LCOV - code coverage report
Current view: top level - drivers/serial - 8250.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : /*
       2             :  *  linux/drivers/char/8250.h
       3             :  *
       4             :  *  Driver for 8250/16550-type serial ports
       5             :  *
       6             :  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
       7             :  *
       8             :  *  Copyright (C) 2001 Russell King.
       9             :  *
      10             :  * This program is free software; you can redistribute it and/or modify
      11             :  * it under the terms of the GNU General Public License as published by
      12             :  * the Free Software Foundation; either version 2 of the License, or
      13             :  * (at your option) any later version.
      14             :  */
      15             : 
      16             : #include <linux/serial_8250.h>
      17             : 
      18             : struct old_serial_port {
      19             :         unsigned int uart;
      20             :         unsigned int baud_base;
      21             :         unsigned int port;
      22             :         unsigned int irq;
      23             :         unsigned int flags;
      24             :         unsigned char hub6;
      25             :         unsigned char io_type;
      26             :         unsigned char *iomem_base;
      27             :         unsigned short iomem_reg_shift;
      28             :         unsigned long irqflags;
      29             : };
      30           1 : 
      31             : /*
      32             :  * This replaces serial_uart_config in include/linux/serial.h
      33             :  */
      34             : struct serial8250_config {
      35             :         const char      *name;
      36             :         unsigned short  fifo_size;
      37             :         unsigned short  tx_loadsz;
      38             :         unsigned char   fcr;
      39             :         unsigned int    flags;
      40             : };
      41             : 
      42             : #define UART_CAP_FIFO   (1 << 8)  /* UART has FIFO */
      43             : #define UART_CAP_EFR    (1 << 9)  /* UART has EFR */
      44             : #define UART_CAP_SLEEP  (1 << 10) /* UART has IER sleep */
      45             : #define UART_CAP_AFE    (1 << 11) /* MCR-based hw flow control */
      46             : #define UART_CAP_UUE    (1 << 12) /* UART needs IER bit 6 set (Xscale) */
      47             : 
      48             : #define UART_BUG_QUOT   (1 << 0)  /* UART has buggy quot LSB */
      49             : #define UART_BUG_TXEN   (1 << 1)  /* UART has buggy TX IIR status */
      50             : #define UART_BUG_NOMSR  (1 << 2)  /* UART has buggy MSR status bits (Au1x00) */
      51             : #define UART_BUG_THRE   (1 << 3)  /* UART has buggy THRE reassertion */
      52             : 
      53             : #define PROBE_RSA       (1 << 0)
      54             : #define PROBE_ANY       (~0)
      55             : 
      56             : #define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
      57             : 
      58             : #ifdef CONFIG_SERIAL_8250_SHARE_IRQ
      59             : #define SERIAL8250_SHARE_IRQS 1
      60             : #else
      61             : #define SERIAL8250_SHARE_IRQS 0
      62             : #endif
      63             : 
      64             : #if defined(__alpha__) && !defined(CONFIG_PCI)
      65             : /*
      66             :  * Digital did something really horribly wrong with the OUT1 and OUT2
      67             :  * lines on at least some ALPHA's.  The failure mode is that if either
      68             :  * is cleared, the machine locks up with endless interrupts.
      69             :  */
      70             : #define ALPHA_KLUDGE_MCR  (UART_MCR_OUT2 | UART_MCR_OUT1)
      71             : #elif defined(CONFIG_SBC8560)
      72             : /*
      73             :  * WindRiver did something similarly broken on their SBC8560 board. The
      74             :  * UART tristates its IRQ output while OUT2 is clear, but they pulled
      75             :  * the interrupt line _up_ instead of down, so if we register the IRQ
      76             :  * while the UART is in that state, we die in an IRQ storm. */
      77             : #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
      78             : #else
      79             : #define ALPHA_KLUDGE_MCR 0
      80             : #endif

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