moxa.c revision 08d01c792568ba07d2bcf5202dbc8484dbff6747
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa.c -- MOXA Intellio family multiport serial driver. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw). 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This code is loosely based on the Linux serial driver, written by 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Linus Torvalds, Theodore T'so and others. 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA Intellio Series Driver 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for : LINUX 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * date : 1999/1/7 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * version : 5.1 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 28037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#include <linux/firmware.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/signal.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/major.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/fcntl.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ptrace.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/serial.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bitops.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 50037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#include "moxa.h" 51037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5211324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_VERSION "5.1k" 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 54037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#define MOXA_FW_HDRLEN 32 55037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5611324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXAMAJOR 172 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5811324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_BOARDS 4 /* Don't change this value */ 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ 6011324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ 6308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby (brd)->boardType == MOXA_BOARD_C320_PCI) 6408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Define the Moxa PCI vendor and device IDs. 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6811324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_ISA 0 6911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_PCI 1 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum { 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_PCI = 1, 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_ISA, 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_PCI, 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_ISA, 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_CP204J, 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *moxa_brdname[] = 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo PCI series", 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo ISA series", 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo PCI series", 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo ISA series", 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CP-204J series", 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_device_id moxa_pcibrds[] = { 905ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), 915ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C218_PCI }, 925ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), 935ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C320_PCI }, 945ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), 955ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_CP204J }, 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0 } 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE(pci, moxa_pcibrds); 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 101037182346f0991683cc7320a257c3f6089432ceeJiri Slabystruct moxa_port; 102037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1038f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic struct moxa_board_conf { 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int boardType; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numPorts; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int busType; 1078f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 108810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int ready; 1098f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 110037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *ports; 111037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1128f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *basemem; 1138f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intNdx; 1148f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intPend; 1158f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intTable; 1168f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby} moxa_boards[MAX_BOARDS]; 1178f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 1188f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct mxser_mstatus { 1198f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby tcflag_t cflag; 1208f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int cts; 1218f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dsr; 1228f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int ri; 1238f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dcd; 1249dff89cd82af7bccc706fed288b1c33a51c3b937Jiri Slaby}; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1268f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxaq_str { 1278f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int inq; 1288f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int outq; 1298f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1318f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxa_port { 132b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_board_conf *board; 1337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty; 1347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *tableAddr; 1357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int close_delay; 138a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int count; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asyncflags; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cflag; 1417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned long statusflags; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t open_wait; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 DCDState; 1457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lineCtrl; 1467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u8 lowChkFlag; 1478f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystruct mon_str { 15074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int tick; 15174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int rxcnt[MAX_PORTS]; 15274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby int txcnt[MAX_PORTS]; 15374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby}; 15474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* statusflags */ 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXSTOPPED 0x1 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LOWWAIT 0x2 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EMPTYWAIT 0x4 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define THROTTLE 0x8 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SERIAL_DO_RESTART 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor = MOXAMAJOR; 16674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic struct mon_str moxaLog; 16774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic unsigned int moxaFuncTout = HZ / 2; 1687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic unsigned int moxaLowWaterChk; 169a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic DEFINE_MUTEX(moxa_openlock); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for insmod */ 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 172d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned long baseaddr[MAX_BOARDS]; 173d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int type[MAX_BOARDS]; 174d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int numports[MAX_BOARDS]; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("William Chen"); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 181d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(type, uint, NULL, 0); 182d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(type, "card type: C218=2, C320=4"); 183d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(baseaddr, ulong, NULL, 0); 184d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(baseaddr, "base address"); 185d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(numports, uint, NULL, 0); 186d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(numports, "numports (ignored for C218)"); 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * static functions: 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *, struct file *); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *, struct file *); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *, const unsigned char *, int); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *); 201606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void moxa_set_termios(struct tty_struct *, struct ktermios *); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long); 209db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *, struct ktermios *); 2106f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *); 2116f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa board interface functions: 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 215b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *); 216b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *); 217b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); 218b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *, int *, int *); 219b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *, int, int); 220b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); 221b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *); 222b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *, int); 2232108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int); 2247bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *); 225b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *); 226b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *); 227b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *); 228b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *); 229b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *); 2308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); 2318f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); 232b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 23574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * I/O functions 23674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 23774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 23874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_wait_finish(void __iomem *ofsAddr) 23974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 24074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned long end = jiffies + moxaFuncTout; 24174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 24274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby while (readw(ofsAddr + FuncCode) != 0) 24374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (time_after(jiffies, end)) 24474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return; 24574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) 24674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby printk(KERN_WARNING "moxa function expired\n"); 24774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 24874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 249eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slabystatic void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) 25074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 25174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(arg, ofsAddr + FuncArg); 25274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby writew(cmd, ofsAddr + FuncCode); 25374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxa_wait_finish(ofsAddr); 25474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 25574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 2567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_low_water_check(void __iomem *ofsAddr) 2577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 2587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 rptr, wptr, mask, len; 2597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 2607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 2617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby rptr = readw(ofsAddr + RXrptr); 2627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby wptr = readw(ofsAddr + RXwptr); 2637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby mask = readw(ofsAddr + RX_mask); 2647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby len = (wptr - rptr) & mask; 2657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (len <= Low_water) 2667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxafunc(ofsAddr, FC_SendXon, 0); 2677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 2687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 2697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 27074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 27174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * TTY operations 27274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 27374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 27474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic int moxa_ioctl(struct tty_struct *tty, struct file *file, 27574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int cmd, unsigned long arg) 27674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 27774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *ch = tty->driver_data; 27874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby void __user *argp = (void __user *)arg; 279a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int status, ret = 0; 28074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 28174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (tty->index == MAX_PORTS) { 28274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && 28374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby cmd != MOXA_GETMSTATUS) 28474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 28574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } else if (!ch) 28674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -ENODEV; 28774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 28874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby switch (cmd) { 28974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETDATACOUNT: 29074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxaLog.tick = jiffies; 291a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) 292a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -EFAULT; 293a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_FLUSH_QUEUE: 29574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby MoxaPortFlushData(ch, arg); 296a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 29774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IOQUEUE: { 29874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str __user *argm = argp; 29974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxaq_str tmp; 30074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 30174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 30274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 303a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 30474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 30574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 30674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 30774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 30874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (moxa_boards[i].ready) { 30974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.inq = MoxaPortRxQueue(p); 31074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.outq = MoxaPortTxQueue(p); 31174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 312a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 313a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 31474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 315a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 31674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 31774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 318a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 319a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } case MOXA_GET_OQUEUE: 32174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortTxQueue(ch); 322a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 323a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GET_IQUEUE: 32574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortRxQueue(ch); 326a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = put_user(status, (unsigned long __user *)argp); 327a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 32874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case MOXA_GETMSTATUS: { 32974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus __user *argm = argp; 33074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct mxser_mstatus tmp; 33174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *p; 33274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby unsigned int i, j; 33374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 334a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 33574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (i = 0; i < MAX_BOARDS; i++) { 33674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby p = moxa_boards[i].ports; 33774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { 33874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby memset(&tmp, 0, sizeof(tmp)); 33974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!moxa_boards[i].ready) 34074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby goto copy; 34174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 34274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby status = MoxaPortLineStatus(p); 34374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 1) 34474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cts = 1; 34574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 2) 34674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dsr = 1; 34774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (status & 4) 34874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.dcd = 1; 34974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 35074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby if (!p->tty || !p->tty->termios) 35174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->cflag; 35274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby else 35374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby tmp.cflag = p->tty->termios->c_cflag; 35474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabycopy: 355a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) { 356a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 35774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EFAULT; 358a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 35974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 36074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 361a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 362a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 36374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 36474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCGSERIAL: 365a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 366a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_get_serial_info(ch, argp); 367a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 368a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 36974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby case TIOCSSERIAL: 370a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 371a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = moxa_set_serial_info(ch, argp); 372a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 373a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 374a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby default: 375a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ret = -ENOIOCTLCMD; 37674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby } 377a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return ret; 37874d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 37974d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 38074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slabystatic void moxa_break_ctl(struct tty_struct *tty, int state) 38174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby{ 38274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby struct moxa_port *port = tty->driver_data; 38374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 38474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, 38574d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby Magic_code); 38674d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby} 38774d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 388b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations moxa_ops = { 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = moxa_open, 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = moxa_close, 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = moxa_write, 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = moxa_write_room, 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = moxa_flush_buffer, 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = moxa_chars_in_buffer, 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = moxa_ioctl, 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = moxa_throttle, 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = moxa_unthrottle, 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = moxa_set_termios, 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = moxa_stop, 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = moxa_start, 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = moxa_hangup, 40274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby .break_ctl = moxa_break_ctl, 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = moxa_tiocmget, 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = moxa_tiocmset, 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 407aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic struct tty_driver *moxaDriver; 408aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); 40934af946a22724c4e2b204957f2b24b22a0fb121cIngo Molnarstatic DEFINE_SPINLOCK(moxa_lock); 41033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 41174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby/* 41274d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby * HW init 41374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby */ 41474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby 415037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) 416037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 417037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 418037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 419037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 420037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 1) 421037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 422037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 423037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 424037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 3) 425037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 426037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 427037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 428037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 2) 429037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 430037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 431037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 432037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 433037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 434037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 435037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 436037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 437037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw(const void *ptr) 438037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 439037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const __le16 *lptr = ptr; 440037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 441037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (*lptr != cpu_to_le16(0x7980)) 442037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 443037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 444037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 445037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 446037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 447037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, 448037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 449037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 450037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 451037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 tmp; 452037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 453037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(HW_reset, baseAddr + Control_reg); /* reset */ 454037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 455037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memset_io(baseAddr, 0, 4096); 456037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr, buf, len); /* download BIOS */ 457037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(0, baseAddr + Control_reg); /* restart */ 458037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 459037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(2000); 460037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 461037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 462037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 463037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 464037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 465037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C218_KeyCode) 466037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 467037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 468037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 469037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 470037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != CP204J_KeyCode) 471037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 472037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 473037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 474037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_key); 475037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C320_KeyCode) 476037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 477037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_status); 478037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != STS_init) { 479eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " 480037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "module not found\n"); 481037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 482037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 483037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 484037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 485037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 486037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 487037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 488eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); 489037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 490037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 491037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 492037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, 493037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 494037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 495037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 496037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 497037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len < 7168) { 498eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); 499037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 500037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 501037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 502037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(len - 7168 - 2, baseAddr + C320bapi_len); 503037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(1, baseAddr + Control_reg); /* Select Page 1 */ 504037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); 505037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(2, baseAddr + Control_reg); /* Select Page 2 */ 506037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); 507037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 508037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 509037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 510037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5115292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slabystatic int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, 512037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 515037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const u16 *uptr = ptr; 516037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t wlen, len2, j; 5175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned long key, loadbuf, loadlen, checksum, checksum_ok; 51808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int i, retry; 519037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 usum, keycode; 520037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : 5225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby C218_KeyCode; 523037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5245292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby switch (brd->boardType) { 5255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_CP204J: 5265292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_ISA: 5275292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_PCI: 5285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C218_key; 5295292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C218_LoadBuf; 5305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C218DLoad_len; 5315292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C218check_sum; 5325292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C218chksum_ok; 5335292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 5345292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby default: 5355292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C320_key; 5365292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = C320_KeyCode; 5375292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C320_LoadBuf; 5385292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C320DLoad_len; 5395292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C320check_sum; 5405292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C320chksum_ok; 5415292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 542037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 543037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 544037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum = 0; 545037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 546037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < wlen; i++) 547037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum += le16_to_cpu(uptr[i]); 548037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry = 0; 549037182346f0991683cc7320a257c3f6089432ceeJiri Slaby do { 550037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 551037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j = 0; 552037182346f0991683cc7320a257c3f6089432ceeJiri Slaby while (wlen) { 553037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len2 = (wlen > 2048) ? 2048 : wlen; 554037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen -= len2; 5555292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); 556037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j += len2 << 1; 5575292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 5585292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(len2, baseAddr + loadlen); 5595292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5605292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5615292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 562037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 563037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 564037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5655292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) != keycode) 566037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 567037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 5685292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + loadlen); 5695292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(usum, baseAddr + checksum); 5705292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 5715292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 5725292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 573037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 574037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 575037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 576037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry++; 5775292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); 5785292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readb(baseAddr + checksum_ok) != 1) 579037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 580037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5815292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 582037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 600; i++) { 583037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 584037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 585037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 586037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 587037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 588037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 589037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 59008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 5915292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ 5925292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3800, baseAddr + TMS320_PORT1); 5935292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3900, baseAddr + TMS320_PORT2); 5945292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(28499, baseAddr + TMS320_CLOCK); 5955292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } else { 5965292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3200, baseAddr + TMS320_PORT1); 5975292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3400, baseAddr + TMS320_PORT2); 5985292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(19999, baseAddr + TMS320_CLOCK); 5995292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 600037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 601037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(1, baseAddr + Disable_IRQ); 602037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(0, baseAddr + Magic_no); 603037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 500; i++) { 604037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 605037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 606037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 607037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 608037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 609037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 610037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 61108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(brd)) { 6125292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby j = readw(baseAddr + Module_cnt); 6135292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (j <= 0) 6145292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 6155292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->numPorts = j * 8; 6165292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(j, baseAddr + Module_no); 6175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + Magic_no); 6185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 600; i++) { 6195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 6205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 6215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby msleep(10); 6225292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 6235292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 6245292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 625037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 626037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intNdx = baseAddr + IRQindex; 627037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intPend = baseAddr + IRQpending; 628037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intTable = baseAddr + IRQtable; 629037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 630037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 631037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 632037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 633037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, 634037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 635037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 636037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *ofsAddr, *baseAddr = brd->basemem; 637037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *port; 638037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int retval, i; 639037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 640037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len % 2) { 641eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: bios length is not even\n"); 642037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 643037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 644037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 6455292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ 6465292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (retval) 6475292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return retval; 6485292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 649037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 650037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 651037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 652037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 653037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 654037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 655b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 656037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 659037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 660037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_mask, ofsAddr + RX_mask); 661037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_mask, ofsAddr + TX_mask); 662037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); 663037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); 664037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 665037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); 666037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); 667037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 668037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 669037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 670037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 671037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 672037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 673b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 674037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 675037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 676037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 677037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 678037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->numPorts) { 679037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 8: 680037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_mask, ofsAddr + RX_mask); 681037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_mask, ofsAddr + TX_mask); 682037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); 683037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); 684037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); 685037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); 686037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 687037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 688037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 16: 689037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_mask, ofsAddr + RX_mask); 690037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_mask, ofsAddr + TX_mask); 691037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); 692037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); 693037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); 694037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); 695037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 696037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 697037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 24: 698037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_mask, ofsAddr + RX_mask); 699037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_mask, ofsAddr + TX_mask); 700037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); 701037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); 702037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); 703037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 704037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 705037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 32: 706037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_mask, ofsAddr + RX_mask); 707037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_mask, ofsAddr + TX_mask); 708037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_ofs, ofsAddr + Ofs_txb); 709037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); 710037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); 711037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); 712037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 713037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 714037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 715037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 716037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 717037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 718037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 719037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 720037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 721037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) 722037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 723037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void *ptr = fw->data; 724037182346f0991683cc7320a257c3f6089432ceeJiri Slaby char rsn[64]; 725037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 lens[5]; 726037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len; 727037182346f0991683cc7320a257c3f6089432ceeJiri Slaby unsigned int a, lenp, lencnt; 728037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret = -EINVAL; 729037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct { 730037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le32 magic; /* 0x34303430 */ 731037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved1[2]; 732037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 type; /* UNIX = 3 */ 733037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 model; /* C218T=1, C320T=2, CP204=3 */ 734037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved2[8]; 735037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le16 len[5]; 736037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } *hdr = ptr; 737037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 738037182346f0991683cc7320a257c3f6089432ceeJiri Slaby BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); 739037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 740037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (fw->size < MOXA_FW_HDRLEN) { 741037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "too short (even header won't fit)"); 742037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 743037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 744037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->magic != cpu_to_le32(0x30343034)) { 745037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); 746037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 747037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 748037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->type != 3) { 749037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for linux, type is %u", hdr->type); 750037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 751037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 752037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_check_fw_model(brd, hdr->model)) { 753037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for this card, model is %u", hdr->model); 754037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 755037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 756037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 757037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len = MOXA_FW_HDRLEN; 758037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lencnt = hdr->model == 2 ? 5 : 3; 759037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (a = 0; a < ARRAY_SIZE(lens); a++) { 760037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lens[a] = le16_to_cpu(hdr->len[a]); 761037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (lens[a] && len + lens[a] <= fw->size && 762037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxa_check_fw(&fw->data[len])) 763eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_WARNING "MOXA firmware: unexpected input " 764037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "at offset %u, but going on\n", (u32)len); 765037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!lens[a] && a < lencnt) { 766037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "too few entries in fw file"); 767037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 768037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 769037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len += lens[a]; 770037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 771037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 772037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len != fw->size) { 773037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, 774037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (u32)len); 775037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 776037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 777037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 778037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += MOXA_FW_HDRLEN; 779037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp = 0; /* bios */ 780037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 781037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "read above"); 782037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 783037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_bios(brd, ptr, lens[lenp]); 784037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 785037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 786037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 787037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* we skip the tty section (lens[1]), since we don't need it */ 788037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 789037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; /* comm */ 790037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 791037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->model == 2) { 792037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_320b(brd, ptr, lens[lenp]); 793037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 794037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 795037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* skip another tty */ 796037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 797037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; 798037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 799037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 800037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_code(brd, ptr, lens[lenp]); 801037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 802037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 803037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 804037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 805037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 806037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); 807037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 808037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 809037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 810037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) 811037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 812037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const struct firmware *fw; 813037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const char *file; 814810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_port *p; 815810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 816037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret; 817037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 818810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), 819810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby GFP_KERNEL); 820810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (brd->ports == NULL) { 821810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby printk(KERN_ERR "cannot allocate memory for ports\n"); 822810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ret = -ENOMEM; 823810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err; 824810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 825810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 826810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { 827810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->type = PORT_16550A; 828810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->close_delay = 5 * HZ / 10; 829810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 830810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby init_waitqueue_head(&p->open_wait); 831810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby } 832810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 833037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 834037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 835037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 836037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c218tunx.cod"; 837037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 838037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 839037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "cp204unx.cod"; 840037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 841037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 842037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c320tunx.cod"; 843037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 844037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 845037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 846037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = request_firmware(&fw, file, dev); 847037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) { 848037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "request_firmware failed\n"); 849810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 850037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 851037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 852037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_fw(brd, fw); 853037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 854037182346f0991683cc7320a257c3f6089432ceeJiri Slaby release_firmware(fw); 855810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 856810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (ret) 857810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby goto err_free; 858810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 8592a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_lock_bh(&moxa_lock); 860810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 1; 8610bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby if (!timer_pending(&moxaTimer)) 8620bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 8632a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock_bh(&moxa_lock); 8640bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 865810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return 0; 866810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr_free: 867810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 868810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabyerr: 869037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 870037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 871037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 872810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slabystatic void moxa_board_deinit(struct moxa_board_conf *brd) 873810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby{ 874a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby unsigned int a, opened; 875a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 876a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 8777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 878810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->ready = 0; 8797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 880a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 881a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby /* pci hot-un-plug support */ 882a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 883a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) 884a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby tty_hangup(brd->ports[a].tty); 885a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 886a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened = 0; 887a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby for (a = 0; a < brd->numPorts; a++) 888a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) 889a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby opened++; 890a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 891a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!opened) 892a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 893a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby msleep(50); 894a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 895a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 896a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 897810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby iounmap(brd->basemem); 898810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd->basemem = NULL; 899810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby kfree(brd->ports); 900810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby} 901810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 9039cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic int __devinit moxa_pci_probe(struct pci_dev *pdev, 9049cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby const struct pci_device_id *ent) 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9069cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *board; 9079cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby unsigned int i; 9089cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int board_type = ent->driver_data; 9099cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int retval; 9109cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9119cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = pci_enable_device(pdev); 9127aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (retval) { 9137aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't enable pci device\n"); 9149cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9157aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9169cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9179cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby for (i = 0; i < MAX_BOARDS; i++) 9189cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (moxa_boards[i].basemem == NULL) 9199cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby break; 9209cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9219cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = -ENODEV; 9229cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (i >= MAX_BOARDS) { 9237aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " 9249cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby "found. Board is ignored.\n", MAX_BOARDS); 9259cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 9269cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby } 9279cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9289cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby board = &moxa_boards[i]; 929e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 930e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby retval = pci_request_region(pdev, 2, "moxa-base"); 931e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby if (retval) { 932e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby dev_err(&pdev->dev, "can't request pci region 2\n"); 933e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err; 934e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby } 935e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 936e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); 9377aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (board->basemem == NULL) { 9387aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't remap io space 2\n"); 939e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err_reg; 9407aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 9419cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->boardType = board_type; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (board_type) { 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_ISA: 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_PCI: 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 8; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_CP204J: 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 4; 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 0; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->busType = MOXA_BUS_TYPE_PCI; 957a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 958037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retval = moxa_init_board(board, &pdev->dev); 959037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (retval) 960037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err_base; 961037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 9629cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby pci_set_drvdata(pdev, board); 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 964eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 965037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 966037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 967037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 968e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 969e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9709cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 9719cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 9729cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 9739cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9749cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 9759cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 9769cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 9779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 978810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(brd); 979810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 980e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 982a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 983a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 984a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 985a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 986a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 987a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 988a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 993810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int isabrds = 0; 994d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9967aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 9977aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 10039b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 1010606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 1011606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 1016eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 1023d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 1024d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 1025810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 1027d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 1028d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 1029d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 1030d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 10317aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 1032d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 1033d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 1034d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 1035d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 1036d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 1037d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 1038d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->basemem = ioremap(baseaddr[i], 0x4000); 1039d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 1040eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: can't remap %lx\n", 1041d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1044037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 1045037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 1046037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 1047037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 1048037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1049d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 1050d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 1051d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1054d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1056a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 1058a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 1059a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 1060eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "Can't register MOXA pci driver!\n"); 1061d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 1062a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1065a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1066a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1071eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby unsigned int i; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10739cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 1074a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 10759cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 1076a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1077810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ 1078810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (moxa_boards[i].ready) 1079810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(&moxa_boards[i]); 10802a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10812a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby del_timer_sync(&moxaTimer); 10822a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10832a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (tty_unregister_driver(moxaDriver)) 10842a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 10852a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby "serial driver\n"); 10862a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby put_tty_driver(moxaDriver); 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1092a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic void moxa_close_port(struct moxa_port *ch) 1093a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1094a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_shut_down(ch); 1095a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaPortFlushData(ch, 2); 1096a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; 1097a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty->driver_data = NULL; 1098a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty = NULL; 1099a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1100a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1101a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 1102a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch) 1103a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1104a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby DEFINE_WAIT(wait); 1105a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int retval = 0; 1106a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby u8 dcd; 1107a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1108a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 1109a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); 1110a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty_hung_up_p(filp)) { 1111a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#ifdef SERIAL_DO_RESTART 1112a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1113a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#else 1114a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -EAGAIN; 1115a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#endif 1116a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1117a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1118a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 1119a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby dcd = ch->DCDState; 1120a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 1121a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (dcd) 1122a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1123a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1124a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (signal_pending(current)) { 1125a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1126a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1127a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1128a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby schedule(); 1129a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1130a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby finish_wait(&ch->open_wait, &wait); 1131a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1132a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 1133a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1134a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1137810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_board_conf *brd; 11388f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 114211324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 114474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1146a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (mutex_lock_interruptible(&moxa_openlock)) 1147a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return -ERESTARTSYS; 1148810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; 1149a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!brd->ready) { 1150a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1151810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return -ENODEV; 1152a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1154810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count++; 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = tty; 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) { 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 1160db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 1161b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 1162b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 1163a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaSetFifo(ch, ch->type == PORT_16550A); 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_INITIALIZED; 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1166a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1168a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = 0; 1169a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) 1170a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 1171a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1172a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (retval) { 1173a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) /* 0 means already hung up... */ 1174a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (--ch->count == 0) 1175a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1176a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } else 1177a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags |= ASYNC_NORMAL_ACTIVE; 1178a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1180a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11858f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 118811324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1189a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (port == MAX_PORTS || tty_hung_up_p(filp)) 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1192a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1193a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1194a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) 1195a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 1196a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty->count == 1 && ch->count != 1) { 11977aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 11987aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "tty->count is 1, ch->count is %d\n", ch->count); 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 1; 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (--ch->count < 0) { 12027aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 12037aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1206a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) 1207a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_INITIALIZED) { 12116f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1215a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1216a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabyunlock: 1217a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1223b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 1224b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1227b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 122833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 12297bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 12302108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = MoxaPortWriteData(ch, buf, count); 12317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 1234eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return len; 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12398f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 1242eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1243b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1245eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1246b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1251b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1255b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1261b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1271eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1272b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 12796f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1281eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return chars; 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1286a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1289a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1290a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1291a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1292a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 129374d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1294a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1296b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1301b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 1308a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1315a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1320a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1321a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1322a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1323a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 132474d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1325a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1327b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1336b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 1337a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *tty) 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1343eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= THROTTLE; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *tty) 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1350eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1356eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct ktermios *old_termios) 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1358eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1362db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 1363eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1369eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1373b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1380eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1388b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1394a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1396a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1397a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1398a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) { 1399a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1400a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return; 1401a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 1403a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1404a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1405a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14097bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14117bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby dcd = !!dcd; 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1413eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { 1414a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!dcd) 14157bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_hangup(p->tty); 14167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14177bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->DCDState = dcd; 14187bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14207bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int moxa_poll_port(struct moxa_port *p, unsigned int handle, 14217bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip) 14227bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14237bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = p->tty; 14247bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *ofsAddr; 14257bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; 14267bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 intr; 14277bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14287bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty) { 14297bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & EMPTYWAIT) && 14307bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) == 0) { 14317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14327bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & LOWWAIT) && !tty->stopped && 14357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) <= WAKEUP_CHARS) { 14367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~LOWWAIT; 14377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (inited && !(p->statusflags & THROTTLE) && 14417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortRxQueue(p) > 0) { /* RX */ 14427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortReadData(p); 14437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } else { 14467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortFlushData(p, 0); /* flush RX */ 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14490bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 14507bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!handle) /* nothing else to do */ 14517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14527bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14537bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby intr = readw(ip); /* port irq status */ 14547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr == 0) 14557bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(0, ip); /* ACK port */ 14587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr = p->tableAddr; 14597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrTx) /* disable tx intr */ 14607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(readw(ofsAddr + HostStat) & ~WakeupTx, 14617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr + HostStat); 14627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!inited) 14647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 14677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_insert_flip_char(tty, 0, TTY_BREAK); 14687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14717bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrLine) 14727bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 14737bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14747bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14757bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14767bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_poll(unsigned long ignored) 14787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_board_conf *brd; 14807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip; 14812a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby unsigned int card, port, served = 0; 14827bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock(&moxa_lock); 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 14857bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby brd = &moxa_boards[card]; 14867bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!brd->ready) 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 14887bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14892a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby served++; 14902a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 14917bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = NULL; 14927bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(brd->intPend) == 0xff) 14937bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 14947bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14957bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++) 14967bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_poll_port(&brd->ports[port], !!ip, ip + port); 14977bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14987bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (ip) 14997bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writeb(0, brd->intPend); /* ACK */ 15007bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15017bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (moxaLowWaterChk) { 15027bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_port *p = brd->ports; 15037bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++, p++) 15047bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (p->lowChkFlag) { 15057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->lowChkFlag = 0; 15067bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_low_water_check(p->tableAddr); 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15107bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLowWaterChk = 0; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15122a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (served) 15132a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 15142a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock(&moxa_lock); 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1519db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1521eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby register struct ktermios *ts = tty->termios; 1522eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 1523db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1534db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1535db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1536db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1537b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1538b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1539db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1540db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1541db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1542db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15456f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15478f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15497bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 15517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15546f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *ch) 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1556a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct tty_struct *tp = ch->tty; 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1566a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (C_HUPCL(tp)) 1567b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1569a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_INITIALIZED; 1571a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1578b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1581eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (mode < 0 || mode > 2) 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1583b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1586b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 15876f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 164108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby * speed_t MoxaPortSetBaud(int port, speed_t baud); 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1654606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1656606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1657c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 173033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 173233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1783b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1786eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u16 lowwater = 512; 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1788b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 179008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 1792eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby else 1793eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby writew(readw(ofsAddr + HostStat) | WakeupBreak, 1794eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby ofsAddr + HostStat); 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1803b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1805b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 181308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slabystatic speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 181508d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 181608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int clock, val; 181708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby speed_t max; 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 181908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby max = MOXA_IS_320(port->board) ? 460800 : 921600; 182008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (baud < 50) 1821eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 182408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby clock = 921600; 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 1828eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 1832b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1838b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1867eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 186908d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board) && baud >= 921600) 187008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby return -1; 187108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 1872db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 18786f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1881eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1884b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 1885b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1887b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 1888b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 1889b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 1890b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 1891b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 1892eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1895b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1897eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u8 mode = 0; 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 1903b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 1904b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1907b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 1908b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1910b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 1922b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1925b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1930b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 193108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) { 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 19387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (val & 8) 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 1940a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 19417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(port, val & 8); 1942a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 19447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return val; 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19472108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *port, 19482108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby const unsigned char *buffer, int len) 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 19512108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int c, total; 19522108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 head, tail, tx_mask, spage, epage; 19532108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead; 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1955b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 1956b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 19622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 1965b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxaLog.txcnt[port->tty->index] += c; 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 19772108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19782108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 19852108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (c > 0) { 19862108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = Page_size - pageofs; 19872108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (len > c) 19882108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = c; 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 19912108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19922108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 19962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c -= len; 19972108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 19982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby tail = (tail + total) & tx_mask; 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20002108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(tail, ofsAddr + TXwptr); 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 20022108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port) 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20077bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = port->tty; 20082108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned char *dst; 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 20102108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int count, len, total; 20112108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 tail, rx_mask, spage, epage; 20122108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead, head; 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2014b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2015b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 20212108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 202333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 202533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 20267bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLog.rxcnt[tty->index] += total; 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 20322108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = (tail >= head) ? (tail - head) : 20332108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby (rx_mask + 1 - head); 20342108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20352108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(len, count)); 20362108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 20432108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (count > 0) { 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20462108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20472108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(Page_size - pageofs, count)); 20482108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20492108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby 20502108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count -= len; 20512108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby pageofs = (pageofs + len) & Page_mask; 20522108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (pageofs == 0 && ++pageno == epage) 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20542108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20552108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby head = (head + total) & rx_mask; 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20572108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(head, ofsAddr + RXrptr); 20582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2060b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2066b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2068b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20692108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20742108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2077b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2079b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20802108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20852108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return mask - ((wptr - rptr) & mask); 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2088b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2090b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20912108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 20962108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2099b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2101b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2104b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2106b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21098f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 2110eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *retinfo) 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2112eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct tmp = { 2113eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .type = info->type, 2114eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .line = info->tty->index, 2115eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .flags = info->asyncflags, 2116eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .baud_base = 921600, 2117eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .close_delay = info->close_delay 2118eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby }; 2119eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21238f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 2124eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *new_info) 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2128eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2131eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (new_serial.irq != 0 || new_serial.port != 0 || 2132eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.custom_divisor != 0 || 2133eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.baud_base != 921600) 2134eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->asyncflags & ~ASYNC_USR_MASK))) 2139eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 2140eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby } else 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = new_serial.close_delay * HZ / 100; 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2146eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby MoxaSetFifo(info, new_serial.type == PORT_16550A); 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 2149eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2158b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2160b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2170