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e01402b1 RB |
1 | /* |
2 | * Copyright (C) 2004, 2005 MIPS Technologies, Inc. All rights reserved. | |
3 | * | |
4 | */ | |
5 | ||
2600990e RB |
6 | #ifndef __ASM_RTLX_H |
7 | #define __ASM_RTLX_H_ | |
e01402b1 | 8 | |
97dcb82d AN |
9 | #include <irq.h> |
10 | ||
e01402b1 RB |
11 | #define LX_NODE_BASE 10 |
12 | ||
e01402b1 RB |
13 | #define MIPS_CPU_RTLX_IRQ 0 |
14 | ||
2600990e | 15 | #define RTLX_VERSION 2 |
e01402b1 RB |
16 | #define RTLX_xID 0x12345600 |
17 | #define RTLX_ID (RTLX_xID | RTLX_VERSION) | |
18 | #define RTLX_CHANNELS 8 | |
19 | ||
2600990e RB |
20 | #define RTLX_CHANNEL_STDIO 0 |
21 | #define RTLX_CHANNEL_DBG 1 | |
22 | #define RTLX_CHANNEL_SYSIO 2 | |
afc4841d | 23 | |
2600990e RB |
24 | extern int rtlx_open(int index, int can_sleep); |
25 | extern int rtlx_release(int index); | |
46230aa6 RB |
26 | extern ssize_t rtlx_read(int index, void __user *buff, size_t count); |
27 | extern ssize_t rtlx_write(int index, const void __user *buffer, size_t count); | |
2600990e RB |
28 | extern unsigned int rtlx_read_poll(int index, int can_sleep); |
29 | extern unsigned int rtlx_write_poll(int index); | |
30 | ||
31 | enum rtlx_state { | |
32 | RTLX_STATE_UNUSED, | |
33 | RTLX_STATE_INITIALISED, | |
34 | RTLX_STATE_REMOTE_READY, | |
35 | RTLX_STATE_OPENED | |
36 | }; | |
37 | ||
38 | #define RTLX_BUFFER_SIZE 1024 | |
afc4841d | 39 | |
e01402b1 RB |
40 | /* each channel supports read and write. |
41 | linux (vpe0) reads lx_buffer and writes rt_buffer | |
42 | SP (vpe1) reads rt_buffer and writes lx_buffer | |
43 | */ | |
afc4841d | 44 | struct rtlx_channel { |
2600990e RB |
45 | enum rtlx_state rt_state; |
46 | enum rtlx_state lx_state; | |
e01402b1 RB |
47 | |
48 | int buffer_size; | |
49 | ||
50 | /* read and write indexes per buffer */ | |
51 | int rt_write, rt_read; | |
52 | char *rt_buffer; | |
53 | ||
54 | int lx_write, lx_read; | |
55 | char *lx_buffer; | |
afc4841d | 56 | }; |
e01402b1 | 57 | |
afc4841d | 58 | struct rtlx_info { |
e01402b1 | 59 | unsigned long id; |
2600990e | 60 | enum rtlx_state state; |
e01402b1 RB |
61 | |
62 | struct rtlx_channel channel[RTLX_CHANNELS]; | |
afc4841d | 63 | }; |
e01402b1 | 64 | |
2600990e | 65 | #endif /* __ASM_RTLX_H_ */ |