ia64/linux-2.6.18-xen.hg

view drivers/char/riscom8.h @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
1 /*
2 * linux/drivers/char/riscom8.h -- RISCom/8 multiport serial driver.
3 *
4 * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
5 *
6 * This code is loosely based on the Linux serial driver, written by
7 * Linus Torvalds, Theodore T'so and others. The RISCom/8 card
8 * programming info was obtained from various drivers for other OSes
9 * (FreeBSD, ISC, etc), but no source code from those drivers were
10 * directly included in this driver.
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
28 #ifndef __LINUX_RISCOM8_H
29 #define __LINUX_RISCOM8_H
31 #include <linux/serial.h>
33 #ifdef __KERNEL__
35 #define RC_NBOARD 4
36 /* NOTE: RISCom decoder recognizes 16 addresses... */
37 #define RC_NPORT 8
38 #define RC_BOARD(line) (((line) >> 3) & 0x07)
39 #define RC_PORT(line) ((line) & (RC_NPORT - 1))
41 /* Ticks per sec. Used for setting receiver timeout and break length */
42 #define RISCOM_TPS 4000
44 /* Yeah, after heavy testing I decided it must be 6.
45 * Sure, You can change it if needed.
46 */
47 #define RISCOM_RXFIFO 6 /* Max. receiver FIFO size (1-8) */
49 #define RISCOM8_MAGIC 0x0907
51 #define RC_IOBASE1 0x220
52 #define RC_IOBASE2 0x240
53 #define RC_IOBASE3 0x250
54 #define RC_IOBASE4 0x260
56 struct riscom_board {
57 unsigned long flags;
58 unsigned short base;
59 unsigned char irq;
60 signed char count;
61 unsigned char DTR;
62 };
64 #define RC_BOARD_PRESENT 0x00000001
65 #define RC_BOARD_ACTIVE 0x00000002
67 struct riscom_port {
68 int magic;
69 int baud_base;
70 int flags;
71 struct tty_struct * tty;
72 int count;
73 int blocked_open;
74 long event; /* long req'd for set_bit --RR */
75 int timeout;
76 int close_delay;
77 unsigned char * xmit_buf;
78 int custom_divisor;
79 int xmit_head;
80 int xmit_tail;
81 int xmit_cnt;
82 wait_queue_head_t open_wait;
83 wait_queue_head_t close_wait;
84 struct work_struct tqueue;
85 struct work_struct tqueue_hangup;
86 short wakeup_chars;
87 short break_length;
88 unsigned short closing_wait;
89 unsigned char mark_mask;
90 unsigned char IER;
91 unsigned char MSVR;
92 unsigned char COR2;
93 #ifdef RC_REPORT_OVERRUN
94 unsigned long overrun;
95 #endif
96 #ifdef RC_REPORT_FIFO
97 unsigned long hits[10];
98 #endif
99 };
101 #endif /* __KERNEL__ */
102 #endif /* __LINUX_RISCOM8_H */