jcs.org
fork of PCE focusing on macplus, supporting DaynaPort SCSI network emulation
1/*****************************************************************************
2 * pce *
3 *****************************************************************************/
4
5/*****************************************************************************
6 * File name: src/arch/simarm/timer.h *
7 * Created: 2004-11-14 by Hampa Hug <hampa@hampa.ch> *
8 * Copyright: (C) 2004-2013 Hampa Hug <hampa@hampa.ch> *
9 * Copyright: (C) 2004-2006 Lukas Ruf <ruf@lpr.ch> *
10 *****************************************************************************/
11
12/*****************************************************************************
13 * This program is free software. You can redistribute it and / or modify it *
14 * under the terms of the GNU General Public License version 2 as published *
15 * by the Free Software Foundation. *
16 * *
17 * This program is distributed in the hope that it will be useful, but *
18 * WITHOUT ANY WARRANTY, without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General *
20 * Public License for more details. *
21 *****************************************************************************/
22
23/*****************************************************************************
24 * This software was developed at the Computer Engineering and Networks *
25 * Laboratory (TIK), Swiss Federal Institute of Technology (ETH) Zurich. *
26 *****************************************************************************/
27
28
29#ifndef PCE_SIMARM_TIMER_H
30#define PCE_SIMARM_TIMER_H 1
31
32
33#include <devices/memory.h>
34
35
36typedef struct ixp_timer_counter_s {
37 unsigned long ctrl;
38 unsigned long load;
39 unsigned long status;
40 unsigned long clear;
41
42 /* clock divisor, remaining clocks */
43 unsigned long clkdiv;
44
45 /* set to the clocking function if the counter is active */
46 void (*clock) (struct ixp_timer_counter_s *cntr, unsigned long n);
47
48 void (*irq) (void *ext, unsigned char val);
49 void *irq_ext;
50 unsigned char irq_val;
51} ixp_timer_counter_t;
52
53
54/*!***************************************************************************
55 * @short The IXP timer context
56 *****************************************************************************/
57typedef struct ixp_timer_s {
58 mem_blk_t io;
59
60 unsigned long base;
61
62 ixp_timer_counter_t cntr[4];
63
64 unsigned long twde;
65} ixp_timer_t;
66
67
68void tmr_init (ixp_timer_t *tmr, unsigned long base);
69ixp_timer_t *tmr_new (unsigned long base);
70void tmr_free (ixp_timer_t *tmr);
71void tmr_del (ixp_timer_t *tmr);
72
73mem_blk_t *tmr_get_io (ixp_timer_t *tmr, unsigned i);
74
75int tmr_get_active (ixp_timer_t *tmr, unsigned i);
76
77void tmr_set_irq_f (ixp_timer_t *tmr, unsigned i, void *f, void *ext);
78
79void tmr_clock (ixp_timer_t *tmr, unsigned long n);
80
81
82#endif