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drivers/tty/moxa.c
52.1 KB
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// SPDX-License-Identifier: GPL-2.0+ |
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/*****************************************************************************/ /* * moxa.c -- MOXA Intellio family multiport serial driver. * |
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* Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> |
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* * This code is loosely based on the Linux serial driver, written by * Linus Torvalds, Theodore T'so and others. |
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*/ /* * MOXA Intellio Series Driver * for : LINUX * date : 1999/1/7 * version : 5.1 */ |
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#include <linux/module.h> #include <linux/types.h> #include <linux/mm.h> #include <linux/ioport.h> #include <linux/errno.h> |
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#include <linux/firmware.h> |
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#include <linux/signal.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/major.h> #include <linux/string.h> #include <linux/fcntl.h> #include <linux/ptrace.h> #include <linux/serial.h> #include <linux/tty_driver.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/bitops.h> |
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#include <linux/slab.h> |
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#include <linux/ratelimit.h> |
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#include <asm/io.h> |
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#include <linux/uaccess.h> |
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#include "moxa.h" |
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#define MOXA_VERSION "6.0k" |
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#define MOXA_FW_HDRLEN 32 |
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#define MOXAMAJOR 172 |
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#define MAX_BOARDS 4 /* Don't change this value */ |
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#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
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#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
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#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ (brd)->boardType == MOXA_BOARD_C320_PCI) |
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/* * Define the Moxa PCI vendor and device IDs. */ |
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#define MOXA_BUS_TYPE_ISA 0 #define MOXA_BUS_TYPE_PCI 1 |
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enum { MOXA_BOARD_C218_PCI = 1, MOXA_BOARD_C218_ISA, MOXA_BOARD_C320_PCI, MOXA_BOARD_C320_ISA, MOXA_BOARD_CP204J, }; static char *moxa_brdname[] = { "C218 Turbo PCI series", "C218 Turbo ISA series", "C320 Turbo PCI series", "C320 Turbo ISA series", "CP-204J series", }; #ifdef CONFIG_PCI |
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static const struct pci_device_id moxa_pcibrds[] = { |
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{ PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), .driver_data = MOXA_BOARD_C218_PCI }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), .driver_data = MOXA_BOARD_C320_PCI }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), .driver_data = MOXA_BOARD_CP204J }, |
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{ 0 } }; MODULE_DEVICE_TABLE(pci, moxa_pcibrds); #endif /* CONFIG_PCI */ |
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struct moxa_port; |
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static struct moxa_board_conf { |
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int boardType; int numPorts; |
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int busType; |
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unsigned int ready; |
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struct moxa_port *ports; |
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void __iomem *basemem; void __iomem *intNdx; void __iomem *intPend; void __iomem *intTable; } moxa_boards[MAX_BOARDS]; struct mxser_mstatus { tcflag_t cflag; int cts; int dsr; int ri; int dcd; |
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}; |
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struct moxaq_str { int inq; int outq; }; |
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struct moxa_port { |
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struct tty_port port; |
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struct moxa_board_conf *board; |
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void __iomem *tableAddr; |
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int type; |
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int cflag; |
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unsigned long statusflags; |
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u8 DCDState; /* Protected by the port lock */ |
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u8 lineCtrl; u8 lowChkFlag; |
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}; |
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struct mon_str { int tick; int rxcnt[MAX_PORTS]; int txcnt[MAX_PORTS]; }; |
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/* statusflags */ |
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#define TXSTOPPED 1 #define LOWWAIT 2 #define EMPTYWAIT 3 |
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#define WAKEUP_CHARS 256 |
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static int ttymajor = MOXAMAJOR; |
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static struct mon_str moxaLog; static unsigned int moxaFuncTout = HZ / 2; |
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static unsigned int moxaLowWaterChk; |
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static DEFINE_MUTEX(moxa_openlock); |
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static DEFINE_SPINLOCK(moxa_lock); |
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static unsigned long baseaddr[MAX_BOARDS]; static unsigned int type[MAX_BOARDS]; static unsigned int numports[MAX_BOARDS]; |
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static struct tty_port moxa_service_port; |
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MODULE_AUTHOR("William Chen"); MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); MODULE_LICENSE("GPL"); |
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MODULE_FIRMWARE("c218tunx.cod"); MODULE_FIRMWARE("cp204unx.cod"); MODULE_FIRMWARE("c320tunx.cod"); |
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module_param_array(type, uint, NULL, 0); MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); |
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module_param_hw_array(baseaddr, ulong, ioport, NULL, 0); |
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MODULE_PARM_DESC(baseaddr, "base address"); module_param_array(numports, uint, NULL, 0); MODULE_PARM_DESC(numports, "numports (ignored for C218)"); |
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module_param(ttymajor, int, 0); |
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/* * static functions: */ |
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static int moxa_open(struct tty_struct *, struct file *); static void moxa_close(struct tty_struct *, struct file *); static int moxa_write(struct tty_struct *, const unsigned char *, int); static int moxa_write_room(struct tty_struct *); static void moxa_flush_buffer(struct tty_struct *); static int moxa_chars_in_buffer(struct tty_struct *); |
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static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
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static void moxa_stop(struct tty_struct *); static void moxa_start(struct tty_struct *); static void moxa_hangup(struct tty_struct *); |
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static int moxa_tiocmget(struct tty_struct *tty); |
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static int moxa_tiocmset(struct tty_struct *tty, |
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unsigned int set, unsigned int clear); |
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static void moxa_poll(struct timer_list *); |
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static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
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static void moxa_shutdown(struct tty_port *); |
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static int moxa_carrier_raised(struct tty_port *); |
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static void moxa_dtr_rts(struct tty_port *, int); |
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/* * moxa board interface functions: */ |
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static void MoxaPortEnable(struct moxa_port *); static void MoxaPortDisable(struct moxa_port *); static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); static void MoxaPortLineCtrl(struct moxa_port *, int, int); static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); static int MoxaPortLineStatus(struct moxa_port *); |
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static void MoxaPortFlushData(struct moxa_port *, int); |
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static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); |
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static int MoxaPortReadData(struct moxa_port *); |
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static int MoxaPortTxQueue(struct moxa_port *); static int MoxaPortRxQueue(struct moxa_port *); static int MoxaPortTxFree(struct moxa_port *); static void MoxaPortTxDisable(struct moxa_port *); static void MoxaPortTxEnable(struct moxa_port *); |
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static int moxa_get_serial_info(struct tty_struct *, struct serial_struct *); static int moxa_set_serial_info(struct tty_struct *, struct serial_struct *); |
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static void MoxaSetFifo(struct moxa_port *port, int enable); |
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/* * I/O functions */ |
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static DEFINE_SPINLOCK(moxafunc_lock); |
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static void moxa_wait_finish(void __iomem *ofsAddr) { unsigned long end = jiffies + moxaFuncTout; while (readw(ofsAddr + FuncCode) != 0) if (time_after(jiffies, end)) return; |
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if (readw(ofsAddr + FuncCode) != 0) printk_ratelimited(KERN_WARNING "moxa function expired "); |
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} |
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static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) |
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{ |
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unsigned long flags; spin_lock_irqsave(&moxafunc_lock, flags); |
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writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); moxa_wait_finish(ofsAddr); |
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spin_unlock_irqrestore(&moxafunc_lock, flags); } static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) { unsigned long flags; u16 ret; spin_lock_irqsave(&moxafunc_lock, flags); writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); moxa_wait_finish(ofsAddr); ret = readw(ofsAddr + FuncArg); spin_unlock_irqrestore(&moxafunc_lock, flags); return ret; |
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} |
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static void moxa_low_water_check(void __iomem *ofsAddr) { u16 rptr, wptr, mask, len; if (readb(ofsAddr + FlagStat) & Xoff_state) { rptr = readw(ofsAddr + RXrptr); wptr = readw(ofsAddr + RXwptr); mask = readw(ofsAddr + RX_mask); len = (wptr - rptr) & mask; if (len <= Low_water) moxafunc(ofsAddr, FC_SendXon, 0); } } |
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/* * TTY operations */ |
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static int moxa_ioctl(struct tty_struct *tty, |
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unsigned int cmd, unsigned long arg) { struct moxa_port *ch = tty->driver_data; void __user *argp = (void __user *)arg; |
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int status, ret = 0; |
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if (tty->index == MAX_PORTS) { if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && cmd != MOXA_GETMSTATUS) return -EINVAL; } else if (!ch) return -ENODEV; switch (cmd) { case MOXA_GETDATACOUNT: moxaLog.tick = jiffies; |
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if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) ret = -EFAULT; break; |
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case MOXA_FLUSH_QUEUE: MoxaPortFlushData(ch, arg); |
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break; |
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case MOXA_GET_IOQUEUE: { struct moxaq_str __user *argm = argp; struct moxaq_str tmp; struct moxa_port *p; unsigned int i, j; for (i = 0; i < MAX_BOARDS; i++) { p = moxa_boards[i].ports; for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { memset(&tmp, 0, sizeof(tmp)); |
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spin_lock_bh(&moxa_lock); |
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if (moxa_boards[i].ready) { tmp.inq = MoxaPortRxQueue(p); tmp.outq = MoxaPortTxQueue(p); } |
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spin_unlock_bh(&moxa_lock); if (copy_to_user(argm, &tmp, sizeof(tmp))) |
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return -EFAULT; } } |
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break; |
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} case MOXA_GET_OQUEUE: status = MoxaPortTxQueue(ch); |
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ret = put_user(status, (unsigned long __user *)argp); break; |
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case MOXA_GET_IQUEUE: status = MoxaPortRxQueue(ch); |
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ret = put_user(status, (unsigned long __user *)argp); break; |
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case MOXA_GETMSTATUS: { struct mxser_mstatus __user *argm = argp; struct mxser_mstatus tmp; struct moxa_port *p; unsigned int i, j; for (i = 0; i < MAX_BOARDS; i++) { p = moxa_boards[i].ports; for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { |
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struct tty_struct *ttyp; |
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memset(&tmp, 0, sizeof(tmp)); |
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spin_lock_bh(&moxa_lock); if (!moxa_boards[i].ready) { spin_unlock_bh(&moxa_lock); |
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goto copy; |
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} |
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status = MoxaPortLineStatus(p); |
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spin_unlock_bh(&moxa_lock); |
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if (status & 1) tmp.cts = 1; if (status & 2) tmp.dsr = 1; if (status & 4) tmp.dcd = 1; |
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ttyp = tty_port_tty_get(&p->port); |
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if (!ttyp) |
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tmp.cflag = p->cflag; else |
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tmp.cflag = ttyp->termios.c_cflag; |
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tty_kref_put(ttyp); |
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copy: |
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if (copy_to_user(argm, &tmp, sizeof(tmp))) |
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return -EFAULT; } } |
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break; |
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} |
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default: ret = -ENOIOCTLCMD; |
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} |
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return ret; |
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} |
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static int moxa_break_ctl(struct tty_struct *tty, int state) |
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{ struct moxa_port *port = tty->driver_data; moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, Magic_code); |
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return 0; |
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} |
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static const struct tty_operations moxa_ops = { |
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.open = moxa_open, .close = moxa_close, .write = moxa_write, .write_room = moxa_write_room, .flush_buffer = moxa_flush_buffer, .chars_in_buffer = moxa_chars_in_buffer, |
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.ioctl = moxa_ioctl, |
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.set_termios = moxa_set_termios, .stop = moxa_stop, .start = moxa_start, .hangup = moxa_hangup, |
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.break_ctl = moxa_break_ctl, |
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.tiocmget = moxa_tiocmget, .tiocmset = moxa_tiocmset, |
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.set_serial = moxa_set_serial_info, .get_serial = moxa_get_serial_info, |
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}; |
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static const struct tty_port_operations moxa_port_ops = { .carrier_raised = moxa_carrier_raised, |
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.dtr_rts = moxa_dtr_rts, .shutdown = moxa_shutdown, |
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}; |
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static struct tty_driver *moxaDriver; |
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static DEFINE_TIMER(moxaTimer, moxa_poll); |
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/* * HW init */ |
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static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) { switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: if (model != 1) goto err; break; case MOXA_BOARD_CP204J: if (model != 3) goto err; break; default: if (model != 2) goto err; break; } return 0; err: return -EINVAL; } static int moxa_check_fw(const void *ptr) { const __le16 *lptr = ptr; if (*lptr != cpu_to_le16(0x7980)) return -EINVAL; return 0; } static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, size_t len) { void __iomem *baseAddr = brd->basemem; u16 tmp; writeb(HW_reset, baseAddr + Control_reg); /* reset */ msleep(10); memset_io(baseAddr, 0, 4096); memcpy_toio(baseAddr, buf, len); /* download BIOS */ writeb(0, baseAddr + Control_reg); /* restart */ msleep(2000); switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: tmp = readw(baseAddr + C218_key); if (tmp != C218_KeyCode) goto err; break; case MOXA_BOARD_CP204J: tmp = readw(baseAddr + C218_key); if (tmp != CP204J_KeyCode) goto err; break; default: tmp = readw(baseAddr + C320_key); if (tmp != C320_KeyCode) goto err; tmp = readw(baseAddr + C320_status); if (tmp != STS_init) { |
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printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
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"module not found "); return -EIO; } break; } return 0; err: |
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printk(KERN_ERR "MOXA: bios upload failed -- board not found "); |
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return -EIO; } static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, size_t len) { void __iomem *baseAddr = brd->basemem; if (len < 7168) { |
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printk(KERN_ERR "MOXA: invalid 320 bios -- too short "); |
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return -EINVAL; } writew(len - 7168 - 2, baseAddr + C320bapi_len); writeb(1, baseAddr + Control_reg); /* Select Page 1 */ memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); writeb(2, baseAddr + Control_reg); /* Select Page 2 */ memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); return 0; } |
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static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
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|
502 503 504 |
size_t len) { void __iomem *baseAddr = brd->basemem; |
b46f69cd2
|
505 |
const __le16 *uptr = ptr; |
037182346
|
506 |
size_t wlen, len2, j; |
5292bcd38
|
507 |
unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
08d01c792
|
508 |
unsigned int i, retry; |
037182346
|
509 |
u16 usum, keycode; |
5292bcd38
|
510 511 |
keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : C218_KeyCode; |
037182346
|
512 |
|
5292bcd38
|
513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 |
switch (brd->boardType) { case MOXA_BOARD_CP204J: case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: key = C218_key; loadbuf = C218_LoadBuf; loadlen = C218DLoad_len; checksum = C218check_sum; checksum_ok = C218chksum_ok; break; default: key = C320_key; keycode = C320_KeyCode; loadbuf = C320_LoadBuf; loadlen = C320DLoad_len; checksum = C320check_sum; checksum_ok = C320chksum_ok; break; |
037182346
|
531 |
} |
037182346
|
532 533 534 535 536 537 538 539 540 541 542 543 |
usum = 0; wlen = len >> 1; for (i = 0; i < wlen; i++) usum += le16_to_cpu(uptr[i]); retry = 0; do { wlen = len >> 1; j = 0; while (wlen) { len2 = (wlen > 2048) ? 2048 : wlen; wlen -= len2; |
5292bcd38
|
544 |
memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
037182346
|
545 |
j += len2 << 1; |
5292bcd38
|
546 547 548 549 550 |
writew(len2, baseAddr + loadlen); writew(0, baseAddr + key); for (i = 0; i < 100; i++) { if (readw(baseAddr + key) == keycode) |
037182346
|
551 552 553 |
break; msleep(10); } |
5292bcd38
|
554 |
if (readw(baseAddr + key) != keycode) |
037182346
|
555 556 |
return -EIO; } |
5292bcd38
|
557 558 559 560 561 |
writew(0, baseAddr + loadlen); writew(usum, baseAddr + checksum); writew(0, baseAddr + key); for (i = 0; i < 100; i++) { if (readw(baseAddr + key) == keycode) |
037182346
|
562 563 564 565 |
break; msleep(10); } retry++; |
5292bcd38
|
566 567 |
} while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); if (readb(baseAddr + checksum_ok) != 1) |
037182346
|
568 |
return -EIO; |
5292bcd38
|
569 |
writew(0, baseAddr + key); |
037182346
|
570 571 572 573 574 575 576 |
for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; |
08d01c792
|
577 |
if (MOXA_IS_320(brd)) { |
5292bcd38
|
578 579 580 581 582 583 584 585 586 |
if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ writew(0x3800, baseAddr + TMS320_PORT1); writew(0x3900, baseAddr + TMS320_PORT2); writew(28499, baseAddr + TMS320_CLOCK); } else { writew(0x3200, baseAddr + TMS320_PORT1); writew(0x3400, baseAddr + TMS320_PORT2); writew(19999, baseAddr + TMS320_CLOCK); } |
037182346
|
587 588 589 590 591 592 593 594 595 596 |
} writew(1, baseAddr + Disable_IRQ); writew(0, baseAddr + Magic_no); for (i = 0; i < 500; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; |
08d01c792
|
597 |
if (MOXA_IS_320(brd)) { |
5292bcd38
|
598 599 600 601 602 603 604 605 606 607 608 609 610 |
j = readw(baseAddr + Module_cnt); if (j <= 0) return -EIO; brd->numPorts = j * 8; writew(j, baseAddr + Module_no); writew(0, baseAddr + Magic_no); for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; |
037182346
|
611 |
} |
037182346
|
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 |
brd->intNdx = baseAddr + IRQindex; brd->intPend = baseAddr + IRQpending; brd->intTable = baseAddr + IRQtable; return 0; } static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, size_t len) { void __iomem *ofsAddr, *baseAddr = brd->basemem; struct moxa_port *port; int retval, i; if (len % 2) { |
eaa95a8da
|
627 628 |
printk(KERN_ERR "MOXA: bios length is not even "); |
037182346
|
629 630 |
return -EINVAL; } |
5292bcd38
|
631 632 633 |
retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ if (retval) return retval; |
037182346
|
634 635 636 637 |
switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: case MOXA_BOARD_CP204J: |
037182346
|
638 639 |
port = brd->ports; for (i = 0; i < brd->numPorts; i++, port++) { |
b4173f457
|
640 |
port->board = brd; |
037182346
|
641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 |
port->DCDState = 0; port->tableAddr = baseAddr + Extern_table + Extern_size * i; ofsAddr = port->tableAddr; writew(C218rx_mask, ofsAddr + RX_mask); writew(C218tx_mask, ofsAddr + TX_mask); writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); } break; default: |
037182346
|
656 657 |
port = brd->ports; for (i = 0; i < brd->numPorts; i++, port++) { |
b4173f457
|
658 |
port->board = brd; |
037182346
|
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 |
port->DCDState = 0; port->tableAddr = baseAddr + Extern_table + Extern_size * i; ofsAddr = port->tableAddr; switch (brd->numPorts) { case 8: writew(C320p8rx_mask, ofsAddr + RX_mask); writew(C320p8tx_mask, ofsAddr + TX_mask); writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); break; case 16: writew(C320p16rx_mask, ofsAddr + RX_mask); writew(C320p16tx_mask, ofsAddr + TX_mask); writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); break; case 24: writew(C320p24rx_mask, ofsAddr + RX_mask); writew(C320p24tx_mask, ofsAddr + TX_mask); writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); break; case 32: writew(C320p32rx_mask, ofsAddr + RX_mask); writew(C320p32tx_mask, ofsAddr + TX_mask); writew(C320p32tx_ofs, ofsAddr + Ofs_txb); writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); break; } } break; } |
037182346
|
703 704 705 706 707 |
return 0; } static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) { |
2bca76e89
|
708 |
const void *ptr = fw->data; |
037182346
|
709 710 711 712 713 714 715 716 717 718 719 720 |
char rsn[64]; u16 lens[5]; size_t len; unsigned int a, lenp, lencnt; int ret = -EINVAL; struct { __le32 magic; /* 0x34303430 */ u8 reserved1[2]; u8 type; /* UNIX = 3 */ u8 model; /* C218T=1, C320T=2, CP204=3 */ u8 reserved2[8]; __le16 len[5]; |
2bca76e89
|
721 |
} const *hdr = ptr; |
037182346
|
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 |
BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); if (fw->size < MOXA_FW_HDRLEN) { strcpy(rsn, "too short (even header won't fit)"); goto err; } if (hdr->magic != cpu_to_le32(0x30343034)) { sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); goto err; } if (hdr->type != 3) { sprintf(rsn, "not for linux, type is %u", hdr->type); goto err; } if (moxa_check_fw_model(brd, hdr->model)) { sprintf(rsn, "not for this card, model is %u", hdr->model); goto err; } len = MOXA_FW_HDRLEN; lencnt = hdr->model == 2 ? 5 : 3; for (a = 0; a < ARRAY_SIZE(lens); a++) { lens[a] = le16_to_cpu(hdr->len[a]); if (lens[a] && len + lens[a] <= fw->size && moxa_check_fw(&fw->data[len])) |
eaa95a8da
|
748 |
printk(KERN_WARNING "MOXA firmware: unexpected input " |
037182346
|
749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 |
"at offset %u, but going on ", (u32)len); if (!lens[a] && a < lencnt) { sprintf(rsn, "too few entries in fw file"); goto err; } len += lens[a]; } if (len != fw->size) { sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, (u32)len); goto err; } ptr += MOXA_FW_HDRLEN; lenp = 0; /* bios */ strcpy(rsn, "read above"); ret = moxa_load_bios(brd, ptr, lens[lenp]); if (ret) goto err; /* we skip the tty section (lens[1]), since we don't need it */ ptr += lens[lenp] + lens[lenp + 1]; lenp += 2; /* comm */ if (hdr->model == 2) { ret = moxa_load_320b(brd, ptr, lens[lenp]); if (ret) goto err; /* skip another tty */ ptr += lens[lenp] + lens[lenp + 1]; lenp += 2; } ret = moxa_load_code(brd, ptr, lens[lenp]); if (ret) goto err; return 0; err: printk(KERN_ERR "firmware failed to load, reason: %s ", rsn); return ret; } static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) { const struct firmware *fw; const char *file; |
810ab09b2
|
801 |
struct moxa_port *p; |
793be8984
|
802 |
unsigned int i, first_idx; |
037182346
|
803 |
int ret; |
810ab09b2
|
804 805 806 807 808 809 810 811 812 813 |
brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), GFP_KERNEL); if (brd->ports == NULL) { printk(KERN_ERR "cannot allocate memory for ports "); ret = -ENOMEM; goto err; } for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { |
44b7d1b37
|
814 |
tty_port_init(&p->port); |
31f35939d
|
815 |
p->port.ops = &moxa_port_ops; |
810ab09b2
|
816 |
p->type = PORT_16550A; |
810ab09b2
|
817 |
p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
810ab09b2
|
818 |
} |
037182346
|
819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 |
switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: file = "c218tunx.cod"; break; case MOXA_BOARD_CP204J: file = "cp204unx.cod"; break; default: file = "c320tunx.cod"; break; } ret = request_firmware(&fw, file, dev); if (ret) { |
ec09cd562
|
834 835 836 837 838 |
printk(KERN_ERR "MOXA: request_firmware failed. Make sure " "you've placed '%s' file into your firmware " "loader directory (e.g. /lib/firmware) ", file); |
810ab09b2
|
839 |
goto err_free; |
037182346
|
840 841 842 843 844 |
} ret = moxa_load_fw(brd, fw); release_firmware(fw); |
810ab09b2
|
845 846 847 |
if (ret) goto err_free; |
2a5413416
|
848 |
spin_lock_bh(&moxa_lock); |
810ab09b2
|
849 |
brd->ready = 1; |
0bcc4caad
|
850 851 |
if (!timer_pending(&moxaTimer)) mod_timer(&moxaTimer, jiffies + HZ / 50); |
2a5413416
|
852 |
spin_unlock_bh(&moxa_lock); |
0bcc4caad
|
853 |
|
793be8984
|
854 855 856 857 |
first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD; for (i = 0; i < brd->numPorts; i++) tty_port_register_device(&brd->ports[i].port, moxaDriver, first_idx + i, dev); |
810ab09b2
|
858 859 |
return 0; err_free: |
191c5f102
|
860 861 |
for (i = 0; i < MAX_PORTS_PER_BOARD; i++) tty_port_destroy(&brd->ports[i].port); |
810ab09b2
|
862 863 |
kfree(brd->ports); err: |
037182346
|
864 865 |
return ret; } |
810ab09b2
|
866 867 |
static void moxa_board_deinit(struct moxa_board_conf *brd) { |
793be8984
|
868 |
unsigned int a, opened, first_idx; |
a8f5cda06
|
869 870 |
mutex_lock(&moxa_openlock); |
7bcf97d1d
|
871 |
spin_lock_bh(&moxa_lock); |
810ab09b2
|
872 |
brd->ready = 0; |
7bcf97d1d
|
873 |
spin_unlock_bh(&moxa_lock); |
a8f5cda06
|
874 875 876 |
/* pci hot-un-plug support */ for (a = 0; a < brd->numPorts; a++) |
d41861ca1
|
877 |
if (tty_port_initialized(&brd->ports[a].port)) |
aa27a094e
|
878 |
tty_port_tty_hangup(&brd->ports[a].port, false); |
191c5f102
|
879 880 |
for (a = 0; a < MAX_PORTS_PER_BOARD; a++) tty_port_destroy(&brd->ports[a].port); |
aa27a094e
|
881 |
|
a8f5cda06
|
882 883 884 |
while (1) { opened = 0; for (a = 0; a < brd->numPorts; a++) |
d41861ca1
|
885 |
if (tty_port_initialized(&brd->ports[a].port)) |
a8f5cda06
|
886 887 888 889 890 891 892 |
opened++; mutex_unlock(&moxa_openlock); if (!opened) break; msleep(50); mutex_lock(&moxa_openlock); } |
793be8984
|
893 894 895 |
first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD; for (a = 0; a < brd->numPorts; a++) tty_unregister_device(moxaDriver, first_idx + a); |
810ab09b2
|
896 897 898 899 |
iounmap(brd->basemem); brd->basemem = NULL; kfree(brd->ports); } |
1da177e4c
|
900 |
#ifdef CONFIG_PCI |
9671f0992
|
901 |
static int moxa_pci_probe(struct pci_dev *pdev, |
9cde5bf02
|
902 |
const struct pci_device_id *ent) |
1da177e4c
|
903 |
{ |
9cde5bf02
|
904 905 906 907 908 909 |
struct moxa_board_conf *board; unsigned int i; int board_type = ent->driver_data; int retval; retval = pci_enable_device(pdev); |
7aeb95daf
|
910 911 912 |
if (retval) { dev_err(&pdev->dev, "can't enable pci device "); |
9cde5bf02
|
913 |
goto err; |
7aeb95daf
|
914 |
} |
9cde5bf02
|
915 916 917 918 919 920 921 |
for (i = 0; i < MAX_BOARDS; i++) if (moxa_boards[i].basemem == NULL) break; retval = -ENODEV; if (i >= MAX_BOARDS) { |
7aeb95daf
|
922 |
dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf02
|
923 924 925 926 927 928 |
"found. Board is ignored. ", MAX_BOARDS); goto err; } board = &moxa_boards[i]; |
e46a5e3ff
|
929 930 931 932 933 934 935 |
retval = pci_request_region(pdev, 2, "moxa-base"); if (retval) { dev_err(&pdev->dev, "can't request pci region 2 "); goto err; } |
4bdc0d676
|
936 |
board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); |
7aeb95daf
|
937 938 939 |
if (board->basemem == NULL) { dev_err(&pdev->dev, "can't remap io space 2 "); |
386d95b3a
|
940 |
retval = -ENOMEM; |
e46a5e3ff
|
941 |
goto err_reg; |
7aeb95daf
|
942 |
} |
9cde5bf02
|
943 |
|
1da177e4c
|
944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 |
board->boardType = board_type; switch (board_type) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: board->numPorts = 8; break; case MOXA_BOARD_CP204J: board->numPorts = 4; break; default: board->numPorts = 0; break; } board->busType = MOXA_BUS_TYPE_PCI; |
a784bf7c1
|
959 |
|
037182346
|
960 961 962 |
retval = moxa_init_board(board, &pdev->dev); if (retval) goto err_base; |
9cde5bf02
|
963 |
pci_set_drvdata(pdev, board); |
1da177e4c
|
964 |
|
bb9f910a1
|
965 966 967 |
dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded) ", moxa_brdname[board_type - 1], board->numPorts); |
eaa95a8da
|
968 |
return 0; |
037182346
|
969 970 971 |
err_base: iounmap(board->basemem); board->basemem = NULL; |
e46a5e3ff
|
972 973 |
err_reg: pci_release_region(pdev, 2); |
9cde5bf02
|
974 975 976 |
err: return retval; } |
ae8d8a146
|
977 |
static void moxa_pci_remove(struct pci_dev *pdev) |
9cde5bf02
|
978 979 |
{ struct moxa_board_conf *brd = pci_get_drvdata(pdev); |
810ab09b2
|
980 |
moxa_board_deinit(brd); |
e46a5e3ff
|
981 |
pci_release_region(pdev, 2); |
1da177e4c
|
982 |
} |
a784bf7c1
|
983 984 985 986 987 |
static struct pci_driver moxa_pci_driver = { .name = "moxa", .id_table = moxa_pcibrds, .probe = moxa_pci_probe, |
91116cba5
|
988 |
.remove = moxa_pci_remove |
a784bf7c1
|
989 |
}; |
1da177e4c
|
990 991 992 993 |
#endif /* CONFIG_PCI */ static int __init moxa_init(void) { |
810ab09b2
|
994 |
unsigned int isabrds = 0; |
d353eca4e
|
995 |
int retval = 0; |
c6fc826e4
|
996 997 |
struct moxa_board_conf *brd = moxa_boards; unsigned int i; |
1da177e4c
|
998 |
|
7aeb95daf
|
999 1000 1001 |
printk(KERN_INFO "MOXA Intellio family driver version %s ", MOXA_VERSION); |
793be8984
|
1002 1003 1004 1005 1006 1007 |
tty_port_init(&moxa_service_port); moxaDriver = tty_alloc_driver(MAX_PORTS + 1, TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV); |
c3a6344ae
|
1008 1009 |
if (IS_ERR(moxaDriver)) return PTR_ERR(moxaDriver); |
1da177e4c
|
1010 |
|
9b4e3b13b
|
1011 |
moxaDriver->name = "ttyMX"; |
1da177e4c
|
1012 1013 1014 1015 1016 |
moxaDriver->major = ttymajor; moxaDriver->minor_start = 0; moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; moxaDriver->subtype = SERIAL_TYPE_NORMAL; moxaDriver->init_termios = tty_std_termios; |
1da177e4c
|
1017 |
moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099cd
|
1018 1019 |
moxaDriver->init_termios.c_ispeed = 9600; moxaDriver->init_termios.c_ospeed = 9600; |
1da177e4c
|
1020 |
tty_set_operations(moxaDriver, &moxa_ops); |
793be8984
|
1021 1022 |
/* Having one more port only for ioctls is ugly */ tty_port_link_device(&moxa_service_port, moxaDriver, MAX_PORTS); |
1da177e4c
|
1023 |
|
1da177e4c
|
1024 |
if (tty_register_driver(moxaDriver)) { |
eaa95a8da
|
1025 1026 |
printk(KERN_ERR "can't register MOXA Smartio tty driver! "); |
1da177e4c
|
1027 1028 1029 |
put_tty_driver(moxaDriver); return -1; } |
1da177e4c
|
1030 |
|
d353eca4e
|
1031 |
/* Find the boards defined from module args. */ |
c6fc826e4
|
1032 |
|
1da177e4c
|
1033 |
for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4e
|
1034 1035 1036 1037 |
if (!baseaddr[i]) break; if (type[i] == MOXA_BOARD_C218_ISA || type[i] == MOXA_BOARD_C320_ISA) { |
7aeb95daf
|
1038 1039 |
pr_debug("Moxa board %2d: %s board(baseAddr=%lx) ", |
d353eca4e
|
1040 1041 1042 1043 1044 1045 |
isabrds + 1, moxa_brdname[type[i] - 1], baseaddr[i]); brd->boardType = type[i]; brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : numports[i]; brd->busType = MOXA_BUS_TYPE_ISA; |
4bdc0d676
|
1046 |
brd->basemem = ioremap(baseaddr[i], 0x4000); |
d353eca4e
|
1047 |
if (!brd->basemem) { |
eaa95a8da
|
1048 1049 |
printk(KERN_ERR "MOXA: can't remap %lx ", |
d353eca4e
|
1050 |
baseaddr[i]); |
1da177e4c
|
1051 1052 |
continue; } |
037182346
|
1053 1054 1055 1056 1057 |
if (moxa_init_board(brd, NULL)) { iounmap(brd->basemem); brd->basemem = NULL; continue; } |
d353eca4e
|
1058 |
|
e0525393b
|
1059 |
printk(KERN_INFO "MOXA isa board found at 0x%.8lx and " |
bb9f910a1
|
1060 1061 1062 |
"ready (%u ports, firmware loaded) ", baseaddr[i], brd->numPorts); |
d353eca4e
|
1063 1064 |
brd++; isabrds++; |
1da177e4c
|
1065 1066 |
} } |
a784bf7c1
|
1067 |
|
1da177e4c
|
1068 |
#ifdef CONFIG_PCI |
a784bf7c1
|
1069 1070 |
retval = pci_register_driver(&moxa_pci_driver); if (retval) { |
eaa95a8da
|
1071 1072 |
printk(KERN_ERR "Can't register MOXA pci driver! "); |
d353eca4e
|
1073 |
if (isabrds) |
a784bf7c1
|
1074 |
retval = 0; |
1da177e4c
|
1075 1076 |
} #endif |
a784bf7c1
|
1077 |
|
a784bf7c1
|
1078 |
return retval; |
1da177e4c
|
1079 1080 1081 1082 |
} static void __exit moxa_exit(void) { |
eaa95a8da
|
1083 |
unsigned int i; |
1da177e4c
|
1084 |
|
9cde5bf02
|
1085 |
#ifdef CONFIG_PCI |
a784bf7c1
|
1086 |
pci_unregister_driver(&moxa_pci_driver); |
9cde5bf02
|
1087 |
#endif |
a784bf7c1
|
1088 |
|
810ab09b2
|
1089 1090 1091 |
for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ if (moxa_boards[i].ready) moxa_board_deinit(&moxa_boards[i]); |
2a5413416
|
1092 1093 1094 1095 1096 1097 1098 1099 |
del_timer_sync(&moxaTimer); if (tty_unregister_driver(moxaDriver)) printk(KERN_ERR "Couldn't unregister MOXA Intellio family " "serial driver "); put_tty_driver(moxaDriver); |
1da177e4c
|
1100 1101 1102 1103 |
} module_init(moxa_init); module_exit(moxa_exit); |
f176178ba
|
1104 |
static void moxa_shutdown(struct tty_port *port) |
a8f5cda06
|
1105 |
{ |
f176178ba
|
1106 1107 |
struct moxa_port *ch = container_of(port, struct moxa_port, port); MoxaPortDisable(ch); |
a8f5cda06
|
1108 |
MoxaPortFlushData(ch, 2); |
a8f5cda06
|
1109 |
} |
31f35939d
|
1110 1111 1112 1113 |
static int moxa_carrier_raised(struct tty_port *port) { struct moxa_port *ch = container_of(port, struct moxa_port, port); int dcd; |
8482bcd58
|
1114 |
spin_lock_irq(&port->lock); |
31f35939d
|
1115 |
dcd = ch->DCDState; |
8482bcd58
|
1116 |
spin_unlock_irq(&port->lock); |
31f35939d
|
1117 1118 |
return dcd; } |
f176178ba
|
1119 |
static void moxa_dtr_rts(struct tty_port *port, int onoff) |
a8f5cda06
|
1120 |
{ |
f176178ba
|
1121 1122 |
struct moxa_port *ch = container_of(port, struct moxa_port, port); MoxaPortLineCtrl(ch, onoff, onoff); |
a8f5cda06
|
1123 |
} |
f176178ba
|
1124 |
|
1da177e4c
|
1125 1126 |
static int moxa_open(struct tty_struct *tty, struct file *filp) { |
810ab09b2
|
1127 |
struct moxa_board_conf *brd; |
8f8ecbad0
|
1128 |
struct moxa_port *ch; |
1da177e4c
|
1129 |
int port; |
1da177e4c
|
1130 |
|
11324edd4
|
1131 |
port = tty->index; |
1da177e4c
|
1132 |
if (port == MAX_PORTS) { |
74d7d97b9
|
1133 |
return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4c
|
1134 |
} |
a8f5cda06
|
1135 1136 |
if (mutex_lock_interruptible(&moxa_openlock)) return -ERESTARTSYS; |
810ab09b2
|
1137 |
brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda06
|
1138 1139 |
if (!brd->ready) { mutex_unlock(&moxa_openlock); |
810ab09b2
|
1140 |
return -ENODEV; |
a8f5cda06
|
1141 |
} |
1da177e4c
|
1142 |
|
f0e852772
|
1143 1144 1145 1146 |
if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { mutex_unlock(&moxa_openlock); return -ENODEV; } |
810ab09b2
|
1147 |
ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
9de6a51fe
|
1148 |
ch->port.count++; |
1da177e4c
|
1149 |
tty->driver_data = ch; |
d450b5a01
|
1150 |
tty_port_tty_set(&ch->port, tty); |
f176178ba
|
1151 |
mutex_lock(&ch->port.mutex); |
d41861ca1
|
1152 |
if (!tty_port_initialized(&ch->port)) { |
1da177e4c
|
1153 |
ch->statusflags = 0; |
adc8d746c
|
1154 |
moxa_set_tty_param(tty, &tty->termios); |
b4173f457
|
1155 1156 |
MoxaPortLineCtrl(ch, 1, 1); MoxaPortEnable(ch); |
a8f5cda06
|
1157 |
MoxaSetFifo(ch, ch->type == PORT_16550A); |
d41861ca1
|
1158 |
tty_port_set_initialized(&ch->port, 1); |
1da177e4c
|
1159 |
} |
f176178ba
|
1160 |
mutex_unlock(&ch->port.mutex); |
a8f5cda06
|
1161 |
mutex_unlock(&moxa_openlock); |
1da177e4c
|
1162 |
|
7c31bdb6b
|
1163 |
return tty_port_block_til_ready(&ch->port, tty, filp); |
1da177e4c
|
1164 1165 1166 1167 |
} static void moxa_close(struct tty_struct *tty, struct file *filp) { |
f176178ba
|
1168 |
struct moxa_port *ch = tty->driver_data; |
adc8d746c
|
1169 |
ch->cflag = tty->termios.c_cflag; |
f176178ba
|
1170 |
tty_port_close(&ch->port, tty, filp); |
1da177e4c
|
1171 1172 1173 1174 1175 |
} static int moxa_write(struct tty_struct *tty, const unsigned char *buf, int count) { |
b4173f457
|
1176 |
struct moxa_port *ch = tty->driver_data; |
0ad7c9af3
|
1177 |
unsigned long flags; |
b4173f457
|
1178 |
int len; |
1da177e4c
|
1179 |
|
1da177e4c
|
1180 |
if (ch == NULL) |
b4173f457
|
1181 |
return 0; |
33f0f88f1
|
1182 |
|
0ad7c9af3
|
1183 |
spin_lock_irqsave(&moxa_lock, flags); |
d450b5a01
|
1184 |
len = MoxaPortWriteData(tty, buf, count); |
0ad7c9af3
|
1185 |
spin_unlock_irqrestore(&moxa_lock, flags); |
1da177e4c
|
1186 |
|
a808ac0c4
|
1187 |
set_bit(LOWWAIT, &ch->statusflags); |
eaa95a8da
|
1188 |
return len; |
1da177e4c
|
1189 1190 1191 1192 |
} static int moxa_write_room(struct tty_struct *tty) { |
8f8ecbad0
|
1193 |
struct moxa_port *ch; |
1da177e4c
|
1194 1195 |
if (tty->stopped) |
eaa95a8da
|
1196 |
return 0; |
b4173f457
|
1197 |
ch = tty->driver_data; |
1da177e4c
|
1198 |
if (ch == NULL) |
eaa95a8da
|
1199 |
return 0; |
b4173f457
|
1200 |
return MoxaPortTxFree(ch); |
1da177e4c
|
1201 1202 1203 1204 |
} static void moxa_flush_buffer(struct tty_struct *tty) { |
b4173f457
|
1205 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1206 1207 1208 |
if (ch == NULL) return; |
b4173f457
|
1209 |
MoxaPortFlushData(ch, 1); |
1da177e4c
|
1210 1211 1212 1213 1214 |
tty_wakeup(tty); } static int moxa_chars_in_buffer(struct tty_struct *tty) { |
b4173f457
|
1215 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1216 |
int chars; |
1da177e4c
|
1217 |
|
b4173f457
|
1218 |
chars = MoxaPortTxQueue(ch); |
f710ebd7f
|
1219 |
if (chars) |
1da177e4c
|
1220 1221 1222 1223 |
/* * Make it possible to wakeup anything waiting for output * in tty_ioctl.c, etc. */ |
f710ebd7f
|
1224 |
set_bit(EMPTYWAIT, &ch->statusflags); |
eaa95a8da
|
1225 |
return chars; |
1da177e4c
|
1226 |
} |
60b33c133
|
1227 |
static int moxa_tiocmget(struct tty_struct *tty) |
1da177e4c
|
1228 |
{ |
8482bcd58
|
1229 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1230 |
int flag = 0, dtr, rts; |
b4173f457
|
1231 |
MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4c
|
1232 1233 1234 1235 |
if (dtr) flag |= TIOCM_DTR; if (rts) flag |= TIOCM_RTS; |
b4173f457
|
1236 |
dtr = MoxaPortLineStatus(ch); |
1da177e4c
|
1237 1238 1239 1240 1241 1242 1243 1244 |
if (dtr & 1) flag |= TIOCM_CTS; if (dtr & 2) flag |= TIOCM_DSR; if (dtr & 4) flag |= TIOCM_CD; return flag; } |
20b9d1771
|
1245 |
static int moxa_tiocmset(struct tty_struct *tty, |
1da177e4c
|
1246 1247 |
unsigned int set, unsigned int clear) { |
a8f5cda06
|
1248 |
struct moxa_port *ch; |
1da177e4c
|
1249 |
int dtr, rts; |
a8f5cda06
|
1250 1251 1252 1253 |
mutex_lock(&moxa_openlock); ch = tty->driver_data; if (!ch) { mutex_unlock(&moxa_openlock); |
74d7d97b9
|
1254 |
return -EINVAL; |
a8f5cda06
|
1255 |
} |
1da177e4c
|
1256 |
|
b4173f457
|
1257 |
MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4c
|
1258 1259 1260 1261 1262 1263 1264 1265 |
if (set & TIOCM_RTS) rts = 1; if (set & TIOCM_DTR) dtr = 1; if (clear & TIOCM_RTS) rts = 0; if (clear & TIOCM_DTR) dtr = 0; |
b4173f457
|
1266 |
MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda06
|
1267 |
mutex_unlock(&moxa_openlock); |
1da177e4c
|
1268 1269 |
return 0; } |
1da177e4c
|
1270 |
static void moxa_set_termios(struct tty_struct *tty, |
eaa95a8da
|
1271 |
struct ktermios *old_termios) |
1da177e4c
|
1272 |
{ |
eaa95a8da
|
1273 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1274 1275 1276 |
if (ch == NULL) return; |
db1acaa63
|
1277 |
moxa_set_tty_param(tty, old_termios); |
eaa95a8da
|
1278 |
if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
9de6a51fe
|
1279 |
wake_up_interruptible(&ch->port.open_wait); |
1da177e4c
|
1280 1281 1282 1283 |
} static void moxa_stop(struct tty_struct *tty) { |
eaa95a8da
|
1284 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1285 1286 1287 |
if (ch == NULL) return; |
b4173f457
|
1288 |
MoxaPortTxDisable(ch); |
a808ac0c4
|
1289 |
set_bit(TXSTOPPED, &ch->statusflags); |
1da177e4c
|
1290 1291 1292 1293 1294 |
} static void moxa_start(struct tty_struct *tty) { |
eaa95a8da
|
1295 |
struct moxa_port *ch = tty->driver_data; |
1da177e4c
|
1296 1297 1298 |
if (ch == NULL) return; |
58112dfbf
|
1299 |
if (!test_bit(TXSTOPPED, &ch->statusflags)) |
1da177e4c
|
1300 |
return; |
b4173f457
|
1301 |
MoxaPortTxEnable(ch); |
a808ac0c4
|
1302 |
clear_bit(TXSTOPPED, &ch->statusflags); |
1da177e4c
|
1303 1304 1305 1306 |
} static void moxa_hangup(struct tty_struct *tty) { |
a808ac0c4
|
1307 |
struct moxa_port *ch = tty->driver_data; |
f176178ba
|
1308 |
tty_port_hangup(&ch->port); |
1da177e4c
|
1309 |
} |
7bcf97d1d
|
1310 |
static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4c
|
1311 |
{ |
8482bcd58
|
1312 |
unsigned long flags; |
7bcf97d1d
|
1313 |
dcd = !!dcd; |
1da177e4c
|
1314 |
|
8482bcd58
|
1315 |
spin_lock_irqsave(&p->port.lock, flags); |
d450b5a01
|
1316 |
if (dcd != p->DCDState) { |
8482bcd58
|
1317 1318 |
p->DCDState = dcd; spin_unlock_irqrestore(&p->port.lock, flags); |
aa27a094e
|
1319 1320 |
if (!dcd) tty_port_tty_hangup(&p->port, true); |
7bcf97d1d
|
1321 |
} |
8482bcd58
|
1322 1323 |
else spin_unlock_irqrestore(&p->port.lock, flags); |
7bcf97d1d
|
1324 |
} |
1da177e4c
|
1325 |
|
7bcf97d1d
|
1326 1327 1328 |
static int moxa_poll_port(struct moxa_port *p, unsigned int handle, u16 __iomem *ip) { |
d450b5a01
|
1329 |
struct tty_struct *tty = tty_port_tty_get(&p->port); |
7bcf97d1d
|
1330 |
void __iomem *ofsAddr; |
d41861ca1
|
1331 |
unsigned int inited = tty_port_initialized(&p->port); |
7bcf97d1d
|
1332 1333 1334 |
u16 intr; if (tty) { |
a808ac0c4
|
1335 |
if (test_bit(EMPTYWAIT, &p->statusflags) && |
7bcf97d1d
|
1336 |
MoxaPortTxQueue(p) == 0) { |
a808ac0c4
|
1337 |
clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1d
|
1338 1339 |
tty_wakeup(tty); } |
a808ac0c4
|
1340 |
if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && |
7bcf97d1d
|
1341 |
MoxaPortTxQueue(p) <= WAKEUP_CHARS) { |
a808ac0c4
|
1342 |
clear_bit(LOWWAIT, &p->statusflags); |
7bcf97d1d
|
1343 1344 |
tty_wakeup(tty); } |
97ef38b82
|
1345 |
if (inited && !tty_throttled(tty) && |
7bcf97d1d
|
1346 1347 |
MoxaPortRxQueue(p) > 0) { /* RX */ MoxaPortReadData(p); |
6732c8bb8
|
1348 |
tty_schedule_flip(&p->port); |
7bcf97d1d
|
1349 1350 |
} } else { |
a808ac0c4
|
1351 |
clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1d
|
1352 |
MoxaPortFlushData(p, 0); /* flush RX */ |
1da177e4c
|
1353 |
} |
0bcc4caad
|
1354 |
|
7bcf97d1d
|
1355 |
if (!handle) /* nothing else to do */ |
0e0fd7d73
|
1356 |
goto put; |
7bcf97d1d
|
1357 1358 1359 |
intr = readw(ip); /* port irq status */ if (intr == 0) |
0e0fd7d73
|
1360 |
goto put; |
7bcf97d1d
|
1361 1362 1363 1364 1365 1366 1367 1368 |
writew(0, ip); /* ACK port */ ofsAddr = p->tableAddr; if (intr & IntrTx) /* disable tx intr */ writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat); if (!inited) |
0e0fd7d73
|
1369 |
goto put; |
7bcf97d1d
|
1370 1371 |
if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ |
92a19f9ce
|
1372 |
tty_insert_flip_char(&p->port, 0, TTY_BREAK); |
6732c8bb8
|
1373 |
tty_schedule_flip(&p->port); |
7bcf97d1d
|
1374 1375 1376 1377 |
} if (intr & IntrLine) moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); |
0e0fd7d73
|
1378 1379 |
put: tty_kref_put(tty); |
7bcf97d1d
|
1380 1381 1382 |
return 0; } |
24ed960ab
|
1383 |
static void moxa_poll(struct timer_list *unused) |
7bcf97d1d
|
1384 1385 1386 |
{ struct moxa_board_conf *brd; u16 __iomem *ip; |
2a5413416
|
1387 |
unsigned int card, port, served = 0; |
7bcf97d1d
|
1388 1389 |
spin_lock(&moxa_lock); |
1da177e4c
|
1390 |
for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1d
|
1391 1392 |
brd = &moxa_boards[card]; if (!brd->ready) |
1da177e4c
|
1393 |
continue; |
7bcf97d1d
|
1394 |
|
2a5413416
|
1395 |
served++; |
7bcf97d1d
|
1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 |
ip = NULL; if (readb(brd->intPend) == 0xff) ip = brd->intTable + readb(brd->intNdx); for (port = 0; port < brd->numPorts; port++) moxa_poll_port(&brd->ports[port], !!ip, ip + port); if (ip) writeb(0, brd->intPend); /* ACK */ if (moxaLowWaterChk) { struct moxa_port *p = brd->ports; for (port = 0; port < brd->numPorts; port++, p++) if (p->lowChkFlag) { p->lowChkFlag = 0; moxa_low_water_check(p->tableAddr); |
1da177e4c
|
1412 |
} |
1da177e4c
|
1413 1414 |
} } |
7bcf97d1d
|
1415 |
moxaLowWaterChk = 0; |
1da177e4c
|
1416 |
|
2a5413416
|
1417 1418 1419 |
if (served) mod_timer(&moxaTimer, jiffies + HZ / 50); spin_unlock(&moxa_lock); |
1da177e4c
|
1420 1421 1422 |
} /******************************************************************************/ |
db1acaa63
|
1423 |
static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4c
|
1424 |
{ |
adc8d746c
|
1425 |
register struct ktermios *ts = &tty->termios; |
eaa95a8da
|
1426 |
struct moxa_port *ch = tty->driver_data; |
db1acaa63
|
1427 |
int rts, cts, txflow, rxflow, xany, baud; |
1da177e4c
|
1428 |
|
1da177e4c
|
1429 1430 1431 1432 1433 1434 1435 1436 1437 |
rts = cts = txflow = rxflow = xany = 0; if (ts->c_cflag & CRTSCTS) rts = cts = 1; if (ts->c_iflag & IXON) txflow = 1; if (ts->c_iflag & IXOFF) rxflow = 1; if (ts->c_iflag & IXANY) xany = 1; |
db1acaa63
|
1438 |
|
b4173f457
|
1439 1440 |
MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); |
db1acaa63
|
1441 1442 1443 1444 |
if (baud == -1) baud = tty_termios_baud_rate(old_termios); /* Not put the baud rate into the termios data */ tty_encode_baud_rate(tty, baud, baud); |
1da177e4c
|
1445 |
} |
1da177e4c
|
1446 1447 |
/***************************************************************************** * Driver level functions: * |
1da177e4c
|
1448 |
*****************************************************************************/ |
1da177e4c
|
1449 |
|
b4173f457
|
1450 |
static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4c
|
1451 1452 |
{ void __iomem *ofsAddr; |
eaa95a8da
|
1453 |
if (mode < 0 || mode > 2) |
1da177e4c
|
1454 |
return; |
b4173f457
|
1455 |
ofsAddr = port->tableAddr; |
1da177e4c
|
1456 1457 |
moxafunc(ofsAddr, FC_FlushQueue, mode); if (mode != 1) { |
b4173f457
|
1458 |
port->lowChkFlag = 0; |
6f56b658b
|
1459 |
moxa_low_water_check(ofsAddr); |
1da177e4c
|
1460 1461 |
} } |
1da177e4c
|
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 |
/* * Moxa Port Number Description: * * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, * the port number using in MOXA driver functions will be 0 to 31 for * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 * to 127 for fourth. For example, if you setup three MOXA boards, * first board is C218, second board is C320-16 and third board is * C320-32. The port number of first board (C218 - 8 ports) is from * 0 to 7. The port number of second board (C320 - 16 ports) is form * 32 to 47. The port number of third board (C320 - 32 ports) is from * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to * 127 will be invalid. * * * Moxa Functions Description: * * Function 1: Driver initialization routine, this routine must be * called when initialized driver. * Syntax: * void MoxaDriverInit(); * * * Function 2: Moxa driver private IOCTL command processing. * Syntax: * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); * * unsigned int cmd : IOCTL command * unsigned long arg : IOCTL argument * int port : port number (0 - 127) * * return: 0 (OK) * -EINVAL * -ENOIOCTLCMD * * |
1da177e4c
|
1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 |
* Function 6: Enable this port to start Tx/Rx data. * Syntax: * void MoxaPortEnable(int port); * int port : port number (0 - 127) * * * Function 7: Disable this port * Syntax: * void MoxaPortDisable(int port); * int port : port number (0 - 127) * * |
1da177e4c
|
1510 1511 |
* Function 10: Setting baud rate of this port. * Syntax: |
08d01c792
|
1512 |
* speed_t MoxaPortSetBaud(int port, speed_t baud); |
1da177e4c
|
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 |
* int port : port number (0 - 127) * long baud : baud rate (50 - 115200) * * return: 0 : this port is invalid or baud < 50 * 50 - 115200 : the real baud rate set to the port, if * the argument baud is large than maximun * available baud rate, the real setting * baud rate will be the maximun baud rate. * * |
1da177e4c
|
1523 1524 |
* Function 12: Configure the port. * Syntax: |
606d099cd
|
1525 |
* int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4c
|
1526 |
* int port : port number (0 - 127) |
606d099cd
|
1527 |
* struct ktermios * termio : termio structure pointer |
c7bce3097
|
1528 |
* speed_t baud : baud rate |
1da177e4c
|
1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 |
* * return: -1 : this port is invalid or termio == NULL * 0 : setting O.K. * * * Function 13: Get the DTR/RTS state of this port. * Syntax: * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * int port : port number (0 - 127) * int * dtrState : pointer to INT to receive the current DTR * state. (if NULL, this function will not * write to this address) * int * rtsState : pointer to INT to receive the current RTS * state. (if NULL, this function will not * write to this address) * * return: -1 : this port is invalid * 0 : O.K. * * * Function 14: Setting the DTR/RTS output state of this port. * Syntax: * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); * int port : port number (0 - 127) * int dtrState : DTR output state (0: off, 1: on) * int rtsState : RTS output state (0: off, 1: on) * * * Function 15: Setting the flow control of this port. * Syntax: * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, * int txFlow,int xany); * int port : port number (0 - 127) * int rtsFlow : H/W RTS flow control (0: no, 1: yes) * int ctsFlow : H/W CTS flow control (0: no, 1: yes) * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) * int xany : S/W XANY flow control (0: no, 1: yes) * * * Function 16: Get ths line status of this port * Syntax: * int MoxaPortLineStatus(int port); * int port : port number (0 - 127) * * return: Bit 0 - CTS state (0: off, 1: on) * Bit 1 - DSR state (0: off, 1: on) * Bit 2 - DCD state (0: off, 1: on) * * |
1da177e4c
|
1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 |
* Function 19: Flush the Rx/Tx buffer data of this port. * Syntax: * void MoxaPortFlushData(int port, int mode); * int port : port number (0 - 127) * int mode * 0 : flush the Rx buffer * 1 : flush the Tx buffer * 2 : flush the Rx and Tx buffer * * * Function 20: Write data. * Syntax: * int MoxaPortWriteData(int port, unsigned char * buffer, int length); * int port : port number (0 - 127) * unsigned char * buffer : pointer to write data buffer. * int length : write data length * * return: 0 - length : real write data length * * * Function 21: Read data. * Syntax: |
33f0f88f1
|
1601 |
* int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4c
|
1602 |
* int port : port number (0 - 127) |
33f0f88f1
|
1603 |
* struct tty_struct *tty : tty for data |
1da177e4c
|
1604 1605 1606 1607 |
* * return: 0 - length : real read data length * * |
1da177e4c
|
1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 |
* Function 24: Get the Tx buffer current queued data bytes * Syntax: * int MoxaPortTxQueue(int port); * int port : port number (0 - 127) * * return: .. : Tx buffer current queued data bytes * * * Function 25: Get the Tx buffer current free space * Syntax: * int MoxaPortTxFree(int port); * int port : port number (0 - 127) * * return: .. : Tx buffer current free space * * * Function 26: Get the Rx buffer current queued data bytes * Syntax: * int MoxaPortRxQueue(int port); * int port : port number (0 - 127) * * return: .. : Rx buffer current queued data bytes * * |
1da177e4c
|
1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 |
* Function 28: Disable port data transmission. * Syntax: * void MoxaPortTxDisable(int port); * int port : port number (0 - 127) * * * Function 29: Enable port data transmission. * Syntax: * void MoxaPortTxEnable(int port); * int port : port number (0 - 127) * * |
1da177e4c
|
1644 1645 1646 1647 1648 1649 1650 1651 |
* Function 31: Get the received BREAK signal count and reset it. * Syntax: * int MoxaPortResetBrkCnt(int port); * int port : port number (0 - 127) * * return: 0 - .. : BREAK signal count * * |
1da177e4c
|
1652 |
*/ |
1da177e4c
|
1653 |
|
b4173f457
|
1654 |
static void MoxaPortEnable(struct moxa_port *port) |
1da177e4c
|
1655 1656 |
{ void __iomem *ofsAddr; |
eaa95a8da
|
1657 |
u16 lowwater = 512; |
1da177e4c
|
1658 |
|
b4173f457
|
1659 |
ofsAddr = port->tableAddr; |
1da177e4c
|
1660 |
writew(lowwater, ofsAddr + Low_water); |
08d01c792
|
1661 |
if (MOXA_IS_320(port->board)) |
1da177e4c
|
1662 |
moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
eaa95a8da
|
1663 1664 1665 |
else writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); |
1da177e4c
|
1666 1667 1668 1669 1670 1671 1672 |
moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); moxafunc(ofsAddr, FC_FlushQueue, 2); moxafunc(ofsAddr, FC_EnableCH, Magic_code); MoxaPortLineStatus(port); } |
b4173f457
|
1673 |
static void MoxaPortDisable(struct moxa_port *port) |
1da177e4c
|
1674 |
{ |
b4173f457
|
1675 |
void __iomem *ofsAddr = port->tableAddr; |
1da177e4c
|
1676 1677 1678 1679 1680 1681 |
moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); writew(0, ofsAddr + HostStat); moxafunc(ofsAddr, FC_DisableCH, Magic_code); } |
08d01c792
|
1682 |
static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
1da177e4c
|
1683 |
{ |
08d01c792
|
1684 1685 1686 |
void __iomem *ofsAddr = port->tableAddr; unsigned int clock, val; speed_t max; |
1da177e4c
|
1687 |
|
08d01c792
|
1688 1689 |
max = MOXA_IS_320(port->board) ? 460800 : 921600; if (baud < 50) |
eaa95a8da
|
1690 |
return 0; |
1da177e4c
|
1691 1692 |
if (baud > max) baud = max; |
08d01c792
|
1693 |
clock = 921600; |
1da177e4c
|
1694 1695 1696 |
val = clock / baud; moxafunc(ofsAddr, FC_SetBaud, val); baud = clock / val; |
eaa95a8da
|
1697 |
return baud; |
1da177e4c
|
1698 |
} |
b4173f457
|
1699 1700 |
static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, speed_t baud) |
1da177e4c
|
1701 1702 |
{ void __iomem *ofsAddr; |
1da177e4c
|
1703 |
tcflag_t mode = 0; |
b4173f457
|
1704 |
ofsAddr = port->tableAddr; |
1da177e4c
|
1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 |
mode = termio->c_cflag & CSIZE; if (mode == CS5) mode = MX_CS5; else if (mode == CS6) mode = MX_CS6; else if (mode == CS7) mode = MX_CS7; else if (mode == CS8) mode = MX_CS8; if (termio->c_cflag & CSTOPB) { if (mode == MX_CS5) mode |= MX_STOP15; else mode |= MX_STOP2; } else mode |= MX_STOP1; if (termio->c_cflag & PARENB) { |
d8dcbdd08
|
1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 |
if (termio->c_cflag & PARODD) { if (termio->c_cflag & CMSPAR) mode |= MX_PARMARK; else mode |= MX_PARODD; } else { if (termio->c_cflag & CMSPAR) mode |= MX_PARSPACE; else mode |= MX_PAREVEN; } |
1da177e4c
|
1736 1737 |
} else mode |= MX_PARNONE; |
eaa95a8da
|
1738 |
moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
1da177e4c
|
1739 |
|
08d01c792
|
1740 1741 |
if (MOXA_IS_320(port->board) && baud >= 921600) return -1; |
db1acaa63
|
1742 |
baud = MoxaPortSetBaud(port, baud); |
1da177e4c
|
1743 1744 |
if (termio->c_iflag & (IXON | IXOFF | IXANY)) { |
f5c5a36d2
|
1745 |
spin_lock_irq(&moxafunc_lock); |
1da177e4c
|
1746 1747 1748 |
writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); writeb(FC_SetXonXoff, ofsAddr + FuncCode); |
6f56b658b
|
1749 |
moxa_wait_finish(ofsAddr); |
a808ac0c4
|
1750 |
spin_unlock_irq(&moxafunc_lock); |
1da177e4c
|
1751 1752 |
} |
eaa95a8da
|
1753 |
return baud; |
1da177e4c
|
1754 |
} |
b4173f457
|
1755 1756 |
static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, int *rtsState) |
1da177e4c
|
1757 |
{ |
b4173f457
|
1758 1759 1760 1761 |
if (dtrState) *dtrState = !!(port->lineCtrl & DTR_ON); if (rtsState) *rtsState = !!(port->lineCtrl & RTS_ON); |
eaa95a8da
|
1762 |
return 0; |
1da177e4c
|
1763 |
} |
b4173f457
|
1764 |
static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4c
|
1765 |
{ |
eaa95a8da
|
1766 |
u8 mode = 0; |
1da177e4c
|
1767 |
|
1da177e4c
|
1768 1769 1770 1771 |
if (dtr) mode |= DTR_ON; if (rts) mode |= RTS_ON; |
b4173f457
|
1772 1773 |
port->lineCtrl = mode; moxafunc(port->tableAddr, FC_LineControl, mode); |
1da177e4c
|
1774 |
} |
b4173f457
|
1775 1776 |
static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, int txflow, int rxflow, int txany) |
1da177e4c
|
1777 |
{ |
b4173f457
|
1778 |
int mode = 0; |
1da177e4c
|
1779 |
|
1da177e4c
|
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 |
if (rts) mode |= RTS_FlowCtl; if (cts) mode |= CTS_FlowCtl; if (txflow) mode |= Tx_FlowCtl; if (rxflow) mode |= Rx_FlowCtl; if (txany) mode |= IXM_IXANY; |
b4173f457
|
1790 |
moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4c
|
1791 |
} |
b4173f457
|
1792 |
static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4c
|
1793 1794 1795 |
{ void __iomem *ofsAddr; int val; |
b4173f457
|
1796 |
ofsAddr = port->tableAddr; |
f5c5a36d2
|
1797 1798 1799 |
if (MOXA_IS_320(port->board)) val = moxafuncret(ofsAddr, FC_LineStatus, 0); else |
1da177e4c
|
1800 |
val = readw(ofsAddr + FlagStat) >> 4; |
1da177e4c
|
1801 |
val &= 0x0B; |
7bcf97d1d
|
1802 |
if (val & 8) |
1da177e4c
|
1803 |
val |= 4; |
7bcf97d1d
|
1804 |
moxa_new_dcdstate(port, val & 8); |
1da177e4c
|
1805 |
val &= 7; |
7bcf97d1d
|
1806 |
return val; |
1da177e4c
|
1807 |
} |
d450b5a01
|
1808 |
static int MoxaPortWriteData(struct tty_struct *tty, |
2108eba5c
|
1809 |
const unsigned char *buffer, int len) |
1da177e4c
|
1810 |
{ |
d450b5a01
|
1811 |
struct moxa_port *port = tty->driver_data; |
1da177e4c
|
1812 |
void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5c
|
1813 1814 1815 |
unsigned int c, total; u16 head, tail, tx_mask, spage, epage; u16 pageno, pageofs, bufhead; |
1da177e4c
|
1816 |
|
b4173f457
|
1817 1818 |
ofsAddr = port->tableAddr; baseAddr = port->board->basemem; |
1da177e4c
|
1819 1820 1821 1822 1823 |
tx_mask = readw(ofsAddr + TX_mask); spage = readw(ofsAddr + Page_txb); epage = readw(ofsAddr + EndPage_txb); tail = readw(ofsAddr + TXwptr); head = readw(ofsAddr + TXrptr); |
2108eba5c
|
1824 |
c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4c
|
1825 1826 |
if (c > len) c = len; |
9de6a51fe
|
1827 |
moxaLog.txcnt[port->port.tty->index] += c; |
1da177e4c
|
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 |
total = c; if (spage == epage) { bufhead = readw(ofsAddr + Ofs_txb); writew(spage, baseAddr + Control_reg); while (c > 0) { if (head > tail) len = head - tail - 1; else len = tx_mask + 1 - tail; len = (c > len) ? len : c; ofs = baseAddr + DynPage_addr + bufhead + tail; |
2108eba5c
|
1839 1840 |
memcpy_toio(ofs, buffer, len); buffer += len; |
1da177e4c
|
1841 1842 1843 |
tail = (tail + len) & tx_mask; c -= len; } |
1da177e4c
|
1844 |
} else { |
1da177e4c
|
1845 1846 |
pageno = spage + (tail >> 13); pageofs = tail & Page_mask; |
2108eba5c
|
1847 1848 1849 1850 |
while (c > 0) { len = Page_size - pageofs; if (len > c) len = c; |
1da177e4c
|
1851 1852 |
writeb(pageno, baseAddr + Control_reg); ofs = baseAddr + DynPage_addr + pageofs; |
2108eba5c
|
1853 1854 |
memcpy_toio(ofs, buffer, len); buffer += len; |
1da177e4c
|
1855 1856 1857 |
if (++pageno == epage) pageno = spage; pageofs = 0; |
2108eba5c
|
1858 1859 1860 |
c -= len; } tail = (tail + total) & tx_mask; |
1da177e4c
|
1861 |
} |
2108eba5c
|
1862 |
writew(tail, ofsAddr + TXwptr); |
1da177e4c
|
1863 |
writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5c
|
1864 |
return total; |
1da177e4c
|
1865 |
} |
7bcf97d1d
|
1866 |
static int MoxaPortReadData(struct moxa_port *port) |
1da177e4c
|
1867 |
{ |
9de6a51fe
|
1868 |
struct tty_struct *tty = port->port.tty; |
2108eba5c
|
1869 |
unsigned char *dst; |
1da177e4c
|
1870 |
void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5c
|
1871 1872 1873 |
unsigned int count, len, total; u16 tail, rx_mask, spage, epage; u16 pageno, pageofs, bufhead, head; |
1da177e4c
|
1874 |
|
b4173f457
|
1875 1876 |
ofsAddr = port->tableAddr; baseAddr = port->board->basemem; |
1da177e4c
|
1877 1878 1879 1880 1881 |
head = readw(ofsAddr + RXrptr); tail = readw(ofsAddr + RXwptr); rx_mask = readw(ofsAddr + RX_mask); spage = readw(ofsAddr + Page_rxb); epage = readw(ofsAddr + EndPage_rxb); |
2108eba5c
|
1882 |
count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4c
|
1883 |
if (count == 0) |
33f0f88f1
|
1884 |
return 0; |
1da177e4c
|
1885 |
|
33f0f88f1
|
1886 |
total = count; |
7bcf97d1d
|
1887 |
moxaLog.rxcnt[tty->index] += total; |
1da177e4c
|
1888 1889 1890 1891 |
if (spage == epage) { bufhead = readw(ofsAddr + Ofs_rxb); writew(spage, baseAddr + Control_reg); while (count > 0) { |
1da177e4c
|
1892 |
ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5c
|
1893 1894 |
len = (tail >= head) ? (tail - head) : (rx_mask + 1 - head); |
2f6933571
|
1895 |
len = tty_prepare_flip_string(&port->port, &dst, |
2108eba5c
|
1896 1897 |
min(len, count)); memcpy_fromio(dst, ofs, len); |
1da177e4c
|
1898 1899 1900 |
head = (head + len) & rx_mask; count -= len; } |
1da177e4c
|
1901 |
} else { |
1da177e4c
|
1902 1903 |
pageno = spage + (head >> 13); pageofs = head & Page_mask; |
2108eba5c
|
1904 |
while (count > 0) { |
1da177e4c
|
1905 1906 |
writew(pageno, baseAddr + Control_reg); ofs = baseAddr + DynPage_addr + pageofs; |
2f6933571
|
1907 |
len = tty_prepare_flip_string(&port->port, &dst, |
2108eba5c
|
1908 1909 1910 1911 1912 1913 |
min(Page_size - pageofs, count)); memcpy_fromio(dst, ofs, len); count -= len; pageofs = (pageofs + len) & Page_mask; if (pageofs == 0 && ++pageno == epage) |
1da177e4c
|
1914 |
pageno = spage; |
2108eba5c
|
1915 1916 |
} head = (head + total) & rx_mask; |
1da177e4c
|
1917 |
} |
2108eba5c
|
1918 1919 |
writew(head, ofsAddr + RXrptr); if (readb(ofsAddr + FlagStat) & Xoff_state) { |
1da177e4c
|
1920 |
moxaLowWaterChk = 1; |
b4173f457
|
1921 |
port->lowChkFlag = 1; |
1da177e4c
|
1922 |
} |
2108eba5c
|
1923 |
return total; |
1da177e4c
|
1924 |
} |
b4173f457
|
1925 |
static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4c
|
1926 |
{ |
b4173f457
|
1927 |
void __iomem *ofsAddr = port->tableAddr; |
2108eba5c
|
1928 |
u16 rptr, wptr, mask; |
1da177e4c
|
1929 |
|
1da177e4c
|
1930 1931 1932 |
rptr = readw(ofsAddr + TXrptr); wptr = readw(ofsAddr + TXwptr); mask = readw(ofsAddr + TX_mask); |
2108eba5c
|
1933 |
return (wptr - rptr) & mask; |
1da177e4c
|
1934 |
} |
b4173f457
|
1935 |
static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4c
|
1936 |
{ |
b4173f457
|
1937 |
void __iomem *ofsAddr = port->tableAddr; |
2108eba5c
|
1938 |
u16 rptr, wptr, mask; |
1da177e4c
|
1939 |
|
1da177e4c
|
1940 1941 1942 |
rptr = readw(ofsAddr + TXrptr); wptr = readw(ofsAddr + TXwptr); mask = readw(ofsAddr + TX_mask); |
2108eba5c
|
1943 |
return mask - ((wptr - rptr) & mask); |
1da177e4c
|
1944 |
} |
b4173f457
|
1945 |
static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4c
|
1946 |
{ |
b4173f457
|
1947 |
void __iomem *ofsAddr = port->tableAddr; |
2108eba5c
|
1948 |
u16 rptr, wptr, mask; |
1da177e4c
|
1949 |
|
1da177e4c
|
1950 1951 1952 |
rptr = readw(ofsAddr + RXrptr); wptr = readw(ofsAddr + RXwptr); mask = readw(ofsAddr + RX_mask); |
2108eba5c
|
1953 |
return (wptr - rptr) & mask; |
1da177e4c
|
1954 |
} |
b4173f457
|
1955 |
static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4c
|
1956 |
{ |
b4173f457
|
1957 |
moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4c
|
1958 |
} |
b4173f457
|
1959 |
static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4c
|
1960 |
{ |
b4173f457
|
1961 |
moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4c
|
1962 |
} |
1c729ab15
|
1963 1964 |
static int moxa_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
1da177e4c
|
1965 |
{ |
1c729ab15
|
1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 |
struct moxa_port *info = tty->driver_data; if (tty->index == MAX_PORTS) return -EINVAL; if (!info) return -ENODEV; mutex_lock(&info->port.mutex); ss->type = info->type, ss->line = info->port.tty->index, ss->flags = info->port.flags, ss->baud_base = 921600, ss->close_delay = info->port.close_delay; mutex_unlock(&info->port.mutex); return 0; |
1da177e4c
|
1980 |
} |
1c729ab15
|
1981 1982 |
static int moxa_set_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
1da177e4c
|
1983 |
{ |
1c729ab15
|
1984 |
struct moxa_port *info = tty->driver_data; |
1da177e4c
|
1985 |
|
1c729ab15
|
1986 1987 1988 1989 |
if (tty->index == MAX_PORTS) return -EINVAL; if (!info) return -ENODEV; |
1da177e4c
|
1990 |
|
1c729ab15
|
1991 1992 1993 |
if (ss->irq != 0 || ss->port != 0 || ss->custom_divisor != 0 || ss->baud_base != 921600) |
eaa95a8da
|
1994 |
return -EPERM; |
1da177e4c
|
1995 |
|
1c729ab15
|
1996 |
mutex_lock(&info->port.mutex); |
1da177e4c
|
1997 |
if (!capable(CAP_SYS_ADMIN)) { |
1c729ab15
|
1998 1999 2000 |
if (((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&info->port.mutex); |
eaa95a8da
|
2001 |
return -EPERM; |
1c729ab15
|
2002 2003 2004 |
} } info->port.close_delay = ss->close_delay * HZ / 100; |
1da177e4c
|
2005 |
|
1c729ab15
|
2006 |
MoxaSetFifo(info, ss->type == PORT_16550A); |
1da177e4c
|
2007 |
|
1c729ab15
|
2008 2009 |
info->type = ss->type; mutex_unlock(&info->port.mutex); |
eaa95a8da
|
2010 |
return 0; |
1da177e4c
|
2011 2012 2013 2014 2015 2016 2017 |
} /***************************************************************************** * Static local functions: * *****************************************************************************/ |
1da177e4c
|
2018 |
|
b4173f457
|
2019 |
static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4c
|
2020 |
{ |
b4173f457
|
2021 |
void __iomem *ofsAddr = port->tableAddr; |
1da177e4c
|
2022 2023 2024 2025 2026 2027 2028 2029 2030 |
if (!enable) { moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); } else { moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); } } |