Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/drivers/serial/8250.h
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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
File MIME type: text/plain
File size: 2507 byte(s)
Tag kernel26-2.6.12-alx-r9
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 | * $Id: 8250.h,v 1.8 2002/07/21 21:32:30 rmk Exp $ |
16 | */ |
17 | |
18 | #include <linux/config.h> |
19 | |
20 | int serial8250_register_port(struct uart_port *); |
21 | void serial8250_unregister_port(int line); |
22 | void serial8250_suspend_port(int line); |
23 | void serial8250_resume_port(int line); |
24 | |
25 | struct old_serial_port { |
26 | unsigned int uart; |
27 | unsigned int baud_base; |
28 | unsigned int port; |
29 | unsigned int irq; |
30 | unsigned int flags; |
31 | unsigned char hub6; |
32 | unsigned char io_type; |
33 | unsigned char *iomem_base; |
34 | unsigned short iomem_reg_shift; |
35 | }; |
36 | |
37 | /* |
38 | * This replaces serial_uart_config in include/linux/serial.h |
39 | */ |
40 | struct serial8250_config { |
41 | const char *name; |
42 | unsigned short fifo_size; |
43 | unsigned short tx_loadsz; |
44 | unsigned char fcr; |
45 | unsigned int flags; |
46 | }; |
47 | |
48 | #define UART_CAP_FIFO (1 << 8) /* UART has FIFO */ |
49 | #define UART_CAP_EFR (1 << 9) /* UART has EFR */ |
50 | #define UART_CAP_SLEEP (1 << 10) /* UART has IER sleep */ |
51 | #define UART_CAP_AFE (1 << 11) /* MCR-based hw flow control */ |
52 | #define UART_CAP_UUE (1 << 12) /* UART needs IER bit 6 set (Xscale) */ |
53 | |
54 | #if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486)) |
55 | #define _INLINE_ inline |
56 | #else |
57 | #define _INLINE_ |
58 | #endif |
59 | |
60 | #define PROBE_RSA (1 << 0) |
61 | #define PROBE_ANY (~0) |
62 | |
63 | #define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8) |
64 | |
65 | #ifdef CONFIG_SERIAL_8250_SHARE_IRQ |
66 | #define SERIAL8250_SHARE_IRQS 1 |
67 | #else |
68 | #define SERIAL8250_SHARE_IRQS 0 |
69 | #endif |
70 | |
71 | #if defined(__alpha__) && !defined(CONFIG_PCI) |
72 | /* |
73 | * Digital did something really horribly wrong with the OUT1 and OUT2 |
74 | * lines on at least some ALPHA's. The failure mode is that if either |
75 | * is cleared, the machine locks up with endless interrupts. |
76 | */ |
77 | #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1) |
78 | #elif defined(CONFIG_SBC8560) |
79 | /* |
80 | * WindRiver did something similarly broken on their SBC8560 board. The |
81 | * UART tristates its IRQ output while OUT2 is clear, but they pulled |
82 | * the interrupt line _up_ instead of down, so if we register the IRQ |
83 | * while the UART is in that state, we die in an IRQ storm. */ |
84 | #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2) |
85 | #else |
86 | #define ALPHA_KLUDGE_MCR 0 |
87 | #endif |