d157be852f
The support for CONFIG_MCA is being removed, since the 20 year old hardware simply isn't capable of meeting today's software demands on CPU and memory resources. This commit removes the MCA specific 8250 UART code. Cc: Alan Cox <alan@linux.intel.com> Cc: linux-serial@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
226 lines
7 KiB
C
226 lines
7 KiB
C
/*
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* include/linux/serial.h
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*
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* Copyright (C) 1992 by Theodore Ts'o.
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*
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* Redistribution of this file is permitted under the terms of the GNU
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* Public License (GPL)
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*/
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#ifndef _LINUX_SERIAL_H
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#define _LINUX_SERIAL_H
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#include <linux/types.h>
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#ifdef __KERNEL__
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#include <asm/page.h>
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/*
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* Counters of the input lines (CTS, DSR, RI, CD) interrupts
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*/
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struct async_icount {
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__u32 cts, dsr, rng, dcd, tx, rx;
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__u32 frame, parity, overrun, brk;
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__u32 buf_overrun;
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};
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/*
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* The size of the serial xmit buffer is 1 page, or 4096 bytes
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*/
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#define SERIAL_XMIT_SIZE PAGE_SIZE
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#endif
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struct serial_struct {
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int type;
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int line;
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unsigned int port;
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int irq;
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int flags;
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int xmit_fifo_size;
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int custom_divisor;
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int baud_base;
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unsigned short close_delay;
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char io_type;
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char reserved_char[1];
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int hub6;
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unsigned short closing_wait; /* time to wait before closing */
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unsigned short closing_wait2; /* no longer used... */
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unsigned char *iomem_base;
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unsigned short iomem_reg_shift;
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unsigned int port_high;
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unsigned long iomap_base; /* cookie passed into ioremap */
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};
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/*
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* For the close wait times, 0 means wait forever for serial port to
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* flush its output. 65535 means don't wait at all.
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*/
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#define ASYNC_CLOSING_WAIT_INF 0
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#define ASYNC_CLOSING_WAIT_NONE 65535
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/*
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* These are the supported serial types.
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*/
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#define PORT_UNKNOWN 0
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#define PORT_8250 1
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#define PORT_16450 2
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#define PORT_16550 3
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#define PORT_16550A 4
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#define PORT_CIRRUS 5 /* usurped by cyclades.c */
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#define PORT_16650 6
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#define PORT_16650V2 7
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#define PORT_16750 8
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#define PORT_STARTECH 9 /* usurped by cyclades.c */
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#define PORT_16C950 10 /* Oxford Semiconductor */
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#define PORT_16654 11
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#define PORT_16850 12
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#define PORT_RSA 13 /* RSA-DV II/S card */
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#define PORT_MAX 13
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#define SERIAL_IO_PORT 0
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#define SERIAL_IO_HUB6 1
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#define SERIAL_IO_MEM 2
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struct serial_uart_config {
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char *name;
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int dfl_xmit_fifo_size;
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int flags;
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};
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#define UART_CLEAR_FIFO 0x01
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#define UART_USE_FIFO 0x02
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#define UART_STARTECH 0x04
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#define UART_NATSEMI 0x08
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/*
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* Definitions for async_struct (and serial_struct) flags field
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*
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* Define ASYNCB_* for convenient use with {test,set,clear}_bit.
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*/
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#define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes
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* on the callout port */
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#define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */
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#define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */
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#define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */
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#define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */
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#define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */
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#define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */
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#define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during
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* autoconfiguration */
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#define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */
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#define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */
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#define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */
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#define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */
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#define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */
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#define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */
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#define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety
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* checks. Note: can be dangerous! */
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#define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */
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#define ASYNCB_LAST_USER 15
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/* Internal flags used only by kernel */
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#define ASYNCB_INITIALIZED 31 /* Serial port was initialized */
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#define ASYNCB_SUSPENDED 30 /* Serial port is suspended */
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#define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */
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#define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */
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#define ASYNCB_CLOSING 27 /* Serial port is closing */
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#define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */
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#define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */
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#define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */
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#define ASYNCB_CONS_FLOW 23 /* flow control for console */
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#define ASYNCB_FIRST_KERNEL 22
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#define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY)
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#define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED)
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#define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT)
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#define ASYNC_SAK (1U << ASYNCB_SAK)
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#define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS)
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#define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI)
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#define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI)
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#define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST)
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#define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ)
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#define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT)
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#define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT)
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#define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP)
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#define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD)
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#define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI)
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#define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY)
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#define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART)
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#define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE)
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#define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1)
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#define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
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ASYNC_LOW_LATENCY)
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#define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI)
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#define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI)
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#define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
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#define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED)
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#define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE)
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#define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF)
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#define ASYNC_CLOSING (1U << ASYNCB_CLOSING)
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#define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW)
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#define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD)
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#define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ)
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#define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW)
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#define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1))
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/*
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* Multiport serial configuration structure --- external structure
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*/
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struct serial_multiport_struct {
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int irq;
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int port1;
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unsigned char mask1, match1;
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int port2;
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unsigned char mask2, match2;
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int port3;
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unsigned char mask3, match3;
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int port4;
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unsigned char mask4, match4;
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int port_monitor;
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int reserved[32];
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};
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/*
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* Serial input interrupt line counters -- external structure
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* Four lines can interrupt: CTS, DSR, RI, DCD
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*/
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struct serial_icounter_struct {
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int cts, dsr, rng, dcd;
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int rx, tx;
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int frame, overrun, parity, brk;
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int buf_overrun;
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int reserved[9];
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};
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/*
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* Serial interface for controlling RS485 settings on chips with suitable
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* support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your
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* platform. The set function returns the new state, with any unsupported bits
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* reverted appropriately.
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*/
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struct serial_rs485 {
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__u32 flags; /* RS485 feature flags */
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#define SER_RS485_ENABLED (1 << 0) /* If enabled */
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#define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for
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RTS pin when
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sending */
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#define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for
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RTS pin after sent*/
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#define SER_RS485_RX_DURING_TX (1 << 4)
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__u32 delay_rts_before_send; /* Delay before send (milliseconds) */
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__u32 delay_rts_after_send; /* Delay after send (milliseconds) */
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__u32 padding[5]; /* Memory is cheap, new structs
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are a royal PITA .. */
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};
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#ifdef __KERNEL__
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#include <linux/compiler.h>
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SERIAL_H */
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