LCOV - code coverage report
Current view: top level - include/linux - serial.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 2 2 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : /*
       2             :  * include/linux/serial.h
       3             :  *
       4             :  * Copyright (C) 1992 by Theodore Ts'o.
       5             :  * 
       6             :  * Redistribution of this file is permitted under the terms of the GNU 
       7             :  * Public License (GPL)
       8             :  */
       9             : 
      10             : #ifndef _LINUX_SERIAL_H
      11             : #define _LINUX_SERIAL_H
      12             : 
      13             : #include <linux/types.h>
      14             : 
      15             : #ifdef __KERNEL__
      16             : #include <asm/page.h>
      17             : 
      18             : /*
      19             :  * Counters of the input lines (CTS, DSR, RI, CD) interrupts
      20             :  */
      21             : 
      22             : struct async_icount {
      23             :         __u32   cts, dsr, rng, dcd, tx, rx;
      24             :         __u32   frame, parity, overrun, brk;
      25             :         __u32   buf_overrun;
      26             : };
      27           1 : 
      28             : /*
      29             :  * The size of the serial xmit buffer is 1 page, or 4096 bytes
      30             :  */
      31             : #define SERIAL_XMIT_SIZE PAGE_SIZE
      32             : 
      33             : #endif
      34             : 
      35             : struct serial_struct {
      36             :         int     type;
      37             :         int     line;
      38             :         unsigned int    port;
      39             :         int     irq;
      40             :         int     flags;
      41             :         int     xmit_fifo_size;
      42             :         int     custom_divisor;
      43             :         int     baud_base;
      44             :         unsigned short  close_delay;
      45             :         char    io_type;
      46             :         char    reserved_char[1];
      47             :         int     hub6;
      48             :         unsigned short  closing_wait; /* time to wait before closing */
      49             :         unsigned short  closing_wait2; /* no longer used... */
      50             :         unsigned char   *iomem_base;
      51             :         unsigned short  iomem_reg_shift;
      52             :         unsigned int    port_high;
      53             :         unsigned long   iomap_base;     /* cookie passed into ioremap */
      54             : };
      55             : 
      56             : /*
      57             :  * For the close wait times, 0 means wait forever for serial port to
      58             :  * flush its output.  65535 means don't wait at all.
      59             :  */
      60             : #define ASYNC_CLOSING_WAIT_INF  0
      61             : #define ASYNC_CLOSING_WAIT_NONE 65535
      62             : 
      63             : /*
      64             :  * These are the supported serial types.
      65             :  */
      66             : #define PORT_UNKNOWN    0
      67             : #define PORT_8250       1
      68             : #define PORT_16450      2
      69             : #define PORT_16550      3
      70             : #define PORT_16550A     4
      71             : #define PORT_CIRRUS     5       /* usurped by cyclades.c */
      72             : #define PORT_16650      6
      73             : #define PORT_16650V2    7
      74             : #define PORT_16750      8
      75             : #define PORT_STARTECH   9       /* usurped by cyclades.c */
      76             : #define PORT_16C950     10      /* Oxford Semiconductor */
      77             : #define PORT_16654      11
      78             : #define PORT_16850      12
      79             : #define PORT_RSA        13      /* RSA-DV II/S card */
      80             : #define PORT_MAX        13
      81             : 
      82             : #define SERIAL_IO_PORT  0
      83             : #define SERIAL_IO_HUB6  1
      84             : #define SERIAL_IO_MEM   2
      85             : 
      86             : struct serial_uart_config {
      87             :         char    *name;
      88             :         int     dfl_xmit_fifo_size;
      89             :         int     flags;
      90             : };
      91             : 
      92             : #define UART_CLEAR_FIFO         0x01
      93             : #define UART_USE_FIFO           0x02
      94             : #define UART_STARTECH           0x04
      95             : #define UART_NATSEMI            0x08
      96             : 
      97             : /*
      98             :  * Definitions for async_struct (and serial_struct) flags field
      99             :  *
     100             :  * Define ASYNCB_* for convenient use with {test,set,clear}_bit.
     101             :  */
     102             : #define ASYNCB_HUP_NOTIFY        0 /* Notify getty on hangups and closes
     103             :                                     * on the callout port */
     104             : #define ASYNCB_FOURPORT          1 /* Set OU1, OUT2 per AST Fourport settings */
     105             : #define ASYNCB_SAK               2 /* Secure Attention Key (Orange book) */
     106             : #define ASYNCB_SPLIT_TERMIOS     3 /* Separate termios for dialin/callout */
     107             : #define ASYNCB_SPD_HI            4 /* Use 56000 instead of 38400 bps */
     108             : #define ASYNCB_SPD_VHI           5 /* Use 115200 instead of 38400 bps */
     109             : #define ASYNCB_SKIP_TEST         6 /* Skip UART test during autoconfiguration */
     110             : #define ASYNCB_AUTO_IRQ          7 /* Do automatic IRQ during
     111             :                                     * autoconfiguration */
     112             : #define ASYNCB_SESSION_LOCKOUT   8 /* Lock out cua opens based on session */
     113             : #define ASYNCB_PGRP_LOCKOUT      9 /* Lock out cua opens based on pgrp */
     114             : #define ASYNCB_CALLOUT_NOHUP    10 /* Don't do hangups for cua device */
     115             : #define ASYNCB_HARDPPS_CD       11 /* Call hardpps when CD goes high  */
     116             : #define ASYNCB_SPD_SHI          12 /* Use 230400 instead of 38400 bps */
     117             : #define ASYNCB_LOW_LATENCY      13 /* Request low latency behaviour */
     118             : #define ASYNCB_BUGGY_UART       14 /* This is a buggy UART, skip some safety
     119             :                                     * checks.  Note: can be dangerous! */
     120             : #define ASYNCB_AUTOPROBE        15 /* Port was autoprobed by PCI or PNP code */
     121             : #define ASYNCB_LAST_USER        15
     122             : 
     123             : /* Internal flags used only by kernel */
     124             : #define ASYNCB_INITIALIZED      31 /* Serial port was initialized */
     125             : #define ASYNCB_SUSPENDED        30 /* Serial port is suspended */
     126             : #define ASYNCB_NORMAL_ACTIVE    29 /* Normal device is active */
     127             : #define ASYNCB_BOOT_AUTOCONF    28 /* Autoconfigure port on bootup */
     128             : #define ASYNCB_CLOSING          27 /* Serial port is closing */
     129             : #define ASYNCB_CTS_FLOW         26 /* Do CTS flow control */
     130             : #define ASYNCB_CHECK_CD         25 /* i.e., CLOCAL */
     131             : #define ASYNCB_SHARE_IRQ        24 /* for multifunction cards, no longer used */
     132             : #define ASYNCB_CONS_FLOW        23 /* flow control for console  */
     133             : #define ASYNCB_BOOT_ONLYMCA     22 /* Probe only if MCA bus */
     134             : #define ASYNCB_FIRST_KERNEL     22
     135             : 
     136             : #define ASYNC_HUP_NOTIFY        (1U << ASYNCB_HUP_NOTIFY)
     137             : #define ASYNC_SUSPENDED         (1U << ASYNCB_SUSPENDED)
     138             : #define ASYNC_FOURPORT          (1U << ASYNCB_FOURPORT)
     139             : #define ASYNC_SAK               (1U << ASYNCB_SAK)
     140             : #define ASYNC_SPLIT_TERMIOS     (1U << ASYNCB_SPLIT_TERMIOS)
     141             : #define ASYNC_SPD_HI            (1U << ASYNCB_SPD_HI)
     142             : #define ASYNC_SPD_VHI           (1U << ASYNCB_SPD_VHI)
     143             : #define ASYNC_SKIP_TEST         (1U << ASYNCB_SKIP_TEST)
     144             : #define ASYNC_AUTO_IRQ          (1U << ASYNCB_AUTO_IRQ)
     145             : #define ASYNC_SESSION_LOCKOUT   (1U << ASYNCB_SESSION_LOCKOUT)
     146             : #define ASYNC_PGRP_LOCKOUT      (1U << ASYNCB_PGRP_LOCKOUT)
     147             : #define ASYNC_CALLOUT_NOHUP     (1U << ASYNCB_CALLOUT_NOHUP)
     148             : #define ASYNC_HARDPPS_CD        (1U << ASYNCB_HARDPPS_CD)
     149             : #define ASYNC_SPD_SHI           (1U << ASYNCB_SPD_SHI)
     150             : #define ASYNC_LOW_LATENCY       (1U << ASYNCB_LOW_LATENCY)
     151             : #define ASYNC_BUGGY_UART        (1U << ASYNCB_BUGGY_UART)
     152             : #define ASYNC_AUTOPROBE         (1U << ASYNCB_AUTOPROBE)
     153             : 
     154             : #define ASYNC_FLAGS             ((1U << ASYNCB_LAST_USER) - 1)
     155             : #define ASYNC_USR_MASK          (ASYNC_SPD_HI|ASYNC_SPD_VHI| \
     156             :                 ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY)
     157             : #define ASYNC_SPD_CUST          (ASYNC_SPD_HI|ASYNC_SPD_VHI)
     158             : #define ASYNC_SPD_WARP          (ASYNC_SPD_HI|ASYNC_SPD_SHI)
     159             : #define ASYNC_SPD_MASK          (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
     160             : 
     161             : #define ASYNC_INITIALIZED       (1U << ASYNCB_INITIALIZED)
     162             : #define ASYNC_NORMAL_ACTIVE     (1U << ASYNCB_NORMAL_ACTIVE)
     163             : #define ASYNC_BOOT_AUTOCONF     (1U << ASYNCB_BOOT_AUTOCONF)
     164             : #define ASYNC_CLOSING           (1U << ASYNCB_CLOSING)
     165             : #define ASYNC_CTS_FLOW          (1U << ASYNCB_CTS_FLOW)
     166             : #define ASYNC_CHECK_CD          (1U << ASYNCB_CHECK_CD)
     167             : #define ASYNC_SHARE_IRQ         (1U << ASYNCB_SHARE_IRQ)
     168             : #define ASYNC_CONS_FLOW         (1U << ASYNCB_CONS_FLOW)
     169             : #define ASYNC_BOOT_ONLYMCA      (1U << ASYNCB_BOOT_ONLYMCA)
     170             : #define ASYNC_INTERNAL_FLAGS    (~((1U << ASYNCB_FIRST_KERNEL) - 1))
     171             : 
     172             : /*
     173             :  * Multiport serial configuration structure --- external structure
     174             :  */
     175             : struct serial_multiport_struct {
     176             :         int             irq;
     177             :         int             port1;
     178             :         unsigned char   mask1, match1;
     179             :         int             port2;
     180             :         unsigned char   mask2, match2;
     181             :         int             port3;
     182             :         unsigned char   mask3, match3;
     183             :         int             port4;
     184             :         unsigned char   mask4, match4;
     185             :         int             port_monitor;
     186             :         int     reserved[32];
     187             : };
     188             : 
     189             : /*
     190             :  * Serial input interrupt line counters -- external structure
     191             :  * Four lines can interrupt: CTS, DSR, RI, DCD
     192             :  */
     193             : struct serial_icounter_struct {
     194             :         int cts, dsr, rng, dcd;
     195             :         int rx, tx;
     196             :         int frame, overrun, parity, brk;
     197             :         int buf_overrun;
     198             :         int reserved[9];
     199             : };
     200             : 
     201             : /*
     202             :  * Serial interface for controlling RS485 settings on chips with suitable
     203             :  * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your
     204             :  * platform. The set function returns the new state, with any unsupported bits
     205             :  * reverted appropriately.
     206             :  */
     207             : 
     208             : struct serial_rs485 {
     209             :         __u32   flags;                  /* RS485 feature flags */
     210             : #define SER_RS485_ENABLED               (1 << 0)
     211             : #define SER_RS485_RTS_ON_SEND           (1 << 1)
     212             : #define SER_RS485_RTS_AFTER_SEND        (1 << 2)
     213             :         __u32   delay_rts_before_send;  /* Milliseconds */
     214             :         __u32   padding[6];             /* Memory is cheap, new structs
     215             :                                            are a royal PITA .. */
     216           1 : };
     217             : 
     218             : #ifdef __KERNEL__
     219             : #include <linux/compiler.h>
     220             : 
     221             : #endif /* __KERNEL__ */
     222             : #endif /* _LINUX_SERIAL_H */

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