moxa.c revision bb9f910a1153101a2f92620f1e7d0fda786c9812
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 964bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", 965bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby moxa_brdname[board_type - 1], board->numPorts); 966bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 967eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 968037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 969037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 970037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 971e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 972e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9739cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 9749cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 9759cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 9769cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 9779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 9789cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 9799cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 9809cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 981810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(brd); 982810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby 983e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 985a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 986a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 987a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 988a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 989a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 990a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 991a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 996810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int isabrds = 0; 997d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9997aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 10007aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 10069b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 1013606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 1014606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 1019eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1024d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 1026d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 1027d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 1028810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby unsigned int i; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 1030d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 1031d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 1032d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 1033d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 10347aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 1035d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 1036d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 1037d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 1038d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 1039d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 1040d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 1041d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->basemem = ioremap(baseaddr[i], 0x4000); 1042d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 1043eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "MOXA: can't remap %lx\n", 1044d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1047037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 1048037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 1049037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 1050037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 1051037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1052d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 1053bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " 1054bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby "ready (%u ports, firmware loaded)\n", 1055bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby baseaddr[i], brd->numPorts); 1056bb9f910a1153101a2f92620f1e7d0fda786c9812Jiri Slaby 1057d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 1058d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1061d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1063a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 1065a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 1066a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 1067eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby printk(KERN_ERR "Can't register MOXA pci driver!\n"); 1068d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 1069a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1072a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1073a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1078eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby unsigned int i; 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10809cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 1081a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 10829cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 1083a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 1084810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ 1085810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby if (moxa_boards[i].ready) 1086810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby moxa_board_deinit(&moxa_boards[i]); 10872a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10882a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby del_timer_sync(&moxaTimer); 10892a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 10902a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (tty_unregister_driver(moxaDriver)) 10912a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 10922a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby "serial driver\n"); 10932a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby put_tty_driver(moxaDriver); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1099a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic void moxa_close_port(struct moxa_port *ch) 1100a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1101a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_shut_down(ch); 1102a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaPortFlushData(ch, 2); 1103a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; 1104a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty->driver_data = NULL; 1105a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->tty = NULL; 1106a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1107a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1108a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 1109a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch) 1110a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby{ 1111a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby DEFINE_WAIT(wait); 1112a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby int retval = 0; 1113a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby u8 dcd; 1114a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1115a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby while (1) { 1116a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); 1117a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty_hung_up_p(filp)) { 1118a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#ifdef SERIAL_DO_RESTART 1119a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1120a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#else 1121a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -EAGAIN; 1122a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby#endif 1123a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1124a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1125a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 1126a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby dcd = ch->DCDState; 1127a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 1128a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (dcd) 1129a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1130a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1131a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (signal_pending(current)) { 1132a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = -ERESTARTSYS; 1133a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby break; 1134a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1135a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby schedule(); 1136a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 1137a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby finish_wait(&ch->open_wait, &wait); 1138a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 1139a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 1140a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby} 1141a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1144810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby struct moxa_board_conf *brd; 11458f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 114911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 115174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1153a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (mutex_lock_interruptible(&moxa_openlock)) 1154a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return -ERESTARTSYS; 1155810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; 1156a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!brd->ready) { 1157a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1158810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby return -ENODEV; 1159a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161810ab09b2f3a4e9a6f553e3d1e84a27f4074de9cJiri Slaby ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count++; 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = tty; 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) { 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 1167db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 1168b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 1169b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 1170a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby MoxaSetFifo(ch, ch->type == PORT_16550A); 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_INITIALIZED; 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1173a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1175a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = 0; 1176a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) 1177a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 1178a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1179a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (retval) { 1180a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) /* 0 means already hung up... */ 1181a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (--ch->count == 0) 1182a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1183a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } else 1184a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch->asyncflags |= ASYNC_NORMAL_ACTIVE; 1185a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1187a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return retval; 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11928f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 119511324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1196a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (port == MAX_PORTS || tty_hung_up_p(filp)) 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1199a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1200a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1201a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) 1202a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 1203a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (tty->count == 1 && ch->count != 1) { 12047aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 12057aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "tty->count is 1, ch->count is %d\n", ch->count); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 1; 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (--ch->count < 0) { 12097aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 12107aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1213a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch->count) 1214a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby goto unlock; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_INITIALIZED) { 12186f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1222a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1223a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slabyunlock: 1224a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1230b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 1231b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1234b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 123533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 12367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 12372108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = MoxaPortWriteData(ch, buf, count); 12387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 1241eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return len; 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12468f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 1249eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1250b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1252eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1253b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1258b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1262b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1268b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1278eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 1279b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 12866f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1288eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return chars; 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1293a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1296a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1297a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1298a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1299a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 130074d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1301a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1303b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1308b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 1315a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1322a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 132611324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 1327a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1328a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1329a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!ch) { 1330a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 133174d7d97b9e2a090a4b1812b5074ac6c539234ebbJiri Slaby return -EINVAL; 1332a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1334b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1343b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 1344a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(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_unthrottle(struct tty_struct *tty) 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1357eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1363eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct ktermios *old_termios) 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1365eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1369db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 1370eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1376eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1380b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1387eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1395b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1401a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct moxa_port *ch; 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1403a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_lock(&moxa_openlock); 1404a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby ch = tty->driver_data; 1405a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (ch == NULL) { 1406a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1407a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby return; 1408a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby } 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 1410a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby moxa_close_port(ch); 1411a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby mutex_unlock(&moxa_openlock); 1412a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14167bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14187bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby dcd = !!dcd; 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1420eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { 1421a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (!dcd) 14227bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_hangup(p->tty); 14237bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14247bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->DCDState = dcd; 14257bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14277bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int moxa_poll_port(struct moxa_port *p, unsigned int handle, 14287bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip) 14297bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14307bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = p->tty; 14317bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby void __iomem *ofsAddr; 14327bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; 14337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 intr; 14347bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14357bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty) { 14367bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & EMPTYWAIT) && 14377bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) == 0) { 14387bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14397bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14407bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14417bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if ((p->statusflags & LOWWAIT) && !tty->stopped && 14427bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortTxQueue(p) <= WAKEUP_CHARS) { 14437bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~LOWWAIT; 14447bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_wakeup(tty); 14457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14467bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14477bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (inited && !(p->statusflags & THROTTLE) && 14487bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortRxQueue(p) > 0) { /* RX */ 14497bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortReadData(p); 14507bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14527bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } else { 14537bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->statusflags &= ~EMPTYWAIT; 14547bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby MoxaPortFlushData(p, 0); /* flush RX */ 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14560bcc4caadc8f5396b52950ee03c67b76875602dfJiri Slaby 14577bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!handle) /* nothing else to do */ 14587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14597bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14607bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby intr = readw(ip); /* port irq status */ 14617bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr == 0) 14627bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14637bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14647bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(0, ip); /* ACK port */ 14657bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr = p->tableAddr; 14667bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrTx) /* disable tx intr */ 14677bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writew(readw(ofsAddr + HostStat) & ~WakeupTx, 14687bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ofsAddr + HostStat); 14697bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14707bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!inited) 14717bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14727bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14737bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 14747bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_insert_flip_char(tty, 0, TTY_BREAK); 14757bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby tty_schedule_flip(tty); 14767bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby } 14777bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14787bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (intr & IntrLine) 14797bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 14807bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14817bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return 0; 14827bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby} 14837bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14847bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic void moxa_poll(unsigned long ignored) 14857bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby{ 14867bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_board_conf *brd; 14877bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby u16 __iomem *ip; 14882a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby unsigned int card, port, served = 0; 14897bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14907bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock(&moxa_lock); 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 14927bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby brd = &moxa_boards[card]; 14937bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (!brd->ready) 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 14957bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 14962a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby served++; 14972a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby 14987bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = NULL; 14997bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (readb(brd->intPend) == 0xff) 15007bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 15017bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15027bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++) 15037bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_poll_port(&brd->ports[port], !!ip, ip + port); 15047bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15057bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (ip) 15067bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby writeb(0, brd->intPend); /* ACK */ 15077bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby 15087bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (moxaLowWaterChk) { 15097bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct moxa_port *p = brd->ports; 15107bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby for (port = 0; port < brd->numPorts; port++, p++) 15117bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (p->lowChkFlag) { 15127bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby p->lowChkFlag = 0; 15137bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_low_water_check(p->tableAddr); 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15177bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLowWaterChk = 0; 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15192a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby if (served) 15202a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 15212a5413416b6b2fd8a5a38601a4fe3b56a52cfb86Jiri Slaby spin_unlock(&moxa_lock); 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1526db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1528eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby register struct ktermios *ts = tty->termios; 1529eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct moxa_port *ch = tty->driver_data; 1530db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1541db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1542db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1543db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1544b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1545b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1546db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1547db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1548db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1549db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15526f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15548f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15567bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_lock_bh(&moxa_lock); 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 15587bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby spin_unlock_bh(&moxa_lock); 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15616f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *ch) 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1563a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby struct tty_struct *tp = ch->tty; 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1568b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1573a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby if (C_HUPCL(tp)) 1574b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1576a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_INITIALIZED; 1578a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1585b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1588eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (mode < 0 || mode > 2) 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1590b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1593b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 15946f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 164808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby * speed_t MoxaPortSetBaud(int port, speed_t baud); 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1661606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1663606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1664c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 173733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 173933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1790b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 1793eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u16 lowwater = 512; 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1795b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 179708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 1799eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby else 1800eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby writew(readw(ofsAddr + HostStat) | WakeupBreak, 1801eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby ofsAddr + HostStat); 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1810b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1812b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182008d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slabystatic speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 182208d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 182308d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby unsigned int clock, val; 182408d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby speed_t max; 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby max = MOXA_IS_320(port->board) ? 460800 : 921600; 182708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (baud < 50) 1828eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 183108d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby clock = 921600; 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 1835eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1838b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 1839b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1845b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1874eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 187608d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board) && baud >= 921600) 187708d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby return -1; 187808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby 1879db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 18856f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1888eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return baud; 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1891b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 1892b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1894b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 1895b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 1896b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 1897b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 1898b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 1899eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1902b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1904eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby u8 mode = 0; 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 1910b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 1911b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1914b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 1915b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1917b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 1929b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1932b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1937b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 193808d01c792568ba07d2bcf5202dbc8484dbff6747Jiri Slaby if (MOXA_IS_320(port->board)) { 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 19457bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby if (val & 8) 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 1947a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_lock_bh(&moxa_lock); 19487bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxa_new_dcdstate(port, val & 8); 1949a8f5cda067e2eeefe49fe386caf0f61fc5c825e0Jiri Slaby spin_unlock_bh(&moxa_lock); 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 19517bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby return val; 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19542108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slabystatic int MoxaPortWriteData(struct moxa_port *port, 19552108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby const unsigned char *buffer, int len) 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 19582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int c, total; 19592108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 head, tail, tx_mask, spage, epage; 19602108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead; 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1962b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 1963b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 19692108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 1972b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxaLog.txcnt[port->tty->index] += c; 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 19842108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19852108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 19922108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (c > 0) { 19932108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = Page_size - pageofs; 19942108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (len > c) 19952108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = c; 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 19982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_toio(ofs, buffer, len); 19992108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby buffer += len; 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 20032108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby c -= len; 20042108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20052108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby tail = (tail + total) & tx_mask; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20072108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(tail, ofsAddr + TXwptr); 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 20092108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20127bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port) 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20147bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby struct tty_struct *tty = port->tty; 20152108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned char *dst; 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 20172108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby unsigned int count, len, total; 20182108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 tail, rx_mask, spage, epage; 20192108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 pageno, pageofs, bufhead, head; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2021b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2022b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 20282108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 203033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 203233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 20337bcf97d1dd88135b58c7adb7c3bfebab55b21a20Jiri Slaby moxaLog.rxcnt[tty->index] += total; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 20392108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = (tail >= head) ? (tail - head) : 20402108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby (rx_mask + 1 - head); 20412108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20422108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(len, count)); 20432108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 20502108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby while (count > 0) { 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 20532108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby len = tty_prepare_flip_string(tty, &dst, 20542108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby min(Page_size - pageofs, count)); 20552108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby memcpy_fromio(dst, ofs, len); 20562108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby 20572108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby count -= len; 20582108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby pageofs = (pageofs + len) & Page_mask; 20592108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (pageofs == 0 && ++pageno == epage) 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 20612108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby } 20622108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby head = (head + total) & rx_mask; 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20642108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby writew(head, ofsAddr + RXrptr); 20652108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby if (readb(ofsAddr + FlagStat) & Xoff_state) { 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2067b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20692108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return total; 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2073b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2075b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20762108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20812108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2084b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2086b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20872108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 20922108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return mask - ((wptr - rptr) & mask); 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2095b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2097b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20982108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby u16 rptr, wptr, mask; 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 21032108eba5c531c12f5ae2ed2ef4cee7bf4246897bJiri Slaby return (wptr - rptr) & mask; 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2106b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2108b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2113b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21168f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 2117eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *retinfo) 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2119eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct tmp = { 2120eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .type = info->type, 2121eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .line = info->tty->index, 2122eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .flags = info->asyncflags, 2123eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .baud_base = 921600, 2124eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby .close_delay = info->close_delay 2125eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby }; 2126eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 2131eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby struct serial_struct __user *new_info) 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2135eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2138eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby if (new_serial.irq != 0 || new_serial.port != 0 || 2139eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.custom_divisor != 0 || 2140eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby new_serial.baud_base != 921600) 2141eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->asyncflags & ~ASYNC_USR_MASK))) 2146eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return -EPERM; 2147eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby } else 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = new_serial.close_delay * HZ / 100; 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2153eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby MoxaSetFifo(info, new_serial.type == PORT_16550A); 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 2156eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0Jiri Slaby return 0; 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2165b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2167b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2177