moxa.c revision ec09cd562135158dcb8a6c08e5a9efa36febedb1
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa.c -- MOXA Intellio family multiport serial driver. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5b9705b603d1d29471aa2977e6310f4f9a4e85925Jiri Slaby * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). 6b9705b603d1d29471aa2977e6310f4f9a4e85925Jiri Slaby * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This code is loosely based on the Linux serial driver, written by 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Linus Torvalds, Theodore T'so and others. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA Intellio Series Driver 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for : LINUX 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * date : 1999/1/7 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * version : 5.1 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 29037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#include <linux/firmware.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/signal.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/major.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/fcntl.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ptrace.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/serial.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bitops.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#include "moxa.h" 52037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 53b9705b603d1d29471aa2977e6310f4f9a4e85925Jiri Slaby#define MOXA_VERSION "6.0k" 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#define MOXA_FW_HDRLEN 32 56037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5711324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXAMAJOR 172 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_BOARDS 4 /* Don't change this value */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ 6111324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ 6408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby (brd)->boardType == MOXA_BOARD_C320_PCI) 6508d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Define the Moxa PCI vendor and device IDs. 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_ISA 0 7011324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_PCI 1 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum { 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_PCI = 1, 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_ISA, 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_PCI, 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_ISA, 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_CP204J, 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *moxa_brdname[] = 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo PCI series", 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo ISA series", 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo PCI series", 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo ISA series", 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CP-204J series", 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_device_id moxa_pcibrds[] = { 915ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), 925ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C218_PCI }, 935ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), 945ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C320_PCI }, 955ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), 965ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_CP204J }, 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0 } 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE(pci, moxa_pcibrds); 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 102037182346f0991683cc7320a257c3f6089432ceeJiri Slabystruct moxa_port; 103037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1048f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic struct moxa_board_conf { 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int boardType; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numPorts; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int busType; 1088f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 109810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int ready; 1108f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 111037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *ports; 112037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1138f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *basemem; 1148f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intNdx; 1158f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intPend; 1168f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intTable; 1178f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby} moxa_boards[MAX_BOARDS]; 1188f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 1198f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct mxser_mstatus { 1208f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby tcflag_t cflag; 1218f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int cts; 1228f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dsr; 1238f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int ri; 1248f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dcd; 1259dff89cd82af7bccc706fed288b1c33a51c3b937Jiri Slaby}; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1278f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxaq_str { 1288f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int inq; 1298f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int outq; 1308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1328f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxa_port { 133b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_board_conf *board; 1347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty; 1357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *tableAddr; 1367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int close_delay; 139a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int count; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asyncflags; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cflag; 1427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned long statusflags; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t open_wait; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 DCDState; 1467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lineCtrl; 1477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lowChkFlag; 1488f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystruct mon_str { 15174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int tick; 15274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int rxcnt[MAX_PORTS]; 15374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int txcnt[MAX_PORTS]; 15474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby}; 15574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* statusflags */ 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXSTOPPED 0x1 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LOWWAIT 0x2 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EMPTYWAIT 0x4 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define THROTTLE 0x8 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SERIAL_DO_RESTART 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor = MOXAMAJOR; 16774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic struct mon_str moxaLog; 16874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic unsigned int moxaFuncTout = HZ / 2; 1697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic unsigned int moxaLowWaterChk; 170a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic DEFINE_MUTEX(moxa_openlock); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for insmod */ 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 173d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned long baseaddr[MAX_BOARDS]; 174d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int type[MAX_BOARDS]; 175d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int numports[MAX_BOARDS]; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("William Chen"); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 182d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(type, uint, NULL, 0); 183d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(type, "card type: C218=2, C320=4"); 184d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(baseaddr, ulong, NULL, 0); 185d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(baseaddr, "base address"); 186d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(numports, uint, NULL, 0); 187d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(numports, "numports (ignored for C218)"); 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * static functions: 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *, struct file *); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *, struct file *); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *, const unsigned char *, int); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *); 202606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void moxa_set_termios(struct tty_struct *, struct ktermios *); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long); 210db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *, struct ktermios *); 2116f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *); 2126f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *); 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa board interface functions: 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 216b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *); 217b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *); 218b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); 219b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *, int *, int *); 220b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *, int, int); 221b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); 222b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *); 223b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *, int); 2242108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int); 2257bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *); 226b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *); 227b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *); 228b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *); 229b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *); 230b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *); 2318f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); 2328f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); 233b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable); 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 23674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * I/O functions 23774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 23874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 23974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_wait_finish(void __iomem *ofsAddr) 24074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 24174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned long end = jiffies + moxaFuncTout; 24274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 24374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby while (readw(ofsAddr + FuncCode) != 0) 24474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (time_after(jiffies, end)) 24574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return; 24674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) 24774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby printk(KERN_WARNING "moxa function expired\n"); 24874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 24974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 250eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slabystatic void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) 25174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 25274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(arg, ofsAddr + FuncArg); 25374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(cmd, ofsAddr + FuncCode); 25474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxa_wait_finish(ofsAddr); 25574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 25674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 2577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_low_water_check(void __iomem *ofsAddr) 2587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 2597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 rptr, wptr, mask, len; 2607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 2617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 2627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby rptr = readw(ofsAddr + RXrptr); 2637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby wptr = readw(ofsAddr + RXwptr); 2647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby mask = readw(ofsAddr + RX_mask); 2657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby len = (wptr - rptr) & mask; 2667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (len <= Low_water) 2677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxafunc(ofsAddr, FC_SendXon, 0); 2687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 2697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 2707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 27174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 27274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * TTY operations 27374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 27474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 27574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic int moxa_ioctl(struct tty_struct *tty, struct file *file, 27674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int cmd, unsigned long arg) 27774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 27874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *ch = tty->driver_data; 27974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby void __user *argp = (void __user *)arg; 280a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int status, ret = 0; 28174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 28274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (tty->index == MAX_PORTS) { 28374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && 28474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby cmd != MOXA_GETMSTATUS) 28574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 28674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } else if (!ch) 28774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -ENODEV; 28874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 28974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby switch (cmd) { 29074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETDATACOUNT: 29174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxaLog.tick = jiffies; 292a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) 293a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -EFAULT; 294a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_FLUSH_QUEUE: 29674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby MoxaPortFlushData(ch, arg); 297a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IOQUEUE: { 29974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str __user *argm = argp; 30074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str tmp; 30174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 30274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 30374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 304a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 30574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 30674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 30774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 30874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 30974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (moxa_boards[i].ready) { 31074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.inq = MoxaPortRxQueue(p); 31174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.outq = MoxaPortTxQueue(p); 31274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 313a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 314a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 31574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 316a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 31774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 31874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 319a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 320a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } case MOXA_GET_OQUEUE: 32274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortTxQueue(ch); 323a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 324a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IQUEUE: 32674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortRxQueue(ch); 327a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 328a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETMSTATUS: { 33074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus __user *argm = argp; 33174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus tmp; 33274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 33374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 33474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 335a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 33674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 33774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 33874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 33974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 34074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!moxa_boards[i].ready) 34174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby goto copy; 34274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 34374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortLineStatus(p); 34474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 1) 34574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cts = 1; 34674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 2) 34774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dsr = 1; 34874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 4) 34974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dcd = 1; 35074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 35174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!p->tty || !p->tty->termios) 35274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->cflag; 35374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby else 35474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->tty->termios->c_cflag; 35574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabycopy: 356a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 357a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 35874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 359a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 36074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 36174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 362a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 363a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 36474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 36574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCGSERIAL: 366a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 367a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_get_serial_info(ch, argp); 368a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 369a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 37074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCSSERIAL: 371a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 372a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_set_serial_info(ch, argp); 373a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 374a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 375a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby default: 376a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -ENOIOCTLCMD; 37774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 378a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return ret; 37974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 38074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 38174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_break_ctl(struct tty_struct *tty, int state) 38274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 38374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *port = tty->driver_data; 38474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 38574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, 38674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby Magic_code); 38774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 38874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 389b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations moxa_ops = { 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = moxa_open, 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = moxa_close, 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = moxa_write, 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = moxa_write_room, 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = moxa_flush_buffer, 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = moxa_chars_in_buffer, 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = moxa_ioctl, 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = moxa_throttle, 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = moxa_unthrottle, 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = moxa_set_termios, 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = moxa_stop, 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = moxa_start, 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = moxa_hangup, 40374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby .break_ctl = moxa_break_ctl, 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = moxa_tiocmget, 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = moxa_tiocmset, 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 408aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic struct tty_driver *moxaDriver; 409aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); 41034af946a22724c4e2b204957f2b24b22a0fb121cIngo Molnarstatic DEFINE_SPINLOCK(moxa_lock); 41133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 41274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 41374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * HW init 41474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 41574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 416037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) 417037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 418037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 419037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 420037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 421037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 1) 422037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 423037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 424037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 425037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 3) 426037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 427037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 428037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 429037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 2) 430037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 431037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 432037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 433037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 434037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 435037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 436037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 437037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 438037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw(const void *ptr) 439037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 440037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const __le16 *lptr = ptr; 441037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 442037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (*lptr != cpu_to_le16(0x7980)) 443037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 444037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 445037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 446037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 447037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 448037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, 449037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 450037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 451037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 452037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 tmp; 453037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 454037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(HW_reset, baseAddr + Control_reg); /* reset */ 455037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 456037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memset_io(baseAddr, 0, 4096); 457037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr, buf, len); /* download BIOS */ 458037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(0, baseAddr + Control_reg); /* restart */ 459037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 460037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(2000); 461037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 462037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 463037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 464037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 465037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 466037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C218_KeyCode) 467037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 468037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 469037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 470037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 471037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != CP204J_KeyCode) 472037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 473037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 474037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 475037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_key); 476037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C320_KeyCode) 477037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 478037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_status); 479037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != STS_init) { 480eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " 481037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "module not found\n"); 482037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 483037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 484037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 485037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 486037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 487037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 488037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 489eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); 490037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 491037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 492037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 493037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, 494037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 495037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 496037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 497037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 498037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len < 7168) { 499eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); 500037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 501037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 502037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 503037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(len - 7168 - 2, baseAddr + C320bapi_len); 504037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(1, baseAddr + Control_reg); /* Select Page 1 */ 505037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); 506037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(2, baseAddr + Control_reg); /* Select Page 2 */ 507037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); 508037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 509037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 510037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 511037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5125292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slabystatic int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, 513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 515037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 516037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const u16 *uptr = ptr; 517037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t wlen, len2, j; 5185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned long key, loadbuf, loadlen, checksum, checksum_ok; 51908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int i, retry; 520037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 usum, keycode; 521037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : 5235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby C218_KeyCode; 524037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby switch (brd->boardType) { 5265292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_CP204J: 5275292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_ISA: 5285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_PCI: 5295292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C218_key; 5305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C218_LoadBuf; 5315292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C218DLoad_len; 5325292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C218check_sum; 5335292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C218chksum_ok; 5345292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 5355292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby default: 5365292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C320_key; 5375292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = C320_KeyCode; 5385292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C320_LoadBuf; 5395292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C320DLoad_len; 5405292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C320check_sum; 5415292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C320chksum_ok; 5425292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 543037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 544037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 545037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum = 0; 546037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 547037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < wlen; i++) 548037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum += le16_to_cpu(uptr[i]); 549037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry = 0; 550037182346f0991683cc7320a257c3f6089432ceeJiri Slaby do { 551037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 552037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j = 0; 553037182346f0991683cc7320a257c3f6089432ceeJiri Slaby while (wlen) { 554037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len2 = (wlen > 2048) ? 2048 : wlen; 555037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen -= len2; 5565292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); 557037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j += len2 << 1; 5585292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 5595292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(len2, baseAddr + loadlen); 5605292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5615292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5625292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 563037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 564037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 565037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5665292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) != keycode) 567037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 568037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5695292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + loadlen); 5705292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(usum, baseAddr + checksum); 5715292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5725292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5735292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 574037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 575037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 576037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 577037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry++; 5785292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); 5795292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readb(baseAddr + checksum_ok) != 1) 580037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 581037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5825292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 583037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 600; i++) { 584037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 585037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 586037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 587037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 588037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 589037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 590037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 59108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 5925292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ 5935292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3800, baseAddr + TMS320_PORT1); 5945292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3900, baseAddr + TMS320_PORT2); 5955292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(28499, baseAddr + TMS320_CLOCK); 5965292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } else { 5975292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3200, baseAddr + TMS320_PORT1); 5985292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3400, baseAddr + TMS320_PORT2); 5995292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(19999, baseAddr + TMS320_CLOCK); 6005292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 601037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 602037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(1, baseAddr + Disable_IRQ); 603037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(0, baseAddr + Magic_no); 604037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 500; i++) { 605037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 606037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 607037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 608037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 609037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 610037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 611037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 61208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 6135292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby j = readw(baseAddr + Module_cnt); 6145292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (j <= 0) 6155292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 6165292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->numPorts = j * 8; 6175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(j, baseAddr + Module_no); 6185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + Magic_no); 6195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 600; i++) { 6205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 6215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 6225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby msleep(10); 6235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 6245292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 6255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 626037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 627037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intNdx = baseAddr + IRQindex; 628037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intPend = baseAddr + IRQpending; 629037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intTable = baseAddr + IRQtable; 630037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 631037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 632037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 633037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 634037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, 635037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 636037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 637037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *ofsAddr, *baseAddr = brd->basemem; 638037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *port; 639037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int retval, i; 640037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 641037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len % 2) { 642eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios length is not even\n"); 643037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 644037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 645037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 6465292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ 6475292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (retval) 6485292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return retval; 6495292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 650037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 651037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 652037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 653037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 654037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 655037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 656b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 659037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 660037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 661037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_mask, ofsAddr + RX_mask); 662037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_mask, ofsAddr + TX_mask); 663037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); 664037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); 665037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 666037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); 667037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); 668037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 669037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 670037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 671037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 672037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 673037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 674b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 675037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 676037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 677037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 678037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 679037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->numPorts) { 680037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 8: 681037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_mask, ofsAddr + RX_mask); 682037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_mask, ofsAddr + TX_mask); 683037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); 684037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); 685037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); 686037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); 687037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 688037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 689037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 16: 690037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_mask, ofsAddr + RX_mask); 691037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_mask, ofsAddr + TX_mask); 692037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); 693037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); 694037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); 695037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); 696037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 697037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 698037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 24: 699037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_mask, ofsAddr + RX_mask); 700037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_mask, ofsAddr + TX_mask); 701037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); 702037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); 703037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); 704037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 705037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 706037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 32: 707037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_mask, ofsAddr + RX_mask); 708037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_mask, ofsAddr + TX_mask); 709037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_ofs, ofsAddr + Ofs_txb); 710037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); 711037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); 712037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); 713037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 714037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 715037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 716037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 717037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 718037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 719037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 720037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 721037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 722037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) 723037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 724037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void *ptr = fw->data; 725037182346f0991683cc7320a257c3f6089432ceeJiri Slaby char rsn[64]; 726037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 lens[5]; 727037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len; 728037182346f0991683cc7320a257c3f6089432ceeJiri Slaby unsigned int a, lenp, lencnt; 729037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret = -EINVAL; 730037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct { 731037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le32 magic; /* 0x34303430 */ 732037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved1[2]; 733037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 type; /* UNIX = 3 */ 734037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 model; /* C218T=1, C320T=2, CP204=3 */ 735037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved2[8]; 736037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le16 len[5]; 737037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } *hdr = ptr; 738037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 739037182346f0991683cc7320a257c3f6089432ceeJiri Slaby BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); 740037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 741037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (fw->size < MOXA_FW_HDRLEN) { 742037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "too short (even header won't fit)"); 743037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 744037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 745037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->magic != cpu_to_le32(0x30343034)) { 746037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); 747037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 748037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 749037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->type != 3) { 750037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for linux, type is %u", hdr->type); 751037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 752037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 753037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_check_fw_model(brd, hdr->model)) { 754037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for this card, model is %u", hdr->model); 755037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 756037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 757037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 758037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len = MOXA_FW_HDRLEN; 759037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lencnt = hdr->model == 2 ? 5 : 3; 760037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (a = 0; a < ARRAY_SIZE(lens); a++) { 761037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lens[a] = le16_to_cpu(hdr->len[a]); 762037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (lens[a] && len + lens[a] <= fw->size && 763037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxa_check_fw(&fw->data[len])) 764eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_WARNING "MOXA firmware: unexpected input " 765037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "at offset %u, but going on\n", (u32)len); 766037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!lens[a] && a < lencnt) { 767037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "too few entries in fw file"); 768037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 769037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 770037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len += lens[a]; 771037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 772037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 773037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len != fw->size) { 774037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, 775037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (u32)len); 776037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 777037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 778037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 779037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += MOXA_FW_HDRLEN; 780037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp = 0; /* bios */ 781037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 782037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "read above"); 783037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 784037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_bios(brd, ptr, lens[lenp]); 785037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 786037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 787037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 788037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* we skip the tty section (lens[1]), since we don't need it */ 789037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 790037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; /* comm */ 791037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 792037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->model == 2) { 793037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_320b(brd, ptr, lens[lenp]); 794037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 795037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 796037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* skip another tty */ 797037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 798037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; 799037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 800037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 801037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_code(brd, ptr, lens[lenp]); 802037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 803037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 804037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 805037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 806037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 807037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); 808037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 809037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 810037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 811037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) 812037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 813037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const struct firmware *fw; 814037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const char *file; 815810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_port *p; 816810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 817037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret; 818037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 819810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), 820810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby GFP_KERNEL); 821810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (brd->ports == NULL) { 822810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby printk(KERN_ERR "cannot allocate memory for ports\n"); 823810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ret = -ENOMEM; 824810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err; 825810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 826810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 827810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { 828810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->type = PORT_16550A; 829810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->close_delay = 5 * HZ / 10; 830810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 831810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby init_waitqueue_head(&p->open_wait); 832810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 833810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 834037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 835037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 836037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 837037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c218tunx.cod"; 838037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 839037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 840037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "cp204unx.cod"; 841037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 842037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 843037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c320tunx.cod"; 844037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 845037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 846037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 847037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = request_firmware(&fw, file, dev); 848037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) { 849ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby printk(KERN_ERR "MOXA: request_firmware failed. Make sure " 850ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "you've placed '%s' file into your firmware " 851ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "loader directory (e.g. /lib/firmware)\n", 852ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby file); 853810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 854037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 855037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 856037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_fw(brd, fw); 857037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 858037182346f0991683cc7320a257c3f6089432ceeJiri Slaby release_firmware(fw); 859810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 860810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (ret) 861810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 862810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 8632a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_lock_bh(&moxa_lock); 864810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 1; 8650bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby if (!timer_pending(&moxaTimer)) 8660bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 8672a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock_bh(&moxa_lock); 8680bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 869810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return 0; 870810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr_free: 871810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 872810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr: 873037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 874037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 875037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 876810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabystatic void moxa_board_deinit(struct moxa_board_conf *brd) 877810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby{ 878a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int a, opened; 879a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 880a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 8817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 882810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 0; 8837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 884a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 885a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby /* pci hot-un-plug support */ 886a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 887a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) 888a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby tty_hangup(brd->ports[a].tty); 889a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 890a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened = 0; 891a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 892a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) 893a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened++; 894a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 895a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!opened) 896a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 897a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby msleep(50); 898a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 899a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 900a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 901810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby iounmap(brd->basemem); 902810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->basemem = NULL; 903810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 904810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby} 905810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 9079cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic int __devinit moxa_pci_probe(struct pci_dev *pdev, 9089cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby const struct pci_device_id *ent) 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9109cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *board; 9119cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby unsigned int i; 9129cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int board_type = ent->driver_data; 9139cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int retval; 9149cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9159cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = pci_enable_device(pdev); 9167aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (retval) { 9177aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't enable pci device\n"); 9189cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9197aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9209cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9219cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby for (i = 0; i < MAX_BOARDS; i++) 9229cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (moxa_boards[i].basemem == NULL) 9239cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby break; 9249cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9259cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = -ENODEV; 9269cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (i >= MAX_BOARDS) { 9277aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " 9289cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby "found. Board is ignored.\n", MAX_BOARDS); 9299cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9309cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby } 9319cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9329cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby board = &moxa_boards[i]; 933e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 934e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby retval = pci_request_region(pdev, 2, "moxa-base"); 935e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby if (retval) { 936e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby dev_err(&pdev->dev, "can't request pci region 2\n"); 937e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err; 938e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby } 939e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 940e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); 9417aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (board->basemem == NULL) { 9427aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't remap io space 2\n"); 943e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err_reg; 9447aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9459cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->boardType = board_type; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (board_type) { 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_ISA: 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_PCI: 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 8; 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_CP204J: 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 4; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 0; 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->busType = MOXA_BUS_TYPE_PCI; 961a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 962037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retval = moxa_init_board(board, &pdev->dev); 963037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (retval) 964037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err_base; 965037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 9669cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby pci_set_drvdata(pdev, board); 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 968bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", 969bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby moxa_brdname[board_type - 1], board->numPorts); 970bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 971eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 972037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 973037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 974037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 975e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 976e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 9789cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 9799cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 9809cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9819cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 9829cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 9839cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 9849cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 985810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(brd); 986810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 987e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 989a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 990a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 991a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 992a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 993a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 994a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 995a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1000810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int isabrds = 0; 1001d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10037aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 10047aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 10109b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 1017606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 1018606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 1023eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1028d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 1030d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 1031d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 1032810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 1034d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 1035d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 1036d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 1037d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 10387aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 1039d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 1040d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 1041d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 1042d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 1043d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 1044d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 1045d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->basemem = ioremap(baseaddr[i], 0x4000); 1046d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 1047eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: can't remap %lx\n", 1048d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1051037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 1052037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 1053037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 1054037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 1055037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1056d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 1057bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " 1058bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby "ready (%u ports, firmware loaded)\n", 1059bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby baseaddr[i], brd->numPorts); 1060bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 1061d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 1062d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1065d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1067a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 1069a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 1070a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 1071eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "Can't register MOXA pci driver!\n"); 1072d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 1073a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1076a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1077a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1082eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby unsigned int i; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10849cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 1085a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 10869cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 1087a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1088810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ 1089810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (moxa_boards[i].ready) 1090810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(&moxa_boards[i]); 10912a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10922a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby del_timer_sync(&moxaTimer); 10932a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10942a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (tty_unregister_driver(moxaDriver)) 10952a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 10962a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby "serial driver\n"); 10972a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby put_tty_driver(moxaDriver); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1103a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic void moxa_close_port(struct moxa_port *ch) 1104a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1105a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_shut_down(ch); 1106a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaPortFlushData(ch, 2); 1107a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; 1108a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty->driver_data = NULL; 1109a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty = NULL; 1110a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1111a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1112a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 1113a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch) 1114a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1115a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby DEFINE_WAIT(wait); 1116a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int retval = 0; 1117a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby u8 dcd; 1118a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1119a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 1120a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); 1121a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty_hung_up_p(filp)) { 1122a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#ifdef SERIAL_DO_RESTART 1123a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1124a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#else 1125a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -EAGAIN; 1126a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#endif 1127a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1128a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1129a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 1130a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby dcd = ch->DCDState; 1131a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 1132a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (dcd) 1133a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1134a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1135a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (signal_pending(current)) { 1136a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1137a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1138a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1139a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby schedule(); 1140a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1141a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby finish_wait(&ch->open_wait, &wait); 1142a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1143a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 1144a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1145a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1148810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_board_conf *brd; 11498f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 115311324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 115574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1157a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (mutex_lock_interruptible(&moxa_openlock)) 1158a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return -ERESTARTSYS; 1159810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; 1160a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!brd->ready) { 1161a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1162810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return -ENODEV; 1163a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1165810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count++; 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = tty; 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) { 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 1171db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 1172b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 1173b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 1174a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaSetFifo(ch, ch->type == PORT_16550A); 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_INITIALIZED; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1177a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1179a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = 0; 1180a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) 1181a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 1182a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1183a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (retval) { 1184a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) /* 0 means already hung up... */ 1185a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (--ch->count == 0) 1186a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1187a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } else 1188a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags |= ASYNC_NORMAL_ACTIVE; 1189a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1191a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11968f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 119911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1200a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (port == MAX_PORTS || tty_hung_up_p(filp)) 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1203a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1204a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1205a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) 1206a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 1207a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty->count == 1 && ch->count != 1) { 12087aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 12097aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "tty->count is 1, ch->count is %d\n", ch->count); 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 1; 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (--ch->count < 0) { 12137aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 12147aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1217a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) 1218a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_INITIALIZED) { 12226f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1226a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1227a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabyunlock: 1228a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1234b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 1235b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1238b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 123933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 12407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 12412108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = MoxaPortWriteData(ch, buf, count); 12427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 1245eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return len; 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12508f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 1253eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1254b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1256eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1257b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1262b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1266b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1272b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1282eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1283b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 12906f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1292eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return chars; 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1297a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1300a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1301a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1302a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1303a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 130474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1305a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1307b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1312b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 1319a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1326a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 133011324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1331a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1332a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1333a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1334a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 133574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1336a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1338b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1347b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 1348a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *tty) 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1354eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= THROTTLE; 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *tty) 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1361eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1367eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct ktermios *old_termios) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1369eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1373db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 1374eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1380eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1384b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1391eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1399b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1405a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1407a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1408a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1409a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) { 1410a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1411a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return; 1412a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 1414a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1415a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1416a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14207bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14227bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby dcd = !!dcd; 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1424eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { 1425a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!dcd) 14267bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_hangup(p->tty); 14277bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14287bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->DCDState = dcd; 14297bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int moxa_poll_port(struct moxa_port *p, unsigned int handle, 14327bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip) 14337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = p->tty; 14357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *ofsAddr; 14367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; 14377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 intr; 14387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty) { 14407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & EMPTYWAIT) && 14417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) == 0) { 14427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & LOWWAIT) && !tty->stopped && 14467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) <= WAKEUP_CHARS) { 14477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~LOWWAIT; 14487bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14497bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14507bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (inited && !(p->statusflags & THROTTLE) && 14527bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortRxQueue(p) > 0) { /* RX */ 14537bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortReadData(p); 14547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } else { 14577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortFlushData(p, 0); /* flush RX */ 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14600bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 14617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!handle) /* nothing else to do */ 14627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby intr = readw(ip); /* port irq status */ 14657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr == 0) 14667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(0, ip); /* ACK port */ 14697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr = p->tableAddr; 14707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrTx) /* disable tx intr */ 14717bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(readw(ofsAddr + HostStat) & ~WakeupTx, 14727bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr + HostStat); 14737bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14747bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!inited) 14757bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14767bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 14787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_insert_flip_char(tty, 0, TTY_BREAK); 14797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14827bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrLine) 14837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 14847bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14857bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14867bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14877bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14887bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_poll(unsigned long ignored) 14897bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14907bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_board_conf *brd; 14917bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip; 14922a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby unsigned int card, port, served = 0; 14937bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14947bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock(&moxa_lock); 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 14967bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby brd = &moxa_boards[card]; 14977bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!brd->ready) 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 14997bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15002a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby served++; 15012a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 15027bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = NULL; 15037bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(brd->intPend) == 0xff) 15047bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 15057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15067bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++) 15077bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_poll_port(&brd->ports[port], !!ip, ip + port); 15087bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15097bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (ip) 15107bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writeb(0, brd->intPend); /* ACK */ 15117bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15127bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (moxaLowWaterChk) { 15137bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_port *p = brd->ports; 15147bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++, p++) 15157bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (p->lowChkFlag) { 15167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->lowChkFlag = 0; 15177bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_low_water_check(p->tableAddr); 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15217bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLowWaterChk = 0; 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15232a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (served) 15242a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 15252a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock(&moxa_lock); 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1530db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1532eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby register struct ktermios *ts = tty->termios; 1533eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 1534db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1545db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1546db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1547db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1548b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1549b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1550db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1551db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1552db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1553db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15566f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15588f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 15627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15656f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *ch) 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1567a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct tty_struct *tp = ch->tty; 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1572b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1577a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (C_HUPCL(tp)) 1578b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1580a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_INITIALIZED; 1582a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1589b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1592eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (mode < 0 || mode > 2) 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1594b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1597b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 15986f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 165208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby * speed_t MoxaPortSetBaud(int port, speed_t baud); 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1665606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1667606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1668c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 174133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 174333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1794b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1797eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u16 lowwater = 512; 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1799b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 180108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 1803eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby else 1804eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby writew(readw(ofsAddr + HostStat) | WakeupBreak, 1805eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby ofsAddr + HostStat); 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1814b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1816b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slabystatic speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 182608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 182708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int clock, val; 182808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby speed_t max; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 183008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby max = MOXA_IS_320(port->board) ? 460800 : 921600; 183108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (baud < 50) 1832eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 183508d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby clock = 921600; 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 1839eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1842b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 1843b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1849b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1878eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 188008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board) && baud >= 921600) 188108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby return -1; 188208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 1883db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 18896f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1892eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1895b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 1896b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1898b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 1899b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 1900b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 1901b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 1902b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 1903eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1906b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1908eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u8 mode = 0; 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 1914b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 1915b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1918b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 1919b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1921b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 1933b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1936b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 194208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) { 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 19497bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (val & 8) 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 1951a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 19527bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(port, val & 8); 1953a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 19557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return val; 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *port, 19592108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby const unsigned char *buffer, int len) 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 19622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int c, total; 19632108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 head, tail, tx_mask, spage, epage; 19642108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead; 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1966b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 1967b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 19732108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 1976b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxaLog.txcnt[port->tty->index] += c; 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 19882108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19892108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 19962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (c > 0) { 19972108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = Page_size - pageofs; 19982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (len > c) 19992108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = c; 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20022108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 20032108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 20072108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c -= len; 20082108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20092108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby tail = (tail + total) & tx_mask; 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20112108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(tail, ofsAddr + TXwptr); 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 20132108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port) 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20187bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = port->tty; 20192108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned char *dst; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 20212108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int count, len, total; 20222108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 tail, rx_mask, spage, epage; 20232108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead, head; 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2025b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2026b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 20322108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 203433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 203633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 20377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLog.rxcnt[tty->index] += total; 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 20432108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = (tail >= head) ? (tail - head) : 20442108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby (rx_mask + 1 - head); 20452108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20462108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(len, count)); 20472108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 20542108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (count > 0) { 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20572108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(Page_size - pageofs, count)); 20592108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20602108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby 20612108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count -= len; 20622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby pageofs = (pageofs + len) & Page_mask; 20632108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (pageofs == 0 && ++pageno == epage) 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20652108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20662108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby head = (head + total) & rx_mask; 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20682108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(head, ofsAddr + RXrptr); 20692108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2071b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20732108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2077b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2079b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20802108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20852108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2088b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2090b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20912108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return mask - ((wptr - rptr) & mask); 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2099b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2101b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21022108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 21072108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2110b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2112b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2115b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2117b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21208f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 2121eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *retinfo) 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2123eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct tmp = { 2124eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .type = info->type, 2125eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .line = info->tty->index, 2126eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .flags = info->asyncflags, 2127eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .baud_base = 921600, 2128eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .close_delay = info->close_delay 2129eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby }; 2130eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21348f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 2135eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *new_info) 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2139eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2142eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (new_serial.irq != 0 || new_serial.port != 0 || 2143eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.custom_divisor != 0 || 2144eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.baud_base != 921600) 2145eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->asyncflags & ~ASYNC_USR_MASK))) 2150eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 2151eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby } else 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = new_serial.close_delay * HZ / 100; 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2157eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby MoxaSetFifo(info, new_serial.type == PORT_16550A); 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 2160eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2169b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2171b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2181