moxa.c revision 0e0fd7d73ed130583dca16405b029f56bf65109f
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 { 1339de6a51fee08f9e7020074738150441305e83af2Alan Cox struct tty_port port; 134b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_board_conf *board; 1357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *tableAddr; 1367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cflag; 1397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned long statusflags; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 DCDState; 1427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lineCtrl; 1437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lowChkFlag; 1448f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystruct mon_str { 14774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int tick; 14874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int rxcnt[MAX_PORTS]; 14974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int txcnt[MAX_PORTS]; 15074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby}; 15174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* statusflags */ 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXSTOPPED 0x1 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LOWWAIT 0x2 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EMPTYWAIT 0x4 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define THROTTLE 0x8 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SERIAL_DO_RESTART 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor = MOXAMAJOR; 16374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic struct mon_str moxaLog; 16474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic unsigned int moxaFuncTout = HZ / 2; 1657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic unsigned int moxaLowWaterChk; 166a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic DEFINE_MUTEX(moxa_openlock); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for insmod */ 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 169d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned long baseaddr[MAX_BOARDS]; 170d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int type[MAX_BOARDS]; 171d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int numports[MAX_BOARDS]; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("William Chen"); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 178d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(type, uint, NULL, 0); 179d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(type, "card type: C218=2, C320=4"); 180d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(baseaddr, ulong, NULL, 0); 181d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(baseaddr, "base address"); 182d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(numports, uint, NULL, 0); 183d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(numports, "numports (ignored for C218)"); 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * static functions: 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *, struct file *); 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *, struct file *); 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *, const unsigned char *, int); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *); 198606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void moxa_set_termios(struct tty_struct *, struct ktermios *); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long); 206db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *, struct ktermios *); 2076f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *); 208d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Coxstatic void moxa_shut_down(struct tty_struct *); 20931f35939d1d9bcfb3099b32c67b896d2792603f9Alan Coxstatic int moxa_carrier_raised(struct tty_port *); 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa board interface functions: 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 213b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *); 214b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *); 215b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); 216b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *, int *, int *); 217b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *, int, int); 218b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); 219b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *); 220b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *, int); 221d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Coxstatic int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); 2227bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *); 223b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *); 224b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *); 225b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *); 226b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *); 227b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *); 2288f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); 2298f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); 230b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable); 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 23374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * I/O functions 23474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 23574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 23674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_wait_finish(void __iomem *ofsAddr) 23774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 23874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned long end = jiffies + moxaFuncTout; 23974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 24074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby while (readw(ofsAddr + FuncCode) != 0) 24174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (time_after(jiffies, end)) 24274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return; 24374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) 24474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby printk(KERN_WARNING "moxa function expired\n"); 24574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 24674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 247eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slabystatic void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) 24874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 24974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(arg, ofsAddr + FuncArg); 25074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(cmd, ofsAddr + FuncCode); 25174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxa_wait_finish(ofsAddr); 25274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 25374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 2547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_low_water_check(void __iomem *ofsAddr) 2557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 2567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 rptr, wptr, mask, len; 2577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 2587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 2597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby rptr = readw(ofsAddr + RXrptr); 2607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby wptr = readw(ofsAddr + RXwptr); 2617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby mask = readw(ofsAddr + RX_mask); 2627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby len = (wptr - rptr) & mask; 2637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (len <= Low_water) 2647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxafunc(ofsAddr, FC_SendXon, 0); 2657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 2667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 2677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 26874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 26974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * TTY operations 27074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 27174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 27274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic int moxa_ioctl(struct tty_struct *tty, struct file *file, 27374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int cmd, unsigned long arg) 27474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 27574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *ch = tty->driver_data; 27674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby void __user *argp = (void __user *)arg; 277a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int status, ret = 0; 27874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 27974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (tty->index == MAX_PORTS) { 28074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && 28174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby cmd != MOXA_GETMSTATUS) 28274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 28374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } else if (!ch) 28474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -ENODEV; 28574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 28674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby switch (cmd) { 28774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETDATACOUNT: 28874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxaLog.tick = jiffies; 289a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) 290a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -EFAULT; 291a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_FLUSH_QUEUE: 29374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby MoxaPortFlushData(ch, arg); 294a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IOQUEUE: { 29674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str __user *argm = argp; 29774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str tmp; 29874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 29974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 30074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 301a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 30274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 30374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 30474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 30574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 30674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (moxa_boards[i].ready) { 30774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.inq = MoxaPortRxQueue(p); 30874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.outq = MoxaPortTxQueue(p); 30974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 310a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 311a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 31274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 313a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 31474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 31574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 316a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 317a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 31874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } case MOXA_GET_OQUEUE: 31974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortTxQueue(ch); 320a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 321a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IQUEUE: 32374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortRxQueue(ch); 324a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 325a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETMSTATUS: { 32774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus __user *argm = argp; 32874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus tmp; 32974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 33074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 33174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 332a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 33374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 33474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 33574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 336d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct tty_struct *ttyp; 33774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 33874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!moxa_boards[i].ready) 33974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby goto copy; 34074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 34174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortLineStatus(p); 34274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 1) 34374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cts = 1; 34474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 2) 34574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dsr = 1; 34674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 4) 34774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dcd = 1; 34874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 349d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox ttyp = tty_port_tty_get(&p->port); 350d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (!ttyp || !ttyp->termios) 35174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->cflag; 35274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby else 353d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tmp.cflag = ttyp->termios->c_cflag; 354d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_kref_put(tty); 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 3819e98966c7bb94355689478bc84cc3e0c190f977eAlan Coxstatic int 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); 3879e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return 0; 38874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 38974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 390b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations moxa_ops = { 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = moxa_open, 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = moxa_close, 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = moxa_write, 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = moxa_write_room, 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = moxa_flush_buffer, 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = moxa_chars_in_buffer, 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = moxa_ioctl, 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = moxa_throttle, 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = moxa_unthrottle, 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = moxa_set_termios, 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = moxa_stop, 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = moxa_start, 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = moxa_hangup, 40474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby .break_ctl = moxa_break_ctl, 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = moxa_tiocmget, 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = moxa_tiocmset, 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40931f35939d1d9bcfb3099b32c67b896d2792603f9Alan Coxstatic const struct tty_port_operations moxa_port_ops = { 41031f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox .carrier_raised = moxa_carrier_raised, 41131f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox}; 41231f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox 413aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic struct tty_driver *moxaDriver; 414aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); 41534af946a22724c4e2b204957f2b24b22a0fb121cIngo Molnarstatic DEFINE_SPINLOCK(moxa_lock); 41633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 41774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 41874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * HW init 41974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 42074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 421037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) 422037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 423037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 424037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 425037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 426037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 1) 427037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 428037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 429037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 430037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 3) 431037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 432037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 433037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 434037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 2) 435037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 436037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 437037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 438037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 439037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 440037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 441037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 442037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 443037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw(const void *ptr) 444037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 445037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const __le16 *lptr = ptr; 446037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 447037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (*lptr != cpu_to_le16(0x7980)) 448037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 449037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 450037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 451037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 452037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 453037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, 454037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 455037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 456037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 457037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 tmp; 458037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 459037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(HW_reset, baseAddr + Control_reg); /* reset */ 460037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 461037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memset_io(baseAddr, 0, 4096); 462037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr, buf, len); /* download BIOS */ 463037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(0, baseAddr + Control_reg); /* restart */ 464037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 465037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(2000); 466037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 467037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 468037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 469037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 470037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 471037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C218_KeyCode) 472037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 473037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 474037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 475037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 476037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != CP204J_KeyCode) 477037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 478037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 479037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 480037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_key); 481037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C320_KeyCode) 482037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 483037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_status); 484037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != STS_init) { 485eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " 486037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "module not found\n"); 487037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 488037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 489037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 490037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 491037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 492037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 493037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 494eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); 495037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 496037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 497037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 498037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, 499037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 500037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 501037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 502037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 503037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len < 7168) { 504eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); 505037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 506037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 507037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 508037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(len - 7168 - 2, baseAddr + C320bapi_len); 509037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(1, baseAddr + Control_reg); /* Select Page 1 */ 510037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); 511037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(2, baseAddr + Control_reg); /* Select Page 2 */ 512037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); 513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 515037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 516037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slabystatic int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, 518037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 519037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 520037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 521b46f69cd24b9020433f8f153e7d9194b5bfdf5e2Harvey Harrison const __le16 *uptr = ptr; 522037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t wlen, len2, j; 5235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned long key, loadbuf, loadlen, checksum, checksum_ok; 52408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int i, retry; 525037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 usum, keycode; 526037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5275292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : 5285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby C218_KeyCode; 529037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby switch (brd->boardType) { 5315292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_CP204J: 5325292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_ISA: 5335292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_PCI: 5345292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C218_key; 5355292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C218_LoadBuf; 5365292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C218DLoad_len; 5375292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C218check_sum; 5385292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C218chksum_ok; 5395292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 5405292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby default: 5415292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C320_key; 5425292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = C320_KeyCode; 5435292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C320_LoadBuf; 5445292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C320DLoad_len; 5455292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C320check_sum; 5465292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C320chksum_ok; 5475292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 548037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 549037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 550037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum = 0; 551037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 552037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < wlen; i++) 553037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum += le16_to_cpu(uptr[i]); 554037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry = 0; 555037182346f0991683cc7320a257c3f6089432ceeJiri Slaby do { 556037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 557037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j = 0; 558037182346f0991683cc7320a257c3f6089432ceeJiri Slaby while (wlen) { 559037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len2 = (wlen > 2048) ? 2048 : wlen; 560037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen -= len2; 5615292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); 562037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j += len2 << 1; 5635292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 5645292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(len2, baseAddr + loadlen); 5655292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5665292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5675292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 568037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 569037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 570037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5715292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) != keycode) 572037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 573037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5745292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + loadlen); 5755292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(usum, baseAddr + checksum); 5765292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5775292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5785292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 579037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 580037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 581037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 582037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry++; 5835292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); 5845292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readb(baseAddr + checksum_ok) != 1) 585037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 586037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5875292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 588037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 600; i++) { 589037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 590037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 591037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 592037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 593037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 594037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 595037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 59608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 5975292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ 5985292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3800, baseAddr + TMS320_PORT1); 5995292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3900, baseAddr + TMS320_PORT2); 6005292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(28499, baseAddr + TMS320_CLOCK); 6015292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } else { 6025292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3200, baseAddr + TMS320_PORT1); 6035292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3400, baseAddr + TMS320_PORT2); 6045292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(19999, baseAddr + TMS320_CLOCK); 6055292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 606037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 607037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(1, baseAddr + Disable_IRQ); 608037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(0, baseAddr + Magic_no); 609037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 500; i++) { 610037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 611037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 612037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 613037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 614037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 615037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 616037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 61708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 6185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby j = readw(baseAddr + Module_cnt); 6195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (j <= 0) 6205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 6215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->numPorts = j * 8; 6225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(j, baseAddr + Module_no); 6235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + Magic_no); 6245292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 600; i++) { 6255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 6265292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 6275292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby msleep(10); 6285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 6295292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 6305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 631037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 632037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intNdx = baseAddr + IRQindex; 633037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intPend = baseAddr + IRQpending; 634037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intTable = baseAddr + IRQtable; 635037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 636037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 637037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 638037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 639037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, 640037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 641037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 642037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *ofsAddr, *baseAddr = brd->basemem; 643037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *port; 644037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int retval, i; 645037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 646037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len % 2) { 647eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios length is not even\n"); 648037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 649037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 650037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 6515292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ 6525292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (retval) 6535292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return retval; 6545292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 655037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 656037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 659037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 660037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 661b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 662037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 663037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 664037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 665037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 666037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_mask, ofsAddr + RX_mask); 667037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_mask, ofsAddr + TX_mask); 668037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); 669037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); 670037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 671037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); 672037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); 673037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 674037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 675037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 676037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 677037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 678037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 679b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 680037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 681037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 682037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 683037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 684037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->numPorts) { 685037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 8: 686037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_mask, ofsAddr + RX_mask); 687037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_mask, ofsAddr + TX_mask); 688037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); 689037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); 690037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); 691037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); 692037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 693037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 694037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 16: 695037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_mask, ofsAddr + RX_mask); 696037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_mask, ofsAddr + TX_mask); 697037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); 698037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); 699037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); 700037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); 701037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 702037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 703037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 24: 704037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_mask, ofsAddr + RX_mask); 705037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_mask, ofsAddr + TX_mask); 706037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); 707037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); 708037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); 709037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 710037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 711037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 32: 712037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_mask, ofsAddr + RX_mask); 713037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_mask, ofsAddr + TX_mask); 714037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_ofs, ofsAddr + Ofs_txb); 715037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); 716037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); 717037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); 718037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 719037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 720037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 721037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 722037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 723037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 724037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 725037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 726037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 727037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) 728037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 7292bca76e89bc43f86136080536858048ebffab3e3David Howells const void *ptr = fw->data; 730037182346f0991683cc7320a257c3f6089432ceeJiri Slaby char rsn[64]; 731037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 lens[5]; 732037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len; 733037182346f0991683cc7320a257c3f6089432ceeJiri Slaby unsigned int a, lenp, lencnt; 734037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret = -EINVAL; 735037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct { 736037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le32 magic; /* 0x34303430 */ 737037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved1[2]; 738037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 type; /* UNIX = 3 */ 739037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 model; /* C218T=1, C320T=2, CP204=3 */ 740037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved2[8]; 741037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le16 len[5]; 7422bca76e89bc43f86136080536858048ebffab3e3David Howells } const *hdr = ptr; 743037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 744037182346f0991683cc7320a257c3f6089432ceeJiri Slaby BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); 745037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 746037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (fw->size < MOXA_FW_HDRLEN) { 747037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "too short (even header won't fit)"); 748037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 749037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 750037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->magic != cpu_to_le32(0x30343034)) { 751037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); 752037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 753037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 754037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->type != 3) { 755037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for linux, type is %u", hdr->type); 756037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 757037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 758037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_check_fw_model(brd, hdr->model)) { 759037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for this card, model is %u", hdr->model); 760037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 761037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 762037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 763037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len = MOXA_FW_HDRLEN; 764037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lencnt = hdr->model == 2 ? 5 : 3; 765037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (a = 0; a < ARRAY_SIZE(lens); a++) { 766037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lens[a] = le16_to_cpu(hdr->len[a]); 767037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (lens[a] && len + lens[a] <= fw->size && 768037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxa_check_fw(&fw->data[len])) 769eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_WARNING "MOXA firmware: unexpected input " 770037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "at offset %u, but going on\n", (u32)len); 771037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!lens[a] && a < lencnt) { 772037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "too few entries in fw file"); 773037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 774037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 775037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len += lens[a]; 776037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 777037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 778037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len != fw->size) { 779037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, 780037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (u32)len); 781037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 782037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 783037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 784037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += MOXA_FW_HDRLEN; 785037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp = 0; /* bios */ 786037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 787037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "read above"); 788037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 789037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_bios(brd, ptr, lens[lenp]); 790037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 791037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 792037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 793037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* we skip the tty section (lens[1]), since we don't need it */ 794037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 795037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; /* comm */ 796037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 797037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->model == 2) { 798037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_320b(brd, ptr, lens[lenp]); 799037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 800037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 801037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* skip another tty */ 802037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 803037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; 804037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 805037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 806037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_code(brd, ptr, lens[lenp]); 807037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 808037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 809037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 810037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 811037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 812037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); 813037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 814037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 815037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 816037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) 817037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 818037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const struct firmware *fw; 819037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const char *file; 820810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_port *p; 821810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 822037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret; 823037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 824810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), 825810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby GFP_KERNEL); 826810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (brd->ports == NULL) { 827810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby printk(KERN_ERR "cannot allocate memory for ports\n"); 828810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ret = -ENOMEM; 829810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err; 830810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 831810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 832810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { 83344b7d1b37f786c61d0e382b6f72f605f73de284bAlan Cox tty_port_init(&p->port); 83431f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox p->port.ops = &moxa_port_ops; 835810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->type = PORT_16550A; 836810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 837810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 838810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 839037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 840037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 841037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 842037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c218tunx.cod"; 843037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 844037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 845037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "cp204unx.cod"; 846037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 847037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 848037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c320tunx.cod"; 849037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 850037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 851037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 852037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = request_firmware(&fw, file, dev); 853037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) { 854ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby printk(KERN_ERR "MOXA: request_firmware failed. Make sure " 855ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "you've placed '%s' file into your firmware " 856ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "loader directory (e.g. /lib/firmware)\n", 857ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby file); 858810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 859037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 860037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 861037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_fw(brd, fw); 862037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 863037182346f0991683cc7320a257c3f6089432ceeJiri Slaby release_firmware(fw); 864810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 865810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (ret) 866810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 867810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 8682a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_lock_bh(&moxa_lock); 869810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 1; 8700bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby if (!timer_pending(&moxaTimer)) 8710bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 8722a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock_bh(&moxa_lock); 8730bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 874810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return 0; 875810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr_free: 876810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 877810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr: 878037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 879037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 880037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 881810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabystatic void moxa_board_deinit(struct moxa_board_conf *brd) 882810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby{ 883a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int a, opened; 884a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 885a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 8867bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 887810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 0; 8887bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 889a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 890a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby /* pci hot-un-plug support */ 891a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 892d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { 893d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct tty_struct *tty = tty_port_tty_get( 894d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox &brd->ports[a].port); 895d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (tty) { 896d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_hangup(tty); 897d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_kref_put(tty); 898d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox } 899d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox } 900a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 901a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened = 0; 902a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 9039de6a51fee08f9e7020074738150441305e83af2Alan Cox if (brd->ports[a].port.flags & ASYNC_INITIALIZED) 904a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened++; 905a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 906a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!opened) 907a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 908a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby msleep(50); 909a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 910a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 911a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 912810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby iounmap(brd->basemem); 913810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->basemem = NULL; 914810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 915810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby} 916810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 9189cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic int __devinit moxa_pci_probe(struct pci_dev *pdev, 9199cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby const struct pci_device_id *ent) 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9219cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *board; 9229cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby unsigned int i; 9239cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int board_type = ent->driver_data; 9249cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int retval; 9259cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9269cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = pci_enable_device(pdev); 9277aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (retval) { 9287aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't enable pci device\n"); 9299cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9307aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9319cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9329cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby for (i = 0; i < MAX_BOARDS; i++) 9339cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (moxa_boards[i].basemem == NULL) 9349cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby break; 9359cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9369cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = -ENODEV; 9379cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (i >= MAX_BOARDS) { 9387aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " 9399cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby "found. Board is ignored.\n", MAX_BOARDS); 9409cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9419cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby } 9429cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9439cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby board = &moxa_boards[i]; 944e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 945e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby retval = pci_request_region(pdev, 2, "moxa-base"); 946e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby if (retval) { 947e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby dev_err(&pdev->dev, "can't request pci region 2\n"); 948e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err; 949e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby } 950e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 95124cb233520f01971d6d873cb52c64bbbb0665ac0Alan Cox board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); 9527aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (board->basemem == NULL) { 9537aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't remap io space 2\n"); 954e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err_reg; 9557aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9569cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->boardType = board_type; 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (board_type) { 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_ISA: 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_PCI: 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 8; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_CP204J: 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 4; 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 0; 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->busType = MOXA_BUS_TYPE_PCI; 972a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 973037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retval = moxa_init_board(board, &pdev->dev); 974037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (retval) 975037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err_base; 976037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 9779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby pci_set_drvdata(pdev, board); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 979bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", 980bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby moxa_brdname[board_type - 1], board->numPorts); 981bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 982eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 983037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 984037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 985037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 986e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 987e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9889cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 9899cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 9909cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 9919cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9929cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 9939cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 9949cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 9959cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 996810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(brd); 997810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 998e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1000a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1001a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 1002a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 1003a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 1004a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 1005a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 1006a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1011810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int isabrds = 0; 1012d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10147aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 10157aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 10219b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 1028606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 1029606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 1034eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1039d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 1041d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 1042d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 1043810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 1045d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 1046d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 1047d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 1048d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 10497aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 1050d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 1051d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 1052d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 1053d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 1054d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 1055d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 105624cb233520f01971d6d873cb52c64bbbb0665ac0Alan Cox brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); 1057d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 1058eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: can't remap %lx\n", 1059d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1062037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 1063037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 1064037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 1065037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 1066037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1067d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 1068bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " 1069bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby "ready (%u ports, firmware loaded)\n", 1070bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby baseaddr[i], brd->numPorts); 1071bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 1072d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 1073d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1076d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1078a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 1080a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 1081a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 1082eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "Can't register MOXA pci driver!\n"); 1083d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 1084a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1087a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1088a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1093eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby unsigned int i; 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10959cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 1096a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 10979cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 1098a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1099810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ 1100810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (moxa_boards[i].ready) 1101810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(&moxa_boards[i]); 11022a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 11032a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby del_timer_sync(&moxaTimer); 11042a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 11052a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (tty_unregister_driver(moxaDriver)) 11062a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 11072a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby "serial driver\n"); 11082a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby put_tty_driver(moxaDriver); 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1114d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Coxstatic void moxa_close_port(struct tty_struct *tty) 1115a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1116d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct moxa_port *ch = tty->driver_data; 1117d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox moxa_shut_down(tty); 1118a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaPortFlushData(ch, 2); 11199de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags &= ~ASYNC_NORMAL_ACTIVE; 1120d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty->driver_data = NULL; 1121d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_port_tty_set(&ch->port, NULL); 1122a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1123a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 112431f35939d1d9bcfb3099b32c67b896d2792603f9Alan Coxstatic int moxa_carrier_raised(struct tty_port *port) 112531f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox{ 112631f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox struct moxa_port *ch = container_of(port, struct moxa_port, port); 112731f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox int dcd; 112831f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox 112931f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox spin_lock_bh(&moxa_lock); 113031f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox dcd = ch->DCDState; 113131f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox spin_unlock_bh(&moxa_lock); 113231f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox return dcd; 113331f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox} 113431f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox 1135a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 1136a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch) 1137a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 113831f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox struct tty_port *port = &ch->port; 1139a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby DEFINE_WAIT(wait); 1140a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int retval = 0; 1141a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby u8 dcd; 1142a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1143a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 114431f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE); 1145a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty_hung_up_p(filp)) { 1146a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#ifdef SERIAL_DO_RESTART 1147a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1148a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#else 1149a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -EAGAIN; 1150a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#endif 1151a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1152a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 115331f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox dcd = tty_port_carrier_raised(port); 1154a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (dcd) 1155a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1156a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1157a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (signal_pending(current)) { 1158a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1159a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1160a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1161a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby schedule(); 1162a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 116331f35939d1d9bcfb3099b32c67b896d2792603f9Alan Cox finish_wait(&port->open_wait, &wait); 1164a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1165a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 1166a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1167a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1170810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_board_conf *brd; 11718f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 117511324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 117774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1179a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (mutex_lock_interruptible(&moxa_openlock)) 1180a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return -ERESTARTSYS; 1181810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; 1182a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!brd->ready) { 1183a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1184810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return -ENODEV; 1185a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1187810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; 11889de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count++; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 1190d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_port_tty_set(&ch->port, tty); 11919de6a51fee08f9e7020074738150441305e83af2Alan Cox if (!(ch->port.flags & ASYNC_INITIALIZED)) { 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 1193db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 1194b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 1195b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 1196a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaSetFifo(ch, ch->type == PORT_16550A); 11979de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags |= ASYNC_INITIALIZED; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1199a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = 0; 1202a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) 1203a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 1204a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1205a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (retval) { 12069de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.count) /* 0 means already hung up... */ 12079de6a51fee08f9e7020074738150441305e83af2Alan Cox if (--ch->port.count == 0) 1208d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox moxa_close_port(tty); 1209a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } else 12109de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags |= ASYNC_NORMAL_ACTIVE; 1211a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1213a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12188f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 122111324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1222a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (port == MAX_PORTS || tty_hung_up_p(filp)) 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1225a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1226a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1227a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) 1228a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12299de6a51fee08f9e7020074738150441305e83af2Alan Cox if (tty->count == 1 && ch->port.count != 1) { 12307aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 12319de6a51fee08f9e7020074738150441305e83af2Alan Cox "tty->count is 1, ch->port.count is %d\n", ch->port.count); 12329de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 1; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12349de6a51fee08f9e7020074738150441305e83af2Alan Cox if (--ch->port.count < 0) { 12357aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 12367aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 12379de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 0; 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12399de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.count) 1240a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 12439de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.flags & ASYNC_INITIALIZED) { 12446f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1248d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox moxa_close_port(tty); 1249a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabyunlock: 1250a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1256b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 1257b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1260b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 126133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 12627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 1263d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox len = MoxaPortWriteData(tty, buf, count); 12647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 1267eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return len; 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12728f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 1275eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1276b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1278eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1279b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1284b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1288b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1294b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1304eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1305978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox lock_kernel(); 1306b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 13136f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1315978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox unlock_kernel(); 1316eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return chars; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1321a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1324a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1325a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1326a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1327a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 132874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1329a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1336b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 1343a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1350a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 135411324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1355a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1356a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1357a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1358a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 135974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1360a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1362b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1371b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 1372a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *tty) 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1378eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= THROTTLE; 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *tty) 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1385eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1391eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct ktermios *old_termios) 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1393eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1397db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 1398eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) 13999de6a51fee08f9e7020074738150441305e83af2Alan Cox wake_up_interruptible(&ch->port.open_wait); 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1404eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1408b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1415eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1423b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1429a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1431a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1432a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1433a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) { 1434a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1435a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return; 1436a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 14379de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 0; 1438d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox moxa_close_port(tty); 1439a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1440a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 14419de6a51fee08f9e7020074738150441305e83af2Alan Cox wake_up_interruptible(&ch->port.open_wait); 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1446d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct tty_struct *tty; 14477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby dcd = !!dcd; 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1449d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (dcd != p->DCDState) { 1450d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty = tty_port_tty_get(&p->port); 1451d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (tty && C_CLOCAL(tty) && !dcd) 1452d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_hangup(tty); 1453d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox tty_kref_put(tty); 14547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->DCDState = dcd; 14567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int moxa_poll_port(struct moxa_port *p, unsigned int handle, 14597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip) 14607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 1461d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct tty_struct *tty = tty_port_tty_get(&p->port); 14627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *ofsAddr; 14639de6a51fee08f9e7020074738150441305e83af2Alan Cox unsigned int inited = p->port.flags & ASYNC_INITIALIZED; 14647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 intr; 14657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty) { 14677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & EMPTYWAIT) && 14687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) == 0) { 14697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14717bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14727bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & LOWWAIT) && !tty->stopped && 14737bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) <= WAKEUP_CHARS) { 14747bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~LOWWAIT; 14757bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14767bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (inited && !(p->statusflags & THROTTLE) && 14797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortRxQueue(p) > 0) { /* RX */ 14807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortReadData(p); 14817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14827bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } else { 14847bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14857bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortFlushData(p, 0); /* flush RX */ 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14870bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 14887bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!handle) /* nothing else to do */ 14890e0fd7d73ed130583dca16405b029f56bf65109fJiri Slaby goto put; 14907bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14917bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby intr = readw(ip); /* port irq status */ 14927bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr == 0) 14930e0fd7d73ed130583dca16405b029f56bf65109fJiri Slaby goto put; 14947bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14957bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(0, ip); /* ACK port */ 14967bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr = p->tableAddr; 14977bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrTx) /* disable tx intr */ 14987bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(readw(ofsAddr + HostStat) & ~WakeupTx, 14997bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr + HostStat); 15007bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15017bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!inited) 15020e0fd7d73ed130583dca16405b029f56bf65109fJiri Slaby goto put; 15037bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15047bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 15057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_insert_flip_char(tty, 0, TTY_BREAK); 15067bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 15077bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 15087bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15097bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrLine) 15107bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 15110e0fd7d73ed130583dca16405b029f56bf65109fJiri Slabyput: 15120e0fd7d73ed130583dca16405b029f56bf65109fJiri Slaby tty_kref_put(tty); 15137bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15147bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 15157bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 15167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15177bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_poll(unsigned long ignored) 15187bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 15197bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_board_conf *brd; 15207bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip; 15212a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby unsigned int card, port, served = 0; 15227bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15237bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock(&moxa_lock); 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 15257bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby brd = &moxa_boards[card]; 15267bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!brd->ready) 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15287bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15292a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby served++; 15302a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 15317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = NULL; 15327bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(brd->intPend) == 0xff) 15337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 15347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++) 15367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_poll_port(&brd->ports[port], !!ip, ip + port); 15377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (ip) 15397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writeb(0, brd->intPend); /* ACK */ 15407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (moxaLowWaterChk) { 15427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_port *p = brd->ports; 15437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++, p++) 15447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (p->lowChkFlag) { 15457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->lowChkFlag = 0; 15467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_low_water_check(p->tableAddr); 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15507bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLowWaterChk = 0; 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15522a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (served) 15532a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 15542a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock(&moxa_lock); 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1559db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1561eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby register struct ktermios *ts = tty->termios; 1562eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 1563db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1574db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1575db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1576db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1577b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1578b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1579db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1580db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1581db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1582db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15856f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15878f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15897bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 15917bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1594d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Coxstatic void moxa_shut_down(struct tty_struct *tty) 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1596d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct moxa_port *ch = tty->driver_data; 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15989de6a51fee08f9e7020074738150441305e83af2Alan Cox if (!(ch->port.flags & ASYNC_INITIALIZED)) 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1606d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox if (C_HUPCL(tty)) 1607b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1609a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 16109de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags &= ~ASYNC_INITIALIZED; 1611a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1618b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1621eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (mode < 0 || mode > 2) 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1623b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1626b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 16276f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 168108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby * speed_t MoxaPortSetBaud(int port, speed_t baud); 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1694606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1696606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1697c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 177033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 177233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1823b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1826eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u16 lowwater = 512; 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1828b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 183008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 1832eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby else 1833eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby writew(readw(ofsAddr + HostStat) | WakeupBreak, 1834eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby ofsAddr + HostStat); 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1843b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1845b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 185308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slabystatic speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 185508d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 185608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int clock, val; 185708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby speed_t max; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 185908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby max = MOXA_IS_320(port->board) ? 460800 : 921600; 186008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (baud < 50) 1861eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 186408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby clock = 921600; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 1868eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1871b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 1872b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1878b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1907eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 190908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board) && baud >= 921600) 191008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby return -1; 191108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 1912db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 19186f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1921eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1924b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 1925b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1927b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 1928b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 1929b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 1930b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 1931b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 1932eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1935b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1937eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u8 mode = 0; 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 1943b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 1944b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1947b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 1948b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1950b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 1962b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1965b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1970b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 197108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) { 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 19787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (val & 8) 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 1980a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 19817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(port, val & 8); 1982a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 19847bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return val; 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1987d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Coxstatic int MoxaPortWriteData(struct tty_struct *tty, 19882108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby const unsigned char *buffer, int len) 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1990d450b5a0196b6442cf3f29fc611d9c8daa56b559Alan Cox struct moxa_port *port = tty->driver_data; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 19922108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int c, total; 19932108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 head, tail, tx_mask, spage, epage; 19942108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead; 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1996b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 1997b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 20032108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 20069de6a51fee08f9e7020074738150441305e83af2Alan Cox moxaLog.txcnt[port->port.tty->index] += c; 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 20182108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 20192108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 20262108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (c > 0) { 20272108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = Page_size - pageofs; 20282108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (len > c) 20292108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = c; 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20322108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 20332108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 20372108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c -= len; 20382108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20392108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby tail = (tail + total) & tx_mask; 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20412108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(tail, ofsAddr + TXwptr); 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 20432108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port) 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20489de6a51fee08f9e7020074738150441305e83af2Alan Cox struct tty_struct *tty = port->port.tty; 20492108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned char *dst; 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 20512108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int count, len, total; 20522108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 tail, rx_mask, spage, epage; 20532108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead, head; 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2055b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2056b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 20622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 206433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 206633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 20677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLog.rxcnt[tty->index] += total; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 20732108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = (tail >= head) ? (tail - head) : 20742108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby (rx_mask + 1 - head); 20752108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20762108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(len, count)); 20772108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 20842108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (count > 0) { 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20872108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20882108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(Page_size - pageofs, count)); 20892108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20902108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby 20912108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count -= len; 20922108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby pageofs = (pageofs + len) & Page_mask; 20932108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (pageofs == 0 && ++pageno == epage) 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20952108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby head = (head + total) & rx_mask; 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(head, ofsAddr + RXrptr); 20992108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2101b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21032108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2107b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2109b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21102108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 21152108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2118b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2120b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21212108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 21262108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return mask - ((wptr - rptr) & mask); 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2129b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2131b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21322108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 21372108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2140b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2142b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2145b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2147b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21508f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 2151eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *retinfo) 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2153eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct tmp = { 2154eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .type = info->type, 21559de6a51fee08f9e7020074738150441305e83af2Alan Cox .line = info->port.tty->index, 21569de6a51fee08f9e7020074738150441305e83af2Alan Cox .flags = info->port.flags, 2157eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .baud_base = 921600, 215844b7d1b37f786c61d0e382b6f72f605f73de284bAlan Cox .close_delay = info->port.close_delay 2159eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby }; 2160eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21648f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 2165eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *new_info) 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2169eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2172eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (new_serial.irq != 0 || new_serial.port != 0 || 2173eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.custom_divisor != 0 || 2174eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.baud_base != 921600) 2175eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 21799de6a51fee08f9e7020074738150441305e83af2Alan Cox (info->port.flags & ~ASYNC_USR_MASK))) 2180eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 2181eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby } else 218244b7d1b37f786c61d0e382b6f72f605f73de284bAlan Cox info->port.close_delay = new_serial.close_delay * HZ / 100; 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 21859de6a51fee08f9e7020074738150441305e83af2Alan Cox new_serial.flags |= (info->port.flags & ASYNC_FLAGS); 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2187eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby MoxaSetFifo(info, new_serial.type == PORT_16550A); 21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 2190eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2199b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2201b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 22041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 22061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 22071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 22091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2211