RTEMS 5.2
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grascs.h
1/*
2 * Header file for GRASCS RTEMS driver
3 *
4 * COPYRIGHT (c) 2008.
5 * Cobham Gaisler AB.
6 *
7 * The license and distribution terms for this file may be
8 * found in the file LICENSE in this distribution or at
9 * http://www.rtems.org/license/LICENSE.
10 */
11
12#ifndef __GRASCS_H__
13#define __GRASCS_H__
14
15#ifdef __cplusplus
16extern "C" {
17#endif
18
19/* Minimum and maximum system frequency */
20#define GRASCS_MIN_SFREQ 10000
21#define GRASCS_MAX_SFREQ 255000
22
23/* Default, minimum and maximum ETR pulse frequency */
24#define GRASCS_DEFAULT_ETRFREQ 10
25#define GRASCS_MIN_ETRFREQ 1
26#define GRASCS_MAX_ETRFREQ 100
27
28/* Maximum number of external time markers */
29#define GRASCS_MAX_TMS 6
30
31/* Error codes */
32#define GRASCS_ERROR_STARTSTOP 1 /* Serial/synch interface is running/stopped */
33#define GRASCS_ERROR_TRANSACTIVE 2 /* Busy with transaction */
34#define GRASCS_ERROR_CAPFAULT 3 /* Core capabilities prohibit request */
35
36/* Command register */
37#define GRASCS_CMD_RESET (1 << 0)
38#define GRASCS_CMD_STARTSTOP (1 << 1)
39#define GRASCS_CMD_ESTARTSTOP (1 << 2)
40#define GRASCS_CMD_SENDTM (1 << 3)
41#define GRASCS_CMD_ETRCTRL (7 << 4)
42#define GRASCS_CMD_ETRCTRL_BITS 4
43#define GRASCS_CMD_SLAVESEL (15 << 8)
44#define GRASCS_CMD_SLAVESEL_BITS 8
45#define GRASCS_CMD_TCDONE (1 << 12)
46#define GRASCS_CMD_TMDONE (1 << 13)
47#define GRASCS_CMD_US1 (255 << 16)
48#define GRASCS_CMD_US1_BITS 16
49#define GRASCS_CMD_US1C (1 << 24)
50
51/* Clock scale register */
52#define GRASCS_CLK_ETRFREQ_BITS 12
53
54/* Status register */
55#define GRASCS_STS_RUNNING (1 << 0)
56#define GRASCS_STS_ERUNNING (1 << 1)
57#define GRASCS_STS_TCDONE (1 << 4)
58#define GRASCS_STS_TMDONE (1 << 5)
59#define GRASCS_STS_DBITS_BITS 8
60#define GRASCS_STS_NSLAVES_BITS 13
61#define GRASCS_STS_USCONF_BITS 18
62#define GRASCS_STS_TMCONF_BITS 19
63
64extern int ASCS_init(void);
65
66extern int ASCS_input_select(int slave);
67
68extern int ASCS_etr_select(int etr, int freq);
69
70extern void ASCS_start(void);
71
72extern void ASCS_stop(void);
73
74extern int ASCS_iface_status(void);
75
76extern int ASCS_TC_send(int *word);
77
78extern int ASCS_TC_send_block(int *block, int ntrans);
79
80extern void ASCS_TC_sync_start(void);
81
82extern void ASCS_TC_sync_stop(void);
83
84extern int ASCS_TM_recv(int *word);
85
86extern int ASCS_TM_recv_block(int *block, int ntrans);
87
88#ifdef __cplusplus
89}
90#endif
91
92#endif
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