2 * Private header file for the (dumb) serial driver
4 * Copyright (C) 1997 by Theodore Ts'o.
6 * Redistribution of this file is permitted under the terms of the GNU
10 #ifndef _LINUX_SERIALP_H
11 #define _LINUX_SERIALP_H
14 * This is our internal structure for each serial port's state.
16 * Many fields are paralleled by the structure used by the serial_struct
19 * For definitions of the flags field, see tty.h
22 #include <linux/config.h>
23 #include <linux/termios.h>
24 #include <linux/tqueue.h>
25 #include <linux/circ_buf.h>
26 #include <linux/wait.h>
27 #if (LINUX_VERSION_CODE < 0x020300)
28 /* Unfortunate, but Linux 2.2 needs async_icount defined here and
29 * it got moved in 2.3 */
30 #include <linux/serial.h>
42 int revision
; /* Chip revision (950) */
48 unsigned short close_delay
;
49 unsigned short closing_wait
; /* time to wait before closing */
50 struct async_icount icount
;
51 struct termios normal_termios
;
52 struct termios callout_termios
;
54 struct async_struct
*info
;
63 struct serial_state
*state
;
64 struct tty_struct
*tty
;
66 int ignore_status_mask
;
69 int x_char
; /* xon/xoff character */
71 unsigned short closing_wait
;
72 unsigned short closing_wait2
;
73 int IER
; /* Interrupt Enable Register */
74 int MCR
; /* Modem control register */
75 int LCR
; /* Line control register */
76 int ACR
; /* 16950 Additional Control Reg. */
78 unsigned long last_active
;
80 int blocked_open
; /* # of blocked opens */
81 long session
; /* Session of opening process */
82 long pgrp
; /* pgrp of opening process */
88 struct tq_struct tqueue
;
89 #ifdef DECLARE_WAITQUEUE
90 wait_queue_head_t open_wait
;
91 wait_queue_head_t close_wait
;
92 wait_queue_head_t delta_msr_wait
;
94 struct wait_queue
*open_wait
;
95 struct wait_queue
*close_wait
;
96 struct wait_queue
*delta_msr_wait
;
98 struct async_struct
*next_port
; /* For the linked list */
99 struct async_struct
*prev_port
;
102 #define CONFIGURED_SERIAL_PORT(info) ((info)->port || ((info)->iomem_base))
104 #define SERIAL_MAGIC 0x5301
105 #define SSTATE_MAGIC 0x5302
108 * Events are used to schedule things to happen at timer-interrupt
109 * time, instead of at rs interrupt time.
111 #define RS_EVENT_WRITE_WAKEUP 0
114 * Multiport serial configuration structure --- internal structure
116 struct rs_multiport_struct
{
118 unsigned char mask1
, match1
;
120 unsigned char mask2
, match2
;
122 unsigned char mask3
, match3
;
124 unsigned char mask4
, match4
;
128 #if defined(__alpha__) && !defined(CONFIG_PCI)
130 * Digital did something really horribly wrong with the OUT1 and OUT2
131 * lines on at least some ALPHA's. The failure mode is that if either
132 * is cleared, the machine locks up with endless interrupts.
134 #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1)
136 #define ALPHA_KLUDGE_MCR 0
140 * Structures and definitions for PCI support
144 unsigned short vendor
;
145 unsigned short device
;
146 unsigned short subvendor
;
147 unsigned short subdevice
;
153 int (*init_fn
)(struct pci_dev
*dev
, struct pci_board
*board
,
155 int first_uart_offset
;
158 struct pci_board_inst
{
159 struct pci_board board
;
164 #define PCI_ANY_ID (~0)
167 #define SPCI_FL_BASE_MASK 0x0007
168 #define SPCI_FL_BASE0 0x0000
169 #define SPCI_FL_BASE1 0x0001
170 #define SPCI_FL_BASE2 0x0002
171 #define SPCI_FL_BASE3 0x0003
172 #define SPCI_FL_BASE4 0x0004
173 #define SPCI_FL_GET_BASE(x) (x & SPCI_FL_BASE_MASK)
175 #define SPCI_FL_IRQ_MASK (0x0007 << 4)
176 #define SPCI_FL_IRQBASE0 (0x0000 << 4)
177 #define SPCI_FL_IRQBASE1 (0x0001 << 4)
178 #define SPCI_FL_IRQBASE2 (0x0002 << 4)
179 #define SPCI_FL_IRQBASE3 (0x0003 << 4)
180 #define SPCI_FL_IRQBASE4 (0x0004 << 4)
181 #define SPCI_FL_GET_IRQBASE(x) ((x & SPCI_FL_IRQ_MASK) >> 4)
183 /* Use sucessiveentries base resource table */
184 #define SPCI_FL_BASE_TABLE 0x0100
186 /* Use successive entries in the irq resource table */
187 #define SPCI_FL_IRQ_TABLE 0x0200
189 /* Use the irq resource table instead of dev->irq */
190 #define SPCI_FL_IRQRESOURCE 0x0400
192 /* Use the Base address register size to cap number of ports */
193 #define SPCI_FL_REGION_SZ_CAP 0x0800
195 /* Do not use irq sharing for this device */
196 #define SPCI_FL_NO_SHIRQ 0x1000
198 /* This is a PNP device */
199 #define SPCI_FL_ISPNP 0x2000
201 #define SPCI_FL_PNPDEFAULT (SPCI_FL_IRQRESOURCE|SPCI_FL_ISPNP)
203 #endif /* _LINUX_SERIAL_H */