X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fchar%2Fmxser_new.c;h=9af07e4999d5f0cac406a3f2200adad82b27dcca;hb=58a3bb59973e33a428d72fa530a3d1d81feb0e8f;hp=7e53c73978327e613e7053c7df720cd3e0cb2649;hpb=55b307da3e00b2281788860eefb42976a86d7752;p=pandora-kernel.git diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c index 7e53c7397832..9af07e4999d5 100644 --- a/drivers/char/mxser_new.c +++ b/drivers/char/mxser_new.c @@ -2,31 +2,23 @@ * mxser.c -- MOXA Smartio/Industio family multiport serial driver. * * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com.tw). + * Copyright (C) 2006 Jiri Slaby * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. + * This code is loosely based on the 1.8 moxa driver which is based on + * Linux serial driver, written by Linus Torvalds, Theodore T'so and + * others. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox * . The original 1.8 code is available on www.moxa.com. * - Fixed x86_64 cleanness * - Fixed sleep with spinlock held in mxser_send_break */ - #include #include #include @@ -57,25 +49,24 @@ #include "mxser_new.h" -#define MXSER_VERSION "2.0" +#define MXSER_VERSION "2.0.1" /* 1.9.15 */ #define MXSERMAJOR 174 #define MXSERCUMAJOR 175 -#define MXSER_EVENT_TXLOW 1 -#define MXSER_EVENT_HANGUP 2 - #define MXSER_BOARDS 4 /* Max. boards */ -#define MXSER_PORTS 32 /* Max. ports */ #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ -#define MXSER_ISR_PASS_LIMIT 99999L +#define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD) +#define MXSER_ISR_PASS_LIMIT 100 #define MXSER_ERR_IOADDR -1 #define MXSER_ERR_IRQ -2 #define MXSER_ERR_IRQ_CONFLIT -3 #define MXSER_ERR_VECTOR -4 -#define SERIAL_TYPE_NORMAL 1 -#define SERIAL_TYPE_CALLOUT 2 +/*CheckIsMoxaMust return value*/ +#define MOXA_OTHER_UART 0x00 +#define MOXA_MUST_MU150_HWID 0x01 +#define MOXA_MUST_MU860_HWID 0x02 #define WAKEUP_CHARS 256 @@ -92,97 +83,11 @@ #define CI134_ASIC_ID 3 #define CI104J_ASIC_ID 5 -enum { - MXSER_BOARD_C168_ISA = 1, - MXSER_BOARD_C104_ISA, - MXSER_BOARD_CI104J, - MXSER_BOARD_C168_PCI, - MXSER_BOARD_C104_PCI, - MXSER_BOARD_C102_ISA, - MXSER_BOARD_CI132, - MXSER_BOARD_CI134, - MXSER_BOARD_CP132, - MXSER_BOARD_CP114, - MXSER_BOARD_CT114, - MXSER_BOARD_CP102, - MXSER_BOARD_CP104U, - MXSER_BOARD_CP168U, - MXSER_BOARD_CP132U, - MXSER_BOARD_CP134U, - MXSER_BOARD_CP104JU, - MXSER_BOARD_RC7000, - MXSER_BOARD_CP118U, - MXSER_BOARD_CP102UL, - MXSER_BOARD_CP102U, - MXSER_BOARD_CP118EL, - MXSER_BOARD_CP168EL, - MXSER_BOARD_CP104EL -}; - -static char *mxser_brdname[] = { - "C168 series", - "C104 series", - "CI-104J series", - "C168H/PCI series", - "C104H/PCI series", - "C102 series", - "CI-132 series", - "CI-134 series", - "CP-132 series", - "CP-114 series", - "CT-114 series", - "CP-102 series", - "CP-104U series", - "CP-168U series", - "CP-132U series", - "CP-134U series", - "CP-104JU series", - "Moxa UC7000 Serial", - "CP-118U series", - "CP-102UL series", - "CP-102U series", - "CP-118EL series", - "CP-168EL series", - "CP-104EL series" -}; - -static int mxser_numports[] = { - 8, /* C168-ISA */ - 4, /* C104-ISA */ - 4, /* CI104J */ - 8, /* C168-PCI */ - 4, /* C104-PCI */ - 2, /* C102-ISA */ - 2, /* CI132 */ - 4, /* CI134 */ - 2, /* CP132 */ - 4, /* CP114 */ - 4, /* CT114 */ - 2, /* CP102 */ - 4, /* CP104U */ - 8, /* CP168U */ - 2, /* CP132U */ - 4, /* CP134U */ - 4, /* CP104JU */ - 8, /* RC7000 */ - 8, /* CP118U */ - 2, /* CP102UL */ - 2, /* CP102U */ - 8, /* CP118EL */ - 8, /* CP168EL */ - 4 /* CP104EL */ -}; - -#define UART_TYPE_NUM 2 - -static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = { - MOXA_MUST_MU150_HWID, - MOXA_MUST_MU860_HWID -}; +#define MXSER_HIGHBAUD 1 +#define MXSER_HAS2 2 /* This is only for PCI */ -#define UART_INFO_NUM 3 -struct mxpciuart_info { +static const struct { int type; int tx_fifo; int rx_fifo; @@ -191,60 +96,104 @@ struct mxpciuart_info { int rx_trigger; int rx_low_water; long max_baud; -}; - -static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = { +} Gpci_uart_info[] = { {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} }; +#define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info) + +struct mxser_cardinfo { + unsigned int nports; + char *name; + unsigned int flags; +}; +static const struct mxser_cardinfo mxser_cards[] = { + { 8, "C168 series", }, /* C168-ISA */ + { 4, "C104 series", }, /* C104-ISA */ + { 4, "CI-104J series", }, /* CI104J */ + { 8, "C168H/PCI series", }, /* C168-PCI */ + { 4, "C104H/PCI series", }, /* C104-PCI */ + { 4, "C102 series", MXSER_HAS2 }, /* C102-ISA */ + { 4, "CI-132 series", MXSER_HAS2 }, /* CI132 */ + { 4, "CI-134 series", }, /* CI134 */ + { 2, "CP-132 series", }, /* CP132 */ + { 4, "CP-114 series", }, /* CP114 */ + { 4, "CT-114 series", }, /* CT114 */ + { 2, "CP-102 series", MXSER_HIGHBAUD }, /* CP102 */ + { 4, "CP-104U series", }, /* CP104U */ + { 8, "CP-168U series", }, /* CP168U */ + { 2, "CP-132U series", }, /* CP132U */ + { 4, "CP-134U series", }, /* CP134U */ + { 4, "CP-104JU series", }, /* CP104JU */ + { 8, "Moxa UC7000 Serial", }, /* RC7000 */ + { 8, "CP-118U series", }, /* CP118U */ + { 2, "CP-102UL series", }, /* CP102UL */ + { 2, "CP-102U series", }, /* CP102U */ + { 8, "CP-118EL series", }, /* CP118EL */ + { 8, "CP-168EL series", }, /* CP168EL */ + { 4, "CP-104EL series", } /* CP104EL */ +}; +/* driver_data correspond to the lines in the structure above + see also ISA probe function before you change something */ static struct pci_device_id mxser_pcibrds[] = { { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168), - .driver_data = MXSER_BOARD_C168_PCI }, + .driver_data = 3 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104), - .driver_data = MXSER_BOARD_C104_PCI }, + .driver_data = 4 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132), - .driver_data = MXSER_BOARD_CP132 }, + .driver_data = 8 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114), - .driver_data = MXSER_BOARD_CP114 }, + .driver_data = 9 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114), - .driver_data = MXSER_BOARD_CT114 }, + .driver_data = 10 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102), - .driver_data = MXSER_BOARD_CP102 }, + .driver_data = 11 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U), - .driver_data = MXSER_BOARD_CP104U }, + .driver_data = 12 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U), - .driver_data = MXSER_BOARD_CP168U }, + .driver_data = 13 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U), - .driver_data = MXSER_BOARD_CP132U }, + .driver_data = 14 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U), - .driver_data = MXSER_BOARD_CP134U }, + .driver_data = 15 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU), - .driver_data = MXSER_BOARD_CP104JU }, + .driver_data = 16 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000), - .driver_data = MXSER_BOARD_RC7000 }, + .driver_data = 17 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U), - .driver_data = MXSER_BOARD_CP118U }, + .driver_data = 18 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL), - .driver_data = MXSER_BOARD_CP102UL }, + .driver_data = 19 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U), - .driver_data = MXSER_BOARD_CP102U }, + .driver_data = 20 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118EL), - .driver_data = MXSER_BOARD_CP118EL }, + .driver_data = 21 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168EL), - .driver_data = MXSER_BOARD_CP168EL }, + .driver_data = 22 }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104EL), - .driver_data = MXSER_BOARD_CP104EL }, + .driver_data = 23 }, { } }; MODULE_DEVICE_TABLE(pci, mxser_pcibrds); +static int mxvar_baud_table[] = { + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, + 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 +}; +static unsigned int mxvar_baud_table1[] = { + 0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400, + B4800, B9600, B19200, B38400, B57600, B115200, B230400, B460800, B921600 +}; +#define BAUD_TABLE_NO ARRAY_SIZE(mxvar_baud_table) + +#define B_SPEC B2000000 + static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 }; static int ttymajor = MXSERMAJOR; static int calloutmajor = MXSERCUMAJOR; -static int verbose = 0; /* Variables for insmod */ @@ -252,7 +201,6 @@ MODULE_AUTHOR("Casper Yang"); MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); module_param_array(ioaddr, int, NULL, 0); module_param(ttymajor, int, 0); -module_param(verbose, bool, 0); MODULE_LICENSE("GPL"); struct mxser_log { @@ -304,8 +252,7 @@ struct mxser_port { long realbaud; int type; /* UART type */ int flags; /* defined in tty.h */ - long session; /* Session of opening process */ - long pgrp; /* pgrp of opening process */ + int speed; int x_char; /* xon/xoff character */ int IER; /* Interrupt Enable Register */ @@ -333,24 +280,19 @@ struct mxser_port { int xmit_tail; int xmit_cnt; - struct termios normal_termios; - struct termios callout_termios; + struct ktermios normal_termios; struct mxser_mon mon_data; spinlock_t slock; - struct work_struct tqueue; wait_queue_head_t open_wait; - wait_queue_head_t close_wait; wait_queue_head_t delta_msr_wait; }; struct mxser_board { - struct pci_dev *pdev; /* temporary (until pci probing) */ - + unsigned int idx; int irq; - int board_type; - unsigned int nports; + const struct mxser_cardinfo *info; unsigned long vector; unsigned long vector_mask; @@ -377,68 +319,14 @@ static int mxserBoardCAP[MXSER_BOARDS] = { static struct mxser_board mxser_boards[MXSER_BOARDS]; static struct tty_driver *mxvar_sdriver; -static struct tty_struct *mxvar_tty[MXSER_PORTS + 1]; -static struct termios *mxvar_termios[MXSER_PORTS + 1]; -static struct termios *mxvar_termios_locked[MXSER_PORTS + 1]; static struct mxser_log mxvar_log; static int mxvar_diagflag; static unsigned char mxser_msr[MXSER_PORTS + 1]; static struct mxser_mon_ext mon_data_ext; static int mxser_set_baud_method[MXSER_PORTS + 1]; -static spinlock_t gm_lock; - -/* - * static functions: - */ -static int mxser_init(void); - -/* static void mxser_poll(unsigned long); */ -static int mxser_get_ISA_conf(int, struct mxser_board *); -static void mxser_do_softint(void *); -static int mxser_open(struct tty_struct *, struct file *); -static void mxser_close(struct tty_struct *, struct file *); -static int mxser_write(struct tty_struct *, const unsigned char *, int); -static int mxser_write_room(struct tty_struct *); -static void mxser_flush_buffer(struct tty_struct *); -static int mxser_chars_in_buffer(struct tty_struct *); -static void mxser_flush_chars(struct tty_struct *); -static void mxser_put_char(struct tty_struct *, unsigned char); -static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong); -static int mxser_ioctl_special(unsigned int, void __user *); -static void mxser_throttle(struct tty_struct *); -static void mxser_unthrottle(struct tty_struct *); -static void mxser_set_termios(struct tty_struct *, struct termios *); -static void mxser_stop(struct tty_struct *); -static void mxser_start(struct tty_struct *); -static void mxser_hangup(struct tty_struct *); -static void mxser_rs_break(struct tty_struct *, int); -static irqreturn_t mxser_interrupt(int, void *, struct pt_regs *); -static void mxser_receive_chars(struct mxser_port *, int *); -static void mxser_transmit_chars(struct mxser_port *); -static void mxser_check_modem_status(struct mxser_port *, int); -static int mxser_block_til_ready(struct tty_struct *, struct file *, - struct mxser_port *); -static int mxser_startup(struct mxser_port *); -static void mxser_shutdown(struct mxser_port *); -static int mxser_change_speed(struct mxser_port *, struct termios *); -static int mxser_get_serial_info(struct mxser_port *, - struct serial_struct __user *); -static int mxser_set_serial_info(struct mxser_port *, - struct serial_struct __user *); -static int mxser_get_lsr_info(struct mxser_port *, unsigned int __user *); -static void mxser_send_break(struct mxser_port *, int); -static int mxser_tiocmget(struct tty_struct *, struct file *); -static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, - unsigned int); -static int mxser_set_baud(struct mxser_port *, long); -static void mxser_wait_until_sent(struct tty_struct *, int); - -static void mxser_startrx(struct tty_struct *); -static void mxser_stoprx(struct tty_struct *); - - -static int CheckIsMoxaMust(int io) +#ifdef CONFIG_PCI +static int __devinit CheckIsMoxaMust(int io) { u8 oldmcr, hwid; int i; @@ -454,90 +342,13 @@ static int CheckIsMoxaMust(int io) } GET_MOXA_MUST_HARDWARE_ID(io, &hwid); - for (i = 0; i < UART_TYPE_NUM; i++) { - if (hwid == Gmoxa_uart_id[i]) + for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */ + if (hwid == Gpci_uart_info[i].type) return (int)hwid; } return MOXA_OTHER_UART; } - -/* above is modified by Victor Yu. 08-15-2002 */ - -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 int __init mxser_module_init(void) -{ - int ret; - - if (verbose) - printk(KERN_DEBUG "Loading module mxser ...\n"); - printk(KERN_INFO "This is mxser driver version 1.9.1 and needs TESTING." - "If your are willing to test this driver, please report to " - "jirislaby@gmail.com. Thanks.\n"); - ret = mxser_init(); - if (verbose) - printk(KERN_DEBUG "Done.\n"); - return ret; -} - -static void __exit mxser_module_exit(void) -{ - int i, err; - - if (verbose) - printk(KERN_DEBUG "Unloading module mxser ...\n"); - - err = tty_unregister_driver(mxvar_sdriver); - if (!err) - put_tty_driver(mxvar_sdriver); - else - printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n"); - - for (i = 0; i < MXSER_BOARDS; i++) { - struct pci_dev *pdev; - - if (mxser_boards[i].board_type == -1) - continue; - else { - pdev = mxser_boards[i].pdev; - free_irq(mxser_boards[i].irq, &mxser_boards[i]); - if (pdev != NULL) { /* PCI */ - release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); - release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3)); - pci_dev_put(pdev); - } else { - release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports); - release_region(mxser_boards[i].vector, 1); - } - } - } - if (verbose) - printk(KERN_DEBUG "Done.\n"); -} +#endif static void process_txrx_fifo(struct mxser_port *info) { @@ -559,352 +370,550 @@ static void process_txrx_fifo(struct mxser_port *info) } } -static int mxser_initbrd(struct mxser_board *brd) +static unsigned char mxser_get_msr(int baseaddr, int mode, int port) { - struct mxser_port *info; - unsigned int i; - int retval; + unsigned char status = 0; - /*if (verbose) */ { - printk(" max. baud rate = %d bps.\n", - brd->ports[0].max_baud); - } + status = inb(baseaddr + UART_MSR); - for (i = 0; i < brd->nports; i++) { - info = &brd->ports[i]; - info->board = brd; - info->stop_rx = 0; - info->ldisc_stop_rx = 0; + mxser_msr[port] &= 0x0F; + mxser_msr[port] |= status; + status = mxser_msr[port]; + if (mode) + mxser_msr[port] = 0; - /* Enhance mode enabled here */ - if (brd->chip_flag != MOXA_OTHER_UART) - ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr); + return status; +} - info->flags = ASYNC_SHARE_IRQ; - info->type = brd->uart_type; +static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, + struct mxser_port *port) +{ + DECLARE_WAITQUEUE(wait, current); + int retval; + int do_clocal = 0; + unsigned long flags; - process_txrx_fifo(info); + /* + * 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; + } - info->custom_divisor = info->baud_base * 16; - info->close_delay = 5 * HZ / 10; - info->closing_wait = 30 * HZ; - INIT_WORK(&info->tqueue, mxser_do_softint, info); - info->normal_termios = mxvar_sdriver->init_termios; - init_waitqueue_head(&info->open_wait); - init_waitqueue_head(&info->close_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); + if (tty->termios->c_cflag & CLOCAL) + do_clocal = 1; - /* before set INT ISR, disable all int */ - outb(inb(info->ioaddr + UART_IER) & 0xf0, - info->ioaddr + UART_IER); - } /* - * Allocate the IRQ if necessary + * 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); - retval = request_irq(brd->irq, mxser_interrupt, - (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : - IRQF_DISABLED, "mxser", brd); - if (retval) { - printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " - "conflict with another device.\n", - mxser_brdname[brd->board_type - 1], brd->irq); - return retval; + 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_get_PCI_conf(int board_type, struct mxser_board *brd, - struct pci_dev *pdev) +static int mxser_set_baud(struct mxser_port *info, long newspd) { - unsigned int i, j; - unsigned long ioaddress; - - /* io address */ - brd->board_type = board_type; - brd->nports = mxser_numports[board_type - 1]; - ioaddress = pci_resource_start(pdev, 2); - request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2), - "mxser(IO)"); - - for (i = 0; i < brd->nports; i++) - brd->ports[i].ioaddr = ioaddress + 8 * i; - - /* vector */ - ioaddress = pci_resource_start(pdev, 3); - request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3), - "mxser(vector)"); - brd->vector = ioaddress; + unsigned int i; + int quot = 0; + unsigned char cval; + int ret = 0; - /* irq */ - brd->irq = pdev->irq; + if (!info->tty || !info->tty->termios) + return ret; - brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); - brd->uart_type = PORT_16550A; - brd->vector_mask = 0; + if (!(info->ioaddr)) + return ret; - for (i = 0; i < brd->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; + if (newspd > info->max_baud) + return 0; - /* exception....CP-102 */ - if (board_type == MXSER_BOARD_CP102) - brd->ports[i].max_baud = 921600; - break; - } + info->realbaud = newspd; + for (i = 0; i < BAUD_TABLE_NO; i++) + if (newspd == mxvar_baud_table[i]) + break; + if (i == BAUD_TABLE_NO) { + quot = info->baud_base / info->speed; + if (info->speed <= 0 || info->speed > info->max_baud) + quot = 0; + } else { + if (newspd == 134) { + quot = (2 * info->baud_base / 269); + } else if (newspd) { + quot = info->baud_base / newspd; + if (quot == 0) + quot = 1; + } else { + quot = 0; } } - if (brd->chip_flag == MOXA_MUST_MU860_HWID) { - for (i = 0; i < brd->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 */ - } + info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); + info->timeout += HZ / 50; /* Add .02 seconds of slop */ - for (i = 0; i < brd->nports; i++) { - brd->vector_mask |= (1 << i); - brd->ports[i].baud_base = 921600; + 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 ret; } - return 0; -} -static int mxser_init(void) -{ - struct pci_dev *pdev = NULL; - struct mxser_board *brd; - unsigned int i, m; - int retval, b, n; + cval = inb(info->ioaddr + UART_LCR); - mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); - if (!mxvar_sdriver) - return -ENOMEM; - spin_lock_init(&gm_lock); + outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */ - for (i = 0; i < MXSER_BOARDS; i++) - mxser_boards[i].board_type = -1; + 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 */ - printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", - MXSER_VERSION); + if (i == BAUD_TABLE_NO) { + quot = info->baud_base % info->speed; + quot *= 8; + if ((quot % info->speed) > (info->speed / 2)) { + quot /= info->speed; + quot++; + } else { + quot /= info->speed; + } + SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot); + } else + SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0); - /* Initialize the tty_driver structure */ - memset(mxvar_sdriver, 0, sizeof(struct tty_driver)); - mxvar_sdriver->magic = TTY_DRIVER_MAGIC; - mxvar_sdriver->name = "ttyM"; - 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_set_operations(mxvar_sdriver, &mxser_ops); - mxvar_sdriver->ttys = mxvar_tty; - mxvar_sdriver->termios = mxvar_termios; - mxvar_sdriver->termios_locked = mxvar_termios_locked; - - mxvar_diagflag = 0; - memset(mxser_boards, 0, sizeof(mxser_boards)); - memset(&mxvar_log, 0, sizeof(struct mxser_log)); - - memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1)); - memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext)); - memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1)); - - m = 0; - /* Start finding ISA boards here */ - for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { - int cap; - - if (!(cap = mxserBoardCAP[b])) - 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", - mxser_brdname[brd->board_type - 1], 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"); - - continue; - } + return ret; +} - brd->pdev = NULL; +/* + * 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; + long baud; - /* mxser_initbrd will hook ISR. */ - if (mxser_initbrd(brd) < 0) - continue; + if (!info->tty || !info->tty->termios) + return ret; + cflag = info->tty->termios->c_cflag; + if (!(info->ioaddr)) + return ret; - m++; + if (mxser_set_baud_method[info->tty->index] == 0) { + if ((cflag & CBAUD) == B_SPEC) + baud = info->speed; + else + baud = tty_get_baud_rate(info->tty); + mxser_set_baud(info, baud); } - /* Start finding ISA boards from module arg */ - for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { - unsigned long cap; + /* 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 (!(cap = ioaddr[b])) - continue; + 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; + } + } + } - brd = &mxser_boards[m]; - retval = mxser_get_ISA_conf(cap, &mxser_boards[m]); + /* 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); - if (retval != 0) - printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", - mxser_brdname[brd->board_type - 1], ioaddr[b]); + /* + * 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; - 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"); + info->ignore_status_mask = 0; - continue; + 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; } - - brd->pdev = NULL; - /* mxser_initbrd will hook ISR. */ - if (mxser_initbrd(brd) < 0) - continue; - - m++; } - - /* start finding PCI board here */ - n = ARRAY_SIZE(mxser_pcibrds) - 1; - b = 0; - while (b < n) { - pdev = pci_get_device(mxser_pcibrds[b].vendor, - mxser_pcibrds[b].device, pdev); - if (pdev == NULL) { - b++; - continue; + 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); } - printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n", - mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1], - pdev->bus->number, PCI_SLOT(pdev->devfn)); - if (m >= MXSER_BOARDS) - printk(KERN_ERR - "Too many Smartio/Industio family boards find " - "(maximum %d), board not configured\n", - MXSER_BOARDS); - else { - if (pci_enable_device(pdev)) { - printk(KERN_ERR "Moxa SmartI/O PCI enable " - "fail !\n"); - continue; - } - brd = &mxser_boards[m]; - brd->pdev = pdev; - retval = mxser_get_PCI_conf( - (int)mxser_pcibrds[b].driver_data, - brd, pdev); - 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"); - continue; - } - /* mxser_initbrd will hook ISR. */ - if (mxser_initbrd(brd) < 0) - continue; - m++; - /* Keep an extra reference if we succeeded. It will - be returned at unload time */ - pci_dev_get(pdev); + if (I_IXOFF(info->tty)) { + ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + } else { + DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); } } - retval = tty_register_driver(mxvar_sdriver); - if (retval) { - printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family" - " driver !\n"); - put_tty_driver(mxvar_sdriver); - for (i = 0; i < MXSER_BOARDS; i++) { - if (mxser_boards[i].board_type == -1) - continue; - else { - free_irq(mxser_boards[i].irq, &mxser_boards[i]); - /* todo: release io, vector */ - } - } - return retval; - } + outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ + outb(cval, info->ioaddr + UART_LCR); - return 0; + return ret; } -static void mxser_do_softint(void *private_) +static void mxser_check_modem_status(struct mxser_port *port, int status) { - struct mxser_port *info = private_; - struct tty_struct *tty; + /* 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); + } - tty = info->tty; + if (port->flags & ASYNC_CTS_FLOW) { + if (port->tty->hw_stopped) { + if (status & UART_MSR_CTS) { + port->tty->hw_stopped = 0; - if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) - tty_wakeup(tty); - if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) - tty_hangup(tty); + 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 unsigned char mxser_get_msr(int baseaddr, int mode, int port) +static int mxser_startup(struct mxser_port *info) { - unsigned char status = 0; + unsigned long page; + unsigned long flags; - status = inb(baseaddr + UART_MSR); + page = __get_free_page(GFP_KERNEL); + if (!page) + return -ENOMEM; - mxser_msr[port] &= 0x0F; - mxser_msr[port] |= status; - status = mxser_msr[port]; - if (mode) - mxser_msr[port] = 0; + spin_lock_irqsave(&info->slock, flags); - return status; + 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); } /* @@ -916,11 +925,9 @@ static unsigned char mxser_get_msr(int baseaddr, int mode, int port) static int mxser_open(struct tty_struct *tty, struct file *filp) { struct mxser_port *info; + unsigned long flags; int retval, line; - /* initialize driver_data in case something fails */ - tty->driver_data = NULL; - line = tty->index; if (line == MXSER_PORTS) return 0; @@ -935,7 +942,9 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) /* * 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; @@ -944,23 +953,7 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) if (retval) return retval; - if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { - if (tty->driver->subtype == SERIAL_TYPE_NORMAL) - *tty->termios = info->normal_termios; - else - *tty->termios = info->callout_termios; - mxser_change_speed(info, NULL); - } - - info->session = process_session(current); - info->pgrp = process_group(current); - - /* - status = mxser_get_msr(info->base, 0, info->port); - mxser_check_modem_status(info, status); - */ - -/* unmark here for very high baud rate (ex. 921600 bps) used */ + /* unmark here for very high baud rate (ex. 921600 bps) used */ tty->low_latency = 1; return 0; } @@ -977,7 +970,6 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) unsigned long timeout; unsigned long flags; - struct tty_ldisc *ld; if (tty->index == MXSER_PORTS) return; @@ -1035,9 +1027,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) info->IER &= ~UART_IER_RLSI; if (info->board->chip_flag) info->IER &= ~MOXA_MUST_RECV_ISR; -/* by William - info->read_status_mask &= ~UART_LSR_DR; -*/ + if (info->flags & ASYNC_INITIALIZED) { outb(info->IER, info->ioaddr + UART_IER); /* @@ -1057,12 +1047,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) if (tty->driver->flush_buffer) tty->driver->flush_buffer(tty); - ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->flush_buffer) - ld->flush_buffer(tty); - tty_ldisc_deref(ld); - } + tty_ldisc_flush(tty); tty->closing = 0; info->event = 0; @@ -1074,8 +1059,6 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) } info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); - wake_up_interruptible(&info->close_wait); - } static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) @@ -1105,8 +1088,7 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou total += c; } - if (info->xmit_cnt && !tty->stopped - /*&& !(info->IER & UART_IER_THRI)*/) { + if (info->xmit_cnt && !tty->stopped) { if (!tty->hw_stopped || (info->type == PORT_16550A) || (info->board->chip_flag)) { @@ -1137,7 +1119,7 @@ static void mxser_put_char(struct tty_struct *tty, unsigned char ch) info->xmit_head &= SERIAL_XMIT_SIZE - 1; info->xmit_cnt++; spin_unlock_irqrestore(&info->slock, flags); - if (!tty->stopped /*&& !(info->IER & UART_IER_THRI)*/) { + if (!tty->stopped) { if (!tty->hw_stopped || (info->type == PORT_16550A) || info->board->chip_flag) { @@ -1188,12 +1170,7 @@ static int mxser_write_room(struct tty_struct *tty) static int mxser_chars_in_buffer(struct tty_struct *tty) { struct mxser_port *info = tty->driver_data; - int len = info->xmit_cnt; - - if (!(inb(info->ioaddr + UART_LSR) & UART_LSR_THRE)) - len++; - - return len; + return info->xmit_cnt; } static void mxser_flush_buffer(struct tty_struct *tty) @@ -1206,292 +1183,328 @@ static void mxser_flush_buffer(struct tty_struct *tty) spin_lock_irqsave(&info->slock, flags); info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - /* below added by shinhay */ 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); - /* above added by shinhay */ - wake_up_interruptible(&tty->write_wait); - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) - (tty->ldisc.write_wakeup) (tty); + tty_wakeup(tty); } -static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) +/* + * ------------------------------------------------------------ + * friends of mxser_ioctl() + * ------------------------------------------------------------ + */ +static int mxser_get_serial_info(struct mxser_port *info, + struct serial_struct __user *retinfo) { - struct mxser_port *info = tty->driver_data; - int retval; - struct async_icount cprev, cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; - unsigned long templ; - unsigned long flags; - void __user *argp = (void __user *)arg; + struct serial_struct tmp; - if (tty->index == MXSER_PORTS) - return mxser_ioctl_special(cmd, argp); + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof(tmp)); + tmp.type = info->type; + tmp.line = info->tty->index; + tmp.port = info->ioaddr; + tmp.irq = info->board->irq; + tmp.flags = info->flags; + tmp.baud_base = info->baud_base; + tmp.close_delay = info->close_delay; + tmp.closing_wait = info->closing_wait; + tmp.custom_divisor = info->custom_divisor; + tmp.hub6 = 0; + if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) + return -EFAULT; + return 0; +} - /* following add by Victor Yu. 01-05-2004 */ - 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; +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; - 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 (copy_to_user(argp, &opmode, sizeof(int))) - return -EFAULT; - } - return 0; - } - /* above add by Victor Yu. 01-05-2004 */ + if (!new_info || !info->ioaddr) + return -EFAULT; + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; - if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - 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) ? 1 : 0, (unsigned long __user *)argp); - case TIOCSSOFTCAR: - if (get_user(templ, (unsigned long __user *) argp)) - return -EFAULT; - arg = templ; - 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: { - DECLARE_WAITQUEUE(wait, current); - int ret; - spin_lock_irqsave(&info->slock, flags); - cprev = info->icount; /* note the counters on entry */ - spin_unlock_irqrestore(&info->slock, flags); + 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; - add_wait_queue(&info->delta_msr_wait, &wait); - while (1) { - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; /* atomic copy */ - spin_unlock_irqrestore(&info->slock, flags); - - set_current_state(TASK_INTERRUPTIBLE); - if (((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))) { - ret = 0; - break; - } - /* see if a signal did it */ - if (signal_pending(current)) { - ret = -ERESTARTSYS; - break; - } - cprev = cnow; - } - current->state = TASK_RUNNING; - remove_wait_queue(&info->delta_msr_wait, &wait); - break; - } - /* NOTREACHED */ + 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 { /* - * 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. + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... */ - case TIOCGICOUNT: - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->slock, flags); - p_cuser = argp; - /* modified by casper 1/11/2000 */ - 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; - } -/* (above) added by James. */ - case MOXA_ASPP_SETBAUD:{ - long baud; - if (get_user(baud, (long __user *)argp)) - return -EFAULT; - mxser_set_baud(info, baud); - return 0; - } - case MOXA_ASPP_GETBAUD: - if (copy_to_user(argp, &info->realbaud, sizeof(long))) - return -EFAULT; + 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; + } - return 0; + info->type = new_serial.type; - case MOXA_ASPP_OQUEUE:{ - int len, lsr; + process_txrx_fifo(info); - len = mxser_chars_in_buffer(tty); + 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); - lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; + return retval; +} - len += (lsr ? 0 : 1); +/* + * 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; - if (copy_to_user(argp, &len, sizeof(int))) - return -EFAULT; + 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); +} - return 0; - } - case MOXA_ASPP_MON: { - int mcr, status; +/* + * This routine sends a break character out the serial port. + */ +static void mxser_send_break(struct mxser_port *info, int duration) +{ + unsigned long flags; - /* info->mon_data.ser_param = tty->termios->c_cflag; */ + 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); +} - status = mxser_get_msr(info->ioaddr, 1, tty->index); - mxser_check_modem_status(info, status); +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; - 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 (tty->index == MXSER_PORTS) + return -ENOIOCTLCMD; + if (test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; - if (info->tty->hw_stopped) - info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; - else - info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; + control = info->MCR; - if (copy_to_user(argp, &info->mon_data, - sizeof(struct mxser_mon))) - return -EFAULT; + 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); +} - return 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; - case MOXA_ASPP_LSTATUS: { - if (copy_to_user(argp, &info->err_shadow, - sizeof(unsigned char))) - return -EFAULT; - info->err_shadow = 0; - return 0; - } - case MOXA_SET_BAUD_METHOD: { - int method; + if (tty->index == MXSER_PORTS) + return -ENOIOCTLCMD; + if (test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; - if (get_user(method, (int __user *)argp)) - return -EFAULT; - mxser_set_baud_method[tty->index] = method; - if (copy_to_user(argp, &method, sizeof(int))) - return -EFAULT; + spin_lock_irqsave(&info->slock, flags); - return 0; - } - default: - return -ENOIOCTLCMD; - } + 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; } -#ifndef CMSPAR -#define CMSPAR 010000000000 -#endif - -static int mxser_ioctl_special(unsigned int cmd, void __user *argp) +static int __init mxser_program_mode(int port) { - struct mxser_port *port; - int result, status; - unsigned int i, j; + int id, i, j, n; - switch (cmd) { - case MOXA_GET_CONF: -/* if (copy_to_user(argp, mxsercfg, - sizeof(struct mxser_hwconf) * 4)) - return -EFAULT; - return 0;*/ - return -ENXIO; - case MOXA_GET_MAJOR: - if (copy_to_user(argp, &ttymajor, sizeof(int))) - return -EFAULT; - return 0; + outb(0, port); + outb(0, port); + outb(0, port); + (void)inb(port); + (void)inb(port); + outb(0, port); + (void)inb(port); - case MOXA_GET_CUMAJOR: - if (copy_to_user(argp, &calloutmajor, sizeof(int))) - return -EFAULT; - return 0; + 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_CONF: +/* if (copy_to_user(argp, mxsercfg, + sizeof(struct mxser_hwconf) * 4)) + return -EFAULT; + return 0;*/ + return -ENXIO; + case MOXA_GET_MAJOR: + if (copy_to_user(argp, &ttymajor, sizeof(int))) + return -EFAULT; + return 0; + + case MOXA_GET_CUMAJOR: + if (copy_to_user(argp, &calloutmajor, sizeof(int))) + return -EFAULT; + return 0; case MOXA_CHKPORTENABLE: result = 0; @@ -1559,7 +1572,6 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) continue; status = mxser_get_msr(port->ioaddr, 0, i); -/* mxser_check_modem_status(port, status); */ if (status & UART_MSR_TERI) port->icount.rng++; @@ -1629,113 +1641,335 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) return 0; } -static void mxser_stoprx(struct tty_struct *tty) +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 cprev, cnow; /* kernel counter temps */ + struct serial_icounter_struct __user *p_cuser; + unsigned long templ; + unsigned long flags; + unsigned int i; + void __user *argp = (void __user *)arg; + int retval; - info->ldisc_stop_rx = 1; - if (I_IXOFF(tty)) { - /* following add by Victor Yu. 09-02-2002 */ - if (info->board->chip_flag) { - info->IER &= ~MOXA_MUST_RECV_ISR; - outb(info->IER, info->ioaddr + UART_IER); - } else if (!(info->flags & ASYNC_CLOSING)) { - 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); - } -} + if (tty->index == MXSER_PORTS) + return mxser_ioctl_special(cmd, argp); -static void mxser_startrx(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; + 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; - info->ldisc_stop_rx = 0; - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else { - /* following add by Victor Yu. 09-02-2002 */ - if (info->board->chip_flag) { - info->IER |= MOXA_MUST_RECV_ISR; - outb(info->IER, info->ioaddr + UART_IER); - } else if (!(info->flags & ASYNC_CLOSING)) { - info->x_char = START_CHAR(tty); - outb(0, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - } + 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 (copy_to_user(argp, &opmode, sizeof(int))) + return -EFAULT; } + return 0; } - 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) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - mxser_stoprx(tty); - spin_unlock_irqrestore(&info->slock, flags); -} - -static void mxser_unthrottle(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - mxser_startrx(tty); - spin_unlock_irqrestore(&info->slock, flags); -} - -static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; + if (cmd == MOXA_SET_SPECIAL_BAUD_RATE) { + int speed; - if ((tty->termios->c_cflag != old_termios->c_cflag) || - (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { + if (get_user(speed, (int __user *)argp)) + return -EFAULT; + if (speed <= 0 || speed > info->max_baud) + return -EFAULT; + if (!info->tty || !info->tty->termios || !info->ioaddr) + return 0; + info->tty->termios->c_cflag &= ~(CBAUD | CBAUDEX); + for (i = 0; i < BAUD_TABLE_NO; i++) + if (speed == mxvar_baud_table[i]) + break; + if (i == BAUD_TABLE_NO) { + info->tty->termios->c_cflag |= B_SPEC; + } else if (speed != 0) + info->tty->termios->c_cflag |= mxvar_baud_table1[i]; - mxser_change_speed(info, old_termios); + info->speed = speed; + spin_lock_irqsave(&info->slock, flags); + mxser_change_speed(info, NULL); + spin_unlock_irqrestore(&info->slock, flags); - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - mxser_start(tty); - } + return 0; + } else if (cmd == MOXA_GET_SPECIAL_BAUD_RATE) { + if (copy_to_user(argp, &info->speed, sizeof(int))) + return -EFAULT; + return 0; } -/* Handle sw stopped */ - if ((old_termios->c_iflag & IXON) && - !(tty->termios->c_iflag & IXON)) { - tty->stopped = 0; + if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT && + test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; - /* following add by Victor Yu. 09-02-2002 */ - if (info->board->chip_flag) { + 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) ? 1 : 0, (unsigned long __user *)argp); + case TIOCSSOFTCAR: + if (get_user(templ, (unsigned long __user *) argp)) + return -EFAULT; + arg = templ; + 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: { + DECLARE_WAITQUEUE(wait, current); + int ret; + spin_lock_irqsave(&info->slock, flags); + cprev = info->icount; /* note the counters on entry */ + spin_unlock_irqrestore(&info->slock, flags); + + add_wait_queue(&info->delta_msr_wait, &wait); + while (1) { spin_lock_irqsave(&info->slock, flags); - DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + cnow = info->icount; /* atomic copy */ spin_unlock_irqrestore(&info->slock, flags); - } - /* above add by Victor Yu. 09-02-2002 */ - mxser_start(tty); + set_current_state(TASK_INTERRUPTIBLE); + if (((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))) { + ret = 0; + break; + } + /* see if a signal did it */ + if (signal_pending(current)) { + ret = -ERESTARTSYS; + break; + } + cprev = cnow; + } + current->state = TASK_RUNNING; + remove_wait_queue(&info->delta_msr_wait, &wait); + break; + } + /* NOTREACHED */ + /* + * 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_SETBAUD:{ + long baud; + if (get_user(baud, (long __user *)argp)) + return -EFAULT; + spin_lock_irqsave(&info->slock, flags); + mxser_set_baud(info, baud); + spin_unlock_irqrestore(&info->slock, flags); + return 0; + } + case MOXA_ASPP_GETBAUD: + if (copy_to_user(argp, &info->realbaud, sizeof(long))) + return -EFAULT; + + 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); + + if (copy_to_user(argp, &len, sizeof(int))) + return -EFAULT; + + return 0; + } + 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 (copy_to_user(argp, &info->err_shadow, + sizeof(unsigned char))) + 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; + if (copy_to_user(argp, &method, sizeof(int))) + return -EFAULT; + + return 0; + } + 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); } } @@ -1764,8 +1998,7 @@ static void mxser_start(struct tty_struct *tty) unsigned long flags; spin_lock_irqsave(&info->slock, flags); - if (info->xmit_cnt && info->xmit_buf - /* && !(info->IER & UART_IER_THRI) */) { + 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); @@ -1773,6 +2006,40 @@ static void mxser_start(struct tty_struct *tty) 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; + + if ((tty->termios->c_cflag != old_termios->c_cflag) || + (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { + + 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 */ @@ -1836,11 +2103,10 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) #endif } - /* * This routine is called by tty_hangup() when a hangup is signaled. */ -void mxser_hangup(struct tty_struct *tty) +static void mxser_hangup(struct tty_struct *tty) { struct mxser_port *info = tty->driver_data; @@ -1853,8 +2119,6 @@ void mxser_hangup(struct tty_struct *tty) wake_up_interruptible(&info->open_wait); } - -/* added by James 03-12-2004. */ /* * mxser_rs_break() --- routine which turns the break handling on or off */ @@ -1873,249 +2137,98 @@ static void mxser_rs_break(struct tty_struct *tty, int break_state) spin_unlock_irqrestore(&info->slock, flags); } -/* (above) added by James. */ +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); -/* - * This is the serial driver's generic interrupt routine - */ -static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - int status, iir, i; - struct mxser_board *brd = NULL; - struct mxser_port *port; - int max, irqbits, bits, msr; - int pass_counter = 0; - unsigned int int_cnt; - int handled = IRQ_NONE; + 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; - /* spin_lock(&gm_lock); */ + gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); - for (i = 0; i < MXSER_BOARDS; i++) - if (dev_id == &mxser_boards[i]) { - brd = dev_id; - break; + 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: - if (i == MXSER_BOARDS) - goto irq_stop; - if (brd == NULL) - goto irq_stop; - max = mxser_numports[brd->board_type - 1]; - while (1) { - irqbits = inb(brd->vector) & brd->vector_mask; - if (irqbits == brd->vector_mask) + do { + if (max-- < 0) break; - handled = IRQ_HANDLED; - for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { - if (irqbits == brd->vector_mask) + 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; - if (bits & irqbits) - continue; - port = &brd->ports[i]; - - int_cnt = 0; - do { - /* following add by Victor Yu. 09-13-2002 */ - iir = inb(port->ioaddr + UART_IIR); - if (iir & UART_IIR_NO_INT) - break; - iir &= MOXA_MUST_IIR_MASK; - if (!port->tty) { - status = inb(port->ioaddr + UART_LSR); - outb(0x27, port->ioaddr + UART_FCR); - inb(port->ioaddr + UART_MSR); - break; - } - /* above add by Victor Yu. 09-13-2002 */ - - spin_lock(&port->slock); - /* following add by Victor Yu. 09-02-2002 */ - 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 ( (status & 0x02) && !(status & 0x01) ) { - outb(port->ioaddr+UART_FCR, 0x23); - continue; - } - */ - 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 { - /* above add by Victor Yu. 09-02-2002 */ - - 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); - - /* following add by Victor Yu. 09-13-2002 */ - if (port->board->chip_flag) { - if (iir == 0x02 && (status & - UART_LSR_THRE)) - mxser_transmit_chars(port); - } else { - /* above add by Victor Yu. 09-13-2002 */ - - if (status & UART_LSR_THRE) - mxser_transmit_chars(port); - } - spin_unlock(&port->slock); - } while (int_cnt++ < MXSER_ISR_PASS_LIMIT); - } - if (pass_counter++ > MXSER_ISR_PASS_LIMIT) - break; /* Prevent infinite loops */ - } - - irq_stop: - /* spin_unlock(&gm_lock); */ - return handled; -} - -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; - unsigned long flags; - - spin_lock_irqsave(&port->slock, flags); - - recv_room = tty->receive_room; - if ((recv_room == 0) && (!port->ldisc_stop_rx)) { - /* mxser_throttle(tty); */ - mxser_stoprx(tty); - /* return; */ - } - - /* following add by Victor Yu. 09-02-2002 */ - if (port->board->chip_flag != MOXA_OTHER_UART) { - - if (*status & UART_LSR_SPECIAL) - goto intr_old; - /* following add by Victor Yu. 02-11-2004 */ - if (port->board->chip_flag == MOXA_MUST_MU860_HWID && - (*status & MOXA_MUST_LSR_RERR)) - goto intr_old; - /* above add by Victor Yu. 02-14-2004 */ - if (*status & MOXA_MUST_LSR_RERR) - goto intr_old; - - gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); - - /* add by Victor Yu. 02-11-2004 */ - if (port->board->chip_flag == MOXA_MUST_MU150_HWID) - gdl &= MOXA_MUST_GDL_MASK; - if (gdl >= recv_room) { - if (!port->ldisc_stop_rx) { - /* mxser_throttle(tty); */ - mxser_stoprx(tty); - } - /* return; */ - } - while (gdl--) { - ch = inb(port->ioaddr + UART_RX); - tty_insert_flip_char(tty, ch, 0); - cnt++; - } - goto end_intr; - } - intr_old: - /* above add by Victor Yu. 09-02-2002 */ - - do { - if (max-- < 0) - break; - - ch = inb(port->ioaddr + UART_RX); - /* following add by Victor Yu. 09-02-2002 */ - if (port->board->chip_flag && (*status & UART_LSR_OE) - /*&& !(*status&UART_LSR_DR) */) - outb(0x23, port->ioaddr + UART_FCR); - *status &= port->read_status_mask; - /* above add by Victor Yu. 09-02-2002 */ - 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; -/* added by casper 1/11/2000 */ - port->icount.brk++; + } 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; -/* added by casper 1/11/2000 */ port->icount.parity++; } else if (*status & UART_LSR_FE) { flag = TTY_FRAME; -/* added by casper 1/11/2000 */ port->icount.frame++; } else if (*status & UART_LSR_OE) { flag = TTY_OVERRUN; -/* added by casper 1/11/2000 */ port->icount.overrun++; } else - flags = TTY_BREAK; - } else - flags = 0; + flag = TTY_BREAK; + } tty_insert_flip_char(tty, ch, flag); cnt++; if (cnt >= recv_room) { - if (!port->ldisc_stop_rx) { - /* mxser_throttle(tty); */ + if (!port->ldisc_stop_rx) mxser_stoprx(tty); - } break; } } - /* following add by Victor Yu. 09-02-2002 */ if (port->board->chip_flag) break; - /* mask by Victor Yu. 09-02-2002 - *status = inb(port->ioaddr + UART_LSR) & port->read_status_mask; - */ - /* following add by Victor Yu. 09-02-2002 */ *status = inb(port->ioaddr + UART_LSR); - /* above add by Victor Yu. 09-02-2002 */ } while (*status & UART_LSR_DR); -end_intr: /* add by Victor Yu. 09-02-2002 */ +end_intr: mxvar_log.rxcnt[port->tty->index] += cnt; port->mon_data.rxcnt += cnt; port->mon_data.up_rxcnt += cnt; - spin_unlock_irqrestore(&port->slock, flags); tty_flip_buffer_push(tty); } @@ -2123,9 +2236,6 @@ end_intr: /* add by Victor Yu. 09-02-2002 */ static void mxser_transmit_chars(struct mxser_port *port) { int count, cnt; - unsigned long flags; - - spin_lock_irqsave(&port->slock, flags); if (port->x_char) { outb(port->x_char, port->ioaddr + UART_TX); @@ -2133,28 +2243,20 @@ static void mxser_transmit_chars(struct mxser_port *port) mxvar_log.txcnt[port->tty->index]++; port->mon_data.txcnt++; port->mon_data.up_txcnt++; - -/* added by casper 1/11/2000 */ port->icount.tx++; - goto unlock; + return; } if (port->xmit_buf == 0) - goto unlock; + return; - if (port->xmit_cnt == 0) { - if (port->xmit_cnt < WAKEUP_CHARS) { /* XXX what's this for?? */ - set_bit(MXSER_EVENT_TXLOW, &port->event); - schedule_work(&port->tqueue); - } - goto unlock; - } - if (port->tty->stopped || (port->tty->hw_stopped && + 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); - goto unlock; + return; } cnt = port->xmit_cnt; @@ -2168,764 +2270,214 @@ static void mxser_transmit_chars(struct mxser_port *port) } while (--count > 0); mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt); -/* added by James 03-12-2004. */ port->mon_data.txcnt += (cnt - port->xmit_cnt); port->mon_data.up_txcnt += (cnt - port->xmit_cnt); - -/* added by casper 1/11/2000 */ port->icount.tx += (cnt - port->xmit_cnt); - if (port->xmit_cnt < WAKEUP_CHARS) { - set_bit(MXSER_EVENT_TXLOW, &port->event); - schedule_work(&port->tqueue); - } - if (port->xmit_cnt <= 0) { - port->IER &= ~UART_IER_THRI; - outb(port->IER, port->ioaddr + UART_IER); - } -unlock: - spin_unlock_irqrestore(&port->slock, flags); -} - -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); - schedule_work(&port->tqueue); - } - - 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); - } - set_bit(MXSER_EVENT_TXLOW, &port->event); - schedule_work(&port->tqueue); - } - } 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_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_port *port) -{ - DECLARE_WAITQUEUE(wait, current); - int retval; - int do_clocal = 0; - unsigned long flags; - - /* - * 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) || (tty->flags & (1 << TTY_IO_ERROR))) { - 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_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; - /* info->IER = UART_IER_RLSI | UART_IER_RDI; */ - - /* following add by Victor Yu. 08-30-2002 */ - if (info->board->chip_flag) - info->IER |= MOXA_MUST_IER_EGDAI; - /* above add by Victor Yu. 08-30-2002 */ - 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 - */ - spin_unlock_irqrestore(&info->slock, flags); - mxser_change_speed(info, NULL); - - info->flags |= ASYNC_INITIALIZED; - 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 */ - /* following add by Victor Yu. 08-30-2002 */ - 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 - /* above add by Victor Yu. 08-30-2002 */ - 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; - - /* following add by Victor Yu. 09-23-2002 */ - if (info->board->chip_flag) - SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); - /* above add by Victor Yu. 09-23-2002 */ - - spin_unlock_irqrestore(&info->slock, flags); -} - -/* - * 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 termios *old_termios) -{ - unsigned cflag, cval, fcr; - int ret = 0; - unsigned char status; - long baud; - unsigned long flags; - - if (!info->tty || !info->tty->termios) - return ret; - cflag = info->tty->termios->c_cflag; - if (!(info->ioaddr)) - return ret; - -#ifndef B921600 -#define B921600 (B460800 +1) -#endif - if (mxser_set_baud_method[info->tty->index] == 0) { - baud = tty_get_baud_rate(info->tty); - mxser_set_baud(info, baud); - } - - /* 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; - /* following add by Victor Yu. 08-30-2002 */ - if (info->board->chip_flag) { - fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; - SET_MOXA_MUST_FIFO_VALUE(info); - } else { - /* above add by Victor Yu. 08-30-2002 */ - 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; -/* status = mxser_get_msr(info->ioaddr, 0, info->port); */ -/* - save_flags(flags); - cli(); - status = inb(baseaddr + UART_MSR); - restore_flags(flags); -*/ - /* mxser_check_modem_status(info, status); */ - } else { -/* status = mxser_get_msr(info->ioaddr, 0, info->port); */ - /* MX_LOCK(&info->slock); */ - status = inb(info->ioaddr + UART_MSR); - /* MX_UNLOCK(&info->slock); */ - 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); - } - set_bit(MXSER_EVENT_TXLOW, &info->event); - schedule_work(&info->tqueue); } - } 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; - } - } - /* following add by Victor Yu. 09-02-2002 */ - if (info->board->chip_flag) { - spin_lock_irqsave(&info->slock, flags); - 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); - } - /* - if ( I_IXANY(info->tty) ) { - info->MCR |= MOXA_MUST_MCR_XON_ANY; - ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); - } else { - info->MCR &= ~MOXA_MUST_MCR_XON_ANY; - DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); - } - */ - spin_unlock_irqrestore(&info->slock, flags); - } - /* above add by Victor Yu. 09-02-2002 */ - - - outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ - outb(cval, info->ioaddr + UART_LCR); - - return ret; -} - - -static int mxser_set_baud(struct mxser_port *info, long newspd) -{ - int quot = 0; - unsigned char cval; - int ret = 0; - unsigned long flags; - - if (!info->tty || !info->tty->termios) - return ret; - - if (!(info->ioaddr)) - return ret; - - if (newspd > info->max_baud) - return 0; - - info->realbaud = newspd; - if (newspd == 134) { - quot = (2 * info->baud_base / 269); - } else if (newspd) { - quot = info->baud_base / newspd; - if (quot == 0) - quot = 1; - } 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) { - spin_lock_irqsave(&info->slock, flags); - info->MCR |= UART_MCR_DTR; - outb(info->MCR, info->ioaddr + UART_MCR); - spin_unlock_irqrestore(&info->slock, flags); - } else { - spin_lock_irqsave(&info->slock, flags); - info->MCR &= ~UART_MCR_DTR; - outb(info->MCR, info->ioaddr + UART_MCR); - spin_unlock_irqrestore(&info->slock, flags); - return ret; - } - - 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 */ - + if (port->xmit_cnt < WAKEUP_CHARS) + tty_wakeup(port->tty); - return ret; + if (port->xmit_cnt <= 0) { + port->IER &= ~UART_IER_THRI; + outb(port->IER, port->ioaddr + UART_IER); + } } /* - * ------------------------------------------------------------ - * friends of mxser_ioctl() - * ------------------------------------------------------------ + * This is the serial driver's generic interrupt routine */ -static int mxser_get_serial_info(struct mxser_port *info, - struct serial_struct __user *retinfo) +static irqreturn_t mxser_interrupt(int irq, void *dev_id) { - struct serial_struct tmp; + 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; - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->tty->index; - tmp.port = info->ioaddr; - tmp.irq = info->board->irq; - tmp.flags = info->flags; - tmp.baud_base = info->baud_base; - tmp.close_delay = info->close_delay; - tmp.closing_wait = info->closing_wait; - tmp.custom_divisor = info->custom_divisor; - tmp.hub6 = 0; - if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - return 0; -} + for (i = 0; i < MXSER_BOARDS; i++) + if (dev_id == &mxser_boards[i]) { + brd = dev_id; + break; + } -static int mxser_set_serial_info(struct mxser_port *info, - struct serial_struct __user *new_info) -{ - struct serial_struct new_serial; - unsigned int flags; - int retval = 0; + 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; - if (!new_info || !info->ioaddr) - return -EFAULT; - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; + 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]; - 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; + 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; + } - flags = info->flags & ASYNC_SPD_MASK; + status = inb(port->ioaddr + UART_LSR); - 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->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */ - } + 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; - /* added by casper, 3/17/2000, for mouse */ - info->type = new_serial.type; + 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); - process_txrx_fifo(info); + } 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 (info->flags & ASYNC_INITIALIZED) { - if (flags != (info->flags & ASYNC_SPD_MASK)) - mxser_change_speed(info, NULL); - } else - retval = mxser_startup(info); + 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); + } + } - return retval; +irq_stop: + return handled; } -/* - * 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); -} +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, +}; /* - * This routine sends a break character out the serial port. + * The MOXA Smartio/Industio serial driver boot-time initialization code! */ -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) +static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev, + unsigned int irq) { - struct mxser_port *info = tty->driver_data; - unsigned char control, status; - unsigned long flags; - - - if (tty->index == MXSER_PORTS) - return -ENOIOCTLCMD; - if (tty->flags & (1 << TTY_IO_ERROR)) - 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); + 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 mxser_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int __devinit mxser_initbrd(struct mxser_board *brd, + struct pci_dev *pdev) { - struct mxser_port *info = tty->driver_data; - unsigned long flags; + struct mxser_port *info; + unsigned int i; + int retval; + printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud); - if (tty->index == MXSER_PORTS) - return -ENOIOCTLCMD; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; + for (i = 0; i < brd->info->nports; i++) { + info = &brd->ports[i]; + info->board = brd; + info->stop_rx = 0; + info->ldisc_stop_rx = 0; - spin_lock_irqsave(&info->slock, flags); + /* Enhance mode enabled here */ + if (brd->chip_flag != MOXA_OTHER_UART) + ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr); - if (set & TIOCM_RTS) - info->MCR |= UART_MCR_RTS; - if (set & TIOCM_DTR) - info->MCR |= UART_MCR_DTR; + info->flags = ASYNC_SHARE_IRQ; + info->type = brd->uart_type; - if (clear & TIOCM_RTS) - info->MCR &= ~UART_MCR_RTS; - if (clear & TIOCM_DTR) - info->MCR &= ~UART_MCR_DTR; + process_txrx_fifo(info); - outb(info->MCR, info->ioaddr + UART_MCR); - spin_unlock_irqrestore(&info->slock, flags); - return 0; -} + 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); + info->speed = 9600; + 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); + } -static int mxser_read_register(int, unsigned short *); -static int mxser_program_mode(int); -static void mxser_normal_mode(int); + 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 mxser_get_ISA_conf(int cap, struct mxser_board *brd) +static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) { int id, i, bits; unsigned short regs[16], irq; @@ -2934,40 +2486,44 @@ static int mxser_get_ISA_conf(int cap, struct mxser_board *brd) brd->chip_flag = MOXA_OTHER_UART; id = mxser_read_register(cap, regs); - if (id == C168_ASIC_ID) { - brd->board_type = MXSER_BOARD_C168_ISA; - brd->nports = 8; - } else if (id == C104_ASIC_ID) { - brd->board_type = MXSER_BOARD_C104_ISA; - brd->nports = 4; - } else if (id == C102_ASIC_ID) { - brd->board_type = MXSER_BOARD_C102_ISA; - brd->nports = 2; - } else if (id == CI132_ASIC_ID) { - brd->board_type = MXSER_BOARD_CI132; - brd->nports = 2; - } else if (id == CI134_ASIC_ID) { - brd->board_type = MXSER_BOARD_CI134; - brd->nports = 4; - } else if (id == CI104J_ASIC_ID) { - brd->board_type = MXSER_BOARD_CI104J; - brd->nports = 4; - } else + 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; - if (brd->nports == 2) { + /* 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->nports == 4) { + } 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->nports == 8) { + } else if (brd->info->nports == 8) { irq = regs[9] & 0xF000; irq = irq | (irq >> 4); irq = irq | (irq >> 8); @@ -2990,10 +2546,10 @@ static int mxser_get_ISA_conf(int cap, struct mxser_board *brd) 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; /* add by Victor Yu. 09-04-2002 */ + brd->ports[i].max_baud = 921600; } else { brd->ports[i].baud_base = 115200; - brd->ports[i].max_baud = 115200; /* add by Victor Yu. 09-04-2002 */ + brd->ports[i].max_baud = 115200; } } scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); @@ -3007,120 +2563,276 @@ static int mxser_get_ISA_conf(int cap, struct mxser_board *brd) brd->uart_type = PORT_16550A; else brd->uart_type = PORT_16450; - if (id == 1) - brd->nports = 8; - else - brd->nports = 4; - request_region(brd->ports[0].ioaddr, 8 * brd->nports, "mxser(IO)"); - request_region(brd->vector, 1, "mxser(vector)"); - return brd->nports; + 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; } -#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 mxser_read_register(int port, unsigned short *regs) +static int __devinit mxser_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) { - int i, k, value, id; - unsigned int j; +#ifdef CONFIG_PCI + struct mxser_board *brd; + unsigned int i, j; + unsigned long ioaddress; + int retval = -EINVAL; - 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 */ + 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; } } - (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; + } + + 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; } - regs[i] = value; - outb(0, port); + outb(0, ioaddress + 4); /* default set to RS232 mode */ + outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ } - mxser_normal_mode(port); - return id; + + 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 int mxser_program_mode(int port) +static void __devexit mxser_remove(struct pci_dev *pdev) { - int id, i, j, n; - /* unsigned long flags; */ + struct mxser_board *brd = pci_get_drvdata(pdev); + unsigned int i; - spin_lock(&gm_lock); - outb(0, port); - outb(0, port); - outb(0, port); - (void)inb(port); - (void)inb(port); - outb(0, port); - (void)inb(port); - /* restore_flags(flags); */ - spin_unlock(&gm_lock); + for (i = 0; i < brd->info->nports; i++) + tty_unregister_device(mxvar_sdriver, brd->idx + i); - 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; + mxser_release_res(brd, pdev, 1); + brd->info = NULL; } -static void mxser_normal_mode(int port) +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) { - int i, n; + struct mxser_board *brd; + unsigned long cap; + unsigned int i, m, isaloop; + int retval, b; - 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); + 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; } - outb(0x00, port + 4); + + 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, + mxser_boards[i].idx + j); + tty_unregister_driver(mxvar_sdriver); + put_tty_driver(mxvar_sdriver); + + for (i = 0; i < MXSER_BOARDS; i++) + if (mxser_boards[i].info != NULL) + mxser_release_res(&mxser_boards[i], NULL, 1); + + pr_debug("Done.\n"); } module_init(mxser_module_init);