block/export: Add query-block-exports
[qemu.git] / include / hw / timer / mss-timer.h
1 /*
2 * Microsemi SmartFusion2 Timer.
3 *
4 * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #ifndef HW_MSS_TIMER_H
26 #define HW_MSS_TIMER_H
27
28 #include "hw/sysbus.h"
29 #include "hw/ptimer.h"
30 #include "qom/object.h"
31
32 #define TYPE_MSS_TIMER "mss-timer"
33 OBJECT_DECLARE_SIMPLE_TYPE(MSSTimerState, MSS_TIMER)
34
35 /*
36 * There are two 32-bit down counting timers.
37 * Timers 1 and 2 can be concatenated into a single 64-bit Timer
38 * that operates either in Periodic mode or in One-shot mode.
39 * Writing 1 to the TIM64_MODE register bit 0 sets the Timers in 64-bit mode.
40 * In 64-bit mode, writing to the 32-bit registers has no effect.
41 * Similarly, in 32-bit mode, writing to the 64-bit mode registers
42 * has no effect. Only two 32-bit timers are supported currently.
43 */
44 #define NUM_TIMERS 2
45
46 #define R_TIM1_MAX 6
47
48 struct Msf2Timer {
49 ptimer_state *ptimer;
50
51 uint32_t regs[R_TIM1_MAX];
52 qemu_irq irq;
53 };
54
55 struct MSSTimerState {
56 SysBusDevice parent_obj;
57
58 MemoryRegion mmio;
59 uint32_t freq_hz;
60 struct Msf2Timer timers[NUM_TIMERS];
61 };
62
63 #endif /* HW_MSS_TIMER_H */