
| 840 | rocketMode = info->flags & ROCKET_MODE_MASK; |
| 841 | |
| 842 | if ((info->flags & ROCKET_RTS_TOGGLE) |
| 843 | || (rocketMode == ROCKET_MODE_RS485)) |
| 844 | sEnRTSToggle(cp); |
| 845 | else |
| 846 | sDisRTSToggle(cp); |
| 847 | |
| 848 | sSetRTS(&info->channel); |
| 849 | |
| 850 | if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { |
| 851 | switch (rocketMode) { |
| 852 | case ROCKET_MODE_RS485: |
| 853 | sSetInterfaceMode(cp, InterfaceModeRS485); |
| 854 | break; |
| 855 | case ROCKET_MODE_RS422: |
| 856 | sSetInterfaceMode(cp, InterfaceModeRS422); |
| 857 | break; |
| 858 | case ROCKET_MODE_RS232: |
| 859 | default: |
| 860 | if (info->flags & ROCKET_RTS_TOGGLE) |
| 861 | sSetInterfaceMode(cp, InterfaceModeRS232T); |
| 862 | else |
| 863 | sSetInterfaceMode(cp, InterfaceModeRS232); |
| 864 | break; |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 869 | static int carrier_raised(struct tty_port *port) |
| 870 | { |
| 871 | struct r_port *info = container_of(port, struct r_port, port); |
| 872 | return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0; |
| 873 | } |
| 874 | |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 875 | static void dtr_rts(struct tty_port *port, int on) |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 876 | { |
| 877 | struct r_port *info = container_of(port, struct r_port, port); |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 878 | if (on) { |
| 879 | sSetDTR(&info->channel); |
| 880 | sSetRTS(&info->channel); |
| 881 | } else { |
| 882 | sClrDTR(&info->channel); |
| 883 | sClrRTS(&info->channel); |
| 884 | } |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 885 | } |
| 886 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | /* |
| 888 | * Exception handler that opens a serial port. Creates xmit_buf storage, fills in |
| 889 | * port's r_port struct. Initializes the port hardware. |
| 890 | */ |
| 891 | static int rp_open(struct tty_struct *tty, struct file *filp) |
| 892 | { |
| 893 | struct r_port *info; |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 894 | struct tty_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | int line = 0, retval; |
| 896 | CHANNEL_t *cp; |
| 897 | unsigned long page; |
| 898 | |
Jiri Slaby | f6de0c9 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 899 | line = tty->index; |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 900 | if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | return -ENXIO; |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 902 | port = &info->port; |
| 903 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | page = __get_free_page(GFP_KERNEL); |
| 905 | if (!page) |
| 906 | return -ENOMEM; |
| 907 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 908 | if (port->flags & ASYNC_CLOSING) { |
Jiri Slaby | 8cf5a8c | 2007-10-18 03:06:25 -0700 | [diff] [blame] | 909 | retval = wait_for_completion_interruptible(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | free_page(page); |
Jiri Slaby | 8cf5a8c | 2007-10-18 03:06:25 -0700 | [diff] [blame] | 911 | if (retval) |
| 912 | return retval; |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 913 | return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | /* |
| 917 | * We must not sleep from here until the port is marked fully in use. |
| 918 | */ |
| 919 | if (info->xmit_buf) |
| 920 | free_page(page); |
| 921 | else |
| 922 | info->xmit_buf = (unsigned char *) page; |
| 923 | |
| 924 | tty->driver_data = info; |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 925 | tty_port_tty_set(port, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 927 | if (port->count++ == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | atomic_inc(&rp_num_ports_open); |
| 929 | |
| 930 | #ifdef ROCKET_DEBUG_OPEN |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 931 | printk(KERN_INFO "rocket mod++ = %d...\n", |
| 932 | atomic_read(&rp_num_ports_open)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | #endif |
| 934 | } |
| 935 | #ifdef ROCKET_DEBUG_OPEN |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 936 | printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | #endif |
| 938 | |
| 939 | /* |
| 940 | * Info->count is now 1; so it's safe to sleep now. |
| 941 | */ |
Jiri Slaby | a391ad0 | 2009-06-11 12:40:17 +0100 | [diff] [blame] | 942 | if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | cp = &info->channel; |
| 944 | sSetRxTrigger(cp, TRIG_1); |
| 945 | if (sGetChanStatus(cp) & CD_ACT) |
| 946 | info->cd_status = 1; |
| 947 | else |
| 948 | info->cd_status = 0; |
| 949 | sDisRxStatusMode(cp); |
| 950 | sFlushRxFIFO(cp); |
| 951 | sFlushTxFIFO(cp); |
| 952 | |
| 953 | sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| 954 | sSetRxTrigger(cp, TRIG_1); |
| 955 | |
| 956 | sGetChanStatus(cp); |
| 957 | sDisRxStatusMode(cp); |
| 958 | sClrTxXOFF(cp); |
| 959 | |
| 960 | sDisCTSFlowCtl(cp); |
| 961 | sDisTxSoftFlowCtl(cp); |
| 962 | |
| 963 | sEnRxFIFO(cp); |
| 964 | sEnTransmit(cp); |
| 965 | |
Jiri Slaby | a391ad0 | 2009-06-11 12:40:17 +0100 | [diff] [blame] | 966 | set_bit(ASYNCB_INITIALIZED, &info->port.flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
| 968 | /* |
| 969 | * Set up the tty->alt_speed kludge |
| 970 | */ |
| 971 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 972 | tty->alt_speed = 57600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 974 | tty->alt_speed = 115200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 976 | tty->alt_speed = 230400; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 978 | tty->alt_speed = 460800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 980 | configure_r_port(tty, info, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | if (tty->termios->c_cflag & CBAUD) { |
| 982 | sSetDTR(cp); |
| 983 | sSetRTS(cp); |
| 984 | } |
| 985 | } |
| 986 | /* Starts (or resets) the maint polling loop */ |
| 987 | mod_timer(&rocket_timer, jiffies + POLL_PERIOD); |
| 988 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 989 | retval = tty_port_block_til_ready(port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | if (retval) { |
| 991 | #ifdef ROCKET_DEBUG_OPEN |
| 992 | printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); |
| 993 | #endif |
| 994 | return retval; |
| 995 | } |
| 996 | return 0; |
| 997 | } |
| 998 | |
| 999 | /* |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 1000 | * Exception handler that closes a serial port. info->port.count is considered critical. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | */ |
| 1002 | static void rp_close(struct tty_struct *tty, struct file *filp) |
| 1003 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1004 | struct r_port *info = tty->driver_data; |
Alan Cox | c1314a4 | 2009-01-02 13:48:17 +0000 | [diff] [blame] | 1005 | struct tty_port *port = &info->port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | int timeout; |
| 1007 | CHANNEL_t *cp; |
| 1008 | |
| 1009 | if (rocket_paranoia_check(info, "rp_close")) |
| 1010 | return; |
| 1011 | |
| 1012 | #ifdef ROCKET_DEBUG_OPEN |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 1013 | printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | #endif |
| 1015 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 1016 | if (tty_port_close_start(port, tty, filp) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1019 | mutex_lock(&port->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | cp = &info->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | /* |
| 1022 | * Before we drop DTR, make sure the UART transmitter |
| 1023 | * has completely drained; this is especially |
| 1024 | * important if there is a transmit FIFO! |
| 1025 | */ |
| 1026 | timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; |
| 1027 | if (timeout == 0) |
| 1028 | timeout = 1; |
| 1029 | rp_wait_until_sent(tty, timeout); |
| 1030 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 1031 | |
| 1032 | sDisTransmit(cp); |
| 1033 | sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| 1034 | sDisCTSFlowCtl(cp); |
| 1035 | sDisTxSoftFlowCtl(cp); |
| 1036 | sClrTxXOFF(cp); |
| 1037 | sFlushRxFIFO(cp); |
| 1038 | sFlushTxFIFO(cp); |
| 1039 | sClrRTS(cp); |
| 1040 | if (C_HUPCL(tty)) |
| 1041 | sClrDTR(cp); |
| 1042 | |
Jiri Slaby | f6de0c9 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1043 | rp_flush_buffer(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | |
| 1045 | tty_ldisc_flush(tty); |
| 1046 | |
| 1047 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 1048 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 1049 | /* We can't yet use tty_port_close_end as the buffer handling in this |
| 1050 | driver is a bit different to the usual */ |
| 1051 | |
Alan Cox | c1314a4 | 2009-01-02 13:48:17 +0000 | [diff] [blame] | 1052 | if (port->blocked_open) { |
| 1053 | if (port->close_delay) { |
| 1054 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | } |
Alan Cox | c1314a4 | 2009-01-02 13:48:17 +0000 | [diff] [blame] | 1056 | wake_up_interruptible(&port->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | } else { |
| 1058 | if (info->xmit_buf) { |
| 1059 | free_page((unsigned long) info->xmit_buf); |
| 1060 | info->xmit_buf = NULL; |
| 1061 | } |
| 1062 | } |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1063 | spin_lock_irq(&port->lock); |
Alan Cox | 21bed70 | 2009-01-02 13:48:23 +0000 | [diff] [blame] | 1064 | info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | tty->closing = 0; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1066 | spin_unlock_irq(&port->lock); |
| 1067 | mutex_unlock(&port->mutex); |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 1068 | tty_port_tty_set(port, NULL); |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1069 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 1070 | wake_up_interruptible(&port->close_wait); |
Jiri Slaby | 8cf5a8c | 2007-10-18 03:06:25 -0700 | [diff] [blame] | 1071 | complete_all(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | atomic_dec(&rp_num_ports_open); |
| 1073 | |
| 1074 | #ifdef ROCKET_DEBUG_OPEN |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1075 | printk(KERN_INFO "rocket mod-- = %d...\n", |
| 1076 | atomic_read(&rp_num_ports_open)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); |
| 1078 | #endif |
| 1079 | |
| 1080 | } |
| 1081 | |
| 1082 | static void rp_set_termios(struct tty_struct *tty, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1083 | struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1085 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | CHANNEL_t *cp; |
| 1087 | unsigned cflag; |
| 1088 | |
| 1089 | if (rocket_paranoia_check(info, "rp_set_termios")) |
| 1090 | return; |
| 1091 | |
| 1092 | cflag = tty->termios->c_cflag; |
| 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | /* |
| 1095 | * This driver doesn't support CS5 or CS6 |
| 1096 | */ |
| 1097 | if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) |
| 1098 | tty->termios->c_cflag = |
| 1099 | ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); |
Alan Cox | 6df3526 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 1100 | /* Or CMSPAR */ |
| 1101 | tty->termios->c_cflag &= ~CMSPAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1103 | configure_r_port(tty, info, old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | |
| 1105 | cp = &info->channel; |
| 1106 | |
| 1107 | /* Handle transition to B0 status */ |
| 1108 | if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { |
| 1109 | sClrDTR(cp); |
| 1110 | sClrRTS(cp); |
| 1111 | } |
| 1112 | |
| 1113 | /* Handle transition away from B0 status */ |
| 1114 | if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { |
| 1115 | if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) |
| 1116 | sSetRTS(cp); |
| 1117 | sSetDTR(cp); |
| 1118 | } |
| 1119 | |
| 1120 | if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { |
| 1121 | tty->hw_stopped = 0; |
| 1122 | rp_start(tty); |
| 1123 | } |
| 1124 | } |
| 1125 | |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1126 | static int rp_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1128 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | unsigned long flags; |
| 1130 | |
| 1131 | if (rocket_paranoia_check(info, "rp_break")) |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1132 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | |
| 1134 | spin_lock_irqsave(&info->slock, flags); |
| 1135 | if (break_state == -1) |
| 1136 | sSendBreak(&info->channel); |
| 1137 | else |
| 1138 | sClrBreak(&info->channel); |
| 1139 | spin_unlock_irqrestore(&info->slock, flags); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1140 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | /* |
| 1144 | * sGetChanRI used to be a macro in rocket_int.h. When the functionality for |
| 1145 | * the UPCI boards was added, it was decided to make this a function because |
| 1146 | * the macro was getting too complicated. All cases except the first one |
| 1147 | * (UPCIRingInd) are taken directly from the original macro. |
| 1148 | */ |
| 1149 | static int sGetChanRI(CHANNEL_T * ChP) |
| 1150 | { |
| 1151 | CONTROLLER_t *CtlP = ChP->CtlP; |
| 1152 | int ChanNum = ChP->ChanNum; |
| 1153 | int RingInd = 0; |
| 1154 | |
| 1155 | if (CtlP->UPCIRingInd) |
| 1156 | RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); |
| 1157 | else if (CtlP->AltChanRingIndicator) |
| 1158 | RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; |
| 1159 | else if (CtlP->boardType == ROCKET_TYPE_PC104) |
| 1160 | RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); |
| 1161 | |
| 1162 | return RingInd; |
| 1163 | } |
| 1164 | |
| 1165 | /********************************************************************************************/ |
| 1166 | /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ |
| 1167 | |
| 1168 | /* |
| 1169 | * Returns the state of the serial modem control lines. These next 2 functions |
| 1170 | * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. |
| 1171 | */ |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 1172 | static int rp_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1174 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | unsigned int control, result, ChanStatus; |
| 1176 | |
| 1177 | ChanStatus = sGetChanStatusLo(&info->channel); |
| 1178 | control = info->channel.TxControl[3]; |
| 1179 | result = ((control & SET_RTS) ? TIOCM_RTS : 0) | |
| 1180 | ((control & SET_DTR) ? TIOCM_DTR : 0) | |
| 1181 | ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | |
| 1182 | (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | |
| 1183 | ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | |
| 1184 | ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); |
| 1185 | |
| 1186 | return result; |
| 1187 | } |
| 1188 | |
| 1189 | /* |
| 1190 | * Sets the modem control lines |
| 1191 | */ |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 1192 | static int rp_tiocmset(struct tty_struct *tty, |
| 1193 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1195 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | |
| 1197 | if (set & TIOCM_RTS) |
| 1198 | info->channel.TxControl[3] |= SET_RTS; |
| 1199 | if (set & TIOCM_DTR) |
| 1200 | info->channel.TxControl[3] |= SET_DTR; |
| 1201 | if (clear & TIOCM_RTS) |
| 1202 | info->channel.TxControl[3] &= ~SET_RTS; |
| 1203 | if (clear & TIOCM_DTR) |
| 1204 | info->channel.TxControl[3] &= ~SET_DTR; |
| 1205 | |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 1206 | out32(info->channel.IndexAddr, info->channel.TxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | return 0; |
| 1208 | } |
| 1209 | |
| 1210 | static int get_config(struct r_port *info, struct rocket_config __user *retinfo) |
| 1211 | { |
| 1212 | struct rocket_config tmp; |
| 1213 | |
| 1214 | if (!retinfo) |
| 1215 | return -EFAULT; |
| 1216 | memset(&tmp, 0, sizeof (tmp)); |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1217 | mutex_lock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | tmp.line = info->line; |
| 1219 | tmp.flags = info->flags; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1220 | tmp.close_delay = info->port.close_delay; |
| 1221 | tmp.closing_wait = info->port.closing_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1223 | mutex_unlock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
| 1225 | if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) |
| 1226 | return -EFAULT; |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1230 | static int set_config(struct tty_struct *tty, struct r_port *info, |
| 1231 | struct rocket_config __user *new_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
| 1233 | struct rocket_config new_serial; |
| 1234 | |
| 1235 | if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) |
| 1236 | return -EFAULT; |
| 1237 | |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1238 | mutex_lock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | if (!capable(CAP_SYS_ADMIN)) |
| 1240 | { |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1241 | if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) { |
| 1242 | mutex_unlock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | return -EPERM; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1244 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1246 | configure_r_port(tty, info, NULL); |
Dan Carpenter | 49bf7ea | 2010-08-11 20:00:09 +0200 | [diff] [blame] | 1247 | mutex_unlock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1252 | info->port.close_delay = new_serial.close_delay; |
| 1253 | info->port.closing_wait = new_serial.closing_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | |
| 1255 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1256 | tty->alt_speed = 57600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1258 | tty->alt_speed = 115200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1260 | tty->alt_speed = 230400; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1262 | tty->alt_speed = 460800; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1263 | mutex_unlock(&info->port.mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1265 | configure_r_port(tty, info, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | return 0; |
| 1267 | } |
| 1268 | |
| 1269 | /* |
| 1270 | * This function fills in a rocket_ports struct with information |
| 1271 | * about what boards/ports are in the system. This info is passed |
| 1272 | * to user space. See setrocket.c where the info is used to create |
| 1273 | * the /dev/ttyRx ports. |
| 1274 | */ |
| 1275 | static int get_ports(struct r_port *info, struct rocket_ports __user *retports) |
| 1276 | { |
| 1277 | struct rocket_ports tmp; |
| 1278 | int board; |
| 1279 | |
| 1280 | if (!retports) |
| 1281 | return -EFAULT; |
| 1282 | memset(&tmp, 0, sizeof (tmp)); |
| 1283 | tmp.tty_major = rocket_driver->major; |
| 1284 | |
| 1285 | for (board = 0; board < 4; board++) { |
| 1286 | tmp.rocketModel[board].model = rocketModel[board].model; |
| 1287 | strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); |
| 1288 | tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; |
| 1289 | tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; |
| 1290 | tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; |
| 1291 | } |
| 1292 | if (copy_to_user(retports, &tmp, sizeof (*retports))) |
| 1293 | return -EFAULT; |
| 1294 | return 0; |
| 1295 | } |
| 1296 | |
| 1297 | static int reset_rm2(struct r_port *info, void __user *arg) |
| 1298 | { |
| 1299 | int reset; |
| 1300 | |
Alan Cox | 4129a645 | 2008-02-08 04:18:45 -0800 | [diff] [blame] | 1301 | if (!capable(CAP_SYS_ADMIN)) |
| 1302 | return -EPERM; |
| 1303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | if (copy_from_user(&reset, arg, sizeof (int))) |
| 1305 | return -EFAULT; |
| 1306 | if (reset) |
| 1307 | reset = 1; |
| 1308 | |
| 1309 | if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && |
| 1310 | rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) |
| 1311 | return -EINVAL; |
| 1312 | |
| 1313 | if (info->ctlp->BusType == isISA) |
| 1314 | sModemReset(info->ctlp, info->chan, reset); |
| 1315 | else |
| 1316 | sPCIModemReset(info->ctlp, info->chan, reset); |
| 1317 | |
| 1318 | return 0; |
| 1319 | } |
| 1320 | |
| 1321 | static int get_version(struct r_port *info, struct rocket_version __user *retvers) |
| 1322 | { |
| 1323 | if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) |
| 1324 | return -EFAULT; |
| 1325 | return 0; |
| 1326 | } |
| 1327 | |
| 1328 | /* IOCTL call handler into the driver */ |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1329 | static int rp_ioctl(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | unsigned int cmd, unsigned long arg) |
| 1331 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1332 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | void __user *argp = (void __user *)arg; |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1334 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
| 1336 | if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) |
| 1337 | return -ENXIO; |
| 1338 | |
| 1339 | switch (cmd) { |
| 1340 | case RCKP_GET_STRUCT: |
| 1341 | if (copy_to_user(argp, info, sizeof (struct r_port))) |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1342 | ret = -EFAULT; |
| 1343 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | case RCKP_GET_CONFIG: |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1345 | ret = get_config(info, argp); |
| 1346 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | case RCKP_SET_CONFIG: |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1348 | ret = set_config(tty, info, argp); |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1349 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | case RCKP_GET_PORTS: |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1351 | ret = get_ports(info, argp); |
| 1352 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | case RCKP_RESET_RM2: |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1354 | ret = reset_rm2(info, argp); |
| 1355 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | case RCKP_GET_VERSION: |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1357 | ret = get_version(info, argp); |
| 1358 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | default: |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1360 | ret = -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | } |
Alan Cox | bdf183a | 2008-04-30 00:53:21 -0700 | [diff] [blame] | 1362 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | } |
| 1364 | |
| 1365 | static void rp_send_xchar(struct tty_struct *tty, char ch) |
| 1366 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1367 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | CHANNEL_t *cp; |
| 1369 | |
| 1370 | if (rocket_paranoia_check(info, "rp_send_xchar")) |
| 1371 | return; |
| 1372 | |
| 1373 | cp = &info->channel; |
| 1374 | if (sGetTxCnt(cp)) |
| 1375 | sWriteTxPrioByte(cp, ch); |
| 1376 | else |
| 1377 | sWriteTxByte(sGetTxRxDataIO(cp), ch); |
| 1378 | } |
| 1379 | |
| 1380 | static void rp_throttle(struct tty_struct *tty) |
| 1381 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1382 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | |
| 1384 | #ifdef ROCKET_DEBUG_THROTTLE |
| 1385 | printk(KERN_INFO "throttle %s: %d....\n", tty->name, |
| 1386 | tty->ldisc.chars_in_buffer(tty)); |
| 1387 | #endif |
| 1388 | |
| 1389 | if (rocket_paranoia_check(info, "rp_throttle")) |
| 1390 | return; |
| 1391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | if (I_IXOFF(tty)) |
| 1393 | rp_send_xchar(tty, STOP_CHAR(tty)); |
| 1394 | |
| 1395 | sClrRTS(&info->channel); |
| 1396 | } |
| 1397 | |
| 1398 | static void rp_unthrottle(struct tty_struct *tty) |
| 1399 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1400 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | #ifdef ROCKET_DEBUG_THROTTLE |
| 1402 | printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, |
| 1403 | tty->ldisc.chars_in_buffer(tty)); |
| 1404 | #endif |
| 1405 | |
| 1406 | if (rocket_paranoia_check(info, "rp_throttle")) |
| 1407 | return; |
| 1408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | if (I_IXOFF(tty)) |
| 1410 | rp_send_xchar(tty, START_CHAR(tty)); |
| 1411 | |
| 1412 | sSetRTS(&info->channel); |
| 1413 | } |
| 1414 | |
| 1415 | /* |
| 1416 | * ------------------------------------------------------------ |
| 1417 | * rp_stop() and rp_start() |
| 1418 | * |
| 1419 | * This routines are called before setting or resetting tty->stopped. |
| 1420 | * They enable or disable transmitter interrupts, as necessary. |
| 1421 | * ------------------------------------------------------------ |
| 1422 | */ |
| 1423 | static void rp_stop(struct tty_struct *tty) |
| 1424 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1425 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | |
| 1427 | #ifdef ROCKET_DEBUG_FLOW |
| 1428 | printk(KERN_INFO "stop %s: %d %d....\n", tty->name, |
| 1429 | info->xmit_cnt, info->xmit_fifo_room); |
| 1430 | #endif |
| 1431 | |
| 1432 | if (rocket_paranoia_check(info, "rp_stop")) |
| 1433 | return; |
| 1434 | |
| 1435 | if (sGetTxCnt(&info->channel)) |
| 1436 | sDisTransmit(&info->channel); |
| 1437 | } |
| 1438 | |
| 1439 | static void rp_start(struct tty_struct *tty) |
| 1440 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1441 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | |
| 1443 | #ifdef ROCKET_DEBUG_FLOW |
| 1444 | printk(KERN_INFO "start %s: %d %d....\n", tty->name, |
| 1445 | info->xmit_cnt, info->xmit_fifo_room); |
| 1446 | #endif |
| 1447 | |
| 1448 | if (rocket_paranoia_check(info, "rp_stop")) |
| 1449 | return; |
| 1450 | |
| 1451 | sEnTransmit(&info->channel); |
| 1452 | set_bit((info->aiop * 8) + info->chan, |
| 1453 | (void *) &xmit_flags[info->board]); |
| 1454 | } |
| 1455 | |
| 1456 | /* |
| 1457 | * rp_wait_until_sent() --- wait until the transmitter is empty |
| 1458 | */ |
| 1459 | static void rp_wait_until_sent(struct tty_struct *tty, int timeout) |
| 1460 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1461 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | CHANNEL_t *cp; |
| 1463 | unsigned long orig_jiffies; |
| 1464 | int check_time, exit_time; |
| 1465 | int txcnt; |
| 1466 | |
| 1467 | if (rocket_paranoia_check(info, "rp_wait_until_sent")) |
| 1468 | return; |
| 1469 | |
| 1470 | cp = &info->channel; |
| 1471 | |
| 1472 | orig_jiffies = jiffies; |
| 1473 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1474 | printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | jiffies); |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1476 | printk(KERN_INFO "cps=%d...\n", info->cps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | #endif |
| 1478 | while (1) { |
| 1479 | txcnt = sGetTxCnt(cp); |
| 1480 | if (!txcnt) { |
| 1481 | if (sGetChanStatusLo(cp) & TXSHRMT) |
| 1482 | break; |
| 1483 | check_time = (HZ / info->cps) / 5; |
| 1484 | } else { |
| 1485 | check_time = HZ * txcnt / info->cps; |
| 1486 | } |
| 1487 | if (timeout) { |
| 1488 | exit_time = orig_jiffies + timeout - jiffies; |
| 1489 | if (exit_time <= 0) |
| 1490 | break; |
| 1491 | if (exit_time < check_time) |
| 1492 | check_time = exit_time; |
| 1493 | } |
| 1494 | if (check_time == 0) |
| 1495 | check_time = 1; |
| 1496 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1497 | printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt, |
| 1498 | jiffies, check_time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | #endif |
| 1500 | msleep_interruptible(jiffies_to_msecs(check_time)); |
| 1501 | if (signal_pending(current)) |
| 1502 | break; |
| 1503 | } |
Milind Arun Choudhary | cc0a8fb | 2007-05-08 00:30:52 -0700 | [diff] [blame] | 1504 | __set_current_state(TASK_RUNNING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| 1506 | printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); |
| 1507 | #endif |
| 1508 | } |
| 1509 | |
| 1510 | /* |
| 1511 | * rp_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 1512 | */ |
| 1513 | static void rp_hangup(struct tty_struct *tty) |
| 1514 | { |
| 1515 | CHANNEL_t *cp; |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1516 | struct r_port *info = tty->driver_data; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1517 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | |
| 1519 | if (rocket_paranoia_check(info, "rp_hangup")) |
| 1520 | return; |
| 1521 | |
| 1522 | #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1523 | printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | #endif |
| 1525 | rp_flush_buffer(tty); |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1526 | spin_lock_irqsave(&info->port.lock, flags); |
| 1527 | if (info->port.flags & ASYNC_CLOSING) { |
| 1528 | spin_unlock_irqrestore(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | return; |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1530 | } |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 1531 | if (info->port.count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | atomic_dec(&rp_num_ports_open); |
| 1533 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1534 | spin_unlock_irqrestore(&info->port.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | |
Alan Cox | fba85e0 | 2009-01-02 13:48:39 +0000 | [diff] [blame] | 1536 | tty_port_hangup(&info->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | |
| 1538 | cp = &info->channel; |
| 1539 | sDisRxFIFO(cp); |
| 1540 | sDisTransmit(cp); |
| 1541 | sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| 1542 | sDisCTSFlowCtl(cp); |
| 1543 | sDisTxSoftFlowCtl(cp); |
| 1544 | sClrTxXOFF(cp); |
Alan Cox | 417b6e0 | 2010-06-01 22:52:45 +0200 | [diff] [blame] | 1545 | clear_bit(ASYNCB_INITIALIZED, &info->port.flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Alan Cox | e60a108 | 2008-07-16 21:56:18 +0100 | [diff] [blame] | 1547 | wake_up_interruptible(&info->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | } |
| 1549 | |
| 1550 | /* |
| 1551 | * Exception handler - write char routine. The RocketPort driver uses a |
| 1552 | * double-buffering strategy, with the twist that if the in-memory CPU |
| 1553 | * buffer is empty, and there's space in the transmit FIFO, the |
| 1554 | * writing routines will write directly to transmit FIFO. |
| 1555 | * Write buffer and counters protected by spinlocks |
| 1556 | */ |
Alan Cox | bbbbb96 | 2008-04-30 00:54:05 -0700 | [diff] [blame] | 1557 | static int rp_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1559 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | CHANNEL_t *cp; |
| 1561 | unsigned long flags; |
| 1562 | |
| 1563 | if (rocket_paranoia_check(info, "rp_put_char")) |
Alan Cox | bbbbb96 | 2008-04-30 00:54:05 -0700 | [diff] [blame] | 1564 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 1566 | /* |
| 1567 | * Grab the port write mutex, locking out other processes that try to |
| 1568 | * write to this port |
| 1569 | */ |
| 1570 | mutex_lock(&info->write_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | |
| 1572 | #ifdef ROCKET_DEBUG_WRITE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1573 | printk(KERN_INFO "rp_put_char %c...\n", ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | #endif |
| 1575 | |
| 1576 | spin_lock_irqsave(&info->slock, flags); |
| 1577 | cp = &info->channel; |
| 1578 | |
| 1579 | if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) |
| 1580 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| 1581 | |
| 1582 | if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { |
| 1583 | info->xmit_buf[info->xmit_head++] = ch; |
| 1584 | info->xmit_head &= XMIT_BUF_SIZE - 1; |
| 1585 | info->xmit_cnt++; |
| 1586 | set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 1587 | } else { |
| 1588 | sOutB(sGetTxRxDataIO(cp), ch); |
| 1589 | info->xmit_fifo_room--; |
| 1590 | } |
| 1591 | spin_unlock_irqrestore(&info->slock, flags); |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 1592 | mutex_unlock(&info->write_mtx); |
Alan Cox | bbbbb96 | 2008-04-30 00:54:05 -0700 | [diff] [blame] | 1593 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | } |
| 1595 | |
| 1596 | /* |
| 1597 | * Exception handler - write routine, called when user app writes to the device. |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 1598 | * A per port write mutex is used to protect from another process writing to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | * this port at the same time. This other process could be running on the other CPU |
| 1600 | * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). |
| 1601 | * Spinlocks protect the info xmit members. |
| 1602 | */ |
| 1603 | static int rp_write(struct tty_struct *tty, |
| 1604 | const unsigned char *buf, int count) |
| 1605 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1606 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | CHANNEL_t *cp; |
| 1608 | const unsigned char *b; |
| 1609 | int c, retval = 0; |
| 1610 | unsigned long flags; |
| 1611 | |
| 1612 | if (count <= 0 || rocket_paranoia_check(info, "rp_write")) |
| 1613 | return 0; |
| 1614 | |
Satyam Sharma | 1e3e8d9 | 2007-07-15 23:40:07 -0700 | [diff] [blame] | 1615 | if (mutex_lock_interruptible(&info->write_mtx)) |
| 1616 | return -ERESTARTSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | |
| 1618 | #ifdef ROCKET_DEBUG_WRITE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1619 | printk(KERN_INFO "rp_write %d chars...\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | #endif |
| 1621 | cp = &info->channel; |
| 1622 | |
| 1623 | if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) |
| 1624 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| 1625 | |
| 1626 | /* |
| 1627 | * If the write queue for the port is empty, and there is FIFO space, stuff bytes |
| 1628 | * into FIFO. Use the write queue for temp storage. |
| 1629 | */ |
| 1630 | if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { |
| 1631 | c = min(count, info->xmit_fifo_room); |
| 1632 | b = buf; |
| 1633 | |
| 1634 | /* Push data into FIFO, 2 bytes at a time */ |
| 1635 | sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); |
| 1636 | |
| 1637 | /* If there is a byte remaining, write it */ |
| 1638 | if (c & 1) |
| 1639 | sOutB(sGetTxRxDataIO(cp), b[c - 1]); |
| 1640 | |
| 1641 | retval += c; |
| 1642 | buf += c; |
| 1643 | count -= c; |
| 1644 | |
| 1645 | spin_lock_irqsave(&info->slock, flags); |
| 1646 | info->xmit_fifo_room -= c; |
| 1647 | spin_unlock_irqrestore(&info->slock, flags); |
| 1648 | } |
| 1649 | |
| 1650 | /* If count is zero, we wrote it all and are done */ |
| 1651 | if (!count) |
| 1652 | goto end; |
| 1653 | |
| 1654 | /* Write remaining data into the port's xmit_buf */ |
| 1655 | while (1) { |
Alan Cox | 47b01b3 | 2009-01-02 13:48:30 +0000 | [diff] [blame] | 1656 | /* Hung up ? */ |
Jiri Slaby | a391ad0 | 2009-06-11 12:40:17 +0100 | [diff] [blame] | 1657 | if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | goto end; |
Harvey Harrison | 709107f | 2008-04-30 00:53:51 -0700 | [diff] [blame] | 1659 | c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1); |
| 1660 | c = min(c, XMIT_BUF_SIZE - info->xmit_head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | if (c <= 0) |
| 1662 | break; |
| 1663 | |
| 1664 | b = buf; |
| 1665 | memcpy(info->xmit_buf + info->xmit_head, b, c); |
| 1666 | |
| 1667 | spin_lock_irqsave(&info->slock, flags); |
| 1668 | info->xmit_head = |
| 1669 | (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); |
| 1670 | info->xmit_cnt += c; |
| 1671 | spin_unlock_irqrestore(&info->slock, flags); |
| 1672 | |
| 1673 | buf += c; |
| 1674 | count -= c; |
| 1675 | retval += c; |
| 1676 | } |
| 1677 | |
| 1678 | if ((retval > 0) && !tty->stopped && !tty->hw_stopped) |
| 1679 | set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| 1680 | |
| 1681 | end: |
| 1682 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 1683 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| 1685 | wake_up_interruptible(&tty->poll_wait); |
| 1686 | #endif |
| 1687 | } |
Matthias Kaehlcke | 69f545e | 2007-05-08 00:32:00 -0700 | [diff] [blame] | 1688 | mutex_unlock(&info->write_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | return retval; |
| 1690 | } |
| 1691 | |
| 1692 | /* |
| 1693 | * Return the number of characters that can be sent. We estimate |
| 1694 | * only using the in-memory transmit buffer only, and ignore the |
| 1695 | * potential space in the transmit FIFO. |
| 1696 | */ |
| 1697 | static int rp_write_room(struct tty_struct *tty) |
| 1698 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1699 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | int ret; |
| 1701 | |
| 1702 | if (rocket_paranoia_check(info, "rp_write_room")) |
| 1703 | return 0; |
| 1704 | |
| 1705 | ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; |
| 1706 | if (ret < 0) |
| 1707 | ret = 0; |
| 1708 | #ifdef ROCKET_DEBUG_WRITE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1709 | printk(KERN_INFO "rp_write_room returns %d...\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | #endif |
| 1711 | return ret; |
| 1712 | } |
| 1713 | |
| 1714 | /* |
| 1715 | * Return the number of characters in the buffer. Again, this only |
| 1716 | * counts those characters in the in-memory transmit buffer. |
| 1717 | */ |
| 1718 | static int rp_chars_in_buffer(struct tty_struct *tty) |
| 1719 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1720 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | |
| 1722 | if (rocket_paranoia_check(info, "rp_chars_in_buffer")) |
| 1723 | return 0; |
| 1724 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | #ifdef ROCKET_DEBUG_WRITE |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 1726 | printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | #endif |
| 1728 | return info->xmit_cnt; |
| 1729 | } |
| 1730 | |
| 1731 | /* |
| 1732 | * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the |
| 1733 | * r_port struct for the port. Note that spinlock are used to protect info members, |
| 1734 | * do not call this function if the spinlock is already held. |
| 1735 | */ |
| 1736 | static void rp_flush_buffer(struct tty_struct *tty) |
| 1737 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 1738 | struct r_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | CHANNEL_t *cp; |
| 1740 | unsigned long flags; |
| 1741 | |
| 1742 | if (rocket_paranoia_check(info, "rp_flush_buffer")) |
| 1743 | return; |
| 1744 | |
| 1745 | spin_lock_irqsave(&info->slock, flags); |
| 1746 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1747 | spin_unlock_irqrestore(&info->slock, flags); |
| 1748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| 1750 | wake_up_interruptible(&tty->poll_wait); |
| 1751 | #endif |
| 1752 | tty_wakeup(tty); |
| 1753 | |
| 1754 | cp = &info->channel; |
| 1755 | sFlushTxFIFO(cp); |
| 1756 | } |
| 1757 | |
| 1758 | #ifdef CONFIG_PCI |
| 1759 | |
Namhyung Kim | 6835a20 | 2010-12-07 23:27:41 +0900 | [diff] [blame] | 1760 | static struct pci_device_id __devinitdata __used rocket_pci_ids[] = { |
Jiri Slaby | 8d5916d | 2007-05-08 00:27:05 -0700 | [diff] [blame] | 1761 | { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) }, |
| 1762 | { } |
| 1763 | }; |
| 1764 | MODULE_DEVICE_TABLE(pci, rocket_pci_ids); |
| 1765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | /* |
| 1767 | * Called when a PCI card is found. Retrieves and stores model information, |
| 1768 | * init's aiopic and serial port hardware. |
| 1769 | * Inputs: i is the board number (0-n) |
| 1770 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 1771 | static __init int register_PCI(int i, struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | { |
| 1773 | int num_aiops, aiop, max_num_aiops, num_chan, chan; |
| 1774 | unsigned int aiopio[MAX_AIOPS_PER_BOARD]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | CONTROLLER_t *ctlp; |
| 1776 | |
| 1777 | int fast_clock = 0; |
| 1778 | int altChanRingIndicator = 0; |
| 1779 | int ports_per_aiop = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | WordIO_t ConfigIO = 0; |
| 1781 | ByteIO_t UPCIRingInd = 0; |
| 1782 | |
| 1783 | if (!dev || pci_enable_device(dev)) |
| 1784 | return 0; |
| 1785 | |
| 1786 | rcktpt_io_addr[i] = pci_resource_start(dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | |
| 1788 | rcktpt_type[i] = ROCKET_TYPE_NORMAL; |
| 1789 | rocketModel[i].loadrm2 = 0; |
| 1790 | rocketModel[i].startingPortNumber = nextLineNumber; |
| 1791 | |
| 1792 | /* Depending on the model, set up some config variables */ |
| 1793 | switch (dev->device) { |
| 1794 | case PCI_DEVICE_ID_RP4QUAD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | max_num_aiops = 1; |
| 1796 | ports_per_aiop = 4; |
| 1797 | rocketModel[i].model = MODEL_RP4QUAD; |
| 1798 | strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); |
| 1799 | rocketModel[i].numPorts = 4; |
| 1800 | break; |
| 1801 | case PCI_DEVICE_ID_RP8OCTA: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | max_num_aiops = 1; |
| 1803 | rocketModel[i].model = MODEL_RP8OCTA; |
| 1804 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); |
| 1805 | rocketModel[i].numPorts = 8; |
| 1806 | break; |
| 1807 | case PCI_DEVICE_ID_URP8OCTA: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | max_num_aiops = 1; |
| 1809 | rocketModel[i].model = MODEL_UPCI_RP8OCTA; |
| 1810 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); |
| 1811 | rocketModel[i].numPorts = 8; |
| 1812 | break; |
| 1813 | case PCI_DEVICE_ID_RP8INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | max_num_aiops = 1; |
| 1815 | rocketModel[i].model = MODEL_RP8INTF; |
| 1816 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); |
| 1817 | rocketModel[i].numPorts = 8; |
| 1818 | break; |
| 1819 | case PCI_DEVICE_ID_URP8INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | max_num_aiops = 1; |
| 1821 | rocketModel[i].model = MODEL_UPCI_RP8INTF; |
| 1822 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); |
| 1823 | rocketModel[i].numPorts = 8; |
| 1824 | break; |
| 1825 | case PCI_DEVICE_ID_RP8J: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | max_num_aiops = 1; |
| 1827 | rocketModel[i].model = MODEL_RP8J; |
| 1828 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); |
| 1829 | rocketModel[i].numPorts = 8; |
| 1830 | break; |
| 1831 | case PCI_DEVICE_ID_RP4J: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | max_num_aiops = 1; |
| 1833 | ports_per_aiop = 4; |
| 1834 | rocketModel[i].model = MODEL_RP4J; |
| 1835 | strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); |
| 1836 | rocketModel[i].numPorts = 4; |
| 1837 | break; |
| 1838 | case PCI_DEVICE_ID_RP8SNI: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | max_num_aiops = 1; |
| 1840 | rocketModel[i].model = MODEL_RP8SNI; |
| 1841 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); |
| 1842 | rocketModel[i].numPorts = 8; |
| 1843 | break; |
| 1844 | case PCI_DEVICE_ID_RP16SNI: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | max_num_aiops = 2; |
| 1846 | rocketModel[i].model = MODEL_RP16SNI; |
| 1847 | strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); |
| 1848 | rocketModel[i].numPorts = 16; |
| 1849 | break; |
| 1850 | case PCI_DEVICE_ID_RP16INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | max_num_aiops = 2; |
| 1852 | rocketModel[i].model = MODEL_RP16INTF; |
| 1853 | strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); |
| 1854 | rocketModel[i].numPorts = 16; |
| 1855 | break; |
| 1856 | case PCI_DEVICE_ID_URP16INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | max_num_aiops = 2; |
| 1858 | rocketModel[i].model = MODEL_UPCI_RP16INTF; |
| 1859 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); |
| 1860 | rocketModel[i].numPorts = 16; |
| 1861 | break; |
| 1862 | case PCI_DEVICE_ID_CRP16INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | max_num_aiops = 2; |
| 1864 | rocketModel[i].model = MODEL_CPCI_RP16INTF; |
| 1865 | strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); |
| 1866 | rocketModel[i].numPorts = 16; |
| 1867 | break; |
| 1868 | case PCI_DEVICE_ID_RP32INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | max_num_aiops = 4; |
| 1870 | rocketModel[i].model = MODEL_RP32INTF; |
| 1871 | strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); |
| 1872 | rocketModel[i].numPorts = 32; |
| 1873 | break; |
| 1874 | case PCI_DEVICE_ID_URP32INTF: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | max_num_aiops = 4; |
| 1876 | rocketModel[i].model = MODEL_UPCI_RP32INTF; |
| 1877 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); |
| 1878 | rocketModel[i].numPorts = 32; |
| 1879 | break; |
| 1880 | case PCI_DEVICE_ID_RPP4: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | max_num_aiops = 1; |
| 1882 | ports_per_aiop = 4; |
| 1883 | altChanRingIndicator++; |
| 1884 | fast_clock++; |
| 1885 | rocketModel[i].model = MODEL_RPP4; |
| 1886 | strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); |
| 1887 | rocketModel[i].numPorts = 4; |
| 1888 | break; |
| 1889 | case PCI_DEVICE_ID_RPP8: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | max_num_aiops = 2; |
| 1891 | ports_per_aiop = 4; |
| 1892 | altChanRingIndicator++; |
| 1893 | fast_clock++; |
| 1894 | rocketModel[i].model = MODEL_RPP8; |
| 1895 | strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); |
| 1896 | rocketModel[i].numPorts = 8; |
| 1897 | break; |
| 1898 | case PCI_DEVICE_ID_RP2_232: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | max_num_aiops = 1; |
| 1900 | ports_per_aiop = 2; |
| 1901 | altChanRingIndicator++; |
| 1902 | fast_clock++; |
| 1903 | rocketModel[i].model = MODEL_RP2_232; |
| 1904 | strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); |
| 1905 | rocketModel[i].numPorts = 2; |
| 1906 | break; |
| 1907 | case PCI_DEVICE_ID_RP2_422: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | max_num_aiops = 1; |
| 1909 | ports_per_aiop = 2; |
| 1910 | altChanRingIndicator++; |
| 1911 | fast_clock++; |
| 1912 | rocketModel[i].model = MODEL_RP2_422; |
| 1913 | strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); |
| 1914 | rocketModel[i].numPorts = 2; |
| 1915 | break; |
| 1916 | case PCI_DEVICE_ID_RP6M: |
| 1917 | |
| 1918 | max_num_aiops = 1; |
| 1919 | ports_per_aiop = 6; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | |
Jiri Slaby | 57fedc7 | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 1921 | /* If revision is 1, the rocketmodem flash must be loaded. |
| 1922 | * If it is 2 it is a "socketed" version. */ |
| 1923 | if (dev->revision == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
| 1925 | rocketModel[i].loadrm2 = 1; |
| 1926 | } else { |
| 1927 | rcktpt_type[i] = ROCKET_TYPE_MODEM; |
| 1928 | } |
| 1929 | |
| 1930 | rocketModel[i].model = MODEL_RP6M; |
| 1931 | strcpy(rocketModel[i].modelString, "RocketModem 6 port"); |
| 1932 | rocketModel[i].numPorts = 6; |
| 1933 | break; |
| 1934 | case PCI_DEVICE_ID_RP4M: |
| 1935 | max_num_aiops = 1; |
| 1936 | ports_per_aiop = 4; |
Jiri Slaby | 57fedc7 | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 1937 | if (dev->revision == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
| 1939 | rocketModel[i].loadrm2 = 1; |
| 1940 | } else { |
| 1941 | rcktpt_type[i] = ROCKET_TYPE_MODEM; |
| 1942 | } |
| 1943 | |
| 1944 | rocketModel[i].model = MODEL_RP4M; |
| 1945 | strcpy(rocketModel[i].modelString, "RocketModem 4 port"); |
| 1946 | rocketModel[i].numPorts = 4; |
| 1947 | break; |
| 1948 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | max_num_aiops = 0; |
| 1950 | break; |
| 1951 | } |
| 1952 | |
| 1953 | /* |
| 1954 | * Check for UPCI boards. |
| 1955 | */ |
| 1956 | |
| 1957 | switch (dev->device) { |
| 1958 | case PCI_DEVICE_ID_URP32INTF: |
| 1959 | case PCI_DEVICE_ID_URP8INTF: |
| 1960 | case PCI_DEVICE_ID_URP16INTF: |
| 1961 | case PCI_DEVICE_ID_CRP16INTF: |
| 1962 | case PCI_DEVICE_ID_URP8OCTA: |
| 1963 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| 1964 | ConfigIO = pci_resource_start(dev, 1); |
| 1965 | if (dev->device == PCI_DEVICE_ID_URP8OCTA) { |
| 1966 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| 1967 | |
| 1968 | /* |
| 1969 | * Check for octa or quad cable. |
| 1970 | */ |
| 1971 | if (! |
| 1972 | (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & |
| 1973 | PCI_GPIO_CTRL_8PORT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | ports_per_aiop = 4; |
| 1975 | rocketModel[i].numPorts = 4; |
| 1976 | } |
| 1977 | } |
| 1978 | break; |
| 1979 | case PCI_DEVICE_ID_UPCI_RM3_8PORT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | max_num_aiops = 1; |
| 1981 | rocketModel[i].model = MODEL_UPCI_RM3_8PORT; |
| 1982 | strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); |
| 1983 | rocketModel[i].numPorts = 8; |
| 1984 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| 1985 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| 1986 | ConfigIO = pci_resource_start(dev, 1); |
| 1987 | rcktpt_type[i] = ROCKET_TYPE_MODEMIII; |
| 1988 | break; |
| 1989 | case PCI_DEVICE_ID_UPCI_RM3_4PORT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | max_num_aiops = 1; |
| 1991 | rocketModel[i].model = MODEL_UPCI_RM3_4PORT; |
| 1992 | strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); |
| 1993 | rocketModel[i].numPorts = 4; |
| 1994 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| 1995 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| 1996 | ConfigIO = pci_resource_start(dev, 1); |
| 1997 | rcktpt_type[i] = ROCKET_TYPE_MODEMIII; |
| 1998 | break; |
| 1999 | default: |
| 2000 | break; |
| 2001 | } |
| 2002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | if (fast_clock) { |
| 2004 | sClockPrescale = 0x12; /* mod 2 (divide by 3) */ |
| 2005 | rp_baud_base[i] = 921600; |
| 2006 | } else { |
| 2007 | /* |
| 2008 | * If support_low_speed is set, use the slow clock |
| 2009 | * prescale, which supports 50 bps |
| 2010 | */ |
| 2011 | if (support_low_speed) { |
| 2012 | /* mod 9 (divide by 10) prescale */ |
| 2013 | sClockPrescale = 0x19; |
| 2014 | rp_baud_base[i] = 230400; |
| 2015 | } else { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2016 | /* mod 4 (divide by 5) prescale */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | sClockPrescale = 0x14; |
| 2018 | rp_baud_base[i] = 460800; |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | for (aiop = 0; aiop < max_num_aiops; aiop++) |
| 2023 | aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); |
| 2024 | ctlp = sCtlNumToCtlPtr(i); |
| 2025 | num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); |
| 2026 | for (aiop = 0; aiop < max_num_aiops; aiop++) |
| 2027 | ctlp->AiopNumChan[aiop] = ports_per_aiop; |
| 2028 | |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 2029 | dev_info(&dev->dev, "comtrol PCI controller #%d found at " |
| 2030 | "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n", |
| 2031 | i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString, |
| 2032 | rocketModel[i].startingPortNumber, |
| 2033 | rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | |
| 2035 | if (num_aiops <= 0) { |
| 2036 | rcktpt_io_addr[i] = 0; |
| 2037 | return (0); |
| 2038 | } |
| 2039 | is_PCI[i] = 1; |
| 2040 | |
| 2041 | /* Reset the AIOPIC, init the serial ports */ |
| 2042 | for (aiop = 0; aiop < num_aiops; aiop++) { |
| 2043 | sResetAiopByNum(ctlp, aiop); |
| 2044 | num_chan = ports_per_aiop; |
| 2045 | for (chan = 0; chan < num_chan; chan++) |
| 2046 | init_r_port(i, aiop, chan, dev); |
| 2047 | } |
| 2048 | |
| 2049 | /* Rocket modems must be reset */ |
| 2050 | if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || |
| 2051 | (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || |
| 2052 | (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { |
| 2053 | num_chan = ports_per_aiop; |
| 2054 | for (chan = 0; chan < num_chan; chan++) |
| 2055 | sPCIModemReset(ctlp, chan, 1); |
Jiri Slaby | 48a67f5 | 2008-02-07 00:16:32 -0800 | [diff] [blame] | 2056 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2057 | for (chan = 0; chan < num_chan; chan++) |
| 2058 | sPCIModemReset(ctlp, chan, 0); |
Jiri Slaby | 48a67f5 | 2008-02-07 00:16:32 -0800 | [diff] [blame] | 2059 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | rmSpeakerReset(ctlp, rocketModel[i].model); |
| 2061 | } |
| 2062 | return (1); |
| 2063 | } |
| 2064 | |
| 2065 | /* |
| 2066 | * Probes for PCI cards, inits them if found |
| 2067 | * Input: board_found = number of ISA boards already found, or the |
| 2068 | * starting board number |
| 2069 | * Returns: Number of PCI boards found |
| 2070 | */ |
| 2071 | static int __init init_PCI(int boards_found) |
| 2072 | { |
| 2073 | struct pci_dev *dev = NULL; |
| 2074 | int count = 0; |
| 2075 | |
| 2076 | /* Work through the PCI device list, pulling out ours */ |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 2077 | while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | if (register_PCI(count + boards_found, dev)) |
| 2079 | count++; |
| 2080 | } |
| 2081 | return (count); |
| 2082 | } |
| 2083 | |
| 2084 | #endif /* CONFIG_PCI */ |
| 2085 | |
| 2086 | /* |
| 2087 | * Probes for ISA cards |
| 2088 | * Input: i = the board number to look for |
| 2089 | * Returns: 1 if board found, 0 else |
| 2090 | */ |
| 2091 | static int __init init_ISA(int i) |
| 2092 | { |
| 2093 | int num_aiops, num_chan = 0, total_num_chan = 0; |
| 2094 | int aiop, chan; |
| 2095 | unsigned int aiopio[MAX_AIOPS_PER_BOARD]; |
| 2096 | CONTROLLER_t *ctlp; |
| 2097 | char *type_string; |
| 2098 | |
| 2099 | /* If io_addr is zero, no board configured */ |
| 2100 | if (rcktpt_io_addr[i] == 0) |
| 2101 | return (0); |
| 2102 | |
| 2103 | /* Reserve the IO region */ |
| 2104 | if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 2105 | printk(KERN_ERR "Unable to reserve IO region for configured " |
| 2106 | "ISA RocketPort at address 0x%lx, board not " |
| 2107 | "installed...\n", rcktpt_io_addr[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | rcktpt_io_addr[i] = 0; |
| 2109 | return (0); |
| 2110 | } |
| 2111 | |
| 2112 | ctlp = sCtlNumToCtlPtr(i); |
| 2113 | |
| 2114 | ctlp->boardType = rcktpt_type[i]; |
| 2115 | |
| 2116 | switch (rcktpt_type[i]) { |
| 2117 | case ROCKET_TYPE_PC104: |
| 2118 | type_string = "(PC104)"; |
| 2119 | break; |
| 2120 | case ROCKET_TYPE_MODEM: |
| 2121 | type_string = "(RocketModem)"; |
| 2122 | break; |
| 2123 | case ROCKET_TYPE_MODEMII: |
| 2124 | type_string = "(RocketModem II)"; |
| 2125 | break; |
| 2126 | default: |
| 2127 | type_string = ""; |
| 2128 | break; |
| 2129 | } |
| 2130 | |
| 2131 | /* |
| 2132 | * If support_low_speed is set, use the slow clock prescale, |
| 2133 | * which supports 50 bps |
| 2134 | */ |
| 2135 | if (support_low_speed) { |
| 2136 | sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ |
| 2137 | rp_baud_base[i] = 230400; |
| 2138 | } else { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2139 | sClockPrescale = 0x14; /* mod 4 (divide by 5) prescale */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | rp_baud_base[i] = 460800; |
| 2141 | } |
| 2142 | |
| 2143 | for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) |
| 2144 | aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); |
| 2145 | |
| 2146 | num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); |
| 2147 | |
| 2148 | if (ctlp->boardType == ROCKET_TYPE_PC104) { |
| 2149 | sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ |
| 2150 | sEnAiop(ctlp, 3); /* CSels used for other stuff */ |
| 2151 | } |
| 2152 | |
| 2153 | /* If something went wrong initing the AIOP's release the ISA IO memory */ |
| 2154 | if (num_aiops <= 0) { |
| 2155 | release_region(rcktpt_io_addr[i], 64); |
| 2156 | rcktpt_io_addr[i] = 0; |
| 2157 | return (0); |
| 2158 | } |
| 2159 | |
| 2160 | rocketModel[i].startingPortNumber = nextLineNumber; |
| 2161 | |
| 2162 | for (aiop = 0; aiop < num_aiops; aiop++) { |
| 2163 | sResetAiopByNum(ctlp, aiop); |
| 2164 | sEnAiop(ctlp, aiop); |
| 2165 | num_chan = sGetAiopNumChan(ctlp, aiop); |
| 2166 | total_num_chan += num_chan; |
| 2167 | for (chan = 0; chan < num_chan; chan++) |
| 2168 | init_r_port(i, aiop, chan, NULL); |
| 2169 | } |
| 2170 | is_PCI[i] = 0; |
| 2171 | if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) { |
| 2172 | num_chan = sGetAiopNumChan(ctlp, 0); |
| 2173 | total_num_chan = num_chan; |
| 2174 | for (chan = 0; chan < num_chan; chan++) |
| 2175 | sModemReset(ctlp, chan, 1); |
Jiri Slaby | 48a67f5 | 2008-02-07 00:16:32 -0800 | [diff] [blame] | 2176 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | for (chan = 0; chan < num_chan; chan++) |
| 2178 | sModemReset(ctlp, chan, 0); |
Jiri Slaby | 48a67f5 | 2008-02-07 00:16:32 -0800 | [diff] [blame] | 2179 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | strcpy(rocketModel[i].modelString, "RocketModem ISA"); |
| 2181 | } else { |
| 2182 | strcpy(rocketModel[i].modelString, "RocketPort ISA"); |
| 2183 | } |
| 2184 | rocketModel[i].numPorts = total_num_chan; |
| 2185 | rocketModel[i].model = MODEL_ISA; |
| 2186 | |
| 2187 | printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n", |
| 2188 | i, rcktpt_io_addr[i], num_aiops, type_string); |
| 2189 | |
| 2190 | printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", |
| 2191 | rocketModel[i].modelString, |
| 2192 | rocketModel[i].startingPortNumber, |
| 2193 | rocketModel[i].startingPortNumber + |
| 2194 | rocketModel[i].numPorts - 1); |
| 2195 | |
| 2196 | return (1); |
| 2197 | } |
| 2198 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 2199 | static const struct tty_operations rocket_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | .open = rp_open, |
| 2201 | .close = rp_close, |
| 2202 | .write = rp_write, |
| 2203 | .put_char = rp_put_char, |
| 2204 | .write_room = rp_write_room, |
| 2205 | .chars_in_buffer = rp_chars_in_buffer, |
| 2206 | .flush_buffer = rp_flush_buffer, |
| 2207 | .ioctl = rp_ioctl, |
| 2208 | .throttle = rp_throttle, |
| 2209 | .unthrottle = rp_unthrottle, |
| 2210 | .set_termios = rp_set_termios, |
| 2211 | .stop = rp_stop, |
| 2212 | .start = rp_start, |
| 2213 | .hangup = rp_hangup, |
| 2214 | .break_ctl = rp_break, |
| 2215 | .send_xchar = rp_send_xchar, |
| 2216 | .wait_until_sent = rp_wait_until_sent, |
| 2217 | .tiocmget = rp_tiocmget, |
| 2218 | .tiocmset = rp_tiocmset, |
| 2219 | }; |
| 2220 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 2221 | static const struct tty_port_operations rocket_port_ops = { |
| 2222 | .carrier_raised = carrier_raised, |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 2223 | .dtr_rts = dtr_rts, |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 2224 | }; |
| 2225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | /* |
| 2227 | * The module "startup" routine; it's run when the module is loaded. |
| 2228 | */ |
Bjorn Helgaas | d269cdd | 2005-10-30 15:03:14 -0800 | [diff] [blame] | 2229 | static int __init rp_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | { |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2231 | int ret = -ENOMEM, pci_boards_found, isa_boards_found, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | |
| 2233 | printk(KERN_INFO "RocketPort device driver module, version %s, %s\n", |
| 2234 | ROCKET_VERSION, ROCKET_DATE); |
| 2235 | |
| 2236 | rocket_driver = alloc_tty_driver(MAX_RP_PORTS); |
| 2237 | if (!rocket_driver) |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2238 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | |
| 2240 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | * If board 1 is non-zero, there is at least one ISA configured. If controller is |
| 2242 | * zero, use the default controller IO address of board1 + 0x40. |
| 2243 | */ |
| 2244 | if (board1) { |
| 2245 | if (controller == 0) |
| 2246 | controller = board1 + 0x40; |
| 2247 | } else { |
| 2248 | controller = 0; /* Used as a flag, meaning no ISA boards */ |
| 2249 | } |
| 2250 | |
| 2251 | /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */ |
| 2252 | if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) { |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2253 | printk(KERN_ERR "Unable to reserve IO region for first " |
| 2254 | "configured ISA RocketPort controller 0x%lx. " |
| 2255 | "Driver exiting\n", controller); |
| 2256 | ret = -EBUSY; |
| 2257 | goto err_tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | } |
| 2259 | |
| 2260 | /* Store ISA variable retrieved from command line or .conf file. */ |
| 2261 | rcktpt_io_addr[0] = board1; |
| 2262 | rcktpt_io_addr[1] = board2; |
| 2263 | rcktpt_io_addr[2] = board3; |
| 2264 | rcktpt_io_addr[3] = board4; |
| 2265 | |
| 2266 | rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| 2267 | rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0]; |
| 2268 | rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| 2269 | rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1]; |
| 2270 | rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| 2271 | rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2]; |
| 2272 | rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| 2273 | rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3]; |
| 2274 | |
| 2275 | /* |
| 2276 | * Set up the tty driver structure and then register this |
| 2277 | * driver with the tty layer. |
| 2278 | */ |
| 2279 | |
| 2280 | rocket_driver->owner = THIS_MODULE; |
Greg Kroah-Hartman | 331b831 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 2281 | rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | rocket_driver->name = "ttyR"; |
| 2283 | rocket_driver->driver_name = "Comtrol RocketPort"; |
| 2284 | rocket_driver->major = TTY_ROCKET_MAJOR; |
| 2285 | rocket_driver->minor_start = 0; |
| 2286 | rocket_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 2287 | rocket_driver->subtype = SERIAL_TYPE_NORMAL; |
| 2288 | rocket_driver->init_termios = tty_std_termios; |
| 2289 | rocket_driver->init_termios.c_cflag = |
| 2290 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 2291 | rocket_driver->init_termios.c_ispeed = 9600; |
| 2292 | rocket_driver->init_termios.c_ospeed = 9600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | #ifdef ROCKET_SOFT_FLOW |
Jiri Slaby | ac6aec2 | 2007-10-18 03:06:26 -0700 | [diff] [blame] | 2294 | rocket_driver->flags |= TTY_DRIVER_REAL_RAW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | #endif |
| 2296 | tty_set_operations(rocket_driver, &rocket_ops); |
| 2297 | |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2298 | ret = tty_register_driver(rocket_driver); |
| 2299 | if (ret < 0) { |
| 2300 | printk(KERN_ERR "Couldn't install tty RocketPort driver\n"); |
Dan Carpenter | 713efa9 | 2010-10-27 15:34:18 -0700 | [diff] [blame] | 2301 | goto err_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | } |
| 2303 | |
| 2304 | #ifdef ROCKET_DEBUG_OPEN |
| 2305 | printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major); |
| 2306 | #endif |
| 2307 | |
| 2308 | /* |
| 2309 | * OK, let's probe each of the controllers looking for boards. Any boards found |
| 2310 | * will be initialized here. |
| 2311 | */ |
| 2312 | isa_boards_found = 0; |
| 2313 | pci_boards_found = 0; |
| 2314 | |
| 2315 | for (i = 0; i < NUM_BOARDS; i++) { |
| 2316 | if (init_ISA(i)) |
| 2317 | isa_boards_found++; |
| 2318 | } |
| 2319 | |
| 2320 | #ifdef CONFIG_PCI |
| 2321 | if (isa_boards_found < NUM_BOARDS) |
| 2322 | pci_boards_found = init_PCI(isa_boards_found); |
| 2323 | #endif |
| 2324 | |
| 2325 | max_board = pci_boards_found + isa_boards_found; |
| 2326 | |
| 2327 | if (max_board == 0) { |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2328 | printk(KERN_ERR "No rocketport ports found; unloading driver\n"); |
| 2329 | ret = -ENXIO; |
| 2330 | goto err_ttyu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | } |
| 2332 | |
| 2333 | return 0; |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2334 | err_ttyu: |
| 2335 | tty_unregister_driver(rocket_driver); |
Dan Carpenter | 713efa9 | 2010-10-27 15:34:18 -0700 | [diff] [blame] | 2336 | err_controller: |
| 2337 | if (controller) |
| 2338 | release_region(controller, 4); |
Jiri Slaby | 4384a3f | 2007-10-18 03:06:28 -0700 | [diff] [blame] | 2339 | err_tty: |
| 2340 | put_tty_driver(rocket_driver); |
| 2341 | err: |
| 2342 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | } |
| 2344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | |
| 2346 | static void rp_cleanup_module(void) |
| 2347 | { |
| 2348 | int retval; |
| 2349 | int i; |
| 2350 | |
| 2351 | del_timer_sync(&rocket_timer); |
| 2352 | |
| 2353 | retval = tty_unregister_driver(rocket_driver); |
| 2354 | if (retval) |
Jiri Slaby | 68562b7 | 2008-02-07 00:16:33 -0800 | [diff] [blame] | 2355 | printk(KERN_ERR "Error %d while trying to unregister " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | "rocketport driver\n", -retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | |
Jesper Juhl | 735d566 | 2005-11-07 01:01:29 -0800 | [diff] [blame] | 2358 | for (i = 0; i < MAX_RP_PORTS; i++) |
Jiri Slaby | ac6aec2 | 2007-10-18 03:06:26 -0700 | [diff] [blame] | 2359 | if (rp_table[i]) { |
| 2360 | tty_unregister_device(rocket_driver, i); |
| 2361 | kfree(rp_table[i]); |
| 2362 | } |
| 2363 | |
| 2364 | put_tty_driver(rocket_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | |
| 2366 | for (i = 0; i < NUM_BOARDS; i++) { |
| 2367 | if (rcktpt_io_addr[i] <= 0 || is_PCI[i]) |
| 2368 | continue; |
| 2369 | release_region(rcktpt_io_addr[i], 64); |
| 2370 | } |
| 2371 | if (controller) |
| 2372 | release_region(controller, 4); |
| 2373 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | /*************************************************************************** |
| 2376 | Function: sInitController |
| 2377 | Purpose: Initialization of controller global registers and controller |
| 2378 | structure. |
| 2379 | Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize, |
| 2380 | IRQNum,Frequency,PeriodicOnly) |
| 2381 | CONTROLLER_T *CtlP; Ptr to controller structure |
| 2382 | int CtlNum; Controller number |
| 2383 | ByteIO_t MudbacIO; Mudbac base I/O address. |
| 2384 | ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. |
| 2385 | This list must be in the order the AIOPs will be found on the |
| 2386 | controller. Once an AIOP in the list is not found, it is |
| 2387 | assumed that there are no more AIOPs on the controller. |
| 2388 | int AiopIOListSize; Number of addresses in AiopIOList |
| 2389 | int IRQNum; Interrupt Request number. Can be any of the following: |
| 2390 | 0: Disable global interrupts |
| 2391 | 3: IRQ 3 |
| 2392 | 4: IRQ 4 |
| 2393 | 5: IRQ 5 |
| 2394 | 9: IRQ 9 |
| 2395 | 10: IRQ 10 |
| 2396 | 11: IRQ 11 |
| 2397 | 12: IRQ 12 |
| 2398 | 15: IRQ 15 |
| 2399 | Byte_t Frequency: A flag identifying the frequency |
| 2400 | of the periodic interrupt, can be any one of the following: |
| 2401 | FREQ_DIS - periodic interrupt disabled |
| 2402 | FREQ_137HZ - 137 Hertz |
| 2403 | FREQ_69HZ - 69 Hertz |
| 2404 | FREQ_34HZ - 34 Hertz |
| 2405 | FREQ_17HZ - 17 Hertz |
| 2406 | FREQ_9HZ - 9 Hertz |
| 2407 | FREQ_4HZ - 4 Hertz |
| 2408 | If IRQNum is set to 0 the Frequency parameter is |
| 2409 | overidden, it is forced to a value of FREQ_DIS. |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2410 | int PeriodicOnly: 1 if all interrupts except the periodic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2411 | interrupt are to be blocked. |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2412 | 0 is both the periodic interrupt and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2413 | other channel interrupts are allowed. |
| 2414 | If IRQNum is set to 0 the PeriodicOnly parameter is |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2415 | overidden, it is forced to a value of 0. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
| 2417 | initialization failed. |
| 2418 | |
| 2419 | Comments: |
| 2420 | If periodic interrupts are to be disabled but AIOP interrupts |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2421 | are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2422 | |
| 2423 | If interrupts are to be completely disabled set IRQNum to 0. |
| 2424 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2425 | Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | invalid combination. |
| 2427 | |
| 2428 | This function performs initialization of global interrupt modes, |
| 2429 | but it does not actually enable global interrupts. To enable |
| 2430 | and disable global interrupts use functions sEnGlobalInt() and |
| 2431 | sDisGlobalInt(). Enabling of global interrupts is normally not |
| 2432 | done until all other initializations are complete. |
| 2433 | |
| 2434 | Even if interrupts are globally enabled, they must also be |
| 2435 | individually enabled for each channel that is to generate |
| 2436 | interrupts. |
| 2437 | |
| 2438 | Warnings: No range checking on any of the parameters is done. |
| 2439 | |
| 2440 | No context switches are allowed while executing this function. |
| 2441 | |
| 2442 | After this function all AIOPs on the controller are disabled, |
| 2443 | they can be enabled with sEnAiop(). |
| 2444 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2445 | static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, |
| 2446 | ByteIO_t * AiopIOList, int AiopIOListSize, |
| 2447 | int IRQNum, Byte_t Frequency, int PeriodicOnly) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | { |
| 2449 | int i; |
| 2450 | ByteIO_t io; |
| 2451 | int done; |
| 2452 | |
| 2453 | CtlP->AiopIntrBits = aiop_intr_bits; |
| 2454 | CtlP->AltChanRingIndicator = 0; |
| 2455 | CtlP->CtlNum = CtlNum; |
| 2456 | CtlP->CtlID = CTLID_0001; /* controller release 1 */ |
| 2457 | CtlP->BusType = isISA; |
| 2458 | CtlP->MBaseIO = MudbacIO; |
| 2459 | CtlP->MReg1IO = MudbacIO + 1; |
| 2460 | CtlP->MReg2IO = MudbacIO + 2; |
| 2461 | CtlP->MReg3IO = MudbacIO + 3; |
| 2462 | #if 1 |
| 2463 | CtlP->MReg2 = 0; /* interrupt disable */ |
| 2464 | CtlP->MReg3 = 0; /* no periodic interrupts */ |
| 2465 | #else |
| 2466 | if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */ |
| 2467 | CtlP->MReg2 = 0; /* interrupt disable */ |
| 2468 | CtlP->MReg3 = 0; /* no periodic interrupts */ |
| 2469 | } else { |
| 2470 | CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */ |
| 2471 | CtlP->MReg3 = Frequency; /* set frequency */ |
| 2472 | if (PeriodicOnly) { /* periodic interrupt only */ |
| 2473 | CtlP->MReg3 |= PERIODIC_ONLY; |
| 2474 | } |
| 2475 | } |
| 2476 | #endif |
| 2477 | sOutB(CtlP->MReg2IO, CtlP->MReg2); |
| 2478 | sOutB(CtlP->MReg3IO, CtlP->MReg3); |
| 2479 | sControllerEOI(CtlP); /* clear EOI if warm init */ |
| 2480 | /* Init AIOPs */ |
| 2481 | CtlP->NumAiop = 0; |
| 2482 | for (i = done = 0; i < AiopIOListSize; i++) { |
| 2483 | io = AiopIOList[i]; |
| 2484 | CtlP->AiopIO[i] = (WordIO_t) io; |
| 2485 | CtlP->AiopIntChanIO[i] = io + _INT_CHAN; |
| 2486 | sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */ |
| 2487 | sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */ |
| 2488 | if (done) |
| 2489 | continue; |
| 2490 | sEnAiop(CtlP, i); /* enable the AIOP */ |
| 2491 | CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ |
| 2492 | if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ |
| 2493 | done = 1; /* done looking for AIOPs */ |
| 2494 | else { |
| 2495 | CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ |
| 2496 | sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ |
| 2497 | sOutB(io + _INDX_DATA, sClockPrescale); |
| 2498 | CtlP->NumAiop++; /* bump count of AIOPs */ |
| 2499 | } |
| 2500 | sDisAiop(CtlP, i); /* disable AIOP */ |
| 2501 | } |
| 2502 | |
| 2503 | if (CtlP->NumAiop == 0) |
| 2504 | return (-1); |
| 2505 | else |
| 2506 | return (CtlP->NumAiop); |
| 2507 | } |
| 2508 | |
| 2509 | /*************************************************************************** |
| 2510 | Function: sPCIInitController |
| 2511 | Purpose: Initialization of controller global registers and controller |
| 2512 | structure. |
| 2513 | Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize, |
| 2514 | IRQNum,Frequency,PeriodicOnly) |
| 2515 | CONTROLLER_T *CtlP; Ptr to controller structure |
| 2516 | int CtlNum; Controller number |
| 2517 | ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. |
| 2518 | This list must be in the order the AIOPs will be found on the |
| 2519 | controller. Once an AIOP in the list is not found, it is |
| 2520 | assumed that there are no more AIOPs on the controller. |
| 2521 | int AiopIOListSize; Number of addresses in AiopIOList |
| 2522 | int IRQNum; Interrupt Request number. Can be any of the following: |
| 2523 | 0: Disable global interrupts |
| 2524 | 3: IRQ 3 |
| 2525 | 4: IRQ 4 |
| 2526 | 5: IRQ 5 |
| 2527 | 9: IRQ 9 |
| 2528 | 10: IRQ 10 |
| 2529 | 11: IRQ 11 |
| 2530 | 12: IRQ 12 |
| 2531 | 15: IRQ 15 |
| 2532 | Byte_t Frequency: A flag identifying the frequency |
| 2533 | of the periodic interrupt, can be any one of the following: |
| 2534 | FREQ_DIS - periodic interrupt disabled |
| 2535 | FREQ_137HZ - 137 Hertz |
| 2536 | FREQ_69HZ - 69 Hertz |
| 2537 | FREQ_34HZ - 34 Hertz |
| 2538 | FREQ_17HZ - 17 Hertz |
| 2539 | FREQ_9HZ - 9 Hertz |
| 2540 | FREQ_4HZ - 4 Hertz |
| 2541 | If IRQNum is set to 0 the Frequency parameter is |
| 2542 | overidden, it is forced to a value of FREQ_DIS. |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2543 | int PeriodicOnly: 1 if all interrupts except the periodic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2544 | interrupt are to be blocked. |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2545 | 0 is both the periodic interrupt and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | other channel interrupts are allowed. |
| 2547 | If IRQNum is set to 0 the PeriodicOnly parameter is |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2548 | overidden, it is forced to a value of 0. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
| 2550 | initialization failed. |
| 2551 | |
| 2552 | Comments: |
| 2553 | If periodic interrupts are to be disabled but AIOP interrupts |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2554 | are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | |
| 2556 | If interrupts are to be completely disabled set IRQNum to 0. |
| 2557 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2558 | Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | invalid combination. |
| 2560 | |
| 2561 | This function performs initialization of global interrupt modes, |
| 2562 | but it does not actually enable global interrupts. To enable |
| 2563 | and disable global interrupts use functions sEnGlobalInt() and |
| 2564 | sDisGlobalInt(). Enabling of global interrupts is normally not |
| 2565 | done until all other initializations are complete. |
| 2566 | |
| 2567 | Even if interrupts are globally enabled, they must also be |
| 2568 | individually enabled for each channel that is to generate |
| 2569 | interrupts. |
| 2570 | |
| 2571 | Warnings: No range checking on any of the parameters is done. |
| 2572 | |
| 2573 | No context switches are allowed while executing this function. |
| 2574 | |
| 2575 | After this function all AIOPs on the controller are disabled, |
| 2576 | they can be enabled with sEnAiop(). |
| 2577 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2578 | static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, |
| 2579 | ByteIO_t * AiopIOList, int AiopIOListSize, |
| 2580 | WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, |
| 2581 | int PeriodicOnly, int altChanRingIndicator, |
| 2582 | int UPCIRingInd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | { |
| 2584 | int i; |
| 2585 | ByteIO_t io; |
| 2586 | |
| 2587 | CtlP->AltChanRingIndicator = altChanRingIndicator; |
| 2588 | CtlP->UPCIRingInd = UPCIRingInd; |
| 2589 | CtlP->CtlNum = CtlNum; |
| 2590 | CtlP->CtlID = CTLID_0001; /* controller release 1 */ |
| 2591 | CtlP->BusType = isPCI; /* controller release 1 */ |
| 2592 | |
| 2593 | if (ConfigIO) { |
| 2594 | CtlP->isUPCI = 1; |
| 2595 | CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL; |
| 2596 | CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL; |
| 2597 | CtlP->AiopIntrBits = upci_aiop_intr_bits; |
| 2598 | } else { |
| 2599 | CtlP->isUPCI = 0; |
| 2600 | CtlP->PCIIO = |
| 2601 | (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC); |
| 2602 | CtlP->AiopIntrBits = aiop_intr_bits; |
| 2603 | } |
| 2604 | |
| 2605 | sPCIControllerEOI(CtlP); /* clear EOI if warm init */ |
| 2606 | /* Init AIOPs */ |
| 2607 | CtlP->NumAiop = 0; |
| 2608 | for (i = 0; i < AiopIOListSize; i++) { |
| 2609 | io = AiopIOList[i]; |
| 2610 | CtlP->AiopIO[i] = (WordIO_t) io; |
| 2611 | CtlP->AiopIntChanIO[i] = io + _INT_CHAN; |
| 2612 | |
| 2613 | CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ |
| 2614 | if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ |
| 2615 | break; /* done looking for AIOPs */ |
| 2616 | |
| 2617 | CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ |
| 2618 | sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ |
| 2619 | sOutB(io + _INDX_DATA, sClockPrescale); |
| 2620 | CtlP->NumAiop++; /* bump count of AIOPs */ |
| 2621 | } |
| 2622 | |
| 2623 | if (CtlP->NumAiop == 0) |
| 2624 | return (-1); |
| 2625 | else |
| 2626 | return (CtlP->NumAiop); |
| 2627 | } |
| 2628 | |
| 2629 | /*************************************************************************** |
| 2630 | Function: sReadAiopID |
| 2631 | Purpose: Read the AIOP idenfication number directly from an AIOP. |
| 2632 | Call: sReadAiopID(io) |
| 2633 | ByteIO_t io: AIOP base I/O address |
| 2634 | Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X |
| 2635 | is replace by an identifying number. |
| 2636 | Flag AIOPID_NULL if no valid AIOP is found |
| 2637 | Warnings: No context switches are allowed while executing this function. |
| 2638 | |
| 2639 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2640 | static int sReadAiopID(ByteIO_t io) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | { |
| 2642 | Byte_t AiopID; /* ID byte from AIOP */ |
| 2643 | |
| 2644 | sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */ |
| 2645 | sOutB(io + _CMD_REG, 0x0); |
| 2646 | AiopID = sInW(io + _CHN_STAT0) & 0x07; |
| 2647 | if (AiopID == 0x06) |
| 2648 | return (1); |
| 2649 | else /* AIOP does not exist */ |
| 2650 | return (-1); |
| 2651 | } |
| 2652 | |
| 2653 | /*************************************************************************** |
| 2654 | Function: sReadAiopNumChan |
| 2655 | Purpose: Read the number of channels available in an AIOP directly from |
| 2656 | an AIOP. |
| 2657 | Call: sReadAiopNumChan(io) |
| 2658 | WordIO_t io: AIOP base I/O address |
| 2659 | Return: int: The number of channels available |
| 2660 | Comments: The number of channels is determined by write/reads from identical |
| 2661 | offsets within the SRAM address spaces for channels 0 and 4. |
| 2662 | If the channel 4 space is mirrored to channel 0 it is a 4 channel |
| 2663 | AIOP, otherwise it is an 8 channel. |
| 2664 | Warnings: No context switches are allowed while executing this function. |
| 2665 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2666 | static int sReadAiopNumChan(WordIO_t io) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | { |
| 2668 | Word_t x; |
| 2669 | static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 }; |
| 2670 | |
| 2671 | /* write to chan 0 SRAM */ |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2672 | out32((DWordIO_t) io + _INDX_ADDR, R); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2673 | sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */ |
| 2674 | x = sInW(io + _INDX_DATA); |
| 2675 | sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */ |
| 2676 | if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */ |
| 2677 | return (8); |
| 2678 | else |
| 2679 | return (4); |
| 2680 | } |
| 2681 | |
| 2682 | /*************************************************************************** |
| 2683 | Function: sInitChan |
| 2684 | Purpose: Initialization of a channel and channel structure |
| 2685 | Call: sInitChan(CtlP,ChP,AiopNum,ChanNum) |
| 2686 | CONTROLLER_T *CtlP; Ptr to controller structure |
| 2687 | CHANNEL_T *ChP; Ptr to channel structure |
| 2688 | int AiopNum; AIOP number within controller |
| 2689 | int ChanNum; Channel number within AIOP |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2690 | Return: int: 1 if initialization succeeded, 0 if it fails because channel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2691 | number exceeds number of channels available in AIOP. |
| 2692 | Comments: This function must be called before a channel can be used. |
| 2693 | Warnings: No range checking on any of the parameters is done. |
| 2694 | |
| 2695 | No context switches are allowed while executing this function. |
| 2696 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2697 | static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
| 2698 | int ChanNum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | { |
| 2700 | int i; |
| 2701 | WordIO_t AiopIO; |
| 2702 | WordIO_t ChIOOff; |
| 2703 | Byte_t *ChR; |
| 2704 | Word_t ChOff; |
| 2705 | static Byte_t R[4]; |
| 2706 | int brd9600; |
| 2707 | |
| 2708 | if (ChanNum >= CtlP->AiopNumChan[AiopNum]) |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2709 | return 0; /* exceeds num chans in AIOP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | |
| 2711 | /* Channel, AIOP, and controller identifiers */ |
| 2712 | ChP->CtlP = CtlP; |
| 2713 | ChP->ChanID = CtlP->AiopID[AiopNum]; |
| 2714 | ChP->AiopNum = AiopNum; |
| 2715 | ChP->ChanNum = ChanNum; |
| 2716 | |
| 2717 | /* Global direct addresses */ |
| 2718 | AiopIO = CtlP->AiopIO[AiopNum]; |
| 2719 | ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG; |
| 2720 | ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN; |
| 2721 | ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK; |
| 2722 | ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR; |
| 2723 | ChP->IndexData = AiopIO + _INDX_DATA; |
| 2724 | |
| 2725 | /* Channel direct addresses */ |
| 2726 | ChIOOff = AiopIO + ChP->ChanNum * 2; |
| 2727 | ChP->TxRxData = ChIOOff + _TD0; |
| 2728 | ChP->ChanStat = ChIOOff + _CHN_STAT0; |
| 2729 | ChP->TxRxCount = ChIOOff + _FIFO_CNT0; |
| 2730 | ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0; |
| 2731 | |
| 2732 | /* Initialize the channel from the RData array */ |
| 2733 | for (i = 0; i < RDATASIZE; i += 4) { |
| 2734 | R[0] = RData[i]; |
| 2735 | R[1] = RData[i + 1] + 0x10 * ChanNum; |
| 2736 | R[2] = RData[i + 2]; |
| 2737 | R[3] = RData[i + 3]; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2738 | out32(ChP->IndexAddr, R); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | } |
| 2740 | |
| 2741 | ChR = ChP->R; |
| 2742 | for (i = 0; i < RREGDATASIZE; i += 4) { |
| 2743 | ChR[i] = RRegData[i]; |
| 2744 | ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum; |
| 2745 | ChR[i + 2] = RRegData[i + 2]; |
| 2746 | ChR[i + 3] = RRegData[i + 3]; |
| 2747 | } |
| 2748 | |
| 2749 | /* Indexed registers */ |
| 2750 | ChOff = (Word_t) ChanNum *0x1000; |
| 2751 | |
| 2752 | if (sClockPrescale == 0x14) |
| 2753 | brd9600 = 47; |
| 2754 | else |
| 2755 | brd9600 = 23; |
| 2756 | |
| 2757 | ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD); |
| 2758 | ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8); |
| 2759 | ChP->BaudDiv[2] = (Byte_t) brd9600; |
| 2760 | ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8); |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2761 | out32(ChP->IndexAddr, ChP->BaudDiv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | |
| 2763 | ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL); |
| 2764 | ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8); |
| 2765 | ChP->TxControl[2] = 0; |
| 2766 | ChP->TxControl[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2767 | out32(ChP->IndexAddr, ChP->TxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | |
| 2769 | ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL); |
| 2770 | ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8); |
| 2771 | ChP->RxControl[2] = 0; |
| 2772 | ChP->RxControl[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2773 | out32(ChP->IndexAddr, ChP->RxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2774 | |
| 2775 | ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS); |
| 2776 | ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8); |
| 2777 | ChP->TxEnables[2] = 0; |
| 2778 | ChP->TxEnables[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2779 | out32(ChP->IndexAddr, ChP->TxEnables); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | |
| 2781 | ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1); |
| 2782 | ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8); |
| 2783 | ChP->TxCompare[2] = 0; |
| 2784 | ChP->TxCompare[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2785 | out32(ChP->IndexAddr, ChP->TxCompare); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2786 | |
| 2787 | ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1); |
| 2788 | ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8); |
| 2789 | ChP->TxReplace1[2] = 0; |
| 2790 | ChP->TxReplace1[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2791 | out32(ChP->IndexAddr, ChP->TxReplace1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | |
| 2793 | ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2); |
| 2794 | ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8); |
| 2795 | ChP->TxReplace2[2] = 0; |
| 2796 | ChP->TxReplace2[3] = 0; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2797 | out32(ChP->IndexAddr, ChP->TxReplace2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | |
| 2799 | ChP->TxFIFOPtrs = ChOff + _TXF_OUTP; |
| 2800 | ChP->TxFIFO = ChOff + _TX_FIFO; |
| 2801 | |
| 2802 | sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */ |
| 2803 | sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */ |
| 2804 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ |
| 2805 | sOutW(ChP->IndexData, 0); |
| 2806 | ChP->RxFIFOPtrs = ChOff + _RXF_OUTP; |
| 2807 | ChP->RxFIFO = ChOff + _RX_FIFO; |
| 2808 | |
| 2809 | sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */ |
| 2810 | sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */ |
| 2811 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ |
| 2812 | sOutW(ChP->IndexData, 0); |
| 2813 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ |
| 2814 | sOutW(ChP->IndexData, 0); |
| 2815 | ChP->TxPrioCnt = ChOff + _TXP_CNT; |
| 2816 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt); |
| 2817 | sOutB(ChP->IndexData, 0); |
| 2818 | ChP->TxPrioPtr = ChOff + _TXP_PNTR; |
| 2819 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr); |
| 2820 | sOutB(ChP->IndexData, 0); |
| 2821 | ChP->TxPrioBuf = ChOff + _TXP_BUF; |
| 2822 | sEnRxProcessor(ChP); /* start the Rx processor */ |
| 2823 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2824 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | } |
| 2826 | |
| 2827 | /*************************************************************************** |
| 2828 | Function: sStopRxProcessor |
| 2829 | Purpose: Stop the receive processor from processing a channel. |
| 2830 | Call: sStopRxProcessor(ChP) |
| 2831 | CHANNEL_T *ChP; Ptr to channel structure |
| 2832 | |
| 2833 | Comments: The receive processor can be started again with sStartRxProcessor(). |
| 2834 | This function causes the receive processor to skip over the |
| 2835 | stopped channel. It does not stop it from processing other channels. |
| 2836 | |
| 2837 | Warnings: No context switches are allowed while executing this function. |
| 2838 | |
| 2839 | Do not leave the receive processor stopped for more than one |
| 2840 | character time. |
| 2841 | |
| 2842 | After calling this function a delay of 4 uS is required to ensure |
| 2843 | that the receive processor is no longer processing this channel. |
| 2844 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2845 | static void sStopRxProcessor(CHANNEL_T * ChP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2846 | { |
| 2847 | Byte_t R[4]; |
| 2848 | |
| 2849 | R[0] = ChP->R[0]; |
| 2850 | R[1] = ChP->R[1]; |
| 2851 | R[2] = 0x0a; |
| 2852 | R[3] = ChP->R[3]; |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2853 | out32(ChP->IndexAddr, R); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | } |
| 2855 | |
| 2856 | /*************************************************************************** |
| 2857 | Function: sFlushRxFIFO |
| 2858 | Purpose: Flush the Rx FIFO |
| 2859 | Call: sFlushRxFIFO(ChP) |
| 2860 | CHANNEL_T *ChP; Ptr to channel structure |
| 2861 | Return: void |
| 2862 | Comments: To prevent data from being enqueued or dequeued in the Tx FIFO |
| 2863 | while it is being flushed the receive processor is stopped |
| 2864 | and the transmitter is disabled. After these operations a |
| 2865 | 4 uS delay is done before clearing the pointers to allow |
| 2866 | the receive processor to stop. These items are handled inside |
| 2867 | this function. |
| 2868 | Warnings: No context switches are allowed while executing this function. |
| 2869 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2870 | static void sFlushRxFIFO(CHANNEL_T * ChP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | { |
| 2872 | int i; |
| 2873 | Byte_t Ch; /* channel number within AIOP */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2874 | int RxFIFOEnabled; /* 1 if Rx FIFO enabled */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
| 2876 | if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */ |
| 2877 | return; /* don't need to flush */ |
| 2878 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2879 | RxFIFOEnabled = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2881 | RxFIFOEnabled = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | sDisRxFIFO(ChP); /* disable it */ |
| 2883 | for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */ |
| 2884 | sInB(ChP->IntChan); /* depends on bus i/o timing */ |
| 2885 | } |
| 2886 | sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */ |
| 2887 | Ch = (Byte_t) sGetChanNum(ChP); |
| 2888 | sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */ |
| 2889 | sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */ |
| 2890 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ |
| 2891 | sOutW(ChP->IndexData, 0); |
| 2892 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ |
| 2893 | sOutW(ChP->IndexData, 0); |
| 2894 | if (RxFIFOEnabled) |
| 2895 | sEnRxFIFO(ChP); /* enable Rx FIFO */ |
| 2896 | } |
| 2897 | |
| 2898 | /*************************************************************************** |
| 2899 | Function: sFlushTxFIFO |
| 2900 | Purpose: Flush the Tx FIFO |
| 2901 | Call: sFlushTxFIFO(ChP) |
| 2902 | CHANNEL_T *ChP; Ptr to channel structure |
| 2903 | Return: void |
| 2904 | Comments: To prevent data from being enqueued or dequeued in the Tx FIFO |
| 2905 | while it is being flushed the receive processor is stopped |
| 2906 | and the transmitter is disabled. After these operations a |
| 2907 | 4 uS delay is done before clearing the pointers to allow |
| 2908 | the receive processor to stop. These items are handled inside |
| 2909 | this function. |
| 2910 | Warnings: No context switches are allowed while executing this function. |
| 2911 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2912 | static void sFlushTxFIFO(CHANNEL_T * ChP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | { |
| 2914 | int i; |
| 2915 | Byte_t Ch; /* channel number within AIOP */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2916 | int TxEnabled; /* 1 if transmitter enabled */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | |
| 2918 | if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */ |
| 2919 | return; /* don't need to flush */ |
| 2920 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2921 | TxEnabled = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2922 | if (ChP->TxControl[3] & TX_ENABLE) { |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2923 | TxEnabled = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | sDisTransmit(ChP); /* disable transmitter */ |
| 2925 | } |
| 2926 | sStopRxProcessor(ChP); /* stop Rx processor */ |
| 2927 | for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */ |
| 2928 | sInB(ChP->IntChan); /* depends on bus i/o timing */ |
| 2929 | Ch = (Byte_t) sGetChanNum(ChP); |
| 2930 | sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */ |
| 2931 | sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */ |
| 2932 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ |
| 2933 | sOutW(ChP->IndexData, 0); |
| 2934 | if (TxEnabled) |
| 2935 | sEnTransmit(ChP); /* enable transmitter */ |
| 2936 | sStartRxProcessor(ChP); /* restart Rx processor */ |
| 2937 | } |
| 2938 | |
| 2939 | /*************************************************************************** |
| 2940 | Function: sWriteTxPrioByte |
| 2941 | Purpose: Write a byte of priority transmit data to a channel |
| 2942 | Call: sWriteTxPrioByte(ChP,Data) |
| 2943 | CHANNEL_T *ChP; Ptr to channel structure |
| 2944 | Byte_t Data; The transmit data byte |
| 2945 | |
| 2946 | Return: int: 1 if the bytes is successfully written, otherwise 0. |
| 2947 | |
| 2948 | Comments: The priority byte is transmitted before any data in the Tx FIFO. |
| 2949 | |
| 2950 | Warnings: No context switches are allowed while executing this function. |
| 2951 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 2952 | static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | { |
| 2954 | Byte_t DWBuf[4]; /* buffer for double word writes */ |
| 2955 | Word_t *WordPtr; /* must be far because Win SS != DS */ |
| 2956 | register DWordIO_t IndexAddr; |
| 2957 | |
| 2958 | if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */ |
| 2959 | IndexAddr = ChP->IndexAddr; |
| 2960 | sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */ |
| 2961 | if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */ |
| 2962 | return (0); /* nothing sent */ |
| 2963 | |
| 2964 | WordPtr = (Word_t *) (&DWBuf[0]); |
| 2965 | *WordPtr = ChP->TxPrioBuf; /* data byte address */ |
| 2966 | |
| 2967 | DWBuf[2] = Data; /* data byte value */ |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2968 | out32(IndexAddr, DWBuf); /* write it out */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | |
| 2970 | *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */ |
| 2971 | |
| 2972 | DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */ |
| 2973 | DWBuf[3] = 0; /* priority buffer pointer */ |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 2974 | out32(IndexAddr, DWBuf); /* write it out */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | } else { /* write it to Tx FIFO */ |
| 2976 | |
| 2977 | sWriteTxByte(sGetTxRxDataIO(ChP), Data); |
| 2978 | } |
| 2979 | return (1); /* 1 byte sent */ |
| 2980 | } |
| 2981 | |
| 2982 | /*************************************************************************** |
| 2983 | Function: sEnInterrupts |
| 2984 | Purpose: Enable one or more interrupts for a channel |
| 2985 | Call: sEnInterrupts(ChP,Flags) |
| 2986 | CHANNEL_T *ChP; Ptr to channel structure |
| 2987 | Word_t Flags: Interrupt enable flags, can be any combination |
| 2988 | of the following flags: |
| 2989 | TXINT_EN: Interrupt on Tx FIFO empty |
| 2990 | RXINT_EN: Interrupt on Rx FIFO at trigger level (see |
| 2991 | sSetRxTrigger()) |
| 2992 | SRCINT_EN: Interrupt on SRC (Special Rx Condition) |
| 2993 | MCINT_EN: Interrupt on modem input change |
| 2994 | CHANINT_EN: Allow channel interrupt signal to the AIOP's |
| 2995 | Interrupt Channel Register. |
| 2996 | Return: void |
| 2997 | Comments: If an interrupt enable flag is set in Flags, that interrupt will be |
| 2998 | enabled. If an interrupt enable flag is not set in Flags, that |
| 2999 | interrupt will not be changed. Interrupts can be disabled with |
| 3000 | function sDisInterrupts(). |
| 3001 | |
| 3002 | This function sets the appropriate bit for the channel in the AIOP's |
| 3003 | Interrupt Mask Register if the CHANINT_EN flag is set. This allows |
| 3004 | this channel's bit to be set in the AIOP's Interrupt Channel Register. |
| 3005 | |
| 3006 | Interrupts must also be globally enabled before channel interrupts |
| 3007 | will be passed on to the host. This is done with function |
| 3008 | sEnGlobalInt(). |
| 3009 | |
| 3010 | In some cases it may be desirable to disable interrupts globally but |
| 3011 | enable channel interrupts. This would allow the global interrupt |
| 3012 | status register to be used to determine which AIOPs need service. |
| 3013 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 3014 | static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | { |
| 3016 | Byte_t Mask; /* Interrupt Mask Register */ |
| 3017 | |
| 3018 | ChP->RxControl[2] |= |
| 3019 | ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); |
| 3020 | |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 3021 | out32(ChP->IndexAddr, ChP->RxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | |
| 3023 | ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN); |
| 3024 | |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 3025 | out32(ChP->IndexAddr, ChP->TxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | |
| 3027 | if (Flags & CHANINT_EN) { |
| 3028 | Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum]; |
| 3029 | sOutB(ChP->IntMask, Mask); |
| 3030 | } |
| 3031 | } |
| 3032 | |
| 3033 | /*************************************************************************** |
| 3034 | Function: sDisInterrupts |
| 3035 | Purpose: Disable one or more interrupts for a channel |
| 3036 | Call: sDisInterrupts(ChP,Flags) |
| 3037 | CHANNEL_T *ChP; Ptr to channel structure |
| 3038 | Word_t Flags: Interrupt flags, can be any combination |
| 3039 | of the following flags: |
| 3040 | TXINT_EN: Interrupt on Tx FIFO empty |
| 3041 | RXINT_EN: Interrupt on Rx FIFO at trigger level (see |
| 3042 | sSetRxTrigger()) |
| 3043 | SRCINT_EN: Interrupt on SRC (Special Rx Condition) |
| 3044 | MCINT_EN: Interrupt on modem input change |
| 3045 | CHANINT_EN: Disable channel interrupt signal to the |
| 3046 | AIOP's Interrupt Channel Register. |
| 3047 | Return: void |
| 3048 | Comments: If an interrupt flag is set in Flags, that interrupt will be |
| 3049 | disabled. If an interrupt flag is not set in Flags, that |
| 3050 | interrupt will not be changed. Interrupts can be enabled with |
| 3051 | function sEnInterrupts(). |
| 3052 | |
| 3053 | This function clears the appropriate bit for the channel in the AIOP's |
| 3054 | Interrupt Mask Register if the CHANINT_EN flag is set. This blocks |
| 3055 | this channel's bit from being set in the AIOP's Interrupt Channel |
| 3056 | Register. |
| 3057 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 3058 | static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | { |
| 3060 | Byte_t Mask; /* Interrupt Mask Register */ |
| 3061 | |
| 3062 | ChP->RxControl[2] &= |
| 3063 | ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 3064 | out32(ChP->IndexAddr, ChP->RxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3065 | ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN); |
Al Viro | 457fb60 | 2008-03-19 16:27:48 +0000 | [diff] [blame] | 3066 | out32(ChP->IndexAddr, ChP->TxControl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3067 | |
| 3068 | if (Flags & CHANINT_EN) { |
| 3069 | Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum]; |
| 3070 | sOutB(ChP->IntMask, Mask); |
| 3071 | } |
| 3072 | } |
| 3073 | |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 3074 | static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | { |
| 3076 | sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum); |
| 3077 | } |
| 3078 | |
| 3079 | /* |
| 3080 | * Not an official SSCI function, but how to reset RocketModems. |
| 3081 | * ISA bus version |
| 3082 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 3083 | static void sModemReset(CONTROLLER_T * CtlP, int chan, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3084 | { |
| 3085 | ByteIO_t addr; |
| 3086 | Byte_t val; |
| 3087 | |
| 3088 | addr = CtlP->AiopIO[0] + 0x400; |
| 3089 | val = sInB(CtlP->MReg3IO); |
| 3090 | /* if AIOP[1] is not enabled, enable it */ |
| 3091 | if ((val & 2) == 0) { |
| 3092 | val = sInB(CtlP->MReg2IO); |
| 3093 | sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03)); |
| 3094 | sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6)); |
| 3095 | } |
| 3096 | |
| 3097 | sEnAiop(CtlP, 1); |
| 3098 | if (!on) |
| 3099 | addr += 8; |
| 3100 | sOutB(addr + chan, 0); /* apply or remove reset */ |
| 3101 | sDisAiop(CtlP, 1); |
| 3102 | } |
| 3103 | |
| 3104 | /* |
| 3105 | * Not an official SSCI function, but how to reset RocketModems. |
| 3106 | * PCI bus version |
| 3107 | */ |
Adrian Bunk | f15313b | 2005-06-25 14:59:05 -0700 | [diff] [blame] | 3108 | static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | { |
| 3110 | ByteIO_t addr; |
| 3111 | |
| 3112 | addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */ |
| 3113 | if (!on) |
| 3114 | addr += 8; |
| 3115 | sOutB(addr + chan, 0); /* apply or remove reset */ |
| 3116 | } |
| 3117 | |
| 3118 | /* Resets the speaker controller on RocketModem II and III devices */ |
| 3119 | static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model) |
| 3120 | { |
| 3121 | ByteIO_t addr; |
| 3122 | |
| 3123 | /* RocketModem II speaker control is at the 8th port location of offset 0x40 */ |
| 3124 | if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) { |
| 3125 | addr = CtlP->AiopIO[0] + 0x4F; |
| 3126 | sOutB(addr, 0); |
| 3127 | } |
| 3128 | |
| 3129 | /* RocketModem III speaker control is at the 1st port location of offset 0x80 */ |
| 3130 | if ((model == MODEL_UPCI_RM3_8PORT) |
| 3131 | || (model == MODEL_UPCI_RM3_4PORT)) { |
| 3132 | addr = CtlP->AiopIO[0] + 0x88; |
| 3133 | sOutB(addr, 0); |
| 3134 | } |
| 3135 | } |
| 3136 | |
| 3137 | /* Returns the line number given the controller (board), aiop and channel number */ |
| 3138 | static unsigned char GetLineNumber(int ctrl, int aiop, int ch) |
| 3139 | { |
| 3140 | return lineNumbers[(ctrl << 5) | (aiop << 3) | ch]; |
| 3141 | } |
| 3142 | |
| 3143 | /* |
| 3144 | * Stores the line number associated with a given controller (board), aiop |
| 3145 | * and channel number. |
| 3146 | * Returns: The line number assigned |
| 3147 | */ |
| 3148 | static unsigned char SetLineNumber(int ctrl, int aiop, int ch) |
| 3149 | { |
| 3150 | lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++; |
| 3151 | return (nextLineNumber - 1); |
| 3152 | } |