serialP.h
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上传日期:2013-04-10
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- /*
- * Private header file for the (dumb) serial driver
- *
- * Copyright (C) 1997 by Theodore Ts'o.
- *
- * Redistribution of this file is permitted under the terms of the GNU
- * Public License (GPL)
- */
- #ifndef _LINUX_SERIALP_H
- #define _LINUX_SERIALP_H
- /*
- * This is our internal structure for each serial port's state.
- *
- * Many fields are paralleled by the structure used by the serial_struct
- * structure.
- *
- * For definitions of the flags field, see tty.h
- */
- #include <linux/config.h>
- #include <linux/termios.h>
- #include <linux/tqueue.h>
- #include <linux/circ_buf.h>
- #include <linux/wait.h>
- #if (LINUX_VERSION_CODE < 0x020300)
- /* Unfortunate, but Linux 2.2 needs async_icount defined here and
- * it got moved in 2.3 */
- #include <linux/serial.h>
- #endif
- struct serial_state {
- int magic;
- int baud_base;
- unsigned long port;
- int irq;
- int flags;
- int hub6;
- int type;
- int line;
- int revision; /* Chip revision (950) */
- int xmit_fifo_size;
- int custom_divisor;
- int count;
- u8 *iomem_base;
- u16 iomem_reg_shift;
- unsigned short close_delay;
- unsigned short closing_wait; /* time to wait before closing */
- struct async_icount icount;
- struct termios normal_termios;
- struct termios callout_termios;
- int io_type;
- struct async_struct *info;
- struct pci_dev *dev;
- };
- struct async_struct {
- int magic;
- unsigned long port;
- int hub6;
- int flags;
- int xmit_fifo_size;
- struct serial_state *state;
- struct tty_struct *tty;
- int read_status_mask;
- int ignore_status_mask;
- int timeout;
- int quot;
- int x_char; /* xon/xoff character */
- int close_delay;
- unsigned short closing_wait;
- unsigned short closing_wait2;
- int IER; /* Interrupt Enable Register */
- int MCR; /* Modem control register */
- int LCR; /* Line control register */
- int ACR; /* 16950 Additional Control Reg. */
- unsigned long event;
- unsigned long last_active;
- int line;
- int blocked_open; /* # of blocked opens */
- long session; /* Session of opening process */
- long pgrp; /* pgrp of opening process */
- struct circ_buf xmit;
- spinlock_t xmit_lock;
- u8 *iomem_base;
- u16 iomem_reg_shift;
- int io_type;
- struct tq_struct tqueue;
- #ifdef DECLARE_WAITQUEUE
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
- wait_queue_head_t delta_msr_wait;
- #else
- struct wait_queue *open_wait;
- struct wait_queue *close_wait;
- struct wait_queue *delta_msr_wait;
- #endif
- struct async_struct *next_port; /* For the linked list */
- struct async_struct *prev_port;
- };
- #define CONFIGURED_SERIAL_PORT(info) ((info)->port || ((info)->iomem_base))
- #define SERIAL_MAGIC 0x5301
- #define SSTATE_MAGIC 0x5302
- /*
- * Events are used to schedule things to happen at timer-interrupt
- * time, instead of at rs interrupt time.
- */
- #define RS_EVENT_WRITE_WAKEUP 0
- /*
- * Multiport serial configuration structure --- internal structure
- */
- struct rs_multiport_struct {
- int port1;
- unsigned char mask1, match1;
- int port2;
- unsigned char mask2, match2;
- int port3;
- unsigned char mask3, match3;
- int port4;
- unsigned char mask4, match4;
- int port_monitor;
- };
- #if defined(__alpha__) && !defined(CONFIG_PCI)
- /*
- * Digital did something really horribly wrong with the OUT1 and OUT2
- * lines on at least some ALPHA's. The failure mode is that if either
- * is cleared, the machine locks up with endless interrupts.
- */
- #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1)
- #else
- #define ALPHA_KLUDGE_MCR 0
- #endif
- /*
- * Structures and definitions for PCI support
- */
- struct pci_dev;
- struct pci_board {
- int flags;
- int num_ports;
- int base_baud;
- int uart_offset;
- int reg_shift;
- int (*init_fn)(struct pci_dev *dev, struct pci_board *board,
- int enable);
- int first_uart_offset;
- };
- struct pci_board_inst {
- struct pci_board board;
- struct pci_dev *dev;
- };
- extern int pci_siig10x_fn(struct pci_dev *dev, struct pci_board *board, int enable);
- extern int pci_siig20x_fn(struct pci_dev *dev, struct pci_board *board, int enable);
- #ifndef PCI_ANY_ID
- #define PCI_ANY_ID (~0)
- #endif
- #define SPCI_FL_BASE_MASK 0x0007
- #define SPCI_FL_BASE0 0x0000
- #define SPCI_FL_BASE1 0x0001
- #define SPCI_FL_BASE2 0x0002
- #define SPCI_FL_BASE3 0x0003
- #define SPCI_FL_BASE4 0x0004
- #define SPCI_FL_GET_BASE(x) (x & SPCI_FL_BASE_MASK)
- #define SPCI_FL_IRQ_MASK (0x0007 << 4)
- #define SPCI_FL_IRQBASE0 (0x0000 << 4)
- #define SPCI_FL_IRQBASE1 (0x0001 << 4)
- #define SPCI_FL_IRQBASE2 (0x0002 << 4)
- #define SPCI_FL_IRQBASE3 (0x0003 << 4)
- #define SPCI_FL_IRQBASE4 (0x0004 << 4)
- #define SPCI_FL_GET_IRQBASE(x) ((x & SPCI_FL_IRQ_MASK) >> 4)
- /* Use successive BARs (PCI base address registers),
- else use offset into some specified BAR */
- #define SPCI_FL_BASE_TABLE 0x0100
- /* Use successive entries in the irq resource table */
- #define SPCI_FL_IRQ_TABLE 0x0200
- /* Use the irq resource table instead of dev->irq */
- #define SPCI_FL_IRQRESOURCE 0x0400
- /* Use the Base address register size to cap number of ports */
- #define SPCI_FL_REGION_SZ_CAP 0x0800
- /* Do not use irq sharing for this device */
- #define SPCI_FL_NO_SHIRQ 0x1000
- /* This is a PNP device */
- #define SPCI_FL_ISPNP 0x2000
- #define SPCI_FL_PNPDEFAULT (SPCI_FL_IRQRESOURCE|SPCI_FL_ISPNP)
- #endif /* _LINUX_SERIAL_H */