Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright (C) 2004, 2005 MIPS Technologies, Inc. All rights reserved.
3 *
4 */
5
6#ifndef __ASM_RTLX_H
7#define __ASM_RTLX_H_
8
9#define LX_NODE_BASE 10
10
11#define MIPSCPU_INT_BASE 16
12#define MIPS_CPU_RTLX_IRQ 0
13
14#define RTLX_VERSION 2
15#define RTLX_xID 0x12345600
16#define RTLX_ID (RTLX_xID | RTLX_VERSION)
17#define RTLX_CHANNELS 8
18
19#define RTLX_CHANNEL_STDIO 0
20#define RTLX_CHANNEL_DBG 1
21#define RTLX_CHANNEL_SYSIO 2
22
23extern int rtlx_open(int index, int can_sleep);
24extern int rtlx_release(int index);
25extern ssize_t rtlx_read(int index, void *buff, size_t count, int user);
26extern ssize_t rtlx_write(int index, void *buffer, size_t count, int user);
27extern unsigned int rtlx_read_poll(int index, int can_sleep);
28extern unsigned int rtlx_write_poll(int index);
29
30enum rtlx_state {
31 RTLX_STATE_UNUSED,
32 RTLX_STATE_INITIALISED,
33 RTLX_STATE_REMOTE_READY,
34 RTLX_STATE_OPENED
35};
36
37#define RTLX_BUFFER_SIZE 1024
38
39/* each channel supports read and write.
40 linux (vpe0) reads lx_buffer and writes rt_buffer
41 SP (vpe1) reads rt_buffer and writes lx_buffer
42*/
43struct rtlx_channel {
44 enum rtlx_state rt_state;
45 enum rtlx_state lx_state;
46
47 int buffer_size;
48
49 /* read and write indexes per buffer */
50 int rt_write, rt_read;
51 char *rt_buffer;
52
53 int lx_write, lx_read;
54 char *lx_buffer;
55};
56
57struct rtlx_info {
58 unsigned long id;
59 enum rtlx_state state;
60
61 struct rtlx_channel channel[RTLX_CHANNELS];
62};
63
64#endif /* __ASM_RTLX_H_ */