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@@ -1,2729 +0,0 @@
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-/*
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- * mxser.c -- MOXA Smartio/Industio family multiport serial driver.
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- *
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- * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com.tw).
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- * Copyright (C) 2006-2007 Jiri Slaby <jirislaby@gmail.com>
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- *
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- * This code is loosely based on the 1.8 moxa driver which is based on
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- * Linux serial driver, written by Linus Torvalds, Theodore T'so and
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- * others.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
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- * <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
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- * - Fixed x86_64 cleanness
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- * - Fixed sleep with spinlock held in mxser_send_break
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- */
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-
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-#include <linux/module.h>
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-#include <linux/errno.h>
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-#include <linux/signal.h>
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-#include <linux/sched.h>
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-#include <linux/timer.h>
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-#include <linux/interrupt.h>
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-#include <linux/tty.h>
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-#include <linux/tty_flip.h>
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-#include <linux/serial.h>
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-#include <linux/serial_reg.h>
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-#include <linux/major.h>
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-#include <linux/string.h>
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-#include <linux/fcntl.h>
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-#include <linux/ptrace.h>
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-#include <linux/gfp.h>
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-#include <linux/ioport.h>
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-#include <linux/mm.h>
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-#include <linux/delay.h>
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-#include <linux/pci.h>
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-#include <linux/bitops.h>
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-
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-#include <asm/system.h>
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-#include <asm/io.h>
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-#include <asm/irq.h>
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-#include <asm/uaccess.h>
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-
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-#include "mxser_new.h"
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-
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-#define MXSER_VERSION "2.0.2" /* 1.10 */
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-#define MXSERMAJOR 174
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-#define MXSERCUMAJOR 175
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-
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-#define MXSER_BOARDS 4 /* Max. boards */
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-#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
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-#define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD)
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-#define MXSER_ISR_PASS_LIMIT 100
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-
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-#define MXSER_ERR_IOADDR -1
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-#define MXSER_ERR_IRQ -2
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-#define MXSER_ERR_IRQ_CONFLIT -3
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-#define MXSER_ERR_VECTOR -4
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-
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-/*CheckIsMoxaMust return value*/
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-#define MOXA_OTHER_UART 0x00
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-#define MOXA_MUST_MU150_HWID 0x01
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-#define MOXA_MUST_MU860_HWID 0x02
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-
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-#define WAKEUP_CHARS 256
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-
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-#define UART_MCR_AFE 0x20
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-#define UART_LSR_SPECIAL 0x1E
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-
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-#define PCI_DEVICE_ID_CB108 0x1080
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-#define PCI_DEVICE_ID_CB114 0x1142
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-#define PCI_DEVICE_ID_CB134I 0x1341
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-#define PCI_DEVICE_ID_CP138U 0x1380
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-#define PCI_DEVICE_ID_POS104UL 0x1044
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-
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-
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-#define C168_ASIC_ID 1
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-#define C104_ASIC_ID 2
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-#define C102_ASIC_ID 0xB
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-#define CI132_ASIC_ID 4
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-#define CI134_ASIC_ID 3
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-#define CI104J_ASIC_ID 5
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-
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-#define MXSER_HIGHBAUD 1
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-#define MXSER_HAS2 2
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-
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-/* This is only for PCI */
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-static const struct {
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- int type;
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- int tx_fifo;
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- int rx_fifo;
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- int xmit_fifo_size;
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- int rx_high_water;
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- int rx_trigger;
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- int rx_low_water;
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- long max_baud;
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-} Gpci_uart_info[] = {
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- {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L},
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- {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L},
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- {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
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-};
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-#define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info)
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-
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-struct mxser_cardinfo {
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- char *name;
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- unsigned int nports;
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- unsigned int flags;
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-};
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-
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-static const struct mxser_cardinfo mxser_cards[] = {
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-/* 0*/ { "C168 series", 8, },
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- { "C104 series", 4, },
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- { "CI-104J series", 4, },
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- { "C168H/PCI series", 8, },
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- { "C104H/PCI series", 4, },
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-/* 5*/ { "C102 series", 4, MXSER_HAS2 }, /* C102-ISA */
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- { "CI-132 series", 4, MXSER_HAS2 },
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- { "CI-134 series", 4, },
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- { "CP-132 series", 2, },
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- { "CP-114 series", 4, },
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-/*10*/ { "CT-114 series", 4, },
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- { "CP-102 series", 2, MXSER_HIGHBAUD },
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- { "CP-104U series", 4, },
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- { "CP-168U series", 8, },
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- { "CP-132U series", 2, },
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-/*15*/ { "CP-134U series", 4, },
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- { "CP-104JU series", 4, },
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- { "Moxa UC7000 Serial", 8, }, /* RC7000 */
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- { "CP-118U series", 8, },
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- { "CP-102UL series", 2, },
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-/*20*/ { "CP-102U series", 2, },
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- { "CP-118EL series", 8, },
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- { "CP-168EL series", 8, },
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- { "CP-104EL series", 4, },
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- { "CB-108 series", 8, },
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-/*25*/ { "CB-114 series", 4, },
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- { "CB-134I series", 4, },
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- { "CP-138U series", 8, },
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- { "POS-104UL series", 4, }
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-};
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-
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-/* driver_data correspond to the lines in the structure above
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- see also ISA probe function before you change something */
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-static struct pci_device_id mxser_pcibrds[] = {
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168), .driver_data = 3 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104), .driver_data = 4 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132), .driver_data = 8 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114), .driver_data = 9 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114), .driver_data = 10 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102), .driver_data = 11 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U), .driver_data = 12 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U), .driver_data = 13 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U), .driver_data = 14 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U), .driver_data = 15 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000), .driver_data = 17 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U), .driver_data = 18 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U), .driver_data = 20 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108), .driver_data = 24 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114), .driver_data = 25 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I), .driver_data = 26 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U), .driver_data = 27 },
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- { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 },
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- { }
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-};
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-MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
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-
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-static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
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-static int ttymajor = MXSERMAJOR;
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-
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-/* Variables for insmod */
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-
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-MODULE_AUTHOR("Casper Yang");
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-MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
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-module_param_array(ioaddr, int, NULL, 0);
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-module_param(ttymajor, int, 0);
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-MODULE_LICENSE("GPL");
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-
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-struct mxser_log {
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- int tick;
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- unsigned long rxcnt[MXSER_PORTS];
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- unsigned long txcnt[MXSER_PORTS];
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-};
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-
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-
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-struct mxser_mon {
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- unsigned long rxcnt;
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- unsigned long txcnt;
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- unsigned long up_rxcnt;
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- unsigned long up_txcnt;
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- int modem_status;
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- unsigned char hold_reason;
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-};
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-
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-struct mxser_mon_ext {
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- unsigned long rx_cnt[32];
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- unsigned long tx_cnt[32];
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- unsigned long up_rxcnt[32];
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- unsigned long up_txcnt[32];
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- int modem_status[32];
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-
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- long baudrate[32];
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- int databits[32];
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- int stopbits[32];
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- int parity[32];
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- int flowctrl[32];
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- int fifo[32];
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- int iftype[32];
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-};
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-
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-struct mxser_board;
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-
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-struct mxser_port {
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- struct mxser_board *board;
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- struct tty_struct *tty;
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-
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- unsigned long ioaddr;
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- unsigned long opmode_ioaddr;
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- int max_baud;
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-
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- int rx_high_water;
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- int rx_trigger; /* Rx fifo trigger level */
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- int rx_low_water;
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- int baud_base; /* max. speed */
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- int type; /* UART type */
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- int flags; /* defined in tty.h */
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-
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- int x_char; /* xon/xoff character */
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- int IER; /* Interrupt Enable Register */
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- int MCR; /* Modem control register */
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-
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- unsigned char stop_rx;
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- unsigned char ldisc_stop_rx;
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-
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- int custom_divisor;
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- int close_delay;
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- unsigned short closing_wait;
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- unsigned char err_shadow;
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- unsigned long event;
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-
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- int count; /* # of fd on device */
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- int blocked_open; /* # of blocked opens */
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- struct async_icount icount; /* kernel counters for 4 input interrupts */
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- int timeout;
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-
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- int read_status_mask;
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- int ignore_status_mask;
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- int xmit_fifo_size;
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- unsigned char *xmit_buf;
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- int xmit_head;
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- int xmit_tail;
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- int xmit_cnt;
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-
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- struct ktermios normal_termios;
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-
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- struct mxser_mon mon_data;
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-
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- spinlock_t slock;
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- wait_queue_head_t open_wait;
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- wait_queue_head_t delta_msr_wait;
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-};
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-
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-struct mxser_board {
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- unsigned int idx;
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- int irq;
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- const struct mxser_cardinfo *info;
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- unsigned long vector;
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- unsigned long vector_mask;
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-
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- int chip_flag;
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- int uart_type;
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-
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- struct mxser_port ports[MXSER_PORTS_PER_BOARD];
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-};
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-
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-struct mxser_mstatus {
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- tcflag_t cflag;
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- int cts;
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- int dsr;
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- int ri;
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- int dcd;
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-};
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-
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-static struct mxser_mstatus GMStatus[MXSER_PORTS];
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-
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-static int mxserBoardCAP[MXSER_BOARDS] = {
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- 0, 0, 0, 0
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- /* 0x180, 0x280, 0x200, 0x320 */
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-};
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-
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-static struct mxser_board mxser_boards[MXSER_BOARDS];
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-static struct tty_driver *mxvar_sdriver;
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-static struct mxser_log mxvar_log;
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-static int mxvar_diagflag;
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-static unsigned char mxser_msr[MXSER_PORTS + 1];
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-static struct mxser_mon_ext mon_data_ext;
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-static int mxser_set_baud_method[MXSER_PORTS + 1];
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-
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-#ifdef CONFIG_PCI
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-static int __devinit CheckIsMoxaMust(unsigned long io)
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-{
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- u8 oldmcr, hwid;
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- int i;
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-
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- outb(0, io + UART_LCR);
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- DISABLE_MOXA_MUST_ENCHANCE_MODE(io);
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- oldmcr = inb(io + UART_MCR);
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- outb(0, io + UART_MCR);
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- SET_MOXA_MUST_XON1_VALUE(io, 0x11);
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- if ((hwid = inb(io + UART_MCR)) != 0) {
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- outb(oldmcr, io + UART_MCR);
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- return MOXA_OTHER_UART;
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- }
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-
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- GET_MOXA_MUST_HARDWARE_ID(io, &hwid);
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- for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */
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- if (hwid == Gpci_uart_info[i].type)
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- return (int)hwid;
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- }
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- return MOXA_OTHER_UART;
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-}
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-#endif
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-
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-static void process_txrx_fifo(struct mxser_port *info)
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-{
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- int i;
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-
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- if ((info->type == PORT_16450) || (info->type == PORT_8250)) {
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- info->rx_trigger = 1;
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- info->rx_high_water = 1;
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- info->rx_low_water = 1;
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- info->xmit_fifo_size = 1;
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- } else
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- for (i = 0; i < UART_INFO_NUM; i++)
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- if (info->board->chip_flag == Gpci_uart_info[i].type) {
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- info->rx_trigger = Gpci_uart_info[i].rx_trigger;
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- info->rx_low_water = Gpci_uart_info[i].rx_low_water;
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- info->rx_high_water = Gpci_uart_info[i].rx_high_water;
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- info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size;
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- break;
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- }
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-}
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-
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-static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
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-{
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- unsigned char status = 0;
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-
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- status = inb(baseaddr + UART_MSR);
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-
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- mxser_msr[port] &= 0x0F;
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- mxser_msr[port] |= status;
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- status = mxser_msr[port];
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- if (mode)
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- mxser_msr[port] = 0;
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-
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- return status;
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-}
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-
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-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
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- struct mxser_port *port)
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-{
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- DECLARE_WAITQUEUE(wait, current);
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- int retval;
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- int do_clocal = 0;
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- unsigned long flags;
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-
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- /*
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|
- * If non-blocking mode is set, or the port is not enabled,
|
|
|
- * then make the check up front and then exit.
|
|
|
- */
|
|
|
- if ((filp->f_flags & O_NONBLOCK) ||
|
|
|
- test_bit(TTY_IO_ERROR, &tty->flags)) {
|
|
|
- port->flags |= ASYNC_NORMAL_ACTIVE;
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (tty->termios->c_cflag & CLOCAL)
|
|
|
- do_clocal = 1;
|
|
|
-
|
|
|
- /*
|
|
|
- * Block waiting for the carrier detect and the line to become
|
|
|
- * free (i.e., not in use by the callout). While we are in
|
|
|
- * this loop, port->count is dropped by one, so that
|
|
|
- * mxser_close() knows when to free things. We restore it upon
|
|
|
- * exit, either normal or abnormal.
|
|
|
- */
|
|
|
- retval = 0;
|
|
|
- add_wait_queue(&port->open_wait, &wait);
|
|
|
-
|
|
|
- spin_lock_irqsave(&port->slock, flags);
|
|
|
- if (!tty_hung_up_p(filp))
|
|
|
- port->count--;
|
|
|
- spin_unlock_irqrestore(&port->slock, flags);
|
|
|
- port->blocked_open++;
|
|
|
- while (1) {
|
|
|
- spin_lock_irqsave(&port->slock, flags);
|
|
|
- outb(inb(port->ioaddr + UART_MCR) |
|
|
|
- UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
|
|
|
- spin_unlock_irqrestore(&port->slock, flags);
|
|
|
- set_current_state(TASK_INTERRUPTIBLE);
|
|
|
- if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
|
|
|
- if (port->flags & ASYNC_HUP_NOTIFY)
|
|
|
- retval = -EAGAIN;
|
|
|
- else
|
|
|
- retval = -ERESTARTSYS;
|
|
|
- break;
|
|
|
- }
|
|
|
- if (!(port->flags & ASYNC_CLOSING) &&
|
|
|
- (do_clocal ||
|
|
|
- (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
|
|
|
- break;
|
|
|
- if (signal_pending(current)) {
|
|
|
- retval = -ERESTARTSYS;
|
|
|
- break;
|
|
|
- }
|
|
|
- schedule();
|
|
|
- }
|
|
|
- set_current_state(TASK_RUNNING);
|
|
|
- remove_wait_queue(&port->open_wait, &wait);
|
|
|
- if (!tty_hung_up_p(filp))
|
|
|
- port->count++;
|
|
|
- port->blocked_open--;
|
|
|
- if (retval)
|
|
|
- return retval;
|
|
|
- port->flags |= ASYNC_NORMAL_ACTIVE;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_set_baud(struct mxser_port *info, long newspd)
|
|
|
-{
|
|
|
- int quot = 0, baud;
|
|
|
- unsigned char cval;
|
|
|
-
|
|
|
- if (!info->tty || !info->tty->termios)
|
|
|
- return -1;
|
|
|
-
|
|
|
- if (!(info->ioaddr))
|
|
|
- return -1;
|
|
|
-
|
|
|
- if (newspd > info->max_baud)
|
|
|
- return -1;
|
|
|
-
|
|
|
- if (newspd == 134) {
|
|
|
- quot = 2 * info->baud_base / 269;
|
|
|
- tty_encode_baud_rate(info->tty, 134, 134);
|
|
|
- } else if (newspd) {
|
|
|
- quot = info->baud_base / newspd;
|
|
|
- if (quot == 0)
|
|
|
- quot = 1;
|
|
|
- baud = info->baud_base/quot;
|
|
|
- tty_encode_baud_rate(info->tty, baud, baud);
|
|
|
- } else {
|
|
|
- quot = 0;
|
|
|
- }
|
|
|
-
|
|
|
- info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
|
|
|
- info->timeout += HZ / 50; /* Add .02 seconds of slop */
|
|
|
-
|
|
|
- if (quot) {
|
|
|
- info->MCR |= UART_MCR_DTR;
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- } else {
|
|
|
- info->MCR &= ~UART_MCR_DTR;
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- cval = inb(info->ioaddr + UART_LCR);
|
|
|
-
|
|
|
- outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */
|
|
|
-
|
|
|
- outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */
|
|
|
- outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */
|
|
|
- outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */
|
|
|
-
|
|
|
-#ifdef BOTHER
|
|
|
- if (C_BAUD(info->tty) == BOTHER) {
|
|
|
- quot = info->baud_base % newspd;
|
|
|
- quot *= 8;
|
|
|
- if (quot % newspd > newspd / 2) {
|
|
|
- quot /= newspd;
|
|
|
- quot++;
|
|
|
- } else
|
|
|
- quot /= newspd;
|
|
|
-
|
|
|
- SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
|
|
|
- } else
|
|
|
-#endif
|
|
|
- SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine is called to set the UART divisor registers to match
|
|
|
- * the specified baud rate for a serial port.
|
|
|
- */
|
|
|
-static int mxser_change_speed(struct mxser_port *info,
|
|
|
- struct ktermios *old_termios)
|
|
|
-{
|
|
|
- unsigned cflag, cval, fcr;
|
|
|
- int ret = 0;
|
|
|
- unsigned char status;
|
|
|
-
|
|
|
- if (!info->tty || !info->tty->termios)
|
|
|
- return ret;
|
|
|
- cflag = info->tty->termios->c_cflag;
|
|
|
- if (!(info->ioaddr))
|
|
|
- return ret;
|
|
|
-
|
|
|
- if (mxser_set_baud_method[info->tty->index] == 0)
|
|
|
- mxser_set_baud(info, tty_get_baud_rate(info->tty));
|
|
|
-
|
|
|
- /* byte size and parity */
|
|
|
- switch (cflag & CSIZE) {
|
|
|
- case CS5:
|
|
|
- cval = 0x00;
|
|
|
- break;
|
|
|
- case CS6:
|
|
|
- cval = 0x01;
|
|
|
- break;
|
|
|
- case CS7:
|
|
|
- cval = 0x02;
|
|
|
- break;
|
|
|
- case CS8:
|
|
|
- cval = 0x03;
|
|
|
- break;
|
|
|
- default:
|
|
|
- cval = 0x00;
|
|
|
- break; /* too keep GCC shut... */
|
|
|
- }
|
|
|
- if (cflag & CSTOPB)
|
|
|
- cval |= 0x04;
|
|
|
- if (cflag & PARENB)
|
|
|
- cval |= UART_LCR_PARITY;
|
|
|
- if (!(cflag & PARODD))
|
|
|
- cval |= UART_LCR_EPAR;
|
|
|
- if (cflag & CMSPAR)
|
|
|
- cval |= UART_LCR_SPAR;
|
|
|
-
|
|
|
- if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
|
|
|
- if (info->board->chip_flag) {
|
|
|
- fcr = UART_FCR_ENABLE_FIFO;
|
|
|
- fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
|
|
|
- SET_MOXA_MUST_FIFO_VALUE(info);
|
|
|
- } else
|
|
|
- fcr = 0;
|
|
|
- } else {
|
|
|
- fcr = UART_FCR_ENABLE_FIFO;
|
|
|
- if (info->board->chip_flag) {
|
|
|
- fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
|
|
|
- SET_MOXA_MUST_FIFO_VALUE(info);
|
|
|
- } else {
|
|
|
- switch (info->rx_trigger) {
|
|
|
- case 1:
|
|
|
- fcr |= UART_FCR_TRIGGER_1;
|
|
|
- break;
|
|
|
- case 4:
|
|
|
- fcr |= UART_FCR_TRIGGER_4;
|
|
|
- break;
|
|
|
- case 8:
|
|
|
- fcr |= UART_FCR_TRIGGER_8;
|
|
|
- break;
|
|
|
- default:
|
|
|
- fcr |= UART_FCR_TRIGGER_14;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* CTS flow control flag and modem status interrupts */
|
|
|
- info->IER &= ~UART_IER_MSI;
|
|
|
- info->MCR &= ~UART_MCR_AFE;
|
|
|
- if (cflag & CRTSCTS) {
|
|
|
- info->flags |= ASYNC_CTS_FLOW;
|
|
|
- info->IER |= UART_IER_MSI;
|
|
|
- if ((info->type == PORT_16550A) || (info->board->chip_flag)) {
|
|
|
- info->MCR |= UART_MCR_AFE;
|
|
|
- } else {
|
|
|
- status = inb(info->ioaddr + UART_MSR);
|
|
|
- if (info->tty->hw_stopped) {
|
|
|
- if (status & UART_MSR_CTS) {
|
|
|
- info->tty->hw_stopped = 0;
|
|
|
- if (info->type != PORT_16550A &&
|
|
|
- !info->board->chip_flag) {
|
|
|
- outb(info->IER & ~UART_IER_THRI,
|
|
|
- info->ioaddr +
|
|
|
- UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr +
|
|
|
- UART_IER);
|
|
|
- }
|
|
|
- tty_wakeup(info->tty);
|
|
|
- }
|
|
|
- } else {
|
|
|
- if (!(status & UART_MSR_CTS)) {
|
|
|
- info->tty->hw_stopped = 1;
|
|
|
- if ((info->type != PORT_16550A) &&
|
|
|
- (!info->board->chip_flag)) {
|
|
|
- info->IER &= ~UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr +
|
|
|
- UART_IER);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- } else {
|
|
|
- info->flags &= ~ASYNC_CTS_FLOW;
|
|
|
- }
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- if (cflag & CLOCAL) {
|
|
|
- info->flags &= ~ASYNC_CHECK_CD;
|
|
|
- } else {
|
|
|
- info->flags |= ASYNC_CHECK_CD;
|
|
|
- info->IER |= UART_IER_MSI;
|
|
|
- }
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
-
|
|
|
- /*
|
|
|
- * Set up parity check flag
|
|
|
- */
|
|
|
- info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
|
|
|
- if (I_INPCK(info->tty))
|
|
|
- info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
|
|
|
- if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
|
|
|
- info->read_status_mask |= UART_LSR_BI;
|
|
|
-
|
|
|
- info->ignore_status_mask = 0;
|
|
|
-
|
|
|
- if (I_IGNBRK(info->tty)) {
|
|
|
- info->ignore_status_mask |= UART_LSR_BI;
|
|
|
- info->read_status_mask |= UART_LSR_BI;
|
|
|
- /*
|
|
|
- * If we're ignore parity and break indicators, ignore
|
|
|
- * overruns too. (For real raw support).
|
|
|
- */
|
|
|
- if (I_IGNPAR(info->tty)) {
|
|
|
- info->ignore_status_mask |=
|
|
|
- UART_LSR_OE |
|
|
|
- UART_LSR_PE |
|
|
|
- UART_LSR_FE;
|
|
|
- info->read_status_mask |=
|
|
|
- UART_LSR_OE |
|
|
|
- UART_LSR_PE |
|
|
|
- UART_LSR_FE;
|
|
|
- }
|
|
|
- }
|
|
|
- if (info->board->chip_flag) {
|
|
|
- SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
|
|
|
- SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
|
|
|
- if (I_IXON(info->tty)) {
|
|
|
- ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
- } else {
|
|
|
- DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
- }
|
|
|
- if (I_IXOFF(info->tty)) {
|
|
|
- ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
- } else {
|
|
|
- DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- outb(fcr, info->ioaddr + UART_FCR); /* set fcr */
|
|
|
- outb(cval, info->ioaddr + UART_LCR);
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_check_modem_status(struct mxser_port *port, int status)
|
|
|
-{
|
|
|
- /* update input line counters */
|
|
|
- if (status & UART_MSR_TERI)
|
|
|
- port->icount.rng++;
|
|
|
- if (status & UART_MSR_DDSR)
|
|
|
- port->icount.dsr++;
|
|
|
- if (status & UART_MSR_DDCD)
|
|
|
- port->icount.dcd++;
|
|
|
- if (status & UART_MSR_DCTS)
|
|
|
- port->icount.cts++;
|
|
|
- port->mon_data.modem_status = status;
|
|
|
- wake_up_interruptible(&port->delta_msr_wait);
|
|
|
-
|
|
|
- if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
|
|
|
- if (status & UART_MSR_DCD)
|
|
|
- wake_up_interruptible(&port->open_wait);
|
|
|
- }
|
|
|
-
|
|
|
- if (port->flags & ASYNC_CTS_FLOW) {
|
|
|
- if (port->tty->hw_stopped) {
|
|
|
- if (status & UART_MSR_CTS) {
|
|
|
- port->tty->hw_stopped = 0;
|
|
|
-
|
|
|
- if ((port->type != PORT_16550A) &&
|
|
|
- (!port->board->chip_flag)) {
|
|
|
- outb(port->IER & ~UART_IER_THRI,
|
|
|
- port->ioaddr + UART_IER);
|
|
|
- port->IER |= UART_IER_THRI;
|
|
|
- outb(port->IER, port->ioaddr +
|
|
|
- UART_IER);
|
|
|
- }
|
|
|
- tty_wakeup(port->tty);
|
|
|
- }
|
|
|
- } else {
|
|
|
- if (!(status & UART_MSR_CTS)) {
|
|
|
- port->tty->hw_stopped = 1;
|
|
|
- if (port->type != PORT_16550A &&
|
|
|
- !port->board->chip_flag) {
|
|
|
- port->IER &= ~UART_IER_THRI;
|
|
|
- outb(port->IER, port->ioaddr +
|
|
|
- UART_IER);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_startup(struct mxser_port *info)
|
|
|
-{
|
|
|
- unsigned long page;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- page = __get_free_page(GFP_KERNEL);
|
|
|
- if (!page)
|
|
|
- return -ENOMEM;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
-
|
|
|
- if (info->flags & ASYNC_INITIALIZED) {
|
|
|
- free_page(page);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (!info->ioaddr || !info->type) {
|
|
|
- if (info->tty)
|
|
|
- set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
- free_page(page);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- if (info->xmit_buf)
|
|
|
- free_page(page);
|
|
|
- else
|
|
|
- info->xmit_buf = (unsigned char *) page;
|
|
|
-
|
|
|
- /*
|
|
|
- * Clear the FIFO buffers and disable them
|
|
|
- * (they will be reenabled in mxser_change_speed())
|
|
|
- */
|
|
|
- if (info->board->chip_flag)
|
|
|
- outb((UART_FCR_CLEAR_RCVR |
|
|
|
- UART_FCR_CLEAR_XMIT |
|
|
|
- MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
|
|
|
- else
|
|
|
- outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
|
|
|
- info->ioaddr + UART_FCR);
|
|
|
-
|
|
|
- /*
|
|
|
- * At this point there's no way the LSR could still be 0xFF;
|
|
|
- * if it is, then bail out, because there's likely no UART
|
|
|
- * here.
|
|
|
- */
|
|
|
- if (inb(info->ioaddr + UART_LSR) == 0xff) {
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- if (capable(CAP_SYS_ADMIN)) {
|
|
|
- if (info->tty)
|
|
|
- set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
- return 0;
|
|
|
- } else
|
|
|
- return -ENODEV;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * Clear the interrupt registers.
|
|
|
- */
|
|
|
- (void) inb(info->ioaddr + UART_LSR);
|
|
|
- (void) inb(info->ioaddr + UART_RX);
|
|
|
- (void) inb(info->ioaddr + UART_IIR);
|
|
|
- (void) inb(info->ioaddr + UART_MSR);
|
|
|
-
|
|
|
- /*
|
|
|
- * Now, initialize the UART
|
|
|
- */
|
|
|
- outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */
|
|
|
- info->MCR = UART_MCR_DTR | UART_MCR_RTS;
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
-
|
|
|
- /*
|
|
|
- * Finally, enable interrupts
|
|
|
- */
|
|
|
- info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
|
|
|
-
|
|
|
- if (info->board->chip_flag)
|
|
|
- info->IER |= MOXA_MUST_IER_EGDAI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */
|
|
|
-
|
|
|
- /*
|
|
|
- * And clear the interrupt registers again for luck.
|
|
|
- */
|
|
|
- (void) inb(info->ioaddr + UART_LSR);
|
|
|
- (void) inb(info->ioaddr + UART_RX);
|
|
|
- (void) inb(info->ioaddr + UART_IIR);
|
|
|
- (void) inb(info->ioaddr + UART_MSR);
|
|
|
-
|
|
|
- if (info->tty)
|
|
|
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * and set the speed of the serial port
|
|
|
- */
|
|
|
- mxser_change_speed(info, NULL);
|
|
|
- info->flags |= ASYNC_INITIALIZED;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine will shutdown a serial port; interrupts maybe disabled, and
|
|
|
- * DTR is dropped if the hangup on close termio flag is on.
|
|
|
- */
|
|
|
-static void mxser_shutdown(struct mxser_port *info)
|
|
|
-{
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (!(info->flags & ASYNC_INITIALIZED))
|
|
|
- return;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
-
|
|
|
- /*
|
|
|
- * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
|
|
|
- * here so the queue might never be waken up
|
|
|
- */
|
|
|
- wake_up_interruptible(&info->delta_msr_wait);
|
|
|
-
|
|
|
- /*
|
|
|
- * Free the IRQ, if necessary
|
|
|
- */
|
|
|
- if (info->xmit_buf) {
|
|
|
- free_page((unsigned long) info->xmit_buf);
|
|
|
- info->xmit_buf = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- info->IER = 0;
|
|
|
- outb(0x00, info->ioaddr + UART_IER);
|
|
|
-
|
|
|
- if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
|
|
|
- info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
-
|
|
|
- /* clear Rx/Tx FIFO's */
|
|
|
- if (info->board->chip_flag)
|
|
|
- outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
|
|
|
- MOXA_MUST_FCR_GDA_MODE_ENABLE,
|
|
|
- info->ioaddr + UART_FCR);
|
|
|
- else
|
|
|
- outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
|
|
|
- info->ioaddr + UART_FCR);
|
|
|
-
|
|
|
- /* read data port to reset things */
|
|
|
- (void) inb(info->ioaddr + UART_RX);
|
|
|
-
|
|
|
- if (info->tty)
|
|
|
- set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
-
|
|
|
- info->flags &= ~ASYNC_INITIALIZED;
|
|
|
-
|
|
|
- if (info->board->chip_flag)
|
|
|
- SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine is called whenever a serial port is opened. It
|
|
|
- * enables interrupts for a serial port, linking in its async structure into
|
|
|
- * the IRQ chain. It also performs the serial-specific
|
|
|
- * initialization for the tty structure.
|
|
|
- */
|
|
|
-static int mxser_open(struct tty_struct *tty, struct file *filp)
|
|
|
-{
|
|
|
- struct mxser_port *info;
|
|
|
- unsigned long flags;
|
|
|
- int retval, line;
|
|
|
-
|
|
|
- line = tty->index;
|
|
|
- if (line == MXSER_PORTS)
|
|
|
- return 0;
|
|
|
- if (line < 0 || line > MXSER_PORTS)
|
|
|
- return -ENODEV;
|
|
|
- info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD];
|
|
|
- if (!info->ioaddr)
|
|
|
- return -ENODEV;
|
|
|
-
|
|
|
- tty->driver_data = info;
|
|
|
- info->tty = tty;
|
|
|
- /*
|
|
|
- * Start up serial port
|
|
|
- */
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- info->count++;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- retval = mxser_startup(info);
|
|
|
- if (retval)
|
|
|
- return retval;
|
|
|
-
|
|
|
- retval = mxser_block_til_ready(tty, filp, info);
|
|
|
- if (retval)
|
|
|
- return retval;
|
|
|
-
|
|
|
- /* unmark here for very high baud rate (ex. 921600 bps) used */
|
|
|
- tty->low_latency = 1;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine is called when the serial port gets closed. First, we
|
|
|
- * wait for the last remaining data to be sent. Then, we unlink its
|
|
|
- * async structure from the interrupt chain if necessary, and we free
|
|
|
- * that IRQ if nothing is left in the chain.
|
|
|
- */
|
|
|
-static void mxser_close(struct tty_struct *tty, struct file *filp)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
-
|
|
|
- unsigned long timeout;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (tty->index == MXSER_PORTS)
|
|
|
- return;
|
|
|
- if (!info)
|
|
|
- return;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
-
|
|
|
- if (tty_hung_up_p(filp)) {
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return;
|
|
|
- }
|
|
|
- if ((tty->count == 1) && (info->count != 1)) {
|
|
|
- /*
|
|
|
- * Uh, oh. tty->count is 1, which means that the tty
|
|
|
- * structure will be freed. Info->count should always
|
|
|
- * be one in these conditions. If it's greater than
|
|
|
- * one, we've got real problems, since it means the
|
|
|
- * serial port won't be shutdown.
|
|
|
- */
|
|
|
- printk(KERN_ERR "mxser_close: bad serial port count; "
|
|
|
- "tty->count is 1, info->count is %d\n", info->count);
|
|
|
- info->count = 1;
|
|
|
- }
|
|
|
- if (--info->count < 0) {
|
|
|
- printk(KERN_ERR "mxser_close: bad serial port count for "
|
|
|
- "ttys%d: %d\n", tty->index, info->count);
|
|
|
- info->count = 0;
|
|
|
- }
|
|
|
- if (info->count) {
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return;
|
|
|
- }
|
|
|
- info->flags |= ASYNC_CLOSING;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- /*
|
|
|
- * Save the termios structure, since this port may have
|
|
|
- * separate termios for callout and dialin.
|
|
|
- */
|
|
|
- if (info->flags & ASYNC_NORMAL_ACTIVE)
|
|
|
- info->normal_termios = *tty->termios;
|
|
|
- /*
|
|
|
- * Now we wait for the transmit buffer to clear; and we notify
|
|
|
- * the line discipline to only process XON/XOFF characters.
|
|
|
- */
|
|
|
- tty->closing = 1;
|
|
|
- if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
|
|
- tty_wait_until_sent(tty, info->closing_wait);
|
|
|
- /*
|
|
|
- * At this point we stop accepting input. To do this, we
|
|
|
- * disable the receive line status interrupts, and tell the
|
|
|
- * interrupt driver to stop checking the data ready bit in the
|
|
|
- * line status register.
|
|
|
- */
|
|
|
- info->IER &= ~UART_IER_RLSI;
|
|
|
- if (info->board->chip_flag)
|
|
|
- info->IER &= ~MOXA_MUST_RECV_ISR;
|
|
|
-
|
|
|
- if (info->flags & ASYNC_INITIALIZED) {
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- /*
|
|
|
- * Before we drop DTR, make sure the UART transmitter
|
|
|
- * has completely drained; this is especially
|
|
|
- * important if there is a transmit FIFO!
|
|
|
- */
|
|
|
- timeout = jiffies + HZ;
|
|
|
- while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) {
|
|
|
- schedule_timeout_interruptible(5);
|
|
|
- if (time_after(jiffies, timeout))
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- mxser_shutdown(info);
|
|
|
-
|
|
|
- if (tty->driver->flush_buffer)
|
|
|
- tty->driver->flush_buffer(tty);
|
|
|
-
|
|
|
- tty_ldisc_flush(tty);
|
|
|
-
|
|
|
- tty->closing = 0;
|
|
|
- info->event = 0;
|
|
|
- info->tty = NULL;
|
|
|
- if (info->blocked_open) {
|
|
|
- if (info->close_delay)
|
|
|
- schedule_timeout_interruptible(info->close_delay);
|
|
|
- wake_up_interruptible(&info->open_wait);
|
|
|
- }
|
|
|
-
|
|
|
- info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
|
|
|
-{
|
|
|
- int c, total = 0;
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (!info->xmit_buf)
|
|
|
- return 0;
|
|
|
-
|
|
|
- while (1) {
|
|
|
- c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
|
|
|
- SERIAL_XMIT_SIZE - info->xmit_head));
|
|
|
- if (c <= 0)
|
|
|
- break;
|
|
|
-
|
|
|
- memcpy(info->xmit_buf + info->xmit_head, buf, c);
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- info->xmit_head = (info->xmit_head + c) &
|
|
|
- (SERIAL_XMIT_SIZE - 1);
|
|
|
- info->xmit_cnt += c;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- buf += c;
|
|
|
- count -= c;
|
|
|
- total += c;
|
|
|
- }
|
|
|
-
|
|
|
- if (info->xmit_cnt && !tty->stopped) {
|
|
|
- if (!tty->hw_stopped ||
|
|
|
- (info->type == PORT_16550A) ||
|
|
|
- (info->board->chip_flag)) {
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- outb(info->IER & ~UART_IER_THRI, info->ioaddr +
|
|
|
- UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- }
|
|
|
- }
|
|
|
- return total;
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (!info->xmit_buf)
|
|
|
- return;
|
|
|
-
|
|
|
- if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1)
|
|
|
- return;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- info->xmit_buf[info->xmit_head++] = ch;
|
|
|
- info->xmit_head &= SERIAL_XMIT_SIZE - 1;
|
|
|
- info->xmit_cnt++;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- if (!tty->stopped) {
|
|
|
- if (!tty->hw_stopped ||
|
|
|
- (info->type == PORT_16550A) ||
|
|
|
- info->board->chip_flag) {
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-static void mxser_flush_chars(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (info->xmit_cnt <= 0 ||
|
|
|
- tty->stopped ||
|
|
|
- !info->xmit_buf ||
|
|
|
- (tty->hw_stopped &&
|
|
|
- (info->type != PORT_16550A) &&
|
|
|
- (!info->board->chip_flag)
|
|
|
- ))
|
|
|
- return;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
-
|
|
|
- outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_write_room(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- int ret;
|
|
|
-
|
|
|
- ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
|
|
|
- if (ret < 0)
|
|
|
- ret = 0;
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_chars_in_buffer(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- return info->xmit_cnt;
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_flush_buffer(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- char fcr;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
|
|
-
|
|
|
- fcr = inb(info->ioaddr + UART_FCR);
|
|
|
- outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
|
|
|
- info->ioaddr + UART_FCR);
|
|
|
- outb(fcr, info->ioaddr + UART_FCR);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- tty_wakeup(tty);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * ------------------------------------------------------------
|
|
|
- * friends of mxser_ioctl()
|
|
|
- * ------------------------------------------------------------
|
|
|
- */
|
|
|
-static int mxser_get_serial_info(struct mxser_port *info,
|
|
|
- struct serial_struct __user *retinfo)
|
|
|
-{
|
|
|
- struct serial_struct tmp = {
|
|
|
- .type = info->type,
|
|
|
- .line = info->tty->index,
|
|
|
- .port = info->ioaddr,
|
|
|
- .irq = info->board->irq,
|
|
|
- .flags = info->flags,
|
|
|
- .baud_base = info->baud_base,
|
|
|
- .close_delay = info->close_delay,
|
|
|
- .closing_wait = info->closing_wait,
|
|
|
- .custom_divisor = info->custom_divisor,
|
|
|
- .hub6 = 0
|
|
|
- };
|
|
|
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
|
|
|
- return -EFAULT;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_set_serial_info(struct mxser_port *info,
|
|
|
- struct serial_struct __user *new_info)
|
|
|
-{
|
|
|
- struct serial_struct new_serial;
|
|
|
- unsigned long sl_flags;
|
|
|
- unsigned int flags;
|
|
|
- int retval = 0;
|
|
|
-
|
|
|
- if (!new_info || !info->ioaddr)
|
|
|
- return -EFAULT;
|
|
|
- if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- if ((new_serial.irq != info->board->irq) ||
|
|
|
- (new_serial.port != info->ioaddr) ||
|
|
|
- (new_serial.custom_divisor != info->custom_divisor) ||
|
|
|
- (new_serial.baud_base != info->baud_base))
|
|
|
- return -EPERM;
|
|
|
-
|
|
|
- flags = info->flags & ASYNC_SPD_MASK;
|
|
|
-
|
|
|
- if (!capable(CAP_SYS_ADMIN)) {
|
|
|
- if ((new_serial.baud_base != info->baud_base) ||
|
|
|
- (new_serial.close_delay != info->close_delay) ||
|
|
|
- ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
|
|
|
- return -EPERM;
|
|
|
- info->flags = ((info->flags & ~ASYNC_USR_MASK) |
|
|
|
- (new_serial.flags & ASYNC_USR_MASK));
|
|
|
- } else {
|
|
|
- /*
|
|
|
- * OK, past this point, all the error checking has been done.
|
|
|
- * At this point, we start making changes.....
|
|
|
- */
|
|
|
- info->flags = ((info->flags & ~ASYNC_FLAGS) |
|
|
|
- (new_serial.flags & ASYNC_FLAGS));
|
|
|
- info->close_delay = new_serial.close_delay * HZ / 100;
|
|
|
- info->closing_wait = new_serial.closing_wait * HZ / 100;
|
|
|
- info->tty->low_latency =
|
|
|
- (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
|
|
|
- info->tty->low_latency = 0;
|
|
|
- }
|
|
|
-
|
|
|
- info->type = new_serial.type;
|
|
|
-
|
|
|
- process_txrx_fifo(info);
|
|
|
-
|
|
|
- if (info->flags & ASYNC_INITIALIZED) {
|
|
|
- if (flags != (info->flags & ASYNC_SPD_MASK)) {
|
|
|
- spin_lock_irqsave(&info->slock, sl_flags);
|
|
|
- mxser_change_speed(info, NULL);
|
|
|
- spin_unlock_irqrestore(&info->slock, sl_flags);
|
|
|
- }
|
|
|
- } else
|
|
|
- retval = mxser_startup(info);
|
|
|
-
|
|
|
- return retval;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * mxser_get_lsr_info - get line status register info
|
|
|
- *
|
|
|
- * Purpose: Let user call ioctl() to get info when the UART physically
|
|
|
- * is emptied. On bus types like RS485, the transmitter must
|
|
|
- * release the bus after transmitting. This must be done when
|
|
|
- * the transmit shift register is empty, not be done when the
|
|
|
- * transmit holding register is empty. This functionality
|
|
|
- * allows an RS485 driver to be written in user space.
|
|
|
- */
|
|
|
-static int mxser_get_lsr_info(struct mxser_port *info,
|
|
|
- unsigned int __user *value)
|
|
|
-{
|
|
|
- unsigned char status;
|
|
|
- unsigned int result;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- status = inb(info->ioaddr + UART_LSR);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
|
|
|
- return put_user(result, value);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine sends a break character out the serial port.
|
|
|
- */
|
|
|
-static void mxser_send_break(struct mxser_port *info, int duration)
|
|
|
-{
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- if (!info->ioaddr)
|
|
|
- return;
|
|
|
- set_current_state(TASK_INTERRUPTIBLE);
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
|
|
|
- info->ioaddr + UART_LCR);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- schedule_timeout(duration);
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
|
|
|
- info->ioaddr + UART_LCR);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned char control, status;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
-
|
|
|
- if (tty->index == MXSER_PORTS)
|
|
|
- return -ENOIOCTLCMD;
|
|
|
- if (test_bit(TTY_IO_ERROR, &tty->flags))
|
|
|
- return -EIO;
|
|
|
-
|
|
|
- control = info->MCR;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- status = inb(info->ioaddr + UART_MSR);
|
|
|
- if (status & UART_MSR_ANY_DELTA)
|
|
|
- mxser_check_modem_status(info, status);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
|
|
|
- ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
|
|
|
- ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
|
|
|
- ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
|
|
|
- ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
|
|
|
- ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_tiocmset(struct tty_struct *tty, struct file *file,
|
|
|
- unsigned int set, unsigned int clear)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
-
|
|
|
- if (tty->index == MXSER_PORTS)
|
|
|
- return -ENOIOCTLCMD;
|
|
|
- if (test_bit(TTY_IO_ERROR, &tty->flags))
|
|
|
- return -EIO;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
-
|
|
|
- if (set & TIOCM_RTS)
|
|
|
- info->MCR |= UART_MCR_RTS;
|
|
|
- if (set & TIOCM_DTR)
|
|
|
- info->MCR |= UART_MCR_DTR;
|
|
|
-
|
|
|
- if (clear & TIOCM_RTS)
|
|
|
- info->MCR &= ~UART_MCR_RTS;
|
|
|
- if (clear & TIOCM_DTR)
|
|
|
- info->MCR &= ~UART_MCR_DTR;
|
|
|
-
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int __init mxser_program_mode(int port)
|
|
|
-{
|
|
|
- int id, i, j, n;
|
|
|
-
|
|
|
- outb(0, port);
|
|
|
- outb(0, port);
|
|
|
- outb(0, port);
|
|
|
- (void)inb(port);
|
|
|
- (void)inb(port);
|
|
|
- outb(0, port);
|
|
|
- (void)inb(port);
|
|
|
-
|
|
|
- id = inb(port + 1) & 0x1F;
|
|
|
- if ((id != C168_ASIC_ID) &&
|
|
|
- (id != C104_ASIC_ID) &&
|
|
|
- (id != C102_ASIC_ID) &&
|
|
|
- (id != CI132_ASIC_ID) &&
|
|
|
- (id != CI134_ASIC_ID) &&
|
|
|
- (id != CI104J_ASIC_ID))
|
|
|
- return -1;
|
|
|
- for (i = 0, j = 0; i < 4; i++) {
|
|
|
- n = inb(port + 2);
|
|
|
- if (n == 'M') {
|
|
|
- j = 1;
|
|
|
- } else if ((j == 1) && (n == 1)) {
|
|
|
- j = 2;
|
|
|
- break;
|
|
|
- } else
|
|
|
- j = 0;
|
|
|
- }
|
|
|
- if (j != 2)
|
|
|
- id = -2;
|
|
|
- return id;
|
|
|
-}
|
|
|
-
|
|
|
-static void __init mxser_normal_mode(int port)
|
|
|
-{
|
|
|
- int i, n;
|
|
|
-
|
|
|
- outb(0xA5, port + 1);
|
|
|
- outb(0x80, port + 3);
|
|
|
- outb(12, port + 0); /* 9600 bps */
|
|
|
- outb(0, port + 1);
|
|
|
- outb(0x03, port + 3); /* 8 data bits */
|
|
|
- outb(0x13, port + 4); /* loop back mode */
|
|
|
- for (i = 0; i < 16; i++) {
|
|
|
- n = inb(port + 5);
|
|
|
- if ((n & 0x61) == 0x60)
|
|
|
- break;
|
|
|
- if ((n & 1) == 1)
|
|
|
- (void)inb(port);
|
|
|
- }
|
|
|
- outb(0x00, port + 4);
|
|
|
-}
|
|
|
-
|
|
|
-#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
|
|
|
-#define CHIP_DO 0x02 /* Serial Data Output in Eprom */
|
|
|
-#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
|
|
|
-#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
|
|
|
-#define EN_CCMD 0x000 /* Chip's command register */
|
|
|
-#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
|
|
|
-#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
|
|
|
-#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
|
|
|
-#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
|
|
|
-#define EN0_DCFG 0x00E /* Data configuration reg WR */
|
|
|
-#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
|
|
|
-#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
|
|
|
-#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
|
|
|
-static int __init mxser_read_register(int port, unsigned short *regs)
|
|
|
-{
|
|
|
- int i, k, value, id;
|
|
|
- unsigned int j;
|
|
|
-
|
|
|
- id = mxser_program_mode(port);
|
|
|
- if (id < 0)
|
|
|
- return id;
|
|
|
- for (i = 0; i < 14; i++) {
|
|
|
- k = (i & 0x3F) | 0x180;
|
|
|
- for (j = 0x100; j > 0; j >>= 1) {
|
|
|
- outb(CHIP_CS, port);
|
|
|
- if (k & j) {
|
|
|
- outb(CHIP_CS | CHIP_DO, port);
|
|
|
- outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */
|
|
|
- } else {
|
|
|
- outb(CHIP_CS, port);
|
|
|
- outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */
|
|
|
- }
|
|
|
- }
|
|
|
- (void)inb(port);
|
|
|
- value = 0;
|
|
|
- for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
|
|
|
- outb(CHIP_CS, port);
|
|
|
- outb(CHIP_CS | CHIP_SK, port);
|
|
|
- if (inb(port) & CHIP_DI)
|
|
|
- value |= j;
|
|
|
- }
|
|
|
- regs[i] = value;
|
|
|
- outb(0, port);
|
|
|
- }
|
|
|
- mxser_normal_mode(port);
|
|
|
- return id;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
|
|
|
-{
|
|
|
- struct mxser_port *port;
|
|
|
- int result, status;
|
|
|
- unsigned int i, j;
|
|
|
-
|
|
|
- switch (cmd) {
|
|
|
- case MOXA_GET_MAJOR:
|
|
|
- return put_user(ttymajor, (int __user *)argp);
|
|
|
-
|
|
|
- case MOXA_CHKPORTENABLE:
|
|
|
- result = 0;
|
|
|
-
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++)
|
|
|
- for (j = 0; j < MXSER_PORTS_PER_BOARD; j++)
|
|
|
- if (mxser_boards[i].ports[j].ioaddr)
|
|
|
- result |= (1 << i);
|
|
|
-
|
|
|
- return put_user(result, (unsigned long __user *)argp);
|
|
|
- case MOXA_GETDATACOUNT:
|
|
|
- if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
|
|
|
- return -EFAULT;
|
|
|
- return 0;
|
|
|
- case MOXA_GETMSTATUS:
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++)
|
|
|
- for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
|
|
|
- port = &mxser_boards[i].ports[j];
|
|
|
-
|
|
|
- GMStatus[i].ri = 0;
|
|
|
- if (!port->ioaddr) {
|
|
|
- GMStatus[i].dcd = 0;
|
|
|
- GMStatus[i].dsr = 0;
|
|
|
- GMStatus[i].cts = 0;
|
|
|
- continue;
|
|
|
- }
|
|
|
-
|
|
|
- if (!port->tty || !port->tty->termios)
|
|
|
- GMStatus[i].cflag =
|
|
|
- port->normal_termios.c_cflag;
|
|
|
- else
|
|
|
- GMStatus[i].cflag =
|
|
|
- port->tty->termios->c_cflag;
|
|
|
-
|
|
|
- status = inb(port->ioaddr + UART_MSR);
|
|
|
- if (status & 0x80 /*UART_MSR_DCD */ )
|
|
|
- GMStatus[i].dcd = 1;
|
|
|
- else
|
|
|
- GMStatus[i].dcd = 0;
|
|
|
-
|
|
|
- if (status & 0x20 /*UART_MSR_DSR */ )
|
|
|
- GMStatus[i].dsr = 1;
|
|
|
- else
|
|
|
- GMStatus[i].dsr = 0;
|
|
|
-
|
|
|
-
|
|
|
- if (status & 0x10 /*UART_MSR_CTS */ )
|
|
|
- GMStatus[i].cts = 1;
|
|
|
- else
|
|
|
- GMStatus[i].cts = 0;
|
|
|
- }
|
|
|
- if (copy_to_user(argp, GMStatus,
|
|
|
- sizeof(struct mxser_mstatus) * MXSER_PORTS))
|
|
|
- return -EFAULT;
|
|
|
- return 0;
|
|
|
- case MOXA_ASPP_MON_EXT: {
|
|
|
- int p, shiftbit;
|
|
|
- unsigned long opmode;
|
|
|
- unsigned cflag, iflag;
|
|
|
-
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++)
|
|
|
- for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
|
|
|
- port = &mxser_boards[i].ports[j];
|
|
|
- if (!port->ioaddr)
|
|
|
- continue;
|
|
|
-
|
|
|
- status = mxser_get_msr(port->ioaddr, 0, i);
|
|
|
-
|
|
|
- if (status & UART_MSR_TERI)
|
|
|
- port->icount.rng++;
|
|
|
- if (status & UART_MSR_DDSR)
|
|
|
- port->icount.dsr++;
|
|
|
- if (status & UART_MSR_DDCD)
|
|
|
- port->icount.dcd++;
|
|
|
- if (status & UART_MSR_DCTS)
|
|
|
- port->icount.cts++;
|
|
|
-
|
|
|
- port->mon_data.modem_status = status;
|
|
|
- mon_data_ext.rx_cnt[i] = port->mon_data.rxcnt;
|
|
|
- mon_data_ext.tx_cnt[i] = port->mon_data.txcnt;
|
|
|
- mon_data_ext.up_rxcnt[i] =
|
|
|
- port->mon_data.up_rxcnt;
|
|
|
- mon_data_ext.up_txcnt[i] =
|
|
|
- port->mon_data.up_txcnt;
|
|
|
- mon_data_ext.modem_status[i] =
|
|
|
- port->mon_data.modem_status;
|
|
|
- mon_data_ext.baudrate[i] =
|
|
|
- tty_get_baud_rate(port->tty);
|
|
|
-
|
|
|
- if (!port->tty || !port->tty->termios) {
|
|
|
- cflag = port->normal_termios.c_cflag;
|
|
|
- iflag = port->normal_termios.c_iflag;
|
|
|
- } else {
|
|
|
- cflag = port->tty->termios->c_cflag;
|
|
|
- iflag = port->tty->termios->c_iflag;
|
|
|
- }
|
|
|
-
|
|
|
- mon_data_ext.databits[i] = cflag & CSIZE;
|
|
|
-
|
|
|
- mon_data_ext.stopbits[i] = cflag & CSTOPB;
|
|
|
-
|
|
|
- mon_data_ext.parity[i] =
|
|
|
- cflag & (PARENB | PARODD | CMSPAR);
|
|
|
-
|
|
|
- mon_data_ext.flowctrl[i] = 0x00;
|
|
|
-
|
|
|
- if (cflag & CRTSCTS)
|
|
|
- mon_data_ext.flowctrl[i] |= 0x03;
|
|
|
-
|
|
|
- if (iflag & (IXON | IXOFF))
|
|
|
- mon_data_ext.flowctrl[i] |= 0x0C;
|
|
|
-
|
|
|
- if (port->type == PORT_16550A)
|
|
|
- mon_data_ext.fifo[i] = 1;
|
|
|
- else
|
|
|
- mon_data_ext.fifo[i] = 0;
|
|
|
-
|
|
|
- p = i % 4;
|
|
|
- shiftbit = p * 2;
|
|
|
- opmode = inb(port->opmode_ioaddr) >> shiftbit;
|
|
|
- opmode &= OP_MODE_MASK;
|
|
|
-
|
|
|
- mon_data_ext.iftype[i] = opmode;
|
|
|
-
|
|
|
- }
|
|
|
- if (copy_to_user(argp, &mon_data_ext,
|
|
|
- sizeof(mon_data_ext)))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
- } default:
|
|
|
- return -ENOIOCTLCMD;
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg,
|
|
|
- struct async_icount *cprev)
|
|
|
-{
|
|
|
- struct async_icount cnow;
|
|
|
- unsigned long flags;
|
|
|
- int ret;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- cnow = info->icount; /* atomic copy */
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
|
|
|
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
|
|
|
- ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
|
|
|
- ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
|
|
|
-
|
|
|
- *cprev = cnow;
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-static int mxser_ioctl(struct tty_struct *tty, struct file *file,
|
|
|
- unsigned int cmd, unsigned long arg)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- struct async_icount cnow;
|
|
|
- struct serial_icounter_struct __user *p_cuser;
|
|
|
- unsigned long flags;
|
|
|
- void __user *argp = (void __user *)arg;
|
|
|
- int retval;
|
|
|
-
|
|
|
- if (tty->index == MXSER_PORTS)
|
|
|
- return mxser_ioctl_special(cmd, argp);
|
|
|
-
|
|
|
- if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
|
|
|
- int p;
|
|
|
- unsigned long opmode;
|
|
|
- static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
|
|
|
- int shiftbit;
|
|
|
- unsigned char val, mask;
|
|
|
-
|
|
|
- p = tty->index % 4;
|
|
|
- if (cmd == MOXA_SET_OP_MODE) {
|
|
|
- if (get_user(opmode, (int __user *) argp))
|
|
|
- return -EFAULT;
|
|
|
- if (opmode != RS232_MODE &&
|
|
|
- opmode != RS485_2WIRE_MODE &&
|
|
|
- opmode != RS422_MODE &&
|
|
|
- opmode != RS485_4WIRE_MODE)
|
|
|
- return -EFAULT;
|
|
|
- mask = ModeMask[p];
|
|
|
- shiftbit = p * 2;
|
|
|
- val = inb(info->opmode_ioaddr);
|
|
|
- val &= mask;
|
|
|
- val |= (opmode << shiftbit);
|
|
|
- outb(val, info->opmode_ioaddr);
|
|
|
- } else {
|
|
|
- shiftbit = p * 2;
|
|
|
- opmode = inb(info->opmode_ioaddr) >> shiftbit;
|
|
|
- opmode &= OP_MODE_MASK;
|
|
|
- if (put_user(opmode, (int __user *)argp))
|
|
|
- return -EFAULT;
|
|
|
- }
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT &&
|
|
|
- test_bit(TTY_IO_ERROR, &tty->flags))
|
|
|
- return -EIO;
|
|
|
-
|
|
|
- switch (cmd) {
|
|
|
- case TCSBRK: /* SVID version: non-zero arg --> no break */
|
|
|
- retval = tty_check_change(tty);
|
|
|
- if (retval)
|
|
|
- return retval;
|
|
|
- tty_wait_until_sent(tty, 0);
|
|
|
- if (!arg)
|
|
|
- mxser_send_break(info, HZ / 4); /* 1/4 second */
|
|
|
- return 0;
|
|
|
- case TCSBRKP: /* support for POSIX tcsendbreak() */
|
|
|
- retval = tty_check_change(tty);
|
|
|
- if (retval)
|
|
|
- return retval;
|
|
|
- tty_wait_until_sent(tty, 0);
|
|
|
- mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
|
|
|
- return 0;
|
|
|
- case TIOCGSOFTCAR:
|
|
|
- return put_user(!!C_CLOCAL(tty), (unsigned long __user *)argp);
|
|
|
- case TIOCSSOFTCAR:
|
|
|
- if (get_user(arg, (unsigned long __user *)argp))
|
|
|
- return -EFAULT;
|
|
|
- tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
|
|
|
- return 0;
|
|
|
- case TIOCGSERIAL:
|
|
|
- return mxser_get_serial_info(info, argp);
|
|
|
- case TIOCSSERIAL:
|
|
|
- return mxser_set_serial_info(info, argp);
|
|
|
- case TIOCSERGETLSR: /* Get line status register */
|
|
|
- return mxser_get_lsr_info(info, argp);
|
|
|
- /*
|
|
|
- * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
|
|
|
- * - mask passed in arg for lines of interest
|
|
|
- * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
|
|
|
- * Caller should use TIOCGICOUNT to see which one it was
|
|
|
- */
|
|
|
- case TIOCMIWAIT:
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- cnow = info->icount; /* note the counters on entry */
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- return wait_event_interruptible(info->delta_msr_wait,
|
|
|
- mxser_cflags_changed(info, arg, &cnow));
|
|
|
- /*
|
|
|
- * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
|
|
- * Return: write counters to the user passed counter struct
|
|
|
- * NB: both 1->0 and 0->1 transitions are counted except for
|
|
|
- * RI where only 0->1 is counted.
|
|
|
- */
|
|
|
- case TIOCGICOUNT:
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- cnow = info->icount;
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- p_cuser = argp;
|
|
|
- if (put_user(cnow.frame, &p_cuser->frame))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.brk, &p_cuser->brk))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.overrun, &p_cuser->overrun))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.parity, &p_cuser->parity))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.rx, &p_cuser->rx))
|
|
|
- return -EFAULT;
|
|
|
- if (put_user(cnow.tx, &p_cuser->tx))
|
|
|
- return -EFAULT;
|
|
|
- put_user(cnow.cts, &p_cuser->cts);
|
|
|
- put_user(cnow.dsr, &p_cuser->dsr);
|
|
|
- put_user(cnow.rng, &p_cuser->rng);
|
|
|
- put_user(cnow.dcd, &p_cuser->dcd);
|
|
|
- return 0;
|
|
|
- case MOXA_HighSpeedOn:
|
|
|
- return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
|
|
|
- case MOXA_SDS_RSTICOUNTER:
|
|
|
- info->mon_data.rxcnt = 0;
|
|
|
- info->mon_data.txcnt = 0;
|
|
|
- return 0;
|
|
|
-
|
|
|
- case MOXA_ASPP_OQUEUE:{
|
|
|
- int len, lsr;
|
|
|
-
|
|
|
- len = mxser_chars_in_buffer(tty);
|
|
|
-
|
|
|
- lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
|
|
|
-
|
|
|
- len += (lsr ? 0 : 1);
|
|
|
-
|
|
|
- return put_user(len, (int __user *)argp);
|
|
|
- }
|
|
|
- case MOXA_ASPP_MON: {
|
|
|
- int mcr, status;
|
|
|
-
|
|
|
- status = mxser_get_msr(info->ioaddr, 1, tty->index);
|
|
|
- mxser_check_modem_status(info, status);
|
|
|
-
|
|
|
- mcr = inb(info->ioaddr + UART_MCR);
|
|
|
- if (mcr & MOXA_MUST_MCR_XON_FLAG)
|
|
|
- info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
|
|
|
- else
|
|
|
- info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
|
|
|
-
|
|
|
- if (mcr & MOXA_MUST_MCR_TX_XON)
|
|
|
- info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
|
|
|
- else
|
|
|
- info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
|
|
|
-
|
|
|
- if (info->tty->hw_stopped)
|
|
|
- info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
|
|
|
- else
|
|
|
- info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
|
|
|
-
|
|
|
- if (copy_to_user(argp, &info->mon_data,
|
|
|
- sizeof(struct mxser_mon)))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- return 0;
|
|
|
- }
|
|
|
- case MOXA_ASPP_LSTATUS: {
|
|
|
- if (put_user(info->err_shadow, (unsigned char __user *)argp))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- info->err_shadow = 0;
|
|
|
- return 0;
|
|
|
- }
|
|
|
- case MOXA_SET_BAUD_METHOD: {
|
|
|
- int method;
|
|
|
-
|
|
|
- if (get_user(method, (int __user *)argp))
|
|
|
- return -EFAULT;
|
|
|
- mxser_set_baud_method[tty->index] = method;
|
|
|
- return put_user(method, (int __user *)argp);
|
|
|
- }
|
|
|
- default:
|
|
|
- return -ENOIOCTLCMD;
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_stoprx(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
-
|
|
|
- info->ldisc_stop_rx = 1;
|
|
|
- if (I_IXOFF(tty)) {
|
|
|
- if (info->board->chip_flag) {
|
|
|
- info->IER &= ~MOXA_MUST_RECV_ISR;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- } else {
|
|
|
- info->x_char = STOP_CHAR(tty);
|
|
|
- outb(0, info->ioaddr + UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (info->tty->termios->c_cflag & CRTSCTS) {
|
|
|
- info->MCR &= ~UART_MCR_RTS;
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine is called by the upper-layer tty layer to signal that
|
|
|
- * incoming characters should be throttled.
|
|
|
- */
|
|
|
-static void mxser_throttle(struct tty_struct *tty)
|
|
|
-{
|
|
|
- mxser_stoprx(tty);
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_unthrottle(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
-
|
|
|
- /* startrx */
|
|
|
- info->ldisc_stop_rx = 0;
|
|
|
- if (I_IXOFF(tty)) {
|
|
|
- if (info->x_char)
|
|
|
- info->x_char = 0;
|
|
|
- else {
|
|
|
- if (info->board->chip_flag) {
|
|
|
- info->IER |= MOXA_MUST_RECV_ISR;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- } else {
|
|
|
- info->x_char = START_CHAR(tty);
|
|
|
- outb(0, info->ioaddr + UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (info->tty->termios->c_cflag & CRTSCTS) {
|
|
|
- info->MCR |= UART_MCR_RTS;
|
|
|
- outb(info->MCR, info->ioaddr + UART_MCR);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * mxser_stop() and mxser_start()
|
|
|
- *
|
|
|
- * This routines are called before setting or resetting tty->stopped.
|
|
|
- * They enable or disable transmitter interrupts, as necessary.
|
|
|
- */
|
|
|
-static void mxser_stop(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- if (info->IER & UART_IER_THRI) {
|
|
|
- info->IER &= ~UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- }
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_start(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- if (info->xmit_cnt && info->xmit_buf) {
|
|
|
- outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
|
|
- info->IER |= UART_IER_THRI;
|
|
|
- outb(info->IER, info->ioaddr + UART_IER);
|
|
|
- }
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- mxser_change_speed(info, old_termios);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-
|
|
|
- if ((old_termios->c_cflag & CRTSCTS) &&
|
|
|
- !(tty->termios->c_cflag & CRTSCTS)) {
|
|
|
- tty->hw_stopped = 0;
|
|
|
- mxser_start(tty);
|
|
|
- }
|
|
|
-
|
|
|
- /* Handle sw stopped */
|
|
|
- if ((old_termios->c_iflag & IXON) &&
|
|
|
- !(tty->termios->c_iflag & IXON)) {
|
|
|
- tty->stopped = 0;
|
|
|
-
|
|
|
- if (info->board->chip_flag) {
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
- }
|
|
|
-
|
|
|
- mxser_start(tty);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * mxser_wait_until_sent() --- wait until the transmitter is empty
|
|
|
- */
|
|
|
-static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long orig_jiffies, char_time;
|
|
|
- int lsr;
|
|
|
-
|
|
|
- if (info->type == PORT_UNKNOWN)
|
|
|
- return;
|
|
|
-
|
|
|
- if (info->xmit_fifo_size == 0)
|
|
|
- return; /* Just in case.... */
|
|
|
-
|
|
|
- orig_jiffies = jiffies;
|
|
|
- /*
|
|
|
- * Set the check interval to be 1/5 of the estimated time to
|
|
|
- * send a single character, and make it at least 1. The check
|
|
|
- * interval should also be less than the timeout.
|
|
|
- *
|
|
|
- * Note: we have to use pretty tight timings here to satisfy
|
|
|
- * the NIST-PCTS.
|
|
|
- */
|
|
|
- char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
|
|
|
- char_time = char_time / 5;
|
|
|
- if (char_time == 0)
|
|
|
- char_time = 1;
|
|
|
- if (timeout && timeout < char_time)
|
|
|
- char_time = timeout;
|
|
|
- /*
|
|
|
- * If the transmitter hasn't cleared in twice the approximate
|
|
|
- * amount of time to send the entire FIFO, it probably won't
|
|
|
- * ever clear. This assumes the UART isn't doing flow
|
|
|
- * control, which is currently the case. Hence, if it ever
|
|
|
- * takes longer than info->timeout, this is probably due to a
|
|
|
- * UART bug of some kind. So, we clamp the timeout parameter at
|
|
|
- * 2*info->timeout.
|
|
|
- */
|
|
|
- if (!timeout || timeout > 2 * info->timeout)
|
|
|
- timeout = 2 * info->timeout;
|
|
|
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
|
|
- printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...",
|
|
|
- timeout, char_time);
|
|
|
- printk("jiff=%lu...", jiffies);
|
|
|
-#endif
|
|
|
- while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) {
|
|
|
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
|
|
- printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
|
|
|
-#endif
|
|
|
- schedule_timeout_interruptible(char_time);
|
|
|
- if (signal_pending(current))
|
|
|
- break;
|
|
|
- if (timeout && time_after(jiffies, orig_jiffies + timeout))
|
|
|
- break;
|
|
|
- }
|
|
|
- set_current_state(TASK_RUNNING);
|
|
|
-
|
|
|
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
|
|
- printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine is called by tty_hangup() when a hangup is signaled.
|
|
|
- */
|
|
|
-static void mxser_hangup(struct tty_struct *tty)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
-
|
|
|
- mxser_flush_buffer(tty);
|
|
|
- mxser_shutdown(info);
|
|
|
- info->event = 0;
|
|
|
- info->count = 0;
|
|
|
- info->flags &= ~ASYNC_NORMAL_ACTIVE;
|
|
|
- info->tty = NULL;
|
|
|
- wake_up_interruptible(&info->open_wait);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * mxser_rs_break() --- routine which turns the break handling on or off
|
|
|
- */
|
|
|
-static void mxser_rs_break(struct tty_struct *tty, int break_state)
|
|
|
-{
|
|
|
- struct mxser_port *info = tty->driver_data;
|
|
|
- unsigned long flags;
|
|
|
-
|
|
|
- spin_lock_irqsave(&info->slock, flags);
|
|
|
- if (break_state == -1)
|
|
|
- outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
|
|
|
- info->ioaddr + UART_LCR);
|
|
|
- else
|
|
|
- outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
|
|
|
- info->ioaddr + UART_LCR);
|
|
|
- spin_unlock_irqrestore(&info->slock, flags);
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_receive_chars(struct mxser_port *port, int *status)
|
|
|
-{
|
|
|
- struct tty_struct *tty = port->tty;
|
|
|
- unsigned char ch, gdl;
|
|
|
- int ignored = 0;
|
|
|
- int cnt = 0;
|
|
|
- int recv_room;
|
|
|
- int max = 256;
|
|
|
-
|
|
|
- recv_room = tty->receive_room;
|
|
|
- if ((recv_room == 0) && (!port->ldisc_stop_rx))
|
|
|
- mxser_stoprx(tty);
|
|
|
-
|
|
|
- if (port->board->chip_flag != MOXA_OTHER_UART) {
|
|
|
-
|
|
|
- if (*status & UART_LSR_SPECIAL)
|
|
|
- goto intr_old;
|
|
|
- if (port->board->chip_flag == MOXA_MUST_MU860_HWID &&
|
|
|
- (*status & MOXA_MUST_LSR_RERR))
|
|
|
- goto intr_old;
|
|
|
- if (*status & MOXA_MUST_LSR_RERR)
|
|
|
- goto intr_old;
|
|
|
-
|
|
|
- gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
|
|
|
-
|
|
|
- if (port->board->chip_flag == MOXA_MUST_MU150_HWID)
|
|
|
- gdl &= MOXA_MUST_GDL_MASK;
|
|
|
- if (gdl >= recv_room) {
|
|
|
- if (!port->ldisc_stop_rx)
|
|
|
- mxser_stoprx(tty);
|
|
|
- }
|
|
|
- while (gdl--) {
|
|
|
- ch = inb(port->ioaddr + UART_RX);
|
|
|
- tty_insert_flip_char(tty, ch, 0);
|
|
|
- cnt++;
|
|
|
- }
|
|
|
- goto end_intr;
|
|
|
- }
|
|
|
-intr_old:
|
|
|
-
|
|
|
- do {
|
|
|
- if (max-- < 0)
|
|
|
- break;
|
|
|
-
|
|
|
- ch = inb(port->ioaddr + UART_RX);
|
|
|
- if (port->board->chip_flag && (*status & UART_LSR_OE))
|
|
|
- outb(0x23, port->ioaddr + UART_FCR);
|
|
|
- *status &= port->read_status_mask;
|
|
|
- if (*status & port->ignore_status_mask) {
|
|
|
- if (++ignored > 100)
|
|
|
- break;
|
|
|
- } else {
|
|
|
- char flag = 0;
|
|
|
- if (*status & UART_LSR_SPECIAL) {
|
|
|
- if (*status & UART_LSR_BI) {
|
|
|
- flag = TTY_BREAK;
|
|
|
- port->icount.brk++;
|
|
|
-
|
|
|
- if (port->flags & ASYNC_SAK)
|
|
|
- do_SAK(tty);
|
|
|
- } else if (*status & UART_LSR_PE) {
|
|
|
- flag = TTY_PARITY;
|
|
|
- port->icount.parity++;
|
|
|
- } else if (*status & UART_LSR_FE) {
|
|
|
- flag = TTY_FRAME;
|
|
|
- port->icount.frame++;
|
|
|
- } else if (*status & UART_LSR_OE) {
|
|
|
- flag = TTY_OVERRUN;
|
|
|
- port->icount.overrun++;
|
|
|
- } else
|
|
|
- flag = TTY_BREAK;
|
|
|
- }
|
|
|
- tty_insert_flip_char(tty, ch, flag);
|
|
|
- cnt++;
|
|
|
- if (cnt >= recv_room) {
|
|
|
- if (!port->ldisc_stop_rx)
|
|
|
- mxser_stoprx(tty);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if (port->board->chip_flag)
|
|
|
- break;
|
|
|
-
|
|
|
- *status = inb(port->ioaddr + UART_LSR);
|
|
|
- } while (*status & UART_LSR_DR);
|
|
|
-
|
|
|
-end_intr:
|
|
|
- mxvar_log.rxcnt[port->tty->index] += cnt;
|
|
|
- port->mon_data.rxcnt += cnt;
|
|
|
- port->mon_data.up_rxcnt += cnt;
|
|
|
-
|
|
|
- /*
|
|
|
- * We are called from an interrupt context with &port->slock
|
|
|
- * being held. Drop it temporarily in order to prevent
|
|
|
- * recursive locking.
|
|
|
- */
|
|
|
- spin_unlock(&port->slock);
|
|
|
- tty_flip_buffer_push(tty);
|
|
|
- spin_lock(&port->slock);
|
|
|
-}
|
|
|
-
|
|
|
-static void mxser_transmit_chars(struct mxser_port *port)
|
|
|
-{
|
|
|
- int count, cnt;
|
|
|
-
|
|
|
- if (port->x_char) {
|
|
|
- outb(port->x_char, port->ioaddr + UART_TX);
|
|
|
- port->x_char = 0;
|
|
|
- mxvar_log.txcnt[port->tty->index]++;
|
|
|
- port->mon_data.txcnt++;
|
|
|
- port->mon_data.up_txcnt++;
|
|
|
- port->icount.tx++;
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- if (port->xmit_buf == NULL)
|
|
|
- return;
|
|
|
-
|
|
|
- if ((port->xmit_cnt <= 0) || port->tty->stopped ||
|
|
|
- (port->tty->hw_stopped &&
|
|
|
- (port->type != PORT_16550A) &&
|
|
|
- (!port->board->chip_flag))) {
|
|
|
- port->IER &= ~UART_IER_THRI;
|
|
|
- outb(port->IER, port->ioaddr + UART_IER);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- cnt = port->xmit_cnt;
|
|
|
- count = port->xmit_fifo_size;
|
|
|
- do {
|
|
|
- outb(port->xmit_buf[port->xmit_tail++],
|
|
|
- port->ioaddr + UART_TX);
|
|
|
- port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1);
|
|
|
- if (--port->xmit_cnt <= 0)
|
|
|
- break;
|
|
|
- } while (--count > 0);
|
|
|
- mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt);
|
|
|
-
|
|
|
- port->mon_data.txcnt += (cnt - port->xmit_cnt);
|
|
|
- port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
|
|
|
- port->icount.tx += (cnt - port->xmit_cnt);
|
|
|
-
|
|
|
- if (port->xmit_cnt < WAKEUP_CHARS)
|
|
|
- tty_wakeup(port->tty);
|
|
|
-
|
|
|
- if (port->xmit_cnt <= 0) {
|
|
|
- port->IER &= ~UART_IER_THRI;
|
|
|
- outb(port->IER, port->ioaddr + UART_IER);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This is the serial driver's generic interrupt routine
|
|
|
- */
|
|
|
-static irqreturn_t mxser_interrupt(int irq, void *dev_id)
|
|
|
-{
|
|
|
- int status, iir, i;
|
|
|
- struct mxser_board *brd = NULL;
|
|
|
- struct mxser_port *port;
|
|
|
- int max, irqbits, bits, msr;
|
|
|
- unsigned int int_cnt, pass_counter = 0;
|
|
|
- int handled = IRQ_NONE;
|
|
|
-
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++)
|
|
|
- if (dev_id == &mxser_boards[i]) {
|
|
|
- brd = dev_id;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (i == MXSER_BOARDS)
|
|
|
- goto irq_stop;
|
|
|
- if (brd == NULL)
|
|
|
- goto irq_stop;
|
|
|
- max = brd->info->nports;
|
|
|
- while (pass_counter++ < MXSER_ISR_PASS_LIMIT) {
|
|
|
- irqbits = inb(brd->vector) & brd->vector_mask;
|
|
|
- if (irqbits == brd->vector_mask)
|
|
|
- break;
|
|
|
-
|
|
|
- handled = IRQ_HANDLED;
|
|
|
- for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
|
|
|
- if (irqbits == brd->vector_mask)
|
|
|
- break;
|
|
|
- if (bits & irqbits)
|
|
|
- continue;
|
|
|
- port = &brd->ports[i];
|
|
|
-
|
|
|
- int_cnt = 0;
|
|
|
- spin_lock(&port->slock);
|
|
|
- do {
|
|
|
- iir = inb(port->ioaddr + UART_IIR);
|
|
|
- if (iir & UART_IIR_NO_INT)
|
|
|
- break;
|
|
|
- iir &= MOXA_MUST_IIR_MASK;
|
|
|
- if (!port->tty ||
|
|
|
- (port->flags & ASYNC_CLOSING) ||
|
|
|
- !(port->flags &
|
|
|
- ASYNC_INITIALIZED)) {
|
|
|
- status = inb(port->ioaddr + UART_LSR);
|
|
|
- outb(0x27, port->ioaddr + UART_FCR);
|
|
|
- inb(port->ioaddr + UART_MSR);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- status = inb(port->ioaddr + UART_LSR);
|
|
|
-
|
|
|
- if (status & UART_LSR_PE)
|
|
|
- port->err_shadow |= NPPI_NOTIFY_PARITY;
|
|
|
- if (status & UART_LSR_FE)
|
|
|
- port->err_shadow |= NPPI_NOTIFY_FRAMING;
|
|
|
- if (status & UART_LSR_OE)
|
|
|
- port->err_shadow |=
|
|
|
- NPPI_NOTIFY_HW_OVERRUN;
|
|
|
- if (status & UART_LSR_BI)
|
|
|
- port->err_shadow |= NPPI_NOTIFY_BREAK;
|
|
|
-
|
|
|
- if (port->board->chip_flag) {
|
|
|
- if (iir == MOXA_MUST_IIR_GDA ||
|
|
|
- iir == MOXA_MUST_IIR_RDA ||
|
|
|
- iir == MOXA_MUST_IIR_RTO ||
|
|
|
- iir == MOXA_MUST_IIR_LSR)
|
|
|
- mxser_receive_chars(port,
|
|
|
- &status);
|
|
|
-
|
|
|
- } else {
|
|
|
- status &= port->read_status_mask;
|
|
|
- if (status & UART_LSR_DR)
|
|
|
- mxser_receive_chars(port,
|
|
|
- &status);
|
|
|
- }
|
|
|
- msr = inb(port->ioaddr + UART_MSR);
|
|
|
- if (msr & UART_MSR_ANY_DELTA)
|
|
|
- mxser_check_modem_status(port, msr);
|
|
|
-
|
|
|
- if (port->board->chip_flag) {
|
|
|
- if (iir == 0x02 && (status &
|
|
|
- UART_LSR_THRE))
|
|
|
- mxser_transmit_chars(port);
|
|
|
- } else {
|
|
|
- if (status & UART_LSR_THRE)
|
|
|
- mxser_transmit_chars(port);
|
|
|
- }
|
|
|
- } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
|
|
|
- spin_unlock(&port->slock);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-irq_stop:
|
|
|
- return handled;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct tty_operations mxser_ops = {
|
|
|
- .open = mxser_open,
|
|
|
- .close = mxser_close,
|
|
|
- .write = mxser_write,
|
|
|
- .put_char = mxser_put_char,
|
|
|
- .flush_chars = mxser_flush_chars,
|
|
|
- .write_room = mxser_write_room,
|
|
|
- .chars_in_buffer = mxser_chars_in_buffer,
|
|
|
- .flush_buffer = mxser_flush_buffer,
|
|
|
- .ioctl = mxser_ioctl,
|
|
|
- .throttle = mxser_throttle,
|
|
|
- .unthrottle = mxser_unthrottle,
|
|
|
- .set_termios = mxser_set_termios,
|
|
|
- .stop = mxser_stop,
|
|
|
- .start = mxser_start,
|
|
|
- .hangup = mxser_hangup,
|
|
|
- .break_ctl = mxser_rs_break,
|
|
|
- .wait_until_sent = mxser_wait_until_sent,
|
|
|
- .tiocmget = mxser_tiocmget,
|
|
|
- .tiocmset = mxser_tiocmset,
|
|
|
-};
|
|
|
-
|
|
|
-/*
|
|
|
- * The MOXA Smartio/Industio serial driver boot-time initialization code!
|
|
|
- */
|
|
|
-
|
|
|
-static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev,
|
|
|
- unsigned int irq)
|
|
|
-{
|
|
|
- if (irq)
|
|
|
- free_irq(brd->irq, brd);
|
|
|
- if (pdev != NULL) { /* PCI */
|
|
|
-#ifdef CONFIG_PCI
|
|
|
- pci_release_region(pdev, 2);
|
|
|
- pci_release_region(pdev, 3);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
|
|
|
- release_region(brd->vector, 1);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int __devinit mxser_initbrd(struct mxser_board *brd,
|
|
|
- struct pci_dev *pdev)
|
|
|
-{
|
|
|
- struct mxser_port *info;
|
|
|
- unsigned int i;
|
|
|
- int retval;
|
|
|
-
|
|
|
- printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
|
|
|
-
|
|
|
- for (i = 0; i < brd->info->nports; i++) {
|
|
|
- info = &brd->ports[i];
|
|
|
- info->board = brd;
|
|
|
- info->stop_rx = 0;
|
|
|
- info->ldisc_stop_rx = 0;
|
|
|
-
|
|
|
- /* Enhance mode enabled here */
|
|
|
- if (brd->chip_flag != MOXA_OTHER_UART)
|
|
|
- ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
|
|
|
-
|
|
|
- info->flags = ASYNC_SHARE_IRQ;
|
|
|
- info->type = brd->uart_type;
|
|
|
-
|
|
|
- process_txrx_fifo(info);
|
|
|
-
|
|
|
- info->custom_divisor = info->baud_base * 16;
|
|
|
- info->close_delay = 5 * HZ / 10;
|
|
|
- info->closing_wait = 30 * HZ;
|
|
|
- info->normal_termios = mxvar_sdriver->init_termios;
|
|
|
- init_waitqueue_head(&info->open_wait);
|
|
|
- init_waitqueue_head(&info->delta_msr_wait);
|
|
|
- memset(&info->mon_data, 0, sizeof(struct mxser_mon));
|
|
|
- info->err_shadow = 0;
|
|
|
- spin_lock_init(&info->slock);
|
|
|
-
|
|
|
- /* before set INT ISR, disable all int */
|
|
|
- outb(inb(info->ioaddr + UART_IER) & 0xf0,
|
|
|
- info->ioaddr + UART_IER);
|
|
|
- }
|
|
|
-
|
|
|
- retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser",
|
|
|
- brd);
|
|
|
- if (retval) {
|
|
|
- printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
|
|
|
- "conflict with another device.\n",
|
|
|
- brd->info->name, brd->irq);
|
|
|
- /* We hold resources, we need to release them. */
|
|
|
- mxser_release_res(brd, pdev, 0);
|
|
|
- }
|
|
|
- return retval;
|
|
|
-}
|
|
|
-
|
|
|
-static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
|
|
|
-{
|
|
|
- int id, i, bits;
|
|
|
- unsigned short regs[16], irq;
|
|
|
- unsigned char scratch, scratch2;
|
|
|
-
|
|
|
- brd->chip_flag = MOXA_OTHER_UART;
|
|
|
-
|
|
|
- id = mxser_read_register(cap, regs);
|
|
|
- switch (id) {
|
|
|
- case C168_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[0];
|
|
|
- break;
|
|
|
- case C104_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[1];
|
|
|
- break;
|
|
|
- case CI104J_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[2];
|
|
|
- break;
|
|
|
- case C102_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[5];
|
|
|
- break;
|
|
|
- case CI132_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[6];
|
|
|
- break;
|
|
|
- case CI134_ASIC_ID:
|
|
|
- brd->info = &mxser_cards[7];
|
|
|
- break;
|
|
|
- default:
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- irq = 0;
|
|
|
- /* some ISA cards have 2 ports, but we want to see them as 4-port (why?)
|
|
|
- Flag-hack checks if configuration should be read as 2-port here. */
|
|
|
- if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) {
|
|
|
- irq = regs[9] & 0xF000;
|
|
|
- irq = irq | (irq >> 4);
|
|
|
- if (irq != (regs[9] & 0xFF00))
|
|
|
- return MXSER_ERR_IRQ_CONFLIT;
|
|
|
- } else if (brd->info->nports == 4) {
|
|
|
- irq = regs[9] & 0xF000;
|
|
|
- irq = irq | (irq >> 4);
|
|
|
- irq = irq | (irq >> 8);
|
|
|
- if (irq != regs[9])
|
|
|
- return MXSER_ERR_IRQ_CONFLIT;
|
|
|
- } else if (brd->info->nports == 8) {
|
|
|
- irq = regs[9] & 0xF000;
|
|
|
- irq = irq | (irq >> 4);
|
|
|
- irq = irq | (irq >> 8);
|
|
|
- if ((irq != regs[9]) || (irq != regs[10]))
|
|
|
- return MXSER_ERR_IRQ_CONFLIT;
|
|
|
- }
|
|
|
-
|
|
|
- if (!irq)
|
|
|
- return MXSER_ERR_IRQ;
|
|
|
- brd->irq = ((int)(irq & 0xF000) >> 12);
|
|
|
- for (i = 0; i < 8; i++)
|
|
|
- brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8;
|
|
|
- if ((regs[12] & 0x80) == 0)
|
|
|
- return MXSER_ERR_VECTOR;
|
|
|
- brd->vector = (int)regs[11]; /* interrupt vector */
|
|
|
- if (id == 1)
|
|
|
- brd->vector_mask = 0x00FF;
|
|
|
- else
|
|
|
- brd->vector_mask = 0x000F;
|
|
|
- for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
|
|
|
- if (regs[12] & bits) {
|
|
|
- brd->ports[i].baud_base = 921600;
|
|
|
- brd->ports[i].max_baud = 921600;
|
|
|
- } else {
|
|
|
- brd->ports[i].baud_base = 115200;
|
|
|
- brd->ports[i].max_baud = 115200;
|
|
|
- }
|
|
|
- }
|
|
|
- scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
|
|
|
- outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
|
|
|
- outb(0, cap + UART_EFR); /* EFR is the same as FCR */
|
|
|
- outb(scratch2, cap + UART_LCR);
|
|
|
- outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
|
|
|
- scratch = inb(cap + UART_IIR);
|
|
|
-
|
|
|
- if (scratch & 0xC0)
|
|
|
- brd->uart_type = PORT_16550A;
|
|
|
- else
|
|
|
- brd->uart_type = PORT_16450;
|
|
|
- if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports,
|
|
|
- "mxser(IO)"))
|
|
|
- return MXSER_ERR_IOADDR;
|
|
|
- if (!request_region(brd->vector, 1, "mxser(vector)")) {
|
|
|
- release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
|
|
|
- return MXSER_ERR_VECTOR;
|
|
|
- }
|
|
|
- return brd->info->nports;
|
|
|
-}
|
|
|
-
|
|
|
-static int __devinit mxser_probe(struct pci_dev *pdev,
|
|
|
- const struct pci_device_id *ent)
|
|
|
-{
|
|
|
-#ifdef CONFIG_PCI
|
|
|
- struct mxser_board *brd;
|
|
|
- unsigned int i, j;
|
|
|
- unsigned long ioaddress;
|
|
|
- int retval = -EINVAL;
|
|
|
-
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++)
|
|
|
- if (mxser_boards[i].info == NULL)
|
|
|
- break;
|
|
|
-
|
|
|
- if (i >= MXSER_BOARDS) {
|
|
|
- printk(KERN_ERR "Too many Smartio/Industio family boards found "
|
|
|
- "(maximum %d), board not configured\n", MXSER_BOARDS);
|
|
|
- goto err;
|
|
|
- }
|
|
|
-
|
|
|
- brd = &mxser_boards[i];
|
|
|
- brd->idx = i * MXSER_PORTS_PER_BOARD;
|
|
|
- printk(KERN_INFO "Found MOXA %s board (BusNo=%d, DevNo=%d)\n",
|
|
|
- mxser_cards[ent->driver_data].name,
|
|
|
- pdev->bus->number, PCI_SLOT(pdev->devfn));
|
|
|
-
|
|
|
- retval = pci_enable_device(pdev);
|
|
|
- if (retval) {
|
|
|
- printk(KERN_ERR "Moxa SmartI/O PCI enable fail !\n");
|
|
|
- goto err;
|
|
|
- }
|
|
|
-
|
|
|
- /* io address */
|
|
|
- ioaddress = pci_resource_start(pdev, 2);
|
|
|
- retval = pci_request_region(pdev, 2, "mxser(IO)");
|
|
|
- if (retval)
|
|
|
- goto err;
|
|
|
-
|
|
|
- brd->info = &mxser_cards[ent->driver_data];
|
|
|
- for (i = 0; i < brd->info->nports; i++)
|
|
|
- brd->ports[i].ioaddr = ioaddress + 8 * i;
|
|
|
-
|
|
|
- /* vector */
|
|
|
- ioaddress = pci_resource_start(pdev, 3);
|
|
|
- retval = pci_request_region(pdev, 3, "mxser(vector)");
|
|
|
- if (retval)
|
|
|
- goto err_relio;
|
|
|
- brd->vector = ioaddress;
|
|
|
-
|
|
|
- /* irq */
|
|
|
- brd->irq = pdev->irq;
|
|
|
-
|
|
|
- brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
|
|
|
- brd->uart_type = PORT_16550A;
|
|
|
- brd->vector_mask = 0;
|
|
|
-
|
|
|
- for (i = 0; i < brd->info->nports; i++) {
|
|
|
- for (j = 0; j < UART_INFO_NUM; j++) {
|
|
|
- if (Gpci_uart_info[j].type == brd->chip_flag) {
|
|
|
- brd->ports[i].max_baud =
|
|
|
- Gpci_uart_info[j].max_baud;
|
|
|
-
|
|
|
- /* exception....CP-102 */
|
|
|
- if (brd->info->flags & MXSER_HIGHBAUD)
|
|
|
- brd->ports[i].max_baud = 921600;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
|
|
|
- for (i = 0; i < brd->info->nports; i++) {
|
|
|
- if (i < 4)
|
|
|
- brd->ports[i].opmode_ioaddr = ioaddress + 4;
|
|
|
- else
|
|
|
- brd->ports[i].opmode_ioaddr = ioaddress + 0x0c;
|
|
|
- }
|
|
|
- outb(0, ioaddress + 4); /* default set to RS232 mode */
|
|
|
- outb(0, ioaddress + 0x0c); /* default set to RS232 mode */
|
|
|
- }
|
|
|
-
|
|
|
- for (i = 0; i < brd->info->nports; i++) {
|
|
|
- brd->vector_mask |= (1 << i);
|
|
|
- brd->ports[i].baud_base = 921600;
|
|
|
- }
|
|
|
-
|
|
|
- /* mxser_initbrd will hook ISR. */
|
|
|
- retval = mxser_initbrd(brd, pdev);
|
|
|
- if (retval)
|
|
|
- goto err_null;
|
|
|
-
|
|
|
- for (i = 0; i < brd->info->nports; i++)
|
|
|
- tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev);
|
|
|
-
|
|
|
- pci_set_drvdata(pdev, brd);
|
|
|
-
|
|
|
- return 0;
|
|
|
-err_relio:
|
|
|
- pci_release_region(pdev, 2);
|
|
|
-err_null:
|
|
|
- brd->info = NULL;
|
|
|
-err:
|
|
|
- return retval;
|
|
|
-#else
|
|
|
- return -ENODEV;
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
-static void __devexit mxser_remove(struct pci_dev *pdev)
|
|
|
-{
|
|
|
- struct mxser_board *brd = pci_get_drvdata(pdev);
|
|
|
- unsigned int i;
|
|
|
-
|
|
|
- for (i = 0; i < brd->info->nports; i++)
|
|
|
- tty_unregister_device(mxvar_sdriver, brd->idx + i);
|
|
|
-
|
|
|
- mxser_release_res(brd, pdev, 1);
|
|
|
- brd->info = NULL;
|
|
|
-}
|
|
|
-
|
|
|
-static struct pci_driver mxser_driver = {
|
|
|
- .name = "mxser",
|
|
|
- .id_table = mxser_pcibrds,
|
|
|
- .probe = mxser_probe,
|
|
|
- .remove = __devexit_p(mxser_remove)
|
|
|
-};
|
|
|
-
|
|
|
-static int __init mxser_module_init(void)
|
|
|
-{
|
|
|
- struct mxser_board *brd;
|
|
|
- unsigned long cap;
|
|
|
- unsigned int i, m, isaloop;
|
|
|
- int retval, b;
|
|
|
-
|
|
|
- pr_debug("Loading module mxser ...\n");
|
|
|
-
|
|
|
- mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
|
|
|
- if (!mxvar_sdriver)
|
|
|
- return -ENOMEM;
|
|
|
-
|
|
|
- printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
|
|
|
- MXSER_VERSION);
|
|
|
-
|
|
|
- /* Initialize the tty_driver structure */
|
|
|
- mxvar_sdriver->owner = THIS_MODULE;
|
|
|
- mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
|
|
|
- mxvar_sdriver->name = "ttyMI";
|
|
|
- mxvar_sdriver->major = ttymajor;
|
|
|
- mxvar_sdriver->minor_start = 0;
|
|
|
- mxvar_sdriver->num = MXSER_PORTS + 1;
|
|
|
- mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
|
|
|
- mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
|
|
|
- mxvar_sdriver->init_termios = tty_std_termios;
|
|
|
- mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
|
|
|
- mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV;
|
|
|
- tty_set_operations(mxvar_sdriver, &mxser_ops);
|
|
|
-
|
|
|
- retval = tty_register_driver(mxvar_sdriver);
|
|
|
- if (retval) {
|
|
|
- printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family "
|
|
|
- "tty driver !\n");
|
|
|
- goto err_put;
|
|
|
- }
|
|
|
-
|
|
|
- mxvar_diagflag = 0;
|
|
|
-
|
|
|
- m = 0;
|
|
|
- /* Start finding ISA boards here */
|
|
|
- for (isaloop = 0; isaloop < 2; isaloop++)
|
|
|
- for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
|
|
|
- if (!isaloop)
|
|
|
- cap = mxserBoardCAP[b]; /* predefined */
|
|
|
- else
|
|
|
- cap = ioaddr[b]; /* module param */
|
|
|
-
|
|
|
- if (!cap)
|
|
|
- continue;
|
|
|
-
|
|
|
- brd = &mxser_boards[m];
|
|
|
- retval = mxser_get_ISA_conf(cap, brd);
|
|
|
-
|
|
|
- if (retval != 0)
|
|
|
- printk(KERN_INFO "Found MOXA %s board "
|
|
|
- "(CAP=0x%x)\n",
|
|
|
- brd->info->name, ioaddr[b]);
|
|
|
-
|
|
|
- if (retval <= 0) {
|
|
|
- if (retval == MXSER_ERR_IRQ)
|
|
|
- printk(KERN_ERR "Invalid interrupt "
|
|
|
- "number, board not "
|
|
|
- "configured\n");
|
|
|
- else if (retval == MXSER_ERR_IRQ_CONFLIT)
|
|
|
- printk(KERN_ERR "Invalid interrupt "
|
|
|
- "number, board not "
|
|
|
- "configured\n");
|
|
|
- else if (retval == MXSER_ERR_VECTOR)
|
|
|
- printk(KERN_ERR "Invalid interrupt "
|
|
|
- "vector, board not "
|
|
|
- "configured\n");
|
|
|
- else if (retval == MXSER_ERR_IOADDR)
|
|
|
- printk(KERN_ERR "Invalid I/O address, "
|
|
|
- "board not configured\n");
|
|
|
-
|
|
|
- brd->info = NULL;
|
|
|
- continue;
|
|
|
- }
|
|
|
-
|
|
|
- /* mxser_initbrd will hook ISR. */
|
|
|
- if (mxser_initbrd(brd, NULL) < 0) {
|
|
|
- brd->info = NULL;
|
|
|
- continue;
|
|
|
- }
|
|
|
-
|
|
|
- brd->idx = m * MXSER_PORTS_PER_BOARD;
|
|
|
- for (i = 0; i < brd->info->nports; i++)
|
|
|
- tty_register_device(mxvar_sdriver, brd->idx + i,
|
|
|
- NULL);
|
|
|
-
|
|
|
- m++;
|
|
|
- }
|
|
|
-
|
|
|
- retval = pci_register_driver(&mxser_driver);
|
|
|
- if (retval) {
|
|
|
- printk(KERN_ERR "Can't register pci driver\n");
|
|
|
- if (!m) {
|
|
|
- retval = -ENODEV;
|
|
|
- goto err_unr;
|
|
|
- } /* else: we have some ISA cards under control */
|
|
|
- }
|
|
|
-
|
|
|
- pr_debug("Done.\n");
|
|
|
-
|
|
|
- return 0;
|
|
|
-err_unr:
|
|
|
- tty_unregister_driver(mxvar_sdriver);
|
|
|
-err_put:
|
|
|
- put_tty_driver(mxvar_sdriver);
|
|
|
- return retval;
|
|
|
-}
|
|
|
-
|
|
|
-static void __exit mxser_module_exit(void)
|
|
|
-{
|
|
|
- unsigned int i, j;
|
|
|
-
|
|
|
- pr_debug("Unloading module mxser ...\n");
|
|
|
-
|
|
|
- pci_unregister_driver(&mxser_driver);
|
|
|
-
|
|
|
- for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */
|
|
|
- if (mxser_boards[i].info != NULL)
|
|
|
- for (j = 0; j < mxser_boards[i].info->nports; j++)
|
|
|
- tty_unregister_device(mxvar_sdriver,
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- mxser_boards[i].idx + j);
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- tty_unregister_driver(mxvar_sdriver);
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- put_tty_driver(mxvar_sdriver);
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-
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- for (i = 0; i < MXSER_BOARDS; i++)
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|
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- if (mxser_boards[i].info != NULL)
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|
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- mxser_release_res(&mxser_boards[i], NULL, 1);
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|
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-
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|
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- pr_debug("Done.\n");
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|
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-}
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|
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-
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|
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-module_init(mxser_module_init);
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|
|
-module_exit(mxser_module_exit);
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Jiri Slaby