moxa.c revision 9de6a51fee08f9e7020074738150441305e83af2
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 close_delay; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cflag; 1407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned long statusflags; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 DCDState; 1437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lineCtrl; 1447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lowChkFlag; 1458f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystruct mon_str { 14874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int tick; 14974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int rxcnt[MAX_PORTS]; 15074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int txcnt[MAX_PORTS]; 15174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby}; 15274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* statusflags */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXSTOPPED 0x1 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LOWWAIT 0x2 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EMPTYWAIT 0x4 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define THROTTLE 0x8 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SERIAL_DO_RESTART 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor = MOXAMAJOR; 16474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic struct mon_str moxaLog; 16574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic unsigned int moxaFuncTout = HZ / 2; 1667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic unsigned int moxaLowWaterChk; 167a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic DEFINE_MUTEX(moxa_openlock); 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for insmod */ 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 170d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned long baseaddr[MAX_BOARDS]; 171d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int type[MAX_BOARDS]; 172d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int numports[MAX_BOARDS]; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("William Chen"); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 179d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(type, uint, NULL, 0); 180d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(type, "card type: C218=2, C320=4"); 181d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(baseaddr, ulong, NULL, 0); 182d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(baseaddr, "base address"); 183d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(numports, uint, NULL, 0); 184d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(numports, "numports (ignored for C218)"); 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * static functions: 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *, struct file *); 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *, struct file *); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *, const unsigned char *, int); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *); 199606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void moxa_set_termios(struct tty_struct *, struct ktermios *); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long); 207db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *, struct ktermios *); 2086f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *); 2096f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_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); 2212108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *, 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++) { 33674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 33774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!moxa_boards[i].ready) 33874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby goto copy; 33974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 34074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortLineStatus(p); 34174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 1) 34274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cts = 1; 34374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 2) 34474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dsr = 1; 34574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 4) 34674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dcd = 1; 34774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 3489de6a51fee08f9e7020074738150441305e83af2Alan Cox if (!p->port.tty || !p->port.tty->termios) 34974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->cflag; 35074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby else 3519de6a51fee08f9e7020074738150441305e83af2Alan Cox tmp.cflag = p->port.tty->termios->c_cflag; 35274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabycopy: 353a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 354a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 35574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 356a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 35774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 35874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 359a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 360a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 36174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 36274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCGSERIAL: 363a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 364a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_get_serial_info(ch, argp); 365a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 366a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 36774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCSSERIAL: 368a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 369a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_set_serial_info(ch, argp); 370a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 371a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 372a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby default: 373a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -ENOIOCTLCMD; 37474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 375a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return ret; 37674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 37774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 37874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_break_ctl(struct tty_struct *tty, int state) 37974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 38074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *port = tty->driver_data; 38174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 38274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, 38374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby Magic_code); 38474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 38574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 386b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations moxa_ops = { 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = moxa_open, 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = moxa_close, 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = moxa_write, 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = moxa_write_room, 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = moxa_flush_buffer, 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = moxa_chars_in_buffer, 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = moxa_ioctl, 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = moxa_throttle, 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = moxa_unthrottle, 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = moxa_set_termios, 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = moxa_stop, 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = moxa_start, 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = moxa_hangup, 40074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby .break_ctl = moxa_break_ctl, 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = moxa_tiocmget, 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = moxa_tiocmset, 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 405aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic struct tty_driver *moxaDriver; 406aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); 40734af946a22724c4e2b204957f2b24b22a0fb121cIngo Molnarstatic DEFINE_SPINLOCK(moxa_lock); 40833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 40974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 41074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * HW init 41174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 41274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 413037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) 414037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 415037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 416037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 417037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 418037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 1) 419037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 420037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 421037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 422037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 3) 423037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 424037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 425037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 426037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 2) 427037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 428037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 429037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 430037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 431037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 432037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 433037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 434037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 435037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw(const void *ptr) 436037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 437037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const __le16 *lptr = ptr; 438037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 439037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (*lptr != cpu_to_le16(0x7980)) 440037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 441037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 442037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 443037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 444037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 445037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, 446037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 447037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 448037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 449037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 tmp; 450037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 451037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(HW_reset, baseAddr + Control_reg); /* reset */ 452037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 453037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memset_io(baseAddr, 0, 4096); 454037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr, buf, len); /* download BIOS */ 455037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(0, baseAddr + Control_reg); /* restart */ 456037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 457037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(2000); 458037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 459037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 460037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 461037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 462037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 463037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C218_KeyCode) 464037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 465037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 466037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 467037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 468037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != CP204J_KeyCode) 469037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 470037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 471037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 472037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_key); 473037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C320_KeyCode) 474037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 475037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_status); 476037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != STS_init) { 477eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " 478037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "module not found\n"); 479037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 480037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 481037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 482037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 483037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 484037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 485037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 486eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); 487037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 488037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 489037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 490037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, 491037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 492037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 493037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 494037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 495037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len < 7168) { 496eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); 497037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 498037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 499037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 500037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(len - 7168 - 2, baseAddr + C320bapi_len); 501037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(1, baseAddr + Control_reg); /* Select Page 1 */ 502037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); 503037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(2, baseAddr + Control_reg); /* Select Page 2 */ 504037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); 505037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 506037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 507037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 508037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5095292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slabystatic int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, 510037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 511037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 512037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const u16 *uptr = ptr; 514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t wlen, len2, j; 5155292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned long key, loadbuf, loadlen, checksum, checksum_ok; 51608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int i, retry; 517037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 usum, keycode; 518037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : 5205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby C218_KeyCode; 521037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby switch (brd->boardType) { 5235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_CP204J: 5245292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_ISA: 5255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_PCI: 5265292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C218_key; 5275292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C218_LoadBuf; 5285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C218DLoad_len; 5295292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C218check_sum; 5305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C218chksum_ok; 5315292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 5325292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby default: 5335292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C320_key; 5345292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = C320_KeyCode; 5355292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C320_LoadBuf; 5365292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C320DLoad_len; 5375292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C320check_sum; 5385292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C320chksum_ok; 5395292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 540037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 541037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 542037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum = 0; 543037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 544037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < wlen; i++) 545037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum += le16_to_cpu(uptr[i]); 546037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry = 0; 547037182346f0991683cc7320a257c3f6089432ceeJiri Slaby do { 548037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 549037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j = 0; 550037182346f0991683cc7320a257c3f6089432ceeJiri Slaby while (wlen) { 551037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len2 = (wlen > 2048) ? 2048 : wlen; 552037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen -= len2; 5535292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); 554037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j += len2 << 1; 5555292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 5565292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(len2, baseAddr + loadlen); 5575292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5585292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5595292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 560037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 561037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 562037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5635292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) != keycode) 564037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 565037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5665292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + loadlen); 5675292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(usum, baseAddr + checksum); 5685292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5695292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5705292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 571037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 572037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 573037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 574037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry++; 5755292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); 5765292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readb(baseAddr + checksum_ok) != 1) 577037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 578037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5795292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 580037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 600; i++) { 581037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 582037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 583037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 584037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 585037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 586037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 587037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 58808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 5895292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ 5905292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3800, baseAddr + TMS320_PORT1); 5915292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3900, baseAddr + TMS320_PORT2); 5925292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(28499, baseAddr + TMS320_CLOCK); 5935292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } else { 5945292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3200, baseAddr + TMS320_PORT1); 5955292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3400, baseAddr + TMS320_PORT2); 5965292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(19999, baseAddr + TMS320_CLOCK); 5975292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 598037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 599037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(1, baseAddr + Disable_IRQ); 600037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(0, baseAddr + Magic_no); 601037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 500; i++) { 602037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 603037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 604037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 605037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 606037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 607037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 608037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 60908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 6105292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby j = readw(baseAddr + Module_cnt); 6115292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (j <= 0) 6125292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 6135292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->numPorts = j * 8; 6145292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(j, baseAddr + Module_no); 6155292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + Magic_no); 6165292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 600; i++) { 6175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 6185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 6195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby msleep(10); 6205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 6215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 6225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 623037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 624037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intNdx = baseAddr + IRQindex; 625037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intPend = baseAddr + IRQpending; 626037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intTable = baseAddr + IRQtable; 627037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 628037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 629037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 630037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 631037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, 632037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 633037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 634037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *ofsAddr, *baseAddr = brd->basemem; 635037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *port; 636037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int retval, i; 637037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 638037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len % 2) { 639eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios length is not even\n"); 640037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 641037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 642037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 6435292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ 6445292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (retval) 6455292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return retval; 6465292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 647037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 648037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 649037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 650037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 651037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 652037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 653b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 654037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 655037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 656037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_mask, ofsAddr + RX_mask); 659037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_mask, ofsAddr + TX_mask); 660037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); 661037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); 662037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 663037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); 664037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); 665037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 666037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 667037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 668037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 669037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 670037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 671b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 672037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 673037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 674037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 675037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 676037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->numPorts) { 677037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 8: 678037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_mask, ofsAddr + RX_mask); 679037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_mask, ofsAddr + TX_mask); 680037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); 681037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); 682037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); 683037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); 684037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 685037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 686037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 16: 687037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_mask, ofsAddr + RX_mask); 688037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_mask, ofsAddr + TX_mask); 689037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); 690037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); 691037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); 692037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); 693037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 694037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 695037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 24: 696037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_mask, ofsAddr + RX_mask); 697037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_mask, ofsAddr + TX_mask); 698037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); 699037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); 700037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); 701037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 702037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 703037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 32: 704037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_mask, ofsAddr + RX_mask); 705037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_mask, ofsAddr + TX_mask); 706037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_ofs, ofsAddr + Ofs_txb); 707037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); 708037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); 709037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); 710037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 711037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 712037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 713037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 714037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 715037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 716037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 717037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 718037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 719037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) 720037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 7212bca76e89bc43f86136080536858048ebffab3e3David Howells const void *ptr = fw->data; 722037182346f0991683cc7320a257c3f6089432ceeJiri Slaby char rsn[64]; 723037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 lens[5]; 724037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len; 725037182346f0991683cc7320a257c3f6089432ceeJiri Slaby unsigned int a, lenp, lencnt; 726037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret = -EINVAL; 727037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct { 728037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le32 magic; /* 0x34303430 */ 729037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved1[2]; 730037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 type; /* UNIX = 3 */ 731037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 model; /* C218T=1, C320T=2, CP204=3 */ 732037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved2[8]; 733037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le16 len[5]; 7342bca76e89bc43f86136080536858048ebffab3e3David Howells } const *hdr = ptr; 735037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 736037182346f0991683cc7320a257c3f6089432ceeJiri Slaby BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); 737037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 738037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (fw->size < MOXA_FW_HDRLEN) { 739037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "too short (even header won't fit)"); 740037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 741037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 742037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->magic != cpu_to_le32(0x30343034)) { 743037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); 744037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 745037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 746037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->type != 3) { 747037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for linux, type is %u", hdr->type); 748037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 749037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 750037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_check_fw_model(brd, hdr->model)) { 751037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for this card, model is %u", hdr->model); 752037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 753037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 754037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 755037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len = MOXA_FW_HDRLEN; 756037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lencnt = hdr->model == 2 ? 5 : 3; 757037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (a = 0; a < ARRAY_SIZE(lens); a++) { 758037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lens[a] = le16_to_cpu(hdr->len[a]); 759037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (lens[a] && len + lens[a] <= fw->size && 760037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxa_check_fw(&fw->data[len])) 761eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_WARNING "MOXA firmware: unexpected input " 762037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "at offset %u, but going on\n", (u32)len); 763037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!lens[a] && a < lencnt) { 764037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "too few entries in fw file"); 765037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 766037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 767037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len += lens[a]; 768037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 769037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 770037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len != fw->size) { 771037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, 772037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (u32)len); 773037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 774037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 775037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 776037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += MOXA_FW_HDRLEN; 777037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp = 0; /* bios */ 778037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 779037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "read above"); 780037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 781037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_bios(brd, ptr, lens[lenp]); 782037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 783037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 784037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 785037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* we skip the tty section (lens[1]), since we don't need it */ 786037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 787037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; /* comm */ 788037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 789037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->model == 2) { 790037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_320b(brd, ptr, lens[lenp]); 791037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 792037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 793037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* skip another tty */ 794037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 795037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; 796037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 797037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 798037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_code(brd, ptr, lens[lenp]); 799037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 800037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 801037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 802037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 803037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 804037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); 805037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 806037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 807037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 808037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) 809037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 810037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const struct firmware *fw; 811037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const char *file; 812810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_port *p; 813810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 814037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret; 815037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 816810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), 817810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby GFP_KERNEL); 818810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (brd->ports == NULL) { 819810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby printk(KERN_ERR "cannot allocate memory for ports\n"); 820810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ret = -ENOMEM; 821810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err; 822810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 823810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 824810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { 825810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->type = PORT_16550A; 826810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->close_delay = 5 * HZ / 10; 827810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 8289de6a51fee08f9e7020074738150441305e83af2Alan Cox tty_port_init(&p->port); 829810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 830810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 831037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 832037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 833037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 834037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c218tunx.cod"; 835037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 836037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 837037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "cp204unx.cod"; 838037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 839037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 840037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c320tunx.cod"; 841037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 842037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 843037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 844037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = request_firmware(&fw, file, dev); 845037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) { 846ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby printk(KERN_ERR "MOXA: request_firmware failed. Make sure " 847ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "you've placed '%s' file into your firmware " 848ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby "loader directory (e.g. /lib/firmware)\n", 849ec09cd562135158dcb8a6c08e5a9efa36febedb1Jiri Slaby file); 850810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 851037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 852037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 853037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_fw(brd, fw); 854037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 855037182346f0991683cc7320a257c3f6089432ceeJiri Slaby release_firmware(fw); 856810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 857810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (ret) 858810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 859810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 8602a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_lock_bh(&moxa_lock); 861810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 1; 8620bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby if (!timer_pending(&moxaTimer)) 8630bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 8642a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock_bh(&moxa_lock); 8650bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 866810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return 0; 867810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr_free: 868810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 869810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr: 870037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 871037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 872037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 873810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabystatic void moxa_board_deinit(struct moxa_board_conf *brd) 874810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby{ 875a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int a, opened; 876a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 877a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 8787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 879810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 0; 8807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 881a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 882a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby /* pci hot-un-plug support */ 883a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 8849de6a51fee08f9e7020074738150441305e83af2Alan Cox if (brd->ports[a].port.flags & ASYNC_INITIALIZED) 8859de6a51fee08f9e7020074738150441305e83af2Alan Cox tty_hangup(brd->ports[a].port.tty); 886a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 887a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened = 0; 888a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 8899de6a51fee08f9e7020074738150441305e83af2Alan Cox if (brd->ports[a].port.flags & ASYNC_INITIALIZED) 890a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened++; 891a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 892a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!opened) 893a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 894a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby msleep(50); 895a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 896a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 897a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 898810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby iounmap(brd->basemem); 899810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->basemem = NULL; 900810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 901810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby} 902810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 9049cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic int __devinit moxa_pci_probe(struct pci_dev *pdev, 9059cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby const struct pci_device_id *ent) 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9079cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *board; 9089cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby unsigned int i; 9099cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int board_type = ent->driver_data; 9109cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int retval; 9119cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9129cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = pci_enable_device(pdev); 9137aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (retval) { 9147aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't enable pci device\n"); 9159cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9167aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9179cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9189cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby for (i = 0; i < MAX_BOARDS; i++) 9199cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (moxa_boards[i].basemem == NULL) 9209cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby break; 9219cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9229cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = -ENODEV; 9239cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (i >= MAX_BOARDS) { 9247aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " 9259cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby "found. Board is ignored.\n", MAX_BOARDS); 9269cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9279cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby } 9289cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9299cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby board = &moxa_boards[i]; 930e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 931e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby retval = pci_request_region(pdev, 2, "moxa-base"); 932e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby if (retval) { 933e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby dev_err(&pdev->dev, "can't request pci region 2\n"); 934e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err; 935e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby } 936e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 93724cb233520f01971d6d873cb52c64bbbb0665ac0Alan Cox board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); 9387aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (board->basemem == NULL) { 9397aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't remap io space 2\n"); 940e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err_reg; 9417aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9429cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->boardType = board_type; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (board_type) { 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_ISA: 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_PCI: 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 8; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_CP204J: 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 4; 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 0; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->busType = MOXA_BUS_TYPE_PCI; 958a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 959037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retval = moxa_init_board(board, &pdev->dev); 960037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (retval) 961037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err_base; 962037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 9639cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby pci_set_drvdata(pdev, board); 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 965bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", 966bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby moxa_brdname[board_type - 1], board->numPorts); 967bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 968eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 969037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 970037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 971037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 972e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 973e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9749cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 9759cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 9769cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 9779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9789cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 9799cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 9809cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 9819cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 982810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(brd); 983810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 984e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 986a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 987a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 988a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 989a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 990a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 991a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 992a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 997810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int isabrds = 0; 998d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10007aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 10017aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 10079b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 1014606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 1015606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 1020eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1025d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 1027d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 1028d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 1029810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 1031d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 1032d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 1033d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 1034d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 10357aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 1036d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 1037d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 1038d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 1039d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 1040d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 1041d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 104224cb233520f01971d6d873cb52c64bbbb0665ac0Alan Cox brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); 1043d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 1044eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: can't remap %lx\n", 1045d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1048037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 1049037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 1050037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 1051037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 1052037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1053d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 1054bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " 1055bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby "ready (%u ports, firmware loaded)\n", 1056bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby baseaddr[i], brd->numPorts); 1057bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 1058d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 1059d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1062d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1064a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 1066a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 1067a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 1068eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "Can't register MOXA pci driver!\n"); 1069d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 1070a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1073a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1074a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1079eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby unsigned int i; 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10819cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 1082a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 10839cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 1084a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1085810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ 1086810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (moxa_boards[i].ready) 1087810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(&moxa_boards[i]); 10882a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10892a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby del_timer_sync(&moxaTimer); 10902a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10912a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (tty_unregister_driver(moxaDriver)) 10922a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 10932a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby "serial driver\n"); 10942a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby put_tty_driver(moxaDriver); 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1100a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic void moxa_close_port(struct moxa_port *ch) 1101a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1102a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_shut_down(ch); 1103a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaPortFlushData(ch, 2); 11049de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags &= ~ASYNC_NORMAL_ACTIVE; 11059de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.tty->driver_data = NULL; 11069de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.tty = NULL; 1107a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1108a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1109a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 1110a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch) 1111a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1112a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby DEFINE_WAIT(wait); 1113a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int retval = 0; 1114a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby u8 dcd; 1115a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1116a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 11179de6a51fee08f9e7020074738150441305e83af2Alan Cox prepare_to_wait(&ch->port.open_wait, &wait, TASK_INTERRUPTIBLE); 1118a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty_hung_up_p(filp)) { 1119a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#ifdef SERIAL_DO_RESTART 1120a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1121a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#else 1122a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -EAGAIN; 1123a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#endif 1124a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1125a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1126a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 1127a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby dcd = ch->DCDState; 1128a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 1129a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (dcd) 1130a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1131a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1132a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (signal_pending(current)) { 1133a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1134a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1135a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1136a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby schedule(); 1137a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11389de6a51fee08f9e7020074738150441305e83af2Alan Cox finish_wait(&ch->port.open_wait, &wait); 1139a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1140a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 1141a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1142a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1145810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_board_conf *brd; 11468f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 115011324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 115274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1154a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (mutex_lock_interruptible(&moxa_openlock)) 1155a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return -ERESTARTSYS; 1156810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; 1157a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!brd->ready) { 1158a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1159810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return -ENODEV; 1160a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1162810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; 11639de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count++; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 11659de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.tty = tty; 11669de6a51fee08f9e7020074738150441305e83af2Alan Cox if (!(ch->port.flags & ASYNC_INITIALIZED)) { 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 1168db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 1169b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 1170b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 1171a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaSetFifo(ch, ch->type == PORT_16550A); 11729de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags |= ASYNC_INITIALIZED; 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1174a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1176a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = 0; 1177a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) 1178a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 1179a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1180a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (retval) { 11819de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.count) /* 0 means already hung up... */ 11829de6a51fee08f9e7020074738150441305e83af2Alan Cox if (--ch->port.count == 0) 1183a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1184a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } else 11859de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags |= ASYNC_NORMAL_ACTIVE; 1186a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1188a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11938f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 119611324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1197a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (port == MAX_PORTS || tty_hung_up_p(filp)) 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1200a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1201a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1202a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) 1203a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12049de6a51fee08f9e7020074738150441305e83af2Alan Cox if (tty->count == 1 && ch->port.count != 1) { 12057aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 12069de6a51fee08f9e7020074738150441305e83af2Alan Cox "tty->count is 1, ch->port.count is %d\n", ch->port.count); 12079de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 1; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12099de6a51fee08f9e7020074738150441305e83af2Alan Cox if (--ch->port.count < 0) { 12107aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 12117aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 12129de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 0; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12149de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.count) 1215a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 12189de6a51fee08f9e7020074738150441305e83af2Alan Cox if (ch->port.flags & ASYNC_INITIALIZED) { 12196f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1223a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1224a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabyunlock: 1225a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1231b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 1232b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1235b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 123633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 12377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 12382108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = MoxaPortWriteData(ch, buf, count); 12397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 1242eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return len; 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12478f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 1250eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1251b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1253eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1254b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1259b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1263b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1269b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1279eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1280978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox lock_kernel(); 1281b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 12886f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1290978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox unlock_kernel(); 1291eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return chars; 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1296a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1299a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1300a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1301a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1302a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 130374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1304a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1306b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1311b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 1318a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1325a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 132911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1330a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1331a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1332a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1333a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 133474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1335a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1337b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1346b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 1347a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *tty) 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1353eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= THROTTLE; 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *tty) 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1360eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1366eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct ktermios *old_termios) 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1368eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1372db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 1373eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) 13749de6a51fee08f9e7020074738150441305e83af2Alan Cox wake_up_interruptible(&ch->port.open_wait); 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1379eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1383b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1390eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1398b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1404a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1406a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1407a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1408a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) { 1409a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1410a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return; 1411a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 14129de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.count = 0; 1413a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1414a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1415a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 14169de6a51fee08f9e7020074738150441305e83af2Alan Cox wake_up_interruptible(&ch->port.open_wait); 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14197bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14217bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby dcd = !!dcd; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14239de6a51fee08f9e7020074738150441305e83af2Alan Cox if (dcd != p->DCDState && p->port.tty && C_CLOCAL(p->port.tty)) { 1424a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!dcd) 14259de6a51fee08f9e7020074738150441305e83af2Alan Cox tty_hangup(p->port.tty); 14267bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14277bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->DCDState = dcd; 14287bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14307bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int moxa_poll_port(struct moxa_port *p, unsigned int handle, 14317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip) 14327bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14339de6a51fee08f9e7020074738150441305e83af2Alan Cox struct tty_struct *tty = p->port.tty; 14347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *ofsAddr; 14359de6a51fee08f9e7020074738150441305e83af2Alan Cox unsigned int inited = p->port.flags & ASYNC_INITIALIZED; 14367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 intr; 14377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty) { 14397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & EMPTYWAIT) && 14407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) == 0) { 14417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & LOWWAIT) && !tty->stopped && 14457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) <= WAKEUP_CHARS) { 14467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~LOWWAIT; 14477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14487bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14497bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14507bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (inited && !(p->statusflags & THROTTLE) && 14517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortRxQueue(p) > 0) { /* RX */ 14527bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortReadData(p); 14537bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } else { 14567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortFlushData(p, 0); /* flush RX */ 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14590bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 14607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!handle) /* nothing else to do */ 14617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby intr = readw(ip); /* port irq status */ 14647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr == 0) 14657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(0, ip); /* ACK port */ 14687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr = p->tableAddr; 14697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrTx) /* disable tx intr */ 14707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(readw(ofsAddr + HostStat) & ~WakeupTx, 14717bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr + HostStat); 14727bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14737bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!inited) 14747bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14757bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14767bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 14777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_insert_flip_char(tty, 0, TTY_BREAK); 14787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrLine) 14827bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 14837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14847bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14857bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14867bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14877bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_poll(unsigned long ignored) 14887bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14897bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_board_conf *brd; 14907bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip; 14912a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby unsigned int card, port, served = 0; 14927bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14937bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock(&moxa_lock); 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 14957bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby brd = &moxa_boards[card]; 14967bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!brd->ready) 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 14987bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14992a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby served++; 15002a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 15017bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = NULL; 15027bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(brd->intPend) == 0xff) 15037bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 15047bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++) 15067bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_poll_port(&brd->ports[port], !!ip, ip + port); 15077bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15087bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (ip) 15097bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writeb(0, brd->intPend); /* ACK */ 15107bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15117bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (moxaLowWaterChk) { 15127bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_port *p = brd->ports; 15137bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++, p++) 15147bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (p->lowChkFlag) { 15157bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->lowChkFlag = 0; 15167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_low_water_check(p->tableAddr); 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15207bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLowWaterChk = 0; 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15222a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (served) 15232a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 15242a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock(&moxa_lock); 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1529db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1531eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby register struct ktermios *ts = tty->termios; 1532eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 1533db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1544db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1545db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1546db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1547b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1548b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1549db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1550db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1551db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1552db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15556f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15578f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 15617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15646f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *ch) 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15669de6a51fee08f9e7020074738150441305e83af2Alan Cox struct tty_struct *tp = ch->port.tty; 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15689de6a51fee08f9e7020074738150441305e83af2Alan Cox if (!(ch->port.flags & ASYNC_INITIALIZED)) 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1576a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (C_HUPCL(tp)) 1577b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1579a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 15809de6a51fee08f9e7020074738150441305e83af2Alan Cox ch->port.flags &= ~ASYNC_INITIALIZED; 1581a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1588b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1591eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (mode < 0 || mode > 2) 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1593b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1596b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 15976f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 165108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby * speed_t MoxaPortSetBaud(int port, speed_t baud); 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1664606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1666606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1667c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 174033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 174233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1793b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1796eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u16 lowwater = 512; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1798b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 180008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 1802eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby else 1803eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby writew(readw(ofsAddr + HostStat) | WakeupBreak, 1804eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby ofsAddr + HostStat); 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1813b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1815b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slabystatic speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 182508d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 182608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int clock, val; 182708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby speed_t max; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby max = MOXA_IS_320(port->board) ? 460800 : 921600; 183008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (baud < 50) 1831eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 183408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby clock = 921600; 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 1838eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 1842b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1848b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1877eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 187908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board) && baud >= 921600) 188008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby return -1; 188108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 1882db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 18886f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1891eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1894b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 1895b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1897b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 1898b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 1899b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 1900b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 1901b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 1902eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1905b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1907eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u8 mode = 0; 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 1913b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 1914b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1917b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 1918b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1920b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 1932b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1935b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1940b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 194108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) { 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 19487bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (val & 8) 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 1950a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 19517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(port, val & 8); 1952a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 19547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return val; 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19572108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *port, 19582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby const unsigned char *buffer, int len) 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 19612108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int c, total; 19622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 head, tail, tx_mask, spage, epage; 19632108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead; 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1965b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 1966b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 19722108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 19759de6a51fee08f9e7020074738150441305e83af2Alan Cox moxaLog.txcnt[port->port.tty->index] += c; 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 19872108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19882108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 19952108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (c > 0) { 19962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = Page_size - pageofs; 19972108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (len > c) 19982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = c; 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20012108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 20022108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 20062108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c -= len; 20072108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20082108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby tail = (tail + total) & tx_mask; 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20102108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(tail, ofsAddr + TXwptr); 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 20122108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20157bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port) 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20179de6a51fee08f9e7020074738150441305e83af2Alan Cox struct tty_struct *tty = port->port.tty; 20182108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned char *dst; 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 20202108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int count, len, total; 20212108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 tail, rx_mask, spage, epage; 20222108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead, head; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2024b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2025b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 20312108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 203333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 203533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 20367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLog.rxcnt[tty->index] += total; 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 20422108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = (tail >= head) ? (tail - head) : 20432108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby (rx_mask + 1 - head); 20442108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20452108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(len, count)); 20462108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 20532108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (count > 0) { 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20562108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20572108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(Page_size - pageofs, count)); 20582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20592108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby 20602108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count -= len; 20612108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby pageofs = (pageofs + len) & Page_mask; 20622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (pageofs == 0 && ++pageno == epage) 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20642108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20652108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby head = (head + total) & rx_mask; 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20672108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(head, ofsAddr + RXrptr); 20682108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2070b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20722108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2076b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2078b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20792108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20842108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2087b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2089b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20902108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20952108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return mask - ((wptr - rptr) & mask); 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2098b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2100b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21012108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 21062108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2109b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2111b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2114b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2116b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21198f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 2120eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *retinfo) 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2122eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct tmp = { 2123eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .type = info->type, 21249de6a51fee08f9e7020074738150441305e83af2Alan Cox .line = info->port.tty->index, 21259de6a51fee08f9e7020074738150441305e83af2Alan Cox .flags = info->port.flags, 2126eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .baud_base = 921600, 2127eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .close_delay = info->close_delay 2128eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby }; 2129eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21338f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 2134eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *new_info) 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2138eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (new_serial.irq != 0 || new_serial.port != 0 || 2142eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.custom_divisor != 0 || 2143eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.baud_base != 921600) 2144eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 21489de6a51fee08f9e7020074738150441305e83af2Alan Cox (info->port.flags & ~ASYNC_USR_MASK))) 2149eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 2150eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby } else 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = new_serial.close_delay * HZ / 100; 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 21549de6a51fee08f9e7020074738150441305e83af2Alan Cox new_serial.flags |= (info->port.flags & ASYNC_FLAGS); 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2156eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby MoxaSetFifo(info, new_serial.type == PORT_16550A); 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 2159eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2168b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2170b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2180