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96401bad SS |
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" | |
db1015e9 | 30 | #include "qom/object.h" |
96401bad SS |
31 | |
32 | #define TYPE_MSS_TIMER "mss-timer" | |
8063396b | 33 | OBJECT_DECLARE_SIMPLE_TYPE(MSSTimerState, MSS_TIMER) |
96401bad SS |
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 { | |
96401bad SS |
49 | ptimer_state *ptimer; |
50 | ||
51 | uint32_t regs[R_TIM1_MAX]; | |
52 | qemu_irq irq; | |
53 | }; | |
54 | ||
db1015e9 | 55 | struct MSSTimerState { |
96401bad SS |
56 | SysBusDevice parent_obj; |
57 | ||
58 | MemoryRegion mmio; | |
59 | uint32_t freq_hz; | |
60 | struct Msf2Timer timers[NUM_TIMERS]; | |
db1015e9 | 61 | }; |
96401bad SS |
62 | |
63 | #endif /* HW_MSS_TIMER_H */ |