moxa.c revision b4173f45758a5b5185acb302c507289e661d9419
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> 4595e0791480af8347460d0cbe34a46eca7e77d0d0Jiri Slaby#include <linux/completion.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#include "moxa.h" 52037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5311324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_VERSION "5.1k" 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55037182346f0991683cc7320a257c3f6089432ceeJiri Slaby#define MOXA_FW_HDRLEN 32 56037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5711324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXAMAJOR 172 5811324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXACUMAJOR 173 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6011324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_BOARDS 4 /* Don't change this value */ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ 6211324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Define the Moxa PCI vendor and device IDs. 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6711324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_ISA 0 6811324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby#define MOXA_BUS_TYPE_PCI 1 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum { 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_PCI = 1, 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C218_ISA, 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_PCI, 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_C320_ISA, 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MOXA_BOARD_CP204J, 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *moxa_brdname[] = 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo PCI series", 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C218 Turbo ISA series", 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo PCI series", 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "C320 Turbo ISA series", 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CP-204J series", 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_device_id moxa_pcibrds[] = { 895ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), 905ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C218_PCI }, 915ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), 925ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_C320_PCI }, 935ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), 945ebb4078af0dab866fdf57f84f72b9e9a7e8c6b8Jiri Slaby .driver_data = MOXA_BOARD_CP204J }, 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0 } 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE(pci, moxa_pcibrds); 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 100037182346f0991683cc7320a257c3f6089432ceeJiri Slabystruct moxa_port; 101037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1028f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic struct moxa_board_conf { 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int boardType; 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numPorts; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int busType; 1068f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 1078f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int loadstat; 1088f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 109037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *ports; 110037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1118f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *basemem; 1128f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intNdx; 1138f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intPend; 1148f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *intTable; 1158f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby} moxa_boards[MAX_BOARDS]; 1168f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 1178f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct mxser_mstatus { 1188f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby tcflag_t cflag; 1198f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int cts; 1208f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dsr; 1218f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int ri; 1228f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int dcd; 1239dff89cd82af7bccc706fed288b1c33a51c3b937Jiri Slaby}; 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1258f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxaq_str { 1268f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int inq; 1278f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby int outq; 1288f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystruct moxa_port { 131b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_board_conf *board; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int close_delay; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short closing_wait; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int blocked_open; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds long event; /* long req'd for set_bit --RR */ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asyncflags; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long statusflags; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cflag; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t open_wait; 14395e0791480af8347460d0cbe34a46eca7e77d0d0Jiri Slaby struct completion close_wait; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1458f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct timer_list emptyTimer; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1478f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby char chkPort; 1488f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby char lineCtrl; 1498f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby void __iomem *tableAddr; 1508f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby long curBaud; 1518f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby char DCDState; 1528f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby char lowChkFlag; 1538f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 1548f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ushort breakCnt; 1558f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby}; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* statusflags */ 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXSTOPPED 0x1 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LOWWAIT 0x2 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EMPTYWAIT 0x4 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define THROTTLE 0x8 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SERIAL_DO_RESTART 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor = MOXAMAJOR; 168037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxaCard; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for insmod */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 171d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned long baseaddr[MAX_BOARDS]; 172d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int type[MAX_BOARDS]; 173d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabystatic unsigned int numports[MAX_BOARDS]; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("William Chen"); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 180d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(type, uint, NULL, 0); 181d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(type, "card type: C218=2, C320=4"); 182d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(baseaddr, ulong, NULL, 0); 183d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(baseaddr, "base address"); 184d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slabymodule_param_array(numports, uint, NULL, 0); 185d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri SlabyMODULE_PARM_DESC(numports, "numports (ignored for C218)"); 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * static functions: 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *, struct file *); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *, struct file *); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *, const unsigned char *, int); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_chars(struct tty_struct *); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_put_char(struct tty_struct *, unsigned char); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *); 203606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void moxa_set_termios(struct tty_struct *, struct ktermios *); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file); 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long); 211db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *, struct ktermios *); 2126f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *, struct file *, 2138f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *); 2146f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *); 2156f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_check_xmit_empty(unsigned long); 2166f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *); 2176f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_receive_data(struct moxa_port *); 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * moxa board interface functions: 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 221b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaDriverIoctl(struct tty_struct *, unsigned int, unsigned long); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int MoxaDriverPoll(void); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int MoxaPortsOfCard(int); 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int MoxaPortIsValid(int); 225b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *); 226b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *); 227b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); 228b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *, int *, int *); 229b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *, int, int); 230b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); 231b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *); 232b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortDCDChange(struct moxa_port *); 233b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortDCDON(struct moxa_port *); 234b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *, int); 235b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortWriteData(struct moxa_port *, unsigned char *, int); 236b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortReadData(struct moxa_port *, struct tty_struct *tty); 237b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *); 238b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *); 239b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *); 240b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *); 241b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *); 242b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortResetBrkCnt(struct moxa_port *); 243b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortSendBreak(struct moxa_port *, int); 2448f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); 2458f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); 246b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable); 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 248b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations moxa_ops = { 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = moxa_open, 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = moxa_close, 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = moxa_write, 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = moxa_write_room, 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = moxa_flush_buffer, 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = moxa_chars_in_buffer, 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_chars = moxa_flush_chars, 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_char = moxa_put_char, 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = moxa_ioctl, 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = moxa_throttle, 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = moxa_unthrottle, 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = moxa_set_termios, 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = moxa_stop, 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = moxa_start, 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = moxa_hangup, 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = moxa_tiocmget, 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = moxa_tiocmset, 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 268aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic struct tty_driver *moxaDriver; 2698f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic struct moxa_port moxa_ports[MAX_PORTS]; 270aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slabystatic DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); 27134af946a22724c4e2b204957f2b24b22a0fb121cIngo Molnarstatic DEFINE_SPINLOCK(moxa_lock); 27233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 273037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) 274037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 275037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 276037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 277037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 278037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 1) 279037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 280037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 281037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 282037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 3) 283037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 284037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 285037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 286037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (model != 2) 287037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 288037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 289037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 290037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 291037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 292037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 293037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 294037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 295037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_check_fw(const void *ptr) 296037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 297037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const __le16 *lptr = ptr; 298037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 299037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (*lptr != cpu_to_le16(0x7980)) 300037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 301037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 302037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 303037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 304037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 305037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, 306037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 307037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 308037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 309037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 tmp; 310037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 311037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(HW_reset, baseAddr + Control_reg); /* reset */ 312037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 313037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memset_io(baseAddr, 0, 4096); 314037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr, buf, len); /* download BIOS */ 315037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(0, baseAddr + Control_reg); /* restart */ 316037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 317037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(2000); 318037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 319037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 320037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 321037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 322037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 323037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C218_KeyCode) 324037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 325037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 326037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 327037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C218_key); 328037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != CP204J_KeyCode) 329037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 330037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 331037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 332037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_key); 333037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != C320_KeyCode) 334037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 335037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tmp = readw(baseAddr + C320_status); 336037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (tmp != STS_init) { 337037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "moxa: bios upload failed -- CPU/Basic " 338037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "module not found\n"); 339037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 340037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 341037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 342037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 343037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 344037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 345037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 346037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "moxa: bios upload failed -- board not found\n"); 347037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 348037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 349037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 350037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, 351037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 352037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 353037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 354037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 355037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len < 7168) { 356037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "moxa: invalid 320 bios -- too short\n"); 357037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 358037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 359037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 360037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(len - 7168 - 2, baseAddr + C320bapi_len); 361037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(1, baseAddr + Control_reg); /* Select Page 1 */ 362037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); 363037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writeb(2, baseAddr + Control_reg); /* Select Page 2 */ 364037182346f0991683cc7320a257c3f6089432ceeJiri Slaby memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); 365037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 366037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 367037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 368037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 3695292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slabystatic int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, 370037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 371037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 372037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *baseAddr = brd->basemem; 373037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const u16 *uptr = ptr; 374037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t wlen, len2, j; 3755292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned long key, loadbuf, loadlen, checksum, checksum_ok; 3765292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby unsigned int i, retry, c320; 377037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 usum, keycode; 378037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 3795292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby c320 = brd->boardType == MOXA_BOARD_C320_PCI || 3805292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->boardType == MOXA_BOARD_C320_ISA; 3815292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : 3825292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby C218_KeyCode; 383037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 3845292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby switch (brd->boardType) { 3855292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_CP204J: 3865292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_ISA: 3875292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby case MOXA_BOARD_C218_PCI: 3885292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C218_key; 3895292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C218_LoadBuf; 3905292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C218DLoad_len; 3915292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C218check_sum; 3925292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C218chksum_ok; 3935292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 3945292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby default: 3955292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby key = C320_key; 3965292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby keycode = C320_KeyCode; 3975292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadbuf = C320_LoadBuf; 3985292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby loadlen = C320DLoad_len; 3995292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum = C320check_sum; 4005292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby checksum_ok = C320chksum_ok; 4015292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 402037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 403037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 404037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum = 0; 405037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 406037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < wlen; i++) 407037182346f0991683cc7320a257c3f6089432ceeJiri Slaby usum += le16_to_cpu(uptr[i]); 408037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry = 0; 409037182346f0991683cc7320a257c3f6089432ceeJiri Slaby do { 410037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen = len >> 1; 411037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j = 0; 412037182346f0991683cc7320a257c3f6089432ceeJiri Slaby while (wlen) { 413037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len2 = (wlen > 2048) ? 2048 : wlen; 414037182346f0991683cc7320a257c3f6089432ceeJiri Slaby wlen -= len2; 4155292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); 416037182346f0991683cc7320a257c3f6089432ceeJiri Slaby j += len2 << 1; 4175292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 4185292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(len2, baseAddr + loadlen); 4195292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 4205292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 4215292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 422037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 423037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 424037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 4255292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) != keycode) 426037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 427037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 4285292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + loadlen); 4295292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(usum, baseAddr + checksum); 4305292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 4315292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 100; i++) { 4325292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + key) == keycode) 433037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 434037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 435037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 436037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retry++; 4375292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); 4385292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readb(baseAddr + checksum_ok) != 1) 439037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 440037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 4415292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + key); 442037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 600; i++) { 443037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 444037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 445037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 446037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 447037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 448037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 449037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 4505292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (c320) { 4515292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ 4525292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3800, baseAddr + TMS320_PORT1); 4535292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3900, baseAddr + TMS320_PORT2); 4545292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(28499, baseAddr + TMS320_CLOCK); 4555292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } else { 4565292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3200, baseAddr + TMS320_PORT1); 4575292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0x3400, baseAddr + TMS320_PORT2); 4585292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(19999, baseAddr + TMS320_CLOCK); 4595292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 460037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 461037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(1, baseAddr + Disable_IRQ); 462037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(0, baseAddr + Magic_no); 463037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < 500; i++) { 464037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 465037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 466037182346f0991683cc7320a257c3f6089432ceeJiri Slaby msleep(10); 467037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 468037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 469037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EIO; 470037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 4715292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (c320) { 4725292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby j = readw(baseAddr + Module_cnt); 4735292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (j <= 0) 4745292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 4755292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby brd->numPorts = j * 8; 4765292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(j, baseAddr + Module_no); 4775292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby writew(0, baseAddr + Magic_no); 4785292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby for (i = 0; i < 600; i++) { 4795292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) == Magic_code) 4805292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby break; 4815292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby msleep(10); 4825292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby } 4835292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (readw(baseAddr + Magic_no) != Magic_code) 4845292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return -EIO; 485037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 486037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxaCard = 1; 487037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intNdx = baseAddr + IRQindex; 488037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intPend = baseAddr + IRQpending; 489037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->intTable = baseAddr + IRQtable; 490037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 491037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 492037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 493037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 494037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, 495037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len) 496037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 497037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void __iomem *ofsAddr, *baseAddr = brd->basemem; 498037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct moxa_port *port; 499037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int retval, i; 500037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 501037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len % 2) { 5025292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby printk(KERN_ERR "moxa: bios length is not even\n"); 503037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -EINVAL; 504037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 505037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 5065292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ 5075292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby if (retval) 5085292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby return retval; 5095292bcd38e4bcd147905941b5e37b5b0da1a5577Jiri Slaby 510037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 511037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 512037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 515037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 516b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 517037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->chkPort = 1; 518037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->curBaud = 9600L; 519037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 520037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 521037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 522037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 523037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_mask, ofsAddr + RX_mask); 524037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_mask, ofsAddr + TX_mask); 525037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); 526037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); 527037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 528037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); 529037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); 530037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 531037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 532037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 533037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 534037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port = brd->ports; 535037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (i = 0; i < brd->numPorts; i++, port++) { 536b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board = brd; 537037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->chkPort = 1; 538037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->curBaud = 9600L; 539037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->DCDState = 0; 540037182346f0991683cc7320a257c3f6089432ceeJiri Slaby port->tableAddr = baseAddr + Extern_table + 541037182346f0991683cc7320a257c3f6089432ceeJiri Slaby Extern_size * i; 542037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ofsAddr = port->tableAddr; 543037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->numPorts) { 544037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 8: 545037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_mask, ofsAddr + RX_mask); 546037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_mask, ofsAddr + TX_mask); 547037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); 548037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); 549037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); 550037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); 551037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 552037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 553037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 16: 554037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_mask, ofsAddr + RX_mask); 555037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_mask, ofsAddr + TX_mask); 556037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); 557037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); 558037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); 559037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); 560037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 561037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 562037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 24: 563037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_mask, ofsAddr + RX_mask); 564037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_mask, ofsAddr + TX_mask); 565037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); 566037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); 567037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); 568037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 569037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 570037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case 32: 571037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_mask, ofsAddr + RX_mask); 572037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_mask, ofsAddr + TX_mask); 573037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_ofs, ofsAddr + Ofs_txb); 574037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); 575037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); 576037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); 577037182346f0991683cc7320a257c3f6089432ceeJiri Slaby writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); 578037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 579037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 580037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 581037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 582037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 583037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->loadstat = 1; 584037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 585037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 586037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 587037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) 588037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 589037182346f0991683cc7320a257c3f6089432ceeJiri Slaby void *ptr = fw->data; 590037182346f0991683cc7320a257c3f6089432ceeJiri Slaby char rsn[64]; 591037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u16 lens[5]; 592037182346f0991683cc7320a257c3f6089432ceeJiri Slaby size_t len; 593037182346f0991683cc7320a257c3f6089432ceeJiri Slaby unsigned int a, lenp, lencnt; 594037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret = -EINVAL; 595037182346f0991683cc7320a257c3f6089432ceeJiri Slaby struct { 596037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le32 magic; /* 0x34303430 */ 597037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved1[2]; 598037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 type; /* UNIX = 3 */ 599037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 model; /* C218T=1, C320T=2, CP204=3 */ 600037182346f0991683cc7320a257c3f6089432ceeJiri Slaby u8 reserved2[8]; 601037182346f0991683cc7320a257c3f6089432ceeJiri Slaby __le16 len[5]; 602037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } *hdr = ptr; 603037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 604037182346f0991683cc7320a257c3f6089432ceeJiri Slaby BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); 605037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 606037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (fw->size < MOXA_FW_HDRLEN) { 607037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "too short (even header won't fit)"); 608037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 609037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 610037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->magic != cpu_to_le32(0x30343034)) { 611037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); 612037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 613037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 614037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->type != 3) { 615037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for linux, type is %u", hdr->type); 616037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 617037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 618037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_check_fw_model(brd, hdr->model)) { 619037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "not for this card, model is %u", hdr->model); 620037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 621037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 622037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 623037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len = MOXA_FW_HDRLEN; 624037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lencnt = hdr->model == 2 ? 5 : 3; 625037182346f0991683cc7320a257c3f6089432ceeJiri Slaby for (a = 0; a < ARRAY_SIZE(lens); a++) { 626037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lens[a] = le16_to_cpu(hdr->len[a]); 627037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (lens[a] && len + lens[a] <= fw->size && 628037182346f0991683cc7320a257c3f6089432ceeJiri Slaby moxa_check_fw(&fw->data[len])) 629037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_WARNING "moxa firmware: unexpected input " 630037182346f0991683cc7320a257c3f6089432ceeJiri Slaby "at offset %u, but going on\n", (u32)len); 631037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!lens[a] && a < lencnt) { 632037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "too few entries in fw file"); 633037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 634037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 635037182346f0991683cc7320a257c3f6089432ceeJiri Slaby len += lens[a]; 636037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 637037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 638037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (len != fw->size) { 639037182346f0991683cc7320a257c3f6089432ceeJiri Slaby sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, 640037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (u32)len); 641037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 642037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 643037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 644037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += MOXA_FW_HDRLEN; 645037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp = 0; /* bios */ 646037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 647037182346f0991683cc7320a257c3f6089432ceeJiri Slaby strcpy(rsn, "read above"); 648037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 649037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_bios(brd, ptr, lens[lenp]); 650037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 651037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 652037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 653037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* we skip the tty section (lens[1]), since we don't need it */ 654037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 655037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; /* comm */ 656037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (hdr->model == 2) { 658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_320b(brd, ptr, lens[lenp]); 659037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 660037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 661037182346f0991683cc7320a257c3f6089432ceeJiri Slaby /* skip another tty */ 662037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ptr += lens[lenp] + lens[lenp + 1]; 663037182346f0991683cc7320a257c3f6089432ceeJiri Slaby lenp += 2; 664037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 665037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 666037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_code(brd, ptr, lens[lenp]); 667037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) 668037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err; 669037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 670037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return 0; 671037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr: 672037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); 673037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 674037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 675037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 676037182346f0991683cc7320a257c3f6089432ceeJiri Slabystatic int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) 677037182346f0991683cc7320a257c3f6089432ceeJiri Slaby{ 678037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const struct firmware *fw; 679037182346f0991683cc7320a257c3f6089432ceeJiri Slaby const char *file; 680037182346f0991683cc7320a257c3f6089432ceeJiri Slaby int ret; 681037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 682037182346f0991683cc7320a257c3f6089432ceeJiri Slaby switch (brd->boardType) { 683037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_ISA: 684037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_C218_PCI: 685037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c218tunx.cod"; 686037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 687037182346f0991683cc7320a257c3f6089432ceeJiri Slaby case MOXA_BOARD_CP204J: 688037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "cp204unx.cod"; 689037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 690037182346f0991683cc7320a257c3f6089432ceeJiri Slaby default: 691037182346f0991683cc7320a257c3f6089432ceeJiri Slaby file = "c320tunx.cod"; 692037182346f0991683cc7320a257c3f6089432ceeJiri Slaby break; 693037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 694037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 695037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = request_firmware(&fw, file, dev); 696037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (ret) { 697037182346f0991683cc7320a257c3f6089432ceeJiri Slaby printk(KERN_ERR "request_firmware failed\n"); 698037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto end; 699037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 700037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 701037182346f0991683cc7320a257c3f6089432ceeJiri Slaby ret = moxa_load_fw(brd, fw); 702037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 703037182346f0991683cc7320a257c3f6089432ceeJiri Slaby release_firmware(fw); 704037182346f0991683cc7320a257c3f6089432ceeJiri Slabyend: 705037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return ret; 706037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 707037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 7099cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic int __devinit moxa_pci_probe(struct pci_dev *pdev, 7109cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby const struct pci_device_id *ent) 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7129cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *board; 7139cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby unsigned int i; 7149cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int board_type = ent->driver_data; 7159cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby int retval; 7169cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7179cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = pci_enable_device(pdev); 7187aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (retval) { 7197aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't enable pci device\n"); 7209cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 7217aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 7229cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7239cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby for (i = 0; i < MAX_BOARDS; i++) 7249cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (moxa_boards[i].basemem == NULL) 7259cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby break; 7269cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7279cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby retval = -ENODEV; 7289cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby if (i >= MAX_BOARDS) { 7297aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " 7309cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby "found. Board is ignored.\n", MAX_BOARDS); 7319cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby goto err; 7329cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby } 7339cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7349cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby board = &moxa_boards[i]; 735037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->ports = &moxa_ports[i * MAX_PORTS_PER_BOARD]; 736e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 737e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby retval = pci_request_region(pdev, 2, "moxa-base"); 738e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby if (retval) { 739e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby dev_err(&pdev->dev, "can't request pci region 2\n"); 740e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err; 741e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby } 742e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby 743e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); 7447aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby if (board->basemem == NULL) { 7457aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby dev_err(&pdev->dev, "can't remap io space 2\n"); 746e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby goto err_reg; 7477aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby } 7489cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->boardType = board_type; 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (board_type) { 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_ISA: 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_C218_PCI: 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 8; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_BOARD_CP204J: 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 4; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->numPorts = 0; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board->busType = MOXA_BUS_TYPE_PCI; 764a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 765037182346f0991683cc7320a257c3f6089432ceeJiri Slaby retval = moxa_init_board(board, &pdev->dev); 766037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (retval) 767037182346f0991683cc7320a257c3f6089432ceeJiri Slaby goto err_base; 768037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 7699cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby pci_set_drvdata(pdev, board); 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 772037182346f0991683cc7320a257c3f6089432ceeJiri Slabyerr_base: 773037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(board->basemem); 774037182346f0991683cc7320a257c3f6089432ceeJiri Slaby board->basemem = NULL; 775e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slabyerr_reg: 776e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 7779cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabyerr: 7789cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby return retval; 7799cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby} 7809cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 7819cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slabystatic void __devexit moxa_pci_remove(struct pci_dev *pdev) 7829cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby{ 7839cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby struct moxa_board_conf *brd = pci_get_drvdata(pdev); 7849cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby 785e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby iounmap(brd->basemem); 7869cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby brd->basemem = NULL; 787e46a5e3ff06b70690d567bdc81faf6c1c32e742fJiri Slaby pci_release_region(pdev, 2); 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 789a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 790a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slabystatic struct pci_driver moxa_pci_driver = { 791a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .name = "moxa", 792a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .id_table = moxa_pcibrds, 793a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .probe = moxa_pci_probe, 794a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby .remove = __devexit_p(moxa_pci_remove) 795a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby}; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_PCI */ 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init moxa_init(void) 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8008f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 801d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby unsigned int i, isabrds = 0; 802d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby int retval = 0; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8047aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_INFO "MOXA Intellio family driver version %s\n", 8057aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby MOXA_VERSION); 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver = alloc_tty_driver(MAX_PORTS + 1); 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!moxaDriver) 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->owner = THIS_MODULE; 8119b4e3b13b147e9b737de63188a9ae740eaa8c36dSergey Vlasov moxaDriver->name = "ttyMX"; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->major = ttymajor; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->minor_start = 0; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->subtype = SERIAL_TYPE_NORMAL; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios = tty_std_termios; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 818606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ispeed = 9600; 819606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox moxaDriver->init_termios.c_ospeed = 9600; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaDriver->flags = TTY_DRIVER_REAL_RAW; 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(moxaDriver, &moxa_ops); 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8238f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) { 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->type = PORT_16550A; 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->close_delay = 5 * HZ / 10; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->closing_wait = 30 * HZ; 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&ch->open_wait); 82995e0791480af8347460d0cbe34a46eca7e77d0d0Jiri Slaby init_completion(&ch->close_wait); 8308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 8316f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby setup_timer(&ch->emptyTimer, moxa_check_xmit_empty, 8328f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby (unsigned long)ch); 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8357aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa tty devices major number = %d\n", ttymajor); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_register_driver(moxaDriver)) { 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 843aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 845d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby /* Find the boards defined from module args. */ 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MODULE 847d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby { 848d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby struct moxa_board_conf *brd = moxa_boards; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_BOARDS; i++) { 850d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!baseaddr[i]) 851d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby break; 852d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (type[i] == MOXA_BOARD_C218_ISA || 853d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby type[i] == MOXA_BOARD_C320_ISA) { 8547aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", 855d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds + 1, moxa_brdname[type[i] - 1], 856d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 857d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->boardType = type[i]; 858037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->ports = &moxa_ports[isabrds * MAX_PORTS_PER_BOARD]; 859d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : 860d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby numports[i]; 861d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->busType = MOXA_BUS_TYPE_ISA; 862d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd->basemem = ioremap(baseaddr[i], 0x4000); 863d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (!brd->basemem) { 864d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby printk(KERN_ERR "moxa: can't remap %lx\n", 865d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby baseaddr[i]); 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 868037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (moxa_init_board(brd, NULL)) { 869037182346f0991683cc7320a257c3f6089432ceeJiri Slaby iounmap(brd->basemem); 870037182346f0991683cc7320a257c3f6089432ceeJiri Slaby brd->basemem = NULL; 871037182346f0991683cc7320a257c3f6089432ceeJiri Slaby continue; 872037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 873d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby 874d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby brd++; 875d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby isabrds++; 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 878d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby } 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 880a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI 882a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = pci_register_driver(&moxa_pci_driver); 883a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby if (retval) { 884a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby printk(KERN_ERR "Can't register moxa pci driver!\n"); 885d353eca4e0480fddcb088c4692e1edba0a82eac9Jiri Slaby if (isabrds) 886a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby retval = 0; 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 889a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 890a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby return retval; 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit moxa_exit(void) 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 897c251ae0d7514563c7fdace0d390175454761228bJiri Slaby del_timer_sync(&moxaTimer); 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_PORTS; i++) 9008f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby del_timer_sync(&moxa_ports[i].emptyTimer); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_unregister_driver(moxaDriver)) 9037aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_ERR "Couldn't unregister MOXA Intellio family " 9047aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "serial driver\n"); 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(moxaDriver); 90686fbf1486a44a4bce4fdcbe3665a7d8a62ba958aJiri Slaby 9079cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#ifdef CONFIG_PCI 908a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby pci_unregister_driver(&moxa_pci_driver); 9099cde5bf027556bd1e58caa14bfe8cdba64192eddJiri Slaby#endif 910a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby 911a784bf7c195f9eca1188562c54952e4bf9791437Jiri Slaby for (i = 0; i < MAX_BOARDS; i++) 9128f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (moxa_boards[i].basemem) 9138f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby iounmap(moxa_boards[i].basemem); 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(moxa_init); 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(moxa_exit); 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_open(struct tty_struct *tty, struct file *filp) 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9218f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 92511324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!MoxaPortIsValid(port)) { 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = NULL; 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-ENODEV); 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9348f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ch = &moxa_ports[port]; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count++; 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = ch; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = tty; 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) { 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags = 0; 940db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, tty->termios); 941b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 1, 1); 942b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortEnable(ch); 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_INITIALIZED; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9456f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby retval = moxa_block_till_ready(tty, filp, ch); 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxa_unthrottle(tty); 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->type == PORT_16550A) { 950b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaSetFifo(ch, 1); 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 952b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaSetFifo(ch, 0); 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (retval); 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_close(struct tty_struct *tty, struct file *filp) 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9608f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 96311324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port == MAX_PORTS) { 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!MoxaPortIsValid(port)) { 9687aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("Invalid portno in moxa_close\n"); 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = NULL; 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->driver_data == NULL) { 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp)) { 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9788f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ch = (struct moxa_port *) tty->driver_data; 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->count == 1) && (ch->count != 1)) { 9817aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count; " 9827aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "tty->count is 1, ch->count is %d\n", ch->count); 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 1; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (--ch->count < 0) { 9867aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby printk(KERN_WARNING "moxa_close: bad serial port count, " 9877aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby "device=%s\n", tty->name); 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->count) { 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_CLOSING; 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->cflag = tty->termios->c_cflag; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_INITIALIZED) { 9976f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ 999b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby del_timer_sync(&ch->emptyTimer); 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10016f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_shut_down(ch); 1002b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 2); 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->driver->flush_buffer) 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver->flush_buffer(tty); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_flush(tty); 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->closing = 0; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->event = 0; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = NULL; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->blocked_open) { 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->close_delay) { 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(ch->close_delay)); 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); 101895e0791480af8347460d0cbe34a46eca7e77d0d0Jiri Slaby complete_all(&ch->close_wait); 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write(struct tty_struct *tty, 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1024b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1026b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 1029b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return 0; 103033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 103133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_lock_irqsave(&moxa_lock, flags); 1032b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby len = MoxaPortWriteData(ch, (unsigned char *) buf, count); 103333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_unlock_irqrestore(&moxa_lock, flags); 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /********************************************* 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( !(ch->statusflags & LOWWAIT) && 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((len != count) || (MoxaPortTxFree(port) <= 100)) ) 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ************************************************/ 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (len); 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_write_room(struct tty_struct *tty) 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10458f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->stopped) 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 1049b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ch = tty->driver_data; 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 1052b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby return MoxaPortTxFree(ch); 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_buffer(struct tty_struct *tty) 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1057b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1061b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 1); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_chars_in_buffer(struct tty_struct *tty) 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1067b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sigh...I have to check if driver_data is NULL here, because 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if an open() fails, the TTY subsystem eventually calls 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty_wait_until_sent(), which calls the driver's chars_in_buffer() 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * routine. And since the open() failed, we return 0 here. TDJ 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 1078b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby chars = MoxaPortTxQueue(ch); 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chars) { 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Make it possible to wakeup anything waiting for output 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in tty_ioctl.c, etc. 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & EMPTYWAIT)) 10856f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (chars); 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_flush_chars(struct tty_struct *tty) 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Don't think I need this, because this is called to empty the TX 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buffer for the 16450, 16550, etc. 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_put_char(struct tty_struct *tty, unsigned char c) 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1100b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 110533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_lock_irqsave(&moxa_lock, flags); 1106b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortWriteData(ch, &c, 1); 110733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_unlock_irqrestore(&moxa_lock, flags); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /************************************************ 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) ) 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *************************************************/ 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= LOWWAIT; 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmget(struct tty_struct *tty, struct file *file) 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1116b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag = 0, dtr, rts; 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1119b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if ((tty->index != MAX_PORTS) && (!ch)) 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EINVAL); 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1122b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DTR; 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_RTS; 1127b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby dtr = MoxaPortLineStatus(ch); 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 1) 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CTS; 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 2) 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_DSR; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr & 4) 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag |= TIOCM_CD; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return flag; 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_tiocmset(struct tty_struct *tty, struct file *file, 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1140b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port; 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dtr, rts; 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 114411324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((port != MAX_PORTS) && (!ch)) 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EINVAL); 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1148b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortGetLineOut(ch, &dtr, &rts); 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 1; 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 1; 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = 0; 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dtr = 0; 1157b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, dtr, rts); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxa_ioctl(struct tty_struct *tty, struct file *file, 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cmd, unsigned long arg) 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1164b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *ch = tty->driver_data; 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds register int port; 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __user *argp = (void __user *)arg; 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 116911324edd4ad34981764b25bed44d46a1507b62e1Jiri Slaby port = tty->index; 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((port != MAX_PORTS) && (!ch)) 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EINVAL); 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TCSBRK: /* SVID version: non-zero arg --> no break */ 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = tty_check_change(tty); 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (retval); 11786f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 0); 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!arg) 1181b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortSendBreak(ch, 0); 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TCSBRKP: /* support for POSIX tcsendbreak() */ 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = tty_check_change(tty); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (retval); 11876f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_setup_empty_event(tty); 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, 0); 1189b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortSendBreak(ch, arg); 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCGSOFTCAR: 11929e9fc313ffa3cb92f7f81a8e076566bc9d582351Jiri Slaby return put_user(C_CLOCAL(tty) ? 1 : 0, (int __user *)argp); 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCSSOFTCAR: 11949e9fc313ffa3cb92f7f81a8e076566bc9d582351Jiri Slaby if (get_user(retval, (int __user *)argp)) 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = retval; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg ? CLOCAL : 0)); 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (C_CLOCAL(tty)) 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_CHECK_CD; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_CHECK_CD; 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCGSERIAL: 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return moxa_get_serial_info(ch, argp); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCSSERIAL: 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return moxa_set_serial_info(ch, argp); 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1210b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby retval = MoxaDriverIoctl(tty, cmd, arg); 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (retval); 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_throttle(struct tty_struct *tty) 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12178f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= THROTTLE; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_unthrottle(struct tty_struct *tty) 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12248f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~THROTTLE; 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_set_termios(struct tty_struct *tty, 1230606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios *old_termios) 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12328f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1236db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox moxa_set_tty_param(tty, old_termios); 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(old_termios->c_cflag & CLOCAL) && 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (tty->termios->c_cflag & CLOCAL)) 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_stop(struct tty_struct *tty) 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12448f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1248b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxDisable(ch); 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= TXSTOPPED; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_start(struct tty_struct *tty) 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12558f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch == NULL) 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & TXSTOPPED)) 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1263b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortTxEnable(ch); 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~TXSTOPPED; 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_hangup(struct tty_struct *tty) 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12698f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = (struct moxa_port *) tty->driver_data; 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxa_flush_buffer(tty); 12726f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_shut_down(ch); 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->event = 0; 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count = 0; 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->tty = NULL; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxa_poll(unsigned long ignored) 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds register int card; 12838f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tp; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, ports; 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds del_timer(&moxaTimer); 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (MoxaDriverPoll() < 0) { 1290aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((ports = MoxaPortsOfCard(card)) <= 0) 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 12968f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ch = &moxa_ports[card * MAX_PORTS_PER_BOARD]; 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < ports; i++, ch++) { 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((ch->asyncflags & ASYNC_INITIALIZED) == 0) 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->statusflags & THROTTLE) && 1301b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby (MoxaPortRxQueue(ch) > 0)) 13026f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_receive_data(ch); 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tp = ch->tty) == 0) 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->statusflags & LOWWAIT) { 1306b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (MoxaPortTxQueue(ch) <= WAKEUP_CHARS) { 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tp->stopped) { 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~LOWWAIT; 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tp); 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1313b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch) > 0)) { 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_insert_flip_char(tp, 0, TTY_BREAK); 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_schedule_flip(tp); 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1317b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (MoxaPortDCDChange(ch)) { 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_CHECK_CD) { 1319b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (MoxaPortDCDON(ch)) 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&ch->open_wait); 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 1322ba196df3d6432c5c20429e8e447c5db7abedb8f3Jiri Slaby tty_hangup(tp); 1323ba196df3d6432c5c20429e8e447c5db7abedb8f3Jiri Slaby wake_up_interruptible(&ch->open_wait); 1324ba196df3d6432c5c20429e8e447c5db7abedb8f3Jiri Slaby ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331aa7e5221fb47badbea618cc62704d6e4a4bcce15Jiri Slaby mod_timer(&moxaTimer, jiffies + HZ / 50); 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************/ 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1336db1acaa632870ec87b65e062bc72ca375837a1f6Alan Coxstatic void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1338606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox register struct ktermios *ts; 13398f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 1340db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox int rts, cts, txflow, rxflow, xany, baud; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13428f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ch = (struct moxa_port *) tty->driver_data; 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts = tty->termios; 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CLOCAL) 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_CHECK_CD; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_CHECK_CD; 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = txflow = rxflow = xany = 0; 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_cflag & CRTSCTS) 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rts = cts = 1; 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXON) 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds txflow = 1; 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXOFF) 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rxflow = 1; 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts->c_iflag & IXANY) 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xany = 1; 1357db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox 1358db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Clear the features we don't support */ 1359db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox ts->c_cflag &= ~CMSPAR; 1360b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); 1361b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); 1362db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox if (baud == -1) 1363db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = tty_termios_baud_rate(old_termios); 1364db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox /* Not put the baud rate into the termios data */ 1365db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox tty_encode_baud_rate(tty, baud, baud); 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13686f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, 13698f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch) 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait,current); 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int do_clocal = C_CLOCAL(tty); 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If the device is in the middle of being closed, then block 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until it's done, and then try again. 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) { 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_CLOSING) 138295e0791480af8347460d0cbe34a46eca7e77d0d0Jiri Slaby wait_for_completion_interruptible(&ch->close_wait); 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef SERIAL_DO_RESTART 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_HUP_NOTIFY) 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EAGAIN); 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-ERESTARTSYS); 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EAGAIN); 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If non-blocking mode is set, then make the check up front 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and then exit. 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (filp->f_flags & O_NONBLOCK) { 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_NORMAL_ACTIVE; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Block waiting for the carrier detect and the line to become free 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&ch->open_wait, &wait); 14057aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("block_til_ready before block: ttys%d, count = %d\n", 1406b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby tty->index, ch->count); 140733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_lock_irqsave(&moxa_lock, flags); 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty_hung_up_p(filp)) 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count--; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->blocked_open++; 141133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_unlock_irqrestore(&moxa_lock, flags); 141233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) { 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp) || 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(ch->asyncflags & ASYNC_INITIALIZED)) { 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef SERIAL_DO_RESTART 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->asyncflags & ASYNC_HUP_NOTIFY) 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EAGAIN; 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -ERESTARTSYS; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EAGAIN; 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal || 1428b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDCDON(ch))) 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -ERESTARTSYS; 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&ch->open_wait, &wait); 143933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 144033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_lock_irqsave(&moxa_lock, flags); 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty_hung_up_p(filp)) 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->count++; 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->blocked_open--; 144433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_unlock_irqrestore(&moxa_lock, flags); 14457aeb95daf37dbd72f63cdd52d86a8b5d89e59394Jiri Slaby pr_debug("block_til_ready after blocking: ttys%d, count = %d\n", 1446b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby tty->index, ch->count); 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (retval); 144933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox /* FIXME: review to see if we need to use set_bit on these */ 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags |= ASYNC_NORMAL_ACTIVE; 145133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14546f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_setup_empty_event(struct tty_struct *tty) 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14568f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch = tty->driver_data; 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 145933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_lock_irqsave(&moxa_lock, flags); 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags |= EMPTYWAIT; 1461b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby mod_timer(&ch->emptyTimer, jiffies + HZ); 146233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox spin_unlock_irqrestore(&moxa_lock, flags); 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14656f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_check_xmit_empty(unsigned long data) 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14678f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *ch; 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14698f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ch = (struct moxa_port *) data; 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch->tty && (ch->statusflags & EMPTYWAIT)) { 1471b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (MoxaPortTxQueue(ch) == 0) { 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~EMPTYWAIT; 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(ch->tty); 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1476b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby mod_timer(&ch->emptyTimer, round_jiffies(jiffies + HZ)); 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->statusflags &= ~EMPTYWAIT; 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14816f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_shut_down(struct moxa_port *ch) 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tp; 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ch->asyncflags & ASYNC_INITIALIZED)) 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tp = ch->tty; 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1490b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortDisable(ch); 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we're a modem control device and HUPCL is on, drop RTS & DTR. 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tp->termios->c_cflag & HUPCL) 1496b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortLineCtrl(ch, 0, 0); 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ch->asyncflags &= ~ASYNC_INITIALIZED; 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15016f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_receive_data(struct moxa_port *ch) 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tp; 1504606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios *ts; 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts = NULL; 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tp = ch->tty; 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tp) 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts = tp->termios; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /************************************************** 1512037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if ( !tp || !ts || !(ts->c_cflag & CREAD) ) { 1513037182346f0991683cc7320a257c3f6089432ceeJiri Slaby *****************************************************/ 1514037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if (!tp || !ts) { 1515b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortFlushData(ch, 0); 1516037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return; 1517037182346f0991683cc7320a257c3f6089432ceeJiri Slaby } 1518037182346f0991683cc7320a257c3f6089432ceeJiri Slaby spin_lock_irqsave(&moxa_lock, flags); 1519b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaPortReadData(ch, tp); 1520037182346f0991683cc7320a257c3f6089432ceeJiri Slaby spin_unlock_irqrestore(&moxa_lock, flags); 1521037182346f0991683cc7320a257c3f6089432ceeJiri Slaby tty_schedule_flip(tp); 1522037182346f0991683cc7320a257c3f6089432ceeJiri Slaby} 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Query 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct mon_str { 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tick; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rxcnt[MAX_PORTS]; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int txcnt[MAX_PORTS]; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DCD_changed 0x01 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DCD_oldstate 0x80 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int moxaLowWaterChk; 15389dff89cd82af7bccc706fed288b1c33a51c3b937Jiri Slabystatic struct mon_str moxaLog; 15399fa372a850b9ffcb177eb9ac0b75963b2f9af233Jiri Slabystatic int moxaFuncTout = HZ / 2; 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxafunc(void __iomem *, int, ushort); 15426f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_wait_finish(void __iomem *); 15436f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_low_water_check(void __iomem *); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver level functions: * 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); * 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. MoxaDriverPoll(void); * 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA 0x400 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GETDATACOUNT (MOXA + 23) 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_IOQUEUE (MOXA + 27) 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_FLUSH_QUEUE (MOXA + 28) 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_CONF (MOXA + 35) /* configuration */ 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_MAJOR (MOXA + 63) 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GET_CUMAJOR (MOXA + 64) 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MOXA_GETMSTATUS (MOXA + 65) 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlushData(struct moxa_port *port, int mode) 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((mode < 0) || (mode > 2)) 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1566b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, mode); 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode != 1) { 1569b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 0; 15706f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1574b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaDriverIoctl(struct tty_struct *tty, unsigned int cmd, 1575b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby unsigned long arg) 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1577b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby struct moxa_port *port = tty->driver_data; 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status; 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __user *argp = (void __user *)arg; 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1582b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (tty->index == MAX_PORTS) { 1583037182346f0991683cc7320a257c3f6089432ceeJiri Slaby if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_GETDATACOUNT) && 1584037182346f0991683cc7320a257c3f6089432ceeJiri Slaby (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) && 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS)) 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EINVAL); 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_GETDATACOUNT: 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLog.tick = jiffies; 15919dff89cd82af7bccc706fed288b1c33a51c3b937Jiri Slaby if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str))) 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_FLUSH_QUEUE: 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortFlushData(port, arg); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 15978f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby case MOXA_GET_IOQUEUE: { 15988f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxaq_str __user *argm = argp; 1599181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby struct moxaq_str tmp; 16008f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 16018f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby for (i = 0; i < MAX_PORTS; i++, argm++) { 1602181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby memset(&tmp, 0, sizeof(tmp)); 1603181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby if (moxa_ports[i].chkPort) { 1604b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby tmp.inq = MoxaPortRxQueue(&moxa_ports[i]); 1605b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby tmp.outq = MoxaPortTxQueue(&moxa_ports[i]); 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1607181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) 16088f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby return -EFAULT; 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 16118f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby } case MOXA_GET_OQUEUE: 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = MoxaPortTxQueue(port); 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return put_user(i, (unsigned long __user *)argp); 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_GET_IQUEUE: 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = MoxaPortRxQueue(port); 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return put_user(i, (unsigned long __user *)argp); 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_GET_MAJOR: 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(copy_to_user(argp, &ttymajor, sizeof(int))) 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MOXA_GET_CUMAJOR: 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = 0; 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(copy_to_user(argp, &i, sizeof(int))) 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16268f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby case MOXA_GETMSTATUS: { 16278f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct mxser_mstatus __user *argm = argp; 1628181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby struct mxser_mstatus tmp; 16298f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_port *p; 16308f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby 16318f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby for (i = 0; i < MAX_PORTS; i++, argm++) { 16328f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby p = &moxa_ports[i]; 1633181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby memset(&tmp, 0, sizeof(tmp)); 16348f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (!p->chkPort) { 16358f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby goto copy; 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1637b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby status = MoxaPortLineStatus(p); 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & 1) 1639181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby tmp.cts = 1; 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & 2) 1641181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby tmp.dsr = 1; 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & 4) 1643181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby tmp.dcd = 1; 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16468f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (!p->tty || !p->tty->termios) 1647181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby tmp.cflag = p->cflag; 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1649181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby tmp.cflag = p->tty->termios->c_cflag; 16508f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabycopy: 1651181d6f4fac7f01ede95284954ea1231939dca0d9Jiri Slaby if (copy_to_user(argm, &tmp, sizeof(tmp))) 16528f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby return -EFAULT; 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1657037182346f0991683cc7320a257c3f6089432ceeJiri Slaby 1658037182346f0991683cc7320a257c3f6089432ceeJiri Slaby return -ENOIOCTLCMD; 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint MoxaDriverPoll(void) 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16638f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby struct moxa_board_conf *brd; 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds register ushort temp; 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds register int card; 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ip; 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int port, p, ports; 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (moxaCard == 0) 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-1); 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (card = 0; card < MAX_BOARDS; card++) { 16738f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby brd = &moxa_boards[card]; 16748f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (brd->loadstat == 0) 167501cfaf0d12ae5fa092cc916ca4066ee1598e857dDirk Eibach continue; 16768f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if ((ports = brd->numPorts) == 0) 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 16788f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (readb(brd->intPend) == 0xff) { 16798f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ip = brd->intTable + readb(brd->intNdx); 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = card * MAX_PORTS_PER_BOARD; 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ports <<= 1; 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (port = 0; port < ports; port += 2, p++) { 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((temp = readw(ip + port)) != 0) { 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ip + port); 16858f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ofsAddr = moxa_ports[p].tableAddr; 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp & IntrTx) 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat); 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp & IntrBreak) { 16898f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby moxa_ports[p].breakCnt++; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp & IntrLine) { 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (readb(ofsAddr + FlagStat) & DCD_state) { 16938f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if ((moxa_ports[p].DCDState & DCD_oldstate) == 0) 16948f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby moxa_ports[p].DCDState = (DCD_oldstate | 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DCD_changed); 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16978f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (moxa_ports[p].DCDState & DCD_oldstate) 16988f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby moxa_ports[p].DCDState = DCD_changed; 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17038f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby writeb(0, brd->intPend); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (moxaLowWaterChk) { 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = card * MAX_PORTS_PER_BOARD; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (port = 0; port < ports; port++, p++) { 17088f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (moxa_ports[p].lowChkFlag) { 17098f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby moxa_ports[p].lowChkFlag = 0; 17108f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby ofsAddr = moxa_ports[p].tableAddr; 17116f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_low_water_check(ofsAddr); 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 0; 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Card level function: * 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. MoxaPortsOfCard(int cardno); * 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint MoxaPortsOfCard(int cardno) 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (moxa_boards[cardno].boardType == 0) 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (moxa_boards[cardno].numPorts); 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Port level functions: * 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. MoxaPortIsValid(int port); * 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. MoxaPortEnable(int port); * 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. MoxaPortDisable(int port); * 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4. MoxaPortGetMaxBaud(int port); * 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6. MoxaPortSetBaud(int port, long baud); * 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8. MoxaPortSetTermio(int port, unsigned char *termio); * 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); * 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); * 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12. MoxaPortLineStatus(int port); * 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 13. MoxaPortDCDChange(int port); * 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 14. MoxaPortDCDON(int port); * 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 15. MoxaPortFlushData(int port, int mode); * 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); * 174833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * 17. MoxaPortReadData(int port, struct tty_struct *tty); * 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 20. MoxaPortTxQueue(int port); * 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 21. MoxaPortTxFree(int port); * 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 22. MoxaPortRxQueue(int port); * 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 24. MoxaPortTxDisable(int port); * 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 25. MoxaPortTxEnable(int port); * 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 27. MoxaPortResetBrkCnt(int port); * 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30. MoxaPortSendBreak(int port, int ticks); * 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Port Number Description: 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the port number using in MOXA driver functions will be 0 to 31 for 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to 127 for fourth. For example, if you setup three MOXA boards, 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * first board is C218, second board is C320-16 and third board is 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * C320-32. The port number of first board (C218 - 8 ports) is from 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 to 7. The port number of second board (C320 - 16 ports) is form 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32 to 47. The port number of third board (C320 - 32 ports) is from 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 127 will be invalid. 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Moxa Functions Description: 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 1: Driver initialization routine, this routine must be 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called when initialized driver. 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaDriverInit(); 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 2: Moxa driver private IOCTL command processing. 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int cmd : IOCTL command 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned long arg : IOCTL argument 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 (OK) 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -EINVAL 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -ENOIOCTLCMD 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 3: Moxa driver polling process routine. 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaDriverPoll(void); 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 ; polling O.K. 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -1 : no any Moxa card. 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 4: Get the ports of this card. 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortsOfCard(int cardno); 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int cardno : card number (0 - 3) 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this card is invalid 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8/16/24/32 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 5: Check this port is valid or invalid 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortIsValid(int port); 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127, ref port description) 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : this port is valid 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 6: Enable this port to start Tx/Rx data. 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortEnable(int port); 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 7: Disable this port 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortDisable(int port); 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 8: Get the maximun available baud rate of this port. 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long MoxaPortGetMaxBaud(int port); 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 38400/57600/115200 bps 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 10: Setting baud rate of this port. 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long MoxaPortSetBaud(int port, long baud); 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * long baud : baud rate (50 - 115200) 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : this port is invalid or baud < 50 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 50 - 115200 : the real baud rate set to the port, if 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the argument baud is large than maximun 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * available baud rate, the real setting 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * baud rate will be the maximun baud rate. 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 12: Configure the port. 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 1856606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 1858606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox * struct ktermios * termio : termio structure pointer 1859c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox * speed_t baud : baud rate 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid or termio == NULL 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : setting O.K. 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 13: Get the DTR/RTS state of this port. 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * dtrState : pointer to INT to receive the current DTR 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int * rtsState : pointer to INT to receive the current RTS 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state. (if NULL, this function will not 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * write to this address) 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: -1 : this port is invalid 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : O.K. 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 14: Setting the DTR/RTS output state of this port. 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int dtrState : DTR output state (0: off, 1: on) 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsState : RTS output state (0: off, 1: on) 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 15: Setting the flow control of this port. 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow,int xany); 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rtsFlow : H/W RTS flow control (0: no, 1: yes) 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ctsFlow : H/W CTS flow control (0: no, 1: yes) 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int xany : S/W XANY flow control (0: no, 1: yes) 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 16: Get ths line status of this port 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortLineStatus(int port); 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: Bit 0 - CTS state (0: off, 1: on) 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 1 - DSR state (0: off, 1: on) 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bit 2 - DCD state (0: off, 1: on) 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 17: Check the DCD state has changed since the last read 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of this function. 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortDCDChange(int port); 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : no changed 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : DCD has changed 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 18: Check ths current DCD state is ON or not. 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortDCDON(int port); 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 : DCD off 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : DCD on 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 19: Flush the Rx/Tx buffer data of this port. 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortFlushData(int port, int mode); 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int mode 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0 : flush the Rx buffer 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 : flush the Tx buffer 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 : flush the Rx and Tx buffer 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 20: Write data. 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortWriteData(int port, unsigned char * buffer, int length); 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned char * buffer : pointer to write data buffer. 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int length : write data length 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real write data length 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 21: Read data. 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 195133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * int MoxaPortReadData(int port, struct tty_struct *tty); 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 195333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox * struct tty_struct *tty : tty for data 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - length : real read data length 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 24: Get the Tx buffer current queued data bytes 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxQueue(int port); 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current queued data bytes 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 25: Get the Tx buffer current free space 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortTxFree(int port); 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Tx buffer current free space 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 26: Get the Rx buffer current queued data bytes 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortRxQueue(int port); 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: .. : Rx buffer current queued data bytes 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 28: Disable port data transmission. 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxDisable(int port); 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 29: Enable port data transmission. 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortTxEnable(int port); 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 31: Get the received BREAK signal count and reset it. 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int MoxaPortResetBrkCnt(int port); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return: 0 - .. : BREAK signal count 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function 34: Send out a BREAK signal. 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Syntax: 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * void MoxaPortSendBreak(int port, int ms100); 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int port : port number (0 - 127) 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * int ms100 : break signal time interval. 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unit: 100 mini-second. if ms100 == 0, it will 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * send out a about 250 ms BREAK signal. 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2011b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortIsValid(int port) 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (moxaCard == 0) 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 20158f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slaby if (moxa_ports[port].chkPort == 0) 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (1); 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2020b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortEnable(struct moxa_port *port) 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds short lowwater = 512; 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2025b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(lowwater, ofsAddr + Low_water); 2027b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->breakCnt = 0; 2028b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->board->boardType == MOXA_BOARD_C320_ISA || 2029b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board->boardType == MOXA_BOARD_C320_PCI) { 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBreakIrq, 0); 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_FlushQueue, 2); 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_EnableCH, Magic_code); 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MoxaPortLineStatus(port); 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2042b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortDisable(struct moxa_port *port) 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2044b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(0, ofsAddr + HostStat); 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_DisableCH, Magic_code); 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2052b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic long MoxaPortGetMaxBaud(struct moxa_port *port) 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2054b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->board->boardType == MOXA_BOARD_C320_ISA || 2055b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board->boardType == MOXA_BOARD_C320_PCI) 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (460800L); 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (921600L); 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2062b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic long MoxaPortSetBaud(struct moxa_port *port, long baud) 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds long max, clock; 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int val; 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0)) 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 2070b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud > max) 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = max; 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max == 38400L) 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */ 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (max == 57600L) 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */ 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */ 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = clock / baud; 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetBaud, val); 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = clock / val; 2082b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->curBaud = baud; 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (baud); 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2086b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, 2087b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby speed_t baud) 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t cflag; 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tcflag_t mode = 0; 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2093b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->chkPort == 0 || termio == 0) 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-1); 2095b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = termio->c_cflag; /* termio->c_cflag */ 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = termio->c_cflag & CSIZE; 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == CS5) 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS5; 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS6) 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS6; 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS7) 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS7; 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (mode == CS8) 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = MX_CS8; 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & CSTOPB) { 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mode == MX_CS5) 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP15; 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP2; 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_STOP1; 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARENB) { 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_cflag & PARODD) 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARODD; 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PAREVEN; 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= MX_PARNONE; 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode); 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2126b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->board->boardType == MOXA_BOARD_C320_ISA || 2127b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board->boardType == MOXA_BOARD_C320_PCI) { 2128c7bce3097c0f9bbed76ee6fd03742f2624031a45Alan Cox if (baud >= 921600L) 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-1); 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2131db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox baud = MoxaPortSetBaud(port, baud); 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (termio->c_iflag & (IXON | IXOFF | IXANY)) { 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(FC_SetXonXoff, ofsAddr + FuncCode); 21376f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2140db1acaa632870ec87b65e062bc72ca375837a1f6Alan Cox return (baud); 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2143b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, 2144b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int *rtsState) 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2147b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (!MoxaPortIsValid(port->tty->index)) 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-1); 2149b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (dtrState) 2150b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *dtrState = !!(port->lineCtrl & DTR_ON); 2151b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (rtsState) 2152b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby *rtsState = !!(port->lineCtrl & RTS_ON); 2153b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2157b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2159b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dtr) 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= DTR_ON; 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_ON; 2165b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lineCtrl = mode; 2166b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_LineControl, mode); 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2169b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, 2170b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int txflow, int rxflow, int txany) 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2172b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int mode = 0; 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rts) 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= RTS_FlowCtl; 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cts) 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= CTS_FlowCtl; 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txflow) 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Tx_FlowCtl; 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rxflow) 21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= Rx_FlowCtl; 21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (txany) 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= IXM_IXANY; 2184b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetFlowCtl, mode); 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2187b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortLineStatus(struct moxa_port *port) 21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *ofsAddr; 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int val; 21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2192b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2193b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->board->boardType == MOXA_BOARD_C320_ISA || 2194b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->board->boardType == MOXA_BOARD_C320_PCI) { 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_LineStatus, 0); 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FuncArg); 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = readw(ofsAddr + FlagStat) >> 4; 21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 0x0B; 22011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (val & 8) { 22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= 4; 2203b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if ((port->DCDState & DCD_oldstate) == 0) 2204b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->DCDState = (DCD_oldstate | DCD_changed); 22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2206b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->DCDState & DCD_oldstate) 2207b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->DCDState = DCD_changed; 22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= 7; 22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (val); 22111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2213b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortDCDChange(struct moxa_port *port) 22141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int n; 22161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2217b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->chkPort == 0) 22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 2219b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby n = port->DCDState; 2220b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->DCDState &= ~DCD_changed; 22211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n &= DCD_changed; 22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (n); 22231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2225b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortDCDON(struct moxa_port *port) 22261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int n; 22281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2229b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->chkPort == 0) 22301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 2231b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby if (port->DCDState & DCD_oldstate) 22321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n = 1; 22331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 22341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n = 0; 22351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (n); 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2238b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortWriteData(struct moxa_port *port, unsigned char *buffer, 2239b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby int len) 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c, total, i; 22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort tail; 22431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cnt; 22441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort head, tx_mask, spage, epage; 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort pageno, pageofs, bufhead; 22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2248b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2249b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_mask = readw(ofsAddr + TX_mask); 22511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_txb); 22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_txb); 22531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + TXwptr); 22541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + TXrptr); 22551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = (head > tail) ? (head - tail - 1) 22561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : (head - tail + tx_mask); 22571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c > len) 22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = len; 2259b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxaLog.txcnt[port->tty->index] += c; 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = c; 22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_txb); 22631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (c > 0) { 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (head > tail) 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = head - tail - 1; 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tx_mask + 1 - tail; 22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (c > len) ? len : c; 22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + tail; 22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < len; i++) 22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(*buffer++, ofs + i); 22731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = (tail + len) & tx_mask; 22741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= len; 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(tail, ofsAddr + TXwptr); 22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 22781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = c; 22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (tail >> 13); 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = tail & Page_mask; 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnt = Page_size - pageofs; 22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cnt > c) 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnt = c; 22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c -= cnt; 22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(pageno, baseAddr + Control_reg); 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < cnt; i++) 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(*buffer++, ofs + i); 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c == 0) { 22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew((tail + len) & tx_mask, ofsAddr + TXwptr); 22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (1); 22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(1, ofsAddr + CD180TXirq); /* start to send */ 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (total); 23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2303b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortReadData(struct moxa_port *port, struct tty_struct *tty) 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds register ushort head, pageofs; 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, count, cnt, len, total, remain; 23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort tail, rx_mask, spage, epage; 23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort pageno, bufhead; 23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *baseAddr, *ofsAddr, *ofs; 23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2311b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby ofsAddr = port->tableAddr; 2312b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby baseAddr = port->board->basemem; 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = readw(ofsAddr + RXrptr); 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tail = readw(ofsAddr + RXwptr); 23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_mask = readw(ofsAddr + RX_mask); 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spage = readw(ofsAddr + Page_rxb); 23171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epage = readw(ofsAddr + EndPage_rxb); 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = (tail >= head) ? (tail - head) 23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : (tail - head + rx_mask + 1); 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) 232133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox return 0; 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 232333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox total = count; 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remain = count - total; 2325b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxaLog.rxcnt[port->tty->index] += total; 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = total; 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (spage == epage) { 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufhead = readw(ofsAddr + Ofs_rxb); 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(spage, baseAddr + Control_reg); 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (count > 0) { 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tail >= head) 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = tail - head; 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = rx_mask + 1 - head; 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (count > len) ? len : count; 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + bufhead + head; 23371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < len; i++) 233833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); 23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds head = (head + len) & rx_mask; 23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(head, ofsAddr + RXrptr); 23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = count; 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage + (head >> 13); 23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = head & Page_mask; 23471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 23481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnt = Page_size - pageofs; 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cnt > count) 23501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnt = count; 23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= cnt; 23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(pageno, baseAddr + Control_reg); 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ofs = baseAddr + DynPage_addr + pageofs; 23541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < cnt; i++) 235533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); 23561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) { 23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew((head + len) & rx_mask, ofsAddr + RXrptr); 23581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pageno == epage) 23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageno = spage; 23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pageofs = 0; 23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (1); 23641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) { 23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxaLowWaterChk = 1; 2367b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->lowChkFlag = 1; 23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (total); 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2373b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxQueue(struct moxa_port *port) 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2375b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort rptr, wptr, mask; 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 23801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (wptr - rptr) & mask; 23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (len); 23841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2386b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortTxFree(struct moxa_port *port) 23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2388b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 23891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort rptr, wptr, mask; 23901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + TXrptr); 23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + TXwptr); 23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + TX_mask); 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = mask - ((wptr - rptr) & mask); 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (len); 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2399b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortRxQueue(struct moxa_port *port) 24001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2401b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 24021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort rptr, wptr, mask; 24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 24041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 24061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 24071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 24081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (wptr - rptr) & mask; 24091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (len); 24101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2413b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxDisable(struct moxa_port *port) 24141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2415b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); 24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2418b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortTxEnable(struct moxa_port *port) 24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2420b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby moxafunc(port->tableAddr, FC_SetXonState, Magic_code); 24211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2424b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic int MoxaPortResetBrkCnt(struct moxa_port *port) 24251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort cnt; 2427b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby cnt = port->breakCnt; 2428b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby port->breakCnt = 0; 24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (cnt); 24301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2433b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaPortSendBreak(struct moxa_port *port, int ms100) 24341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2435b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 24361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ms100) { 24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SendBreak, Magic_code); 243924c032f1dd393c995545ecefa8c1585ae9ef6b37Jiri Slaby msleep(ms100 * 10); 24401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SendBreak, Magic_code); 244224c032f1dd393c995545ecefa8c1585ae9ef6b37Jiri Slaby msleep(250); 24431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_StopBreak, Magic_code); 24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24478f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_get_serial_info(struct moxa_port *info, 24481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct __user *retinfo) 24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct tmp; 24511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&tmp, 0, sizeof(tmp)); 24531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.type = info->type; 2454b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby tmp.line = info->tty->index; 24551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.port = 0; 24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.irq = 0; 24571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.flags = info->asyncflags; 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.baud_base = 921600; 24591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.close_delay = info->close_delay; 24601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.closing_wait = info->closing_wait; 24611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.custom_divisor = 0; 24621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.hub6 = 0; 24631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 24641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 24651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 24661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24698f8ecbad09b48e5fe44a8d7f5344e802e9c231c8Jiri Slabystatic int moxa_set_serial_info(struct moxa_port *info, 24701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct __user *new_info) 24711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_struct new_serial; 24731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(copy_from_user(&new_serial, new_info, sizeof(new_serial))) 24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 24761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((new_serial.irq != 0) || 24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (new_serial.port != 0) || 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// (new_serial.type != info->type) || 24801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (new_serial.custom_divisor != 0) || 24811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (new_serial.baud_base != 921600)) 24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EPERM); 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_SYS_ADMIN)) { 24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((new_serial.flags & ~ASYNC_USR_MASK) != 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->asyncflags & ~ASYNC_USR_MASK))) 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (-EPERM); 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = new_serial.close_delay * HZ / 100; 24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->closing_wait = new_serial.closing_wait * HZ / 100; 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); 24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_serial.type == PORT_16550A) { 2497b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaSetFifo(info, 1); 24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2499b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby MoxaSetFifo(info, 0); 25001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->type = new_serial.type; 25031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (0); 25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/***************************************************************************** 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Static local functions: * 25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) 25121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(arg, ofsAddr + FuncArg); 25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writew(cmd, ofsAddr + FuncCode); 25166f56b658b4e5c4486641ce62f331150954c4de37Jiri Slaby moxa_wait_finish(ofsAddr); 25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25196f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_wait_finish(void __iomem *ofsAddr) 25201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long i, j; 25221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = jiffies; 25241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (readw(ofsAddr + FuncCode) != 0) { 25251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds j = jiffies; 25261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((j - i) > moxaFuncTout) { 25271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 25281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25326f56b658b4e5c4486641ce62f331150954c4de37Jiri Slabystatic void moxa_low_water_check(void __iomem *ofsAddr) 25331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 25351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ushort rptr, wptr, mask; 25361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (readb(ofsAddr + FlagStat) & Xoff_state) { 25381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rptr = readw(ofsAddr + RXrptr); 25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wptr = readw(ofsAddr + RXwptr); 25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readw(ofsAddr + RX_mask); 25411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = (wptr - rptr) & mask; 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len <= Low_water) 25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SendXon, 0); 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2547b4173f45758a5b5185acb302c507289e661d9419Jiri Slabystatic void MoxaSetFifo(struct moxa_port *port, int enable) 25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2549b4173f45758a5b5185acb302c507289e661d9419Jiri Slaby void __iomem *ofsAddr = port->tableAddr; 25501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!enable) { 25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); 25531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); 25541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 25551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); 25561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); 25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2559