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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/serial/8250.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/serial/8250.h')
-rw-r--r--drivers/serial/8250.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
new file mode 100644
index 000000000000..4f3d62f222f4
--- /dev/null
+++ b/drivers/serial/8250.h
@@ -0,0 +1,87 @@
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
20int serial8250_register_port(struct uart_port *);
21void serial8250_unregister_port(int line);
22void serial8250_suspend_port(int line);
23void serial8250_resume_port(int line);
24
25struct 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 */
40struct 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